kbuild.c@ 2368

Last change on this file since 2368 was 2248, checked in by bird, 16 years ago
kbuild.c: dlopen/dlinfo doesn't hold what was promissed (FreeBSD), disabled the code.
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
File size: 95.1 KB

Line
1	/* $Id: kbuild.c 2248 2009-01-19 04:34:56Z bird $ */
2	/** @file
3	* kBuild specific make functionality.
4	*/
5
6	/*
7	* Copyright (c) 2006-2009 knut st. osmundsen <[email protected]>
8	*
9	* This file is part of kBuild.
10	*
11	* kBuild is free software; you can redistribute it and/or modify
12	* it under the terms of the GNU General Public License as published by
13	* the Free Software Foundation; either version 3 of the License, or
14	* (at your option) any later version.
15	*
16	* kBuild is distributed in the hope that it will be useful,
17	* but WITHOUT ANY WARRANTY; without even the implied warranty of
18	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19	* GNU General Public License for more details.
20	*
21	* You should have received a copy of the GNU General Public License
22	* along with kBuild. If not, see <http://www.gnu.org/licenses/>
23	*
24	*/
25
26	/* No GNU coding style here! */
27
28	/*******************************************************************************
29	* Header Files *
30	*******************************************************************************/
31	#include "make.h"
32	#include "filedef.h"
33	#include "variable.h"
34	#include "dep.h"
35	#include "debug.h"
36	#ifdef WINDOWS32
37	# include "pathstuff.h"
38	# include <Windows.h>
39	#endif
40	#if defined(__APPLE__)
41	# include <mach-o/dyld.h>
42	#endif
43	#if defined(__FreeBSD__)
44	# include <dlfcn.h>
45	# include <sys/link_elf.h>
46	#endif
47
48	#include "kbuild.h"
49
50	#include <assert.h>
51
52
53	/*******************************************************************************
54	* Defined Constants And Macros *
55	*******************************************************************************/
56	/** Helper for passing a string constant to kbuild_get_variable_n. */
57	#define ST(strconst) strconst, sizeof(strconst) - 1
58
59	#if 1
60	# define my_memcpy(dst, src, len) \
61	do { \
62	if (len > 8) \
63	memcpy(dst, src, len); \
64	else \
65	switch (len) \
66	{ \
67	case 8: dst[7] = src[7]; \
68	case 7: dst[6] = src[6]; \
69	case 6: dst[5] = src[5]; \
70	case 5: dst[4] = src[4]; \
71	case 4: dst[3] = src[3]; \
72	case 3: dst[2] = src[2]; \
73	case 2: dst[1] = src[1]; \
74	case 1: dst[0] = src[0]; \
75	case 0: break; \
76	} \
77	} while (0)
78	#elif defined(__GNUC__)
79	# define my_memcpy __builtin_memcpy
80	#elif defined(_MSC_VER)
81	# pragma instrinic(memcpy)
82	# define my_memcpy memcpy
83	#endif
84
85
86	/*******************************************************************************
87	* Global Variables *
88	*******************************************************************************/
89	/** The argv[0] passed to main. */
90	static const char *g_pszExeName;
91	/** The initial working directory. */
92	static char *g_pszInitialCwd;
93
94
95	/**
96	* Initialize kBuild stuff.
97	*
98	* @param argc Number of arguments to main().
99	* @param argv The main() argument vector.
100	*/
101	void init_kbuild(int argc, char **argv)
102	{
103	int rc;
104	PATH_VAR(szTmp);
105
106	/*
107	* Get the initial cwd for use in my_abspath.
108	*/
109	#ifdef WINDOWS32
110	if (getcwd_fs(szTmp, GET_PATH_MAX) != 0)
111	#else
112	if (getcwd(szTmp, GET_PATH_MAX) != 0)
113	#endif
114	g_pszInitialCwd = xstrdup(szTmp);
115	else
116	fatal(NILF, _("getcwd failed"));
117
118	/*
119	* Determin the executable name.
120	*/
121	rc = -1;
122	#if defined(__APPLE__)
123	{
124	const char *pszImageName = _dyld_get_image_name(0);
125	if (pszImageName)
126	{
127	size_t cchImageName = strlen(pszImageName);
128	if (cchImageName < GET_PATH_MAX)
129	{
130	memcpy(szTmp, pszImageName, cchImageName + 1);
131	rc = 0;
132	}
133	}
134	}
135
136	#elif defined(__FreeBSD__)
137	rc = readlink("/proc/curproc/file", szTmp, GET_PATH_MAX - 1);
138	if (rc < 0 \|\| rc == GET_PATH_MAX - 1)
139	{
140	rc = -1;
141	# if 0 /* doesn't work because l_name isn't always absolute, it's just argv0 from exec or something. */
142	/* /proc is optional, try rtdl. */
143	void *hExe = dlopen(NULL, 0);
144	rc = -1;
145	if (hExe)
146	{
147	struct link_map const *pLinkMap = 0;
148	if (dlinfo(hExe, RTLD_DI_LINKMAP, &pLinkMap) == 0)
149	{
150	const char *pszImageName = pLinkMap->l_name;
151	size_t cchImageName = strlen(pszImageName);
152	if (cchImageName < GET_PATH_MAX)
153	{
154	memcpy(szTmp, pszImageName, cchImageName + 1);
155	rc = 0;
156	}
157	}
158
159	}
160	# endif
161	}
162	else
163	szTmp[rc] = '\0';
164
165	#elif defined(__gnu_linux__) \|\| defined(__linux__)
166	rc = readlink("/proc/self/exe", szTmp, GET_PATH_MAX - 1);
167	if (rc < 0 \|\| rc == GET_PATH_MAX - 1)
168	rc = -1;
169	else
170	szTmp[rc] = '\0';
171
172	#elif defined(__OS2__)
173	_execname(szTmp, GET_PATH_MAX);
174	rc = 0;
175
176	#elif defined(__sun__)
177	{
178	char szTmp2[64];
179	snprintf(szTmp2, sizeof(szTmp2), "/proc/%ld/path/a.out", (long)getpid());
180	rc = readlink(szTmp2, szTmp, GET_PATH_MAX - 1);
181	if (rc < 0 \|\| rc == GET_PATH_MAX - 1)
182	rc = -1;
183	else
184	szTmp[rc] = '\0';
185	}
186
187	#elif defined(WINDOWS32)
188	if (GetModuleFileName(GetModuleHandle(NULL), szTmp, GET_PATH_MAX))
189	rc = 0;
190
191	#endif
192
193	#if !defined(__OS2__) && !defined(WINDOWS32)
194	/* fallback, try use the path to locate the binary. */
195	if ( rc < 0
196	&& access(argv[0], X_OK))
197	{
198	size_t cchArgv0 = strlen(argv[0]);
199	const char *pszPath = getenv("PATH");
200	char *pszCopy = xstrdup(pszPath ? pszPath : ".");
201	char *psz = pszCopy;
202	while (*psz)
203	{
204	size_t cch;
205	char *pszEnd = strchr(psz, PATH_SEPARATOR_CHAR);
206	if (!pszEnd)
207	pszEnd = strchr(psz, '\0');
208	cch = pszEnd - psz;
209	if (cch + cchArgv0 + 2 <= GET_PATH_MAX)
210	{
211	memcpy(szTmp, psz, cch);
212	szTmp[cch] = '/';
213	memcpy(&szTmp[cch + 1], argv[0], cchArgv0 + 1);
214	if (!access(szTmp, X_OK))
215	{
216	rc = 0;
217	break;
218	}
219	}
220
221	/* next */
222	psz = pszEnd;
223	while (*psz == PATH_SEPARATOR_CHAR)
224	psz++;
225	}
226	free(pszCopy);
227	}
228	#endif
229
230	if (rc < 0)
231	g_pszExeName = argv[0];
232	else
233	g_pszExeName = xstrdup(szTmp);
234
235	(void)argc;
236	}
237
238
239	/**
240	* Wrapper that ensures correct starting_directory.
241	*/
242	static char my_abspath(const char pszIn, char *pszOut)
243	{
244	char pszSaved, pszRet;
245
246	pszSaved = starting_directory;
247	starting_directory = g_pszInitialCwd;
248	pszRet = abspath(pszIn, pszOut);
249	starting_directory = pszSaved;
250
251	return pszRet;
252	}
253
254
255	/**
256	* Determin the KBUILD_PATH value.
257	*
258	* @returns Pointer to static a buffer containing the value (consider it read-only).
259	*/
260	const char *get_kbuild_path(void)
261	{
262	static const char *s_pszPath = NULL;
263	if (!s_pszPath)
264	{
265	PATH_VAR(szTmpPath);
266	const char *pszEnvVar = getenv("KBUILD_PATH");
267	if ( !pszEnvVar
268	\|\| !my_abspath(pszEnvVar, szTmpPath))
269	{
270	pszEnvVar = getenv("PATH_KBUILD");
271	if ( !pszEnvVar
272	\|\| !my_abspath(pszEnvVar, szTmpPath))
273	{
274	#ifdef KBUILD_PATH
275	return s_pszPath = KBUILD_PATH;
276	#else
277	/* $(abspath $(KBUILD_BIN_PATH)/../..)*/
278	size_t cch = strlen(get_kbuild_bin_path());
279	char *pszTmp2 = alloca(cch + sizeof("/../.."));
280	strcat(strcpy(pszTmp2, get_kbuild_bin_path()), "/../..");
281	if (!my_abspath(pszTmp2, szTmpPath))
282	fatal(NILF, _("failed to determin KBUILD_PATH"));
283	#endif
284	}
285	}
286	s_pszPath = xstrdup(szTmpPath);
287	}
288	return s_pszPath;
289	}
290
291
292	/**
293	* Determin the KBUILD_BIN_PATH value.
294	*
295	* @returns Pointer to static a buffer containing the value (consider it read-only).
296	*/
297	const char *get_kbuild_bin_path(void)
298	{
299	static const char *s_pszPath = NULL;
300	if (!s_pszPath)
301	{
302	PATH_VAR(szTmpPath);
303
304	const char *pszEnvVar = getenv("KBUILD_BIN_PATH");
305	if ( !pszEnvVar
306	\|\| !my_abspath(pszEnvVar, szTmpPath))
307	{
308	pszEnvVar = getenv("PATH_KBUILD_BIN");
309	if ( !pszEnvVar
310	\|\| !my_abspath(pszEnvVar, szTmpPath))
311	{
312	#ifdef KBUILD_PATH
313	return s_pszPath = KBUILD_BIN_PATH;
314	#else
315	/* $(abspath $(dir $(ARGV0)).) */
316	size_t cch = strlen(g_pszExeName);
317	char *pszTmp2 = alloca(cch + sizeof("."));
318	char *pszSep = pszTmp2 + cch - 1;
319	memcpy(pszTmp2, g_pszExeName, cch);
320	# ifdef HAVE_DOS_PATHS
321	while (pszSep >= pszTmp2 && pszSep != '/' && pszSep != '\\' && *pszSep != ':')
322	# else
323	while (pszSep >= pszTmp2 && *pszSep != '/')
324	# endif
325	pszSep--;
326	if (pszSep >= pszTmp2)
327	strcpy(pszSep + 1, ".");
328	else
329	strcpy(pszTmp2, ".");
330
331	if (!my_abspath(pszTmp2, szTmpPath))
332	fatal(NILF, _("failed to determin KBUILD_BIN_PATH (pszTmp2=%s szTmpPath=%s)"), pszTmp2, szTmpPath);
333	#endif /* !KBUILD_PATH */
334	}
335	}
336	s_pszPath = xstrdup(szTmpPath);
337	}
338	return s_pszPath;
339	}
340
341
342	/**
343	* Determin the location of default kBuild shell.
344	*
345	* @returns Pointer to static a buffer containing the location (consider it read-only).
346	*/
347	const char *get_default_kbuild_shell(void)
348	{
349	static char *s_pszDefaultShell = NULL;
350	if (!s_pszDefaultShell)
351	{
352	#if defined(__OS2__) \|\| defined(_WIN32) \|\| defined(WINDOWS32)
353	static const char s_szShellName[] = "/kmk_ash.exe";
354	#else
355	static const char s_szShellName[] = "/kmk_ash";
356	#endif
357	const char *pszBin = get_kbuild_bin_path();
358	size_t cchBin = strlen(pszBin);
359	s_pszDefaultShell = xmalloc(cchBin + sizeof(s_szShellName));
360	memcpy(s_pszDefaultShell, pszBin, cchBin);
361	memcpy(&s_pszDefaultShell[cchBin], s_szShellName, sizeof(s_szShellName));
362	}
363	return s_pszDefaultShell;
364	}
365
366	#ifdef KMK_HELPERS
367
368	/**
369	* Applies the specified default path to any relative paths in *ppsz.
370	*
371	* @param pDefPath The default path.
372	* @param ppsz Pointer to the string pointer. If we expand anything, *ppsz
373	* will be replaced and the caller is responsible for calling free() on it.
374	* @param pcch IN: *pcch contains the current string length.
375	* OUT: *pcch contains the new string length.
376	* @param pcchAlloc *pcchAlloc contains the length allocated for the string. Can be NULL.
377	* @param fCanFree Whether *ppsz should be freed when we replace it.
378	*/
379	static void
380	kbuild_apply_defpath(struct variable pDefPath, char ppsz, unsigned int pcch, unsigned int *pcchAlloc, int fCanFree)
381	{
382	const char *pszIterator;
383	const char *pszInCur;
384	unsigned int cchInCur;
385	unsigned int cRelativePaths;
386
387	/*
388	* The first pass, count the relative paths.
389	*/
390	cRelativePaths = 0;
391	pszIterator = *ppsz;
392	while ((pszInCur = find_next_token(&pszIterator, &cchInCur)))
393	{
394	/* is relative? */
395	#ifdef HAVE_DOS_PATHS
396	if (pszInCur[0] != '/' && pszInCur[0] != '\\' && (cchInCur < 2 \|\| pszInCur[1] != ':'))
397	#else
398	if (pszInCur[0] != '/')
399	#endif
400	cRelativePaths++;
401	}
402
403	/*
404	* The second pass construct the new string.
405	*/
406	if (cRelativePaths)
407	{
408	const size_t cchOut = pcch + cRelativePaths (pDefPath->value_length + 1) + 1;
409	char *pszOut = xmalloc(cchOut);
410	char *pszOutCur = pszOut;
411	const char pszInNextCopy = ppsz;
412
413	cRelativePaths = 0;
414	pszIterator = *ppsz;
415	while ((pszInCur = find_next_token(&pszIterator, &cchInCur)))
416	{
417	/* is relative? */
418	#ifdef HAVE_DOS_PATHS
419	if (pszInCur[0] != '/' && pszInCur[0] != '\\' && (cchInCur < 2 \|\| pszInCur[1] != ':'))
420	#else
421	if (pszInCur[0] != '/')
422	#endif
423	{
424	PATH_VAR(szAbsPathIn);
425	PATH_VAR(szAbsPathOut);
426
427	if (pDefPath->value_length + cchInCur + 1 >= GET_PATH_MAX)
428	continue;
429
430	/* Create the abspath input. */
431	memcpy(szAbsPathIn, pDefPath->value, pDefPath->value_length);
432	szAbsPathIn[pDefPath->value_length] = '/';
433	memcpy(&szAbsPathIn[pDefPath->value_length + 1], pszInCur, cchInCur);
434	szAbsPathIn[pDefPath->value_length + 1 + cchInCur] = '\0';
435
436	if (abspath(szAbsPathIn, szAbsPathOut) != NULL)
437	{
438	const size_t cchAbsPathOut = strlen(szAbsPathOut);
439	assert(cchAbsPathOut <= pDefPath->value_length + 1 + cchInCur);
440
441	/* copy leading input */
442	if (pszInCur != pszInNextCopy)
443	{
444	const size_t cchCopy = pszInCur - pszInNextCopy;
445	memcpy(pszOutCur, pszInNextCopy, cchCopy);
446	pszOutCur += cchCopy;
447	}
448	pszInNextCopy = pszInCur + cchInCur;
449
450	/* copy out the abspath. */
451	memcpy(pszOutCur, szAbsPathOut, cchAbsPathOut);
452	pszOutCur += cchAbsPathOut;
453	}
454	}
455	}
456	/* the final copy (includes the nil). */
457	cchInCur = ppsz + pcch - pszInNextCopy;
458	memcpy(pszOutCur, pszInNextCopy, cchInCur);
459	pszOutCur += cchInCur;
460	*pszOutCur = '\0';
461	assert((size_t)(pszOutCur - pszOut) < cchOut);
462
463	/* set return values */
464	if (fCanFree)
465	free(*ppsz);
466	*ppsz = pszOut;
467	*pcch = pszOutCur - pszOut;
468	if (pcchAlloc)
469	*pcchAlloc = cchOut;
470	}
471	}
472
473	/**
474	* Gets a variable that must exist.
475	* Will cause a fatal failure if the variable doesn't exist.
476	*
477	* @returns Pointer to the variable.
478	* @param pszName The variable name.
479	* @param cchName The name length.
480	*/
481	MY_INLINE struct variable *
482	kbuild_get_variable_n(const char *pszName, size_t cchName)
483	{
484	struct variable *pVar = lookup_variable(pszName, cchName);
485	if (!pVar)
486	fatal(NILF, _("variable `%.*s' isn't defined!"), (int)cchName, pszName);
487	if (pVar->recursive)
488	fatal(NILF, _("variable `%.*s' is defined as `recursive' instead of `simple'!"), (int)cchName, pszName);
489
490	MY_ASSERT_MSG(strlen(pVar->value) == pVar->value_length,
491	("%u != %u %.*s\n", pVar->value_length, (unsigned int)strlen(pVar->value), (int)cchName, pVar->name));
492	return pVar;
493	}
494
495
496	/**
497	* Gets a variable that must exist and can be recursive.
498	* Will cause a fatal failure if the variable doesn't exist.
499	*
500	* @returns Pointer to the variable.
501	* @param pszName The variable name.
502	*/
503	static struct variable *
504	kbuild_get_recursive_variable(const char *pszName)
505	{
506	struct variable *pVar = lookup_variable(pszName, strlen(pszName));
507	if (!pVar)
508	fatal(NILF, _("variable `%s' isn't defined!"), pszName);
509
510	MY_ASSERT_MSG(strlen(pVar->value) == pVar->value_length,
511	("%u != %u %s\n", pVar->value_length, (unsigned int)strlen(pVar->value), pVar->name));
512	return pVar;
513	}
514
515
516	/**
517	* Gets a variable that doesn't have to exit, but if it does can be recursive.
518	*
519	* @returns Pointer to the variable.
520	* NULL if not found.
521	* @param pszName The variable name. Doesn't need to be terminated.
522	* @param cchName The name length.
523	*/
524	static struct variable *
525	kbuild_query_recursive_variable_n(const char *pszName, size_t cchName)
526	{
527	struct variable *pVar = lookup_variable(pszName, cchName);
528	MY_ASSERT_MSG(!pVar \|\| strlen(pVar->value) == pVar->value_length,
529	("%u != %u %.*s\n", pVar->value_length, (unsigned int)strlen(pVar->value), (int)cchName, pVar->name));
530	return pVar;
531	}
532
533
534	/**
535	* Gets a variable that doesn't have to exit, but if it does can be recursive.
536	*
537	* @returns Pointer to the variable.
538	* NULL if not found.
539	* @param pszName The variable name.
540	*/
541	static struct variable *
542	kbuild_query_recursive_variable(const char *pszName)
543	{
544	return kbuild_query_recursive_variable_n(pszName, strlen(pszName));
545	}
546
547
548	/**
549	* Converts the specified variable into a 'simple' one.
550	* @returns pVar.
551	* @param pVar The variable.
552	*/
553	static struct variable *
554	kbuild_simplify_variable(struct variable *pVar)
555	{
556	if (memchr(pVar->value, '$', pVar->value_length))
557	{
558	unsigned int value_len;
559	char *pszExpanded = allocated_variable_expand_2(pVar->value, pVar->value_length, &value_len);
560	#ifdef CONFIG_WITH_RDONLY_VARIABLE_VALUE
561	if (pVar->rdonly_val)
562	pVar->rdonly_val = 0;
563	else
564	#endif
565	free(pVar->value);
566	assert(pVar->origin != o_automatic);
567	pVar->value = pszExpanded;
568	pVar->value_length = value_len;
569	pVar->value_alloc_len = value_len + 1;
570	}
571	pVar->recursive = 0;
572	return pVar;
573	}
574
575
576	/**
577	* Looks up a variable.
578	* The value_length field is valid upon successful return.
579	*
580	* @returns Pointer to the variable. NULL if not found.
581	* @param pszName The variable name.
582	* @param cchName The name length.
583	*/
584	MY_INLINE struct variable *
585	kbuild_lookup_variable_n(const char *pszName, size_t cchName)
586	{
587	struct variable *pVar = lookup_variable(pszName, cchName);
588	if (pVar)
589	{
590	MY_ASSERT_MSG(strlen(pVar->value) == pVar->value_length,
591	("%u != %u %.*s\n", pVar->value_length, (unsigned int)strlen(pVar->value), (int)cchName, pVar->name));
592
593	/* Make sure the variable is simple, convert it if necessary. */
594	if (pVar->recursive)
595	kbuild_simplify_variable(pVar);
596	}
597	return pVar;
598	}
599
600
601	/**
602	* Looks up a variable.
603	* The value_length field is valid upon successful return.
604	*
605	* @returns Pointer to the variable. NULL if not found.
606	* @param pszName The variable name.
607	*/
608	MY_INLINE struct variable *
609	kbuild_lookup_variable(const char *pszName)
610	{
611	return kbuild_lookup_variable_n(pszName, strlen(pszName));
612	}
613
614
615	/**
616	* Looks up a variable and applies default a path to all relative paths.
617	* The value_length field is valid upon successful return.
618	*
619	* @returns Pointer to the variable. NULL if not found.
620	* @param pDefPath The default path.
621	* @param pszName The variable name.
622	* @param cchName The name length.
623	*/
624	MY_INLINE struct variable *
625	kbuild_lookup_variable_defpath_n(struct variable pDefPath, const char pszName, size_t cchName)
626	{
627	struct variable *pVar = kbuild_lookup_variable_n(pszName, cchName);
628	if (pVar && pDefPath)
629	{
630	assert(pVar->origin != o_automatic);
631	#ifdef CONFIG_WITH_RDONLY_VARIABLE_VALUE
632	assert(!pVar->rdonly_val);
633	#endif
634	kbuild_apply_defpath(pDefPath, &pVar->value, &pVar->value_length, &pVar->value_alloc_len, 1);
635	}
636	return pVar;
637	}
638
639
640	/**
641	* Looks up a variable and applies default a path to all relative paths.
642	* The value_length field is valid upon successful return.
643	*
644	* @returns Pointer to the variable. NULL if not found.
645	* @param pDefPath The default path.
646	* @param pszName The variable name.
647	*/
648	MY_INLINE struct variable *
649	kbuild_lookup_variable_defpath(struct variable pDefPath, const char pszName)
650	{
651	struct variable *pVar = kbuild_lookup_variable(pszName);
652	if (pVar && pDefPath)
653	{
654	assert(pVar->origin != o_automatic);
655	#ifdef CONFIG_WITH_RDONLY_VARIABLE_VALUE
656	assert(!pVar->rdonly_val);
657	#endif
658	kbuild_apply_defpath(pDefPath, &pVar->value, &pVar->value_length, &pVar->value_alloc_len, 1);
659	}
660	return pVar;
661	}
662
663
664	/**
665	* Gets the first defined property variable.
666	*/
667	static struct variable *
668	kbuild_first_prop(struct variable pTarget, struct variable pSource,
669	struct variable pTool, struct variable pType,
670	struct variable pBldTrg, struct variable pBldTrgArch,
671	const char *pszPropF1, char cchPropF1,
672	const char *pszPropF2, char cchPropF2,
673	const char *pszVarName)
674	{
675	struct variable *pVar;
676	size_t cchBuf;
677	char *pszBuf;
678	char psz, psz1, psz2, psz3, psz4, pszEnd;
679
680	/* calc and allocate a too big name buffer. */
681	cchBuf = cchPropF2 + 1
682	+ cchPropF1 + 1
683	+ pTarget->value_length + 1
684	+ pSource->value_length + 1
685	+ (pTool ? pTool->value_length + 1 : 0)
686	+ pType->value_length + 1
687	+ pBldTrg->value_length + 1
688	+ pBldTrgArch->value_length + 1;
689	pszBuf = xmalloc(cchBuf);
690
691	#define ADD_VAR(pVar) do { my_memcpy(psz, (pVar)->value, (pVar)->value_length); psz += (pVar)->value_length; } while (0)
692	#define ADD_STR(pszStr, cchStr) do { my_memcpy(psz, (pszStr), (cchStr)); psz += (cchStr); } while (0)
693	#define ADD_CSTR(pszStr) do { my_memcpy(psz, pszStr, sizeof(pszStr) - 1); psz += sizeof(pszStr) - 1; } while (0)
694	#define ADD_CH(ch) do { *psz++ = (ch); } while (0)
695
696	/*
697	* $(target)_$(source)_$(type)$(propf2).$(bld_trg).$(bld_trg_arch)
698	*/
699	psz = pszBuf;
700	ADD_VAR(pTarget);
701	ADD_CH('_');
702	ADD_VAR(pSource);
703	ADD_CH('_');
704	psz2 = psz;
705	ADD_VAR(pType);
706	ADD_STR(pszPropF2, cchPropF2);
707	psz3 = psz;
708	ADD_CH('.');
709	ADD_VAR(pBldTrg);
710	psz4 = psz;
711	ADD_CH('.');
712	ADD_VAR(pBldTrgArch);
713	pVar = kbuild_lookup_variable_n(pszBuf, psz - pszBuf);
714
715	/* $(target)_$(source)_$(type)$(propf2).$(bld_trg) */
716	if (!pVar)
717	pVar = kbuild_lookup_variable_n(pszBuf, psz4 - pszBuf);
718
719	/* $(target)_$(source)_$(type)$(propf2) */
720	if (!pVar)
721	pVar = kbuild_lookup_variable_n(pszBuf, psz3 - pszBuf);
722
723	/*
724	* $(target)_$(source)_$(propf2).$(bld_trg).$(bld_trg_arch)
725	*/
726	if (!pVar)
727	{
728	psz = psz2;
729	ADD_STR(pszPropF2, cchPropF2);
730	psz3 = psz;
731	ADD_CH('.');
732	ADD_VAR(pBldTrg);
733	psz4 = psz;
734	ADD_CH('.');
735	ADD_VAR(pBldTrgArch);
736	pVar = kbuild_lookup_variable_n(pszBuf, psz - pszBuf);
737
738	/* $(target)_$(source)_$(propf2).$(bld_trg) */
739	if (!pVar)
740	pVar = kbuild_lookup_variable_n(pszBuf, psz4 - pszBuf);
741
742	/* $(target)_$(source)_$(propf2) */
743	if (!pVar)
744	pVar = kbuild_lookup_variable_n(pszBuf, psz3 - pszBuf);
745	}
746
747
748	/*
749	* $(source)_$(type)$(propf2).$(bld_trg).$(bld_trg_arch)
750	*/
751	if (!pVar)
752	{
753	psz = pszBuf;
754	ADD_VAR(pSource);
755	ADD_CH('_');
756	psz2 = psz;
757	ADD_VAR(pType);
758	ADD_STR(pszPropF2, cchPropF2);
759	psz3 = psz;
760	ADD_CH('.');
761	ADD_VAR(pBldTrg);
762	psz4 = psz;
763	ADD_CH('.');
764	ADD_VAR(pBldTrgArch);
765	pVar = kbuild_lookup_variable_n(pszBuf, psz - pszBuf);
766
767	/* $(source)_$(type)$(propf2).$(bld_trg) */
768	if (!pVar)
769	pVar = kbuild_lookup_variable_n(pszBuf, psz4 - pszBuf);
770
771	/* $(source)_$(type)$(propf2) */
772	if (!pVar)
773	pVar = kbuild_lookup_variable_n(pszBuf, psz3 - pszBuf);
774
775	/*
776	* $(source)_$(propf2).$(bld_trg).$(bld_trg_arch)
777	*/
778	if (!pVar)
779	{
780	psz = psz2;
781	ADD_STR(pszPropF2, cchPropF2);
782	psz3 = psz;
783	ADD_CH('.');
784	ADD_VAR(pBldTrg);
785	psz4 = psz;
786	ADD_CH('.');
787	ADD_VAR(pBldTrgArch);
788	pVar = kbuild_lookup_variable_n(pszBuf, psz - pszBuf);
789
790	/* $(source)_$(propf2).$(bld_trg) */
791	if (!pVar)
792	pVar = kbuild_lookup_variable_n(pszBuf, psz4 - pszBuf);
793
794	/* $(source)_$(propf2) */
795	if (!pVar)
796	pVar = kbuild_lookup_variable_n(pszBuf, psz3 - pszBuf);
797	}
798	}
799
800	/*
801	* $(target)_$(type)$(propf2).$(bld_trg).$(bld_trg_arch)
802	*/
803	if (!pVar)
804	{
805	psz = pszBuf;
806	ADD_VAR(pTarget);
807	ADD_CH('_');
808	psz2 = psz;
809	ADD_VAR(pType);
810	ADD_STR(pszPropF2, cchPropF2);
811	psz3 = psz;
812	ADD_CH('.');
813	ADD_VAR(pBldTrg);
814	psz4 = psz;
815	ADD_CH('.');
816	ADD_VAR(pBldTrgArch);
817	pVar = kbuild_lookup_variable_n(pszBuf, psz - pszBuf);
818
819	/* $(target)_$(type)$(propf2).$(bld_trg) */
820	if (!pVar)
821	pVar = kbuild_lookup_variable_n(pszBuf, psz4 - pszBuf);
822
823	/* $(target)_$(type)$(propf2) */
824	if (!pVar)
825	pVar = kbuild_lookup_variable_n(pszBuf, psz3 - pszBuf);
826
827	/* $(target)_$(propf2).$(bld_trg).$(bld_trg_arch) */
828	if (!pVar)
829	{
830	psz = psz2;
831	ADD_STR(pszPropF2, cchPropF2);
832	psz3 = psz;
833	ADD_CH('.');
834	ADD_VAR(pBldTrg);
835	psz4 = psz;
836	ADD_CH('.');
837	ADD_VAR(pBldTrgArch);
838	pVar = kbuild_lookup_variable_n(pszBuf, psz - pszBuf);
839	}
840
841	/* $(target)_$(propf2).$(bld_trg) */
842	if (!pVar)
843	pVar = kbuild_lookup_variable_n(pszBuf, psz4 - pszBuf);
844
845	/* $(target)_$(propf2) */
846	if (!pVar)
847	pVar = kbuild_lookup_variable_n(pszBuf, psz3 - pszBuf);
848	}
849
850	/*
851	* TOOL_$(tool)_$(type)$(propf2).$(bld_trg).$(bld_trg_arch)
852	*/
853	if (!pVar && pTool)
854	{
855	psz = pszBuf;
856	ADD_CSTR("TOOL_");
857	ADD_VAR(pTool);
858	ADD_CH('_');
859	psz2 = psz;
860	ADD_VAR(pType);
861	ADD_STR(pszPropF2, cchPropF2);
862	psz3 = psz;
863	ADD_CH('.');
864	ADD_VAR(pBldTrg);
865	psz4 = psz;
866	ADD_CH('.');
867	ADD_VAR(pBldTrgArch);
868	pVar = kbuild_lookup_variable_n(pszBuf, psz - pszBuf);
869
870	/* TOOL_$(tool)_$(type)$(propf2).$(bld_trg) */
871	if (!pVar)
872	pVar = kbuild_lookup_variable_n(pszBuf, psz4 - pszBuf);
873
874	/* TOOL_$(tool)_$(type)$(propf2) */
875	if (!pVar)
876	pVar = kbuild_lookup_variable_n(pszBuf, psz3 - pszBuf);
877
878	/* TOOL_$(tool)_$(propf2).$(bld_trg).$(bld_trg_arch) */
879	if (!pVar)
880	{
881	psz = psz2;
882	ADD_STR(pszPropF2, cchPropF2);
883	psz3 = psz;
884	ADD_CH('.');
885	ADD_VAR(pBldTrg);
886	psz4 = psz;
887	ADD_CH('.');
888	ADD_VAR(pBldTrgArch);
889	pVar = kbuild_lookup_variable_n(pszBuf, psz - pszBuf);
890
891	/* TOOL_$(tool)_$(propf2).$(bld_trg) */
892	if (!pVar)
893	pVar = kbuild_lookup_variable_n(pszBuf, psz4 - pszBuf);
894
895	/* TOOL_$(tool)_$(propf2) */
896	if (!pVar)
897	pVar = kbuild_lookup_variable_n(pszBuf, psz3 - pszBuf);
898	}
899	}
900
901	/*
902	* $(type)$(propf1).$(bld_trg).$(bld_trg_arch)
903	*/
904	if (!pVar)
905	{
906	psz = pszBuf;
907	ADD_VAR(pType);
908	ADD_STR(pszPropF1, cchPropF1);
909	psz3 = psz;
910	ADD_CH('.');
911	ADD_VAR(pBldTrg);
912	psz4 = psz;
913	ADD_CH('.');
914	ADD_VAR(pBldTrgArch);
915	pVar = kbuild_lookup_variable_n(pszBuf, psz - pszBuf);
916
917	/* $(type)$(propf1).$(bld_trg) */
918	if (!pVar)
919	pVar = kbuild_lookup_variable_n(pszBuf, psz4 - pszBuf);
920
921	/* $(type)$(propf1) */
922	if (!pVar)
923	pVar = kbuild_lookup_variable_n(pszBuf, psz3 - pszBuf);
924
925	/*
926	* $(propf1).$(bld_trg).$(bld_trg_arch)
927	*/
928	if (!pVar)
929	{
930	psz1 = pszBuf + pType->value_length;
931	pVar = kbuild_lookup_variable_n(psz1, psz - psz1);
932
933	/* $(propf1).$(bld_trg) */
934	if (!pVar)
935	pVar = kbuild_lookup_variable_n(psz1, psz4 - psz1);
936
937	/* $(propf1) */
938	if (!pVar)
939	pVar = kbuild_lookup_variable_n(pszPropF1, cchPropF1);
940	}
941	}
942	free(pszBuf);
943	#undef ADD_VAR
944	#undef ADD_STR
945	#undef ADD_CSTR
946	#undef ADD_CH
947
948	if (pVar)
949	{
950	/* strip it */
951	psz = pVar->value;
952	pszEnd = psz + pVar->value_length;
953	while (isblank((unsigned char)*psz))
954	psz++;
955	while (pszEnd > psz && isblank((unsigned char)pszEnd[-1]))
956	pszEnd--;
957	if (pszEnd > psz)
958	{
959	char chSaved = *pszEnd;
960	*pszEnd = '\0';
961	pVar = define_variable_vl(pszVarName, strlen(pszVarName), psz, pszEnd - psz,
962	1 /* duplicate /, o_local, 0 / !recursive */);
963	*pszEnd = chSaved;
964	if (pVar)
965	return pVar;
966	}
967	}
968	return NULL;
969	}
970
971
972	/*
973	_SOURCE_TOOL = $(strip $(firstword \
974	$($(target)_$(source)_$(type)TOOL.$(bld_trg).$(bld_trg_arch)) \
975	$($(target)_$(source)_$(type)TOOL.$(bld_trg)) \
976	$($(target)_$(source)_$(type)TOOL) \
977	$($(target)_$(source)_TOOL.$(bld_trg).$(bld_trg_arch)) \
978	$($(target)_$(source)_TOOL.$(bld_trg)) \
979	$($(target)_$(source)_TOOL) \
980	$($(source)_$(type)TOOL.$(bld_trg).$(bld_trg_arch)) \
981	$($(source)_$(type)TOOL.$(bld_trg)) \
982	$($(source)_$(type)TOOL) \
983	$($(source)_TOOL.$(bld_trg).$(bld_trg_arch)) \
984	$($(source)_TOOL.$(bld_trg)) \
985	$($(source)_TOOL) \
986	$($(target)_$(type)TOOL.$(bld_trg).$(bld_trg_arch)) \
987	$($(target)_$(type)TOOL.$(bld_trg)) \
988	$($(target)_$(type)TOOL) \
989	$($(target)_TOOL.$(bld_trg).$(bld_trg_arch)) \
990	$($(target)_TOOL.$(bld_trg)) \
991	$($(target)_TOOL) \
992	$($(type)TOOL.$(bld_trg).$(bld_trg_arch)) \
993	$($(type)TOOL.$(bld_trg)) \
994	$($(type)TOOL) \
995	$(TOOL.$(bld_trg).$(bld_trg_arch)) \
996	$(TOOL.$(bld_trg)) \
997	$(TOOL) ))
998	*/
999	static struct variable *
1000	kbuild_get_source_tool(struct variable pTarget, struct variable pSource, struct variable *pType,
1001	struct variable pBldTrg, struct variable pBldTrgArch, const char *pszVarName)
1002	{
1003	struct variable *pVar = kbuild_first_prop(pTarget, pSource, NULL, pType, pBldTrg, pBldTrgArch,
1004	"TOOL", sizeof("TOOL") - 1,
1005	"TOOL", sizeof("TOOL") - 1,
1006	pszVarName);
1007	if (!pVar)
1008	fatal(NILF, _("no tool for source `%s' in target `%s'!"), pSource->value, pTarget->value);
1009	return pVar;
1010	}
1011
1012
1013	/* Implements _SOURCE_TOOL. */
1014	char *
1015	func_kbuild_source_tool(char o, char argv, const char pszFuncName)
1016	{
1017	struct variable *pVar = kbuild_get_source_tool(kbuild_get_variable_n(ST("target")),
1018	kbuild_get_variable_n(ST("source")),
1019	kbuild_get_variable_n(ST("type")),
1020	kbuild_get_variable_n(ST("bld_trg")),
1021	kbuild_get_variable_n(ST("bld_trg_arch")),
1022	argv[0]);
1023	if (pVar)
1024	o = variable_buffer_output(o, pVar->value, pVar->value_length);
1025	(void)pszFuncName;
1026	return o;
1027
1028	}
1029
1030
1031	/* This has been extended a bit, it's now identical to _SOURCE_TOOL.
1032	$(firstword \
1033	$($(target)_$(source)_OBJSUFF.$(bld_trg).$(bld_trg_arch))\
1034	$($(target)_$(source)_OBJSUFF.$(bld_trg))\
1035	$($(target)_$(source)_OBJSUFF)\
1036	$($(source)_OBJSUFF.$(bld_trg).$(bld_trg_arch))\
1037	$($(source)_OBJSUFF.$(bld_trg))\
1038	$($(source)_OBJSUFF)\
1039	$($(target)_OBJSUFF.$(bld_trg).$(bld_trg_arch))\
1040	$($(target)_OBJSUFF.$(bld_trg))\
1041	$($(target)_OBJSUFF)\
1042	$(TOOL_$(tool)_$(type)OBJSUFF.$(bld_trg).$(bld_trg_arch))\
1043	$(TOOL_$(tool)_$(type)OBJSUFF.$(bld_trg))\
1044	$(TOOL_$(tool)_$(type)OBJSUFF)\
1045	$(SUFF_OBJ))
1046	*/
1047	static struct variable *
1048	kbuild_get_object_suffix(struct variable pTarget, struct variable pSource,
1049	struct variable pTool, struct variable pType,
1050	struct variable pBldTrg, struct variable pBldTrgArch, const char *pszVarName)
1051	{
1052	struct variable *pVar = kbuild_first_prop(pTarget, pSource, pTool, pType, pBldTrg, pBldTrgArch,
1053	"SUFF_OBJ", sizeof("SUFF_OBJ") - 1,
1054	"OBJSUFF", sizeof("OBJSUFF") - 1,
1055	pszVarName);
1056	if (!pVar)
1057	fatal(NILF, _("no OBJSUFF attribute or SUFF_OBJ default for source `%s' in target `%s'!"), pSource->value, pTarget->value);
1058	return pVar;
1059	}
1060
1061
1062	/* */
1063	char *
1064	func_kbuild_object_suffix(char o, char argv, const char pszFuncName)
1065	{
1066	struct variable *pVar = kbuild_get_object_suffix(kbuild_get_variable_n(ST("target")),
1067	kbuild_get_variable_n(ST("source")),
1068	kbuild_get_variable_n(ST("tool")),
1069	kbuild_get_variable_n(ST("type")),
1070	kbuild_get_variable_n(ST("bld_trg")),
1071	kbuild_get_variable_n(ST("bld_trg_arch")),
1072	argv[0]);
1073	if (pVar)
1074	o = variable_buffer_output(o, pVar->value, pVar->value_length);
1075	(void)pszFuncName;
1076	return o;
1077
1078	}
1079
1080
1081	/*
1082	## Figure out where to put object files.
1083	# @param $1 source file
1084	# @param $2 normalized main target
1085	# @remark There are two major hacks here:
1086	# 1. Source files in the output directory are translated into a gen/ subdir.
1087	# 2. Catch anyone specifying $(PATH_SUB_CURRENT)/sourcefile.c.
1088	_OBJECT_BASE = $(PATH_TARGET)/$(2)/$(call no-root-slash,$(call no-drive,$(basename \
1089	$(patsubst $(PATH_ROOT)/%,%,$(patsubst $(PATH_SUB_CURRENT)/%,%,$(patsubst $(PATH_TARGET)/$(2)/%,gen/%,$(1)))))))
1090	*/
1091	static struct variable *
1092	kbuild_get_object_base(struct variable pTarget, struct variable pSource, const char *pszVarName)
1093	{
1094	struct variable *pPathTarget = kbuild_get_variable_n(ST("PATH_TARGET"));
1095	struct variable *pPathRoot = kbuild_get_variable_n(ST("PATH_ROOT"));
1096	struct variable *pPathSubCur = kbuild_get_variable_n(ST("PATH_SUB_CURRENT"));
1097	const char *pszSrcPrefix = NULL;
1098	size_t cchSrcPrefix = 0;
1099	size_t cchSrc = 0;
1100	const char *pszSrcEnd;
1101	char *pszSrc;
1102	char *pszResult;
1103	char *psz;
1104	char *pszDot;
1105	size_t cch;
1106
1107	/*
1108	* Strip the source filename of any uncessary leading path and root specs.
1109	*/
1110	/* */
1111	if ( pSource->value_length > pPathTarget->value_length
1112	&& !strncmp(pSource->value, pPathTarget->value, pPathTarget->value_length))
1113	{
1114	pszSrc = pSource->value + pPathTarget->value_length;
1115	pszSrcPrefix = "gen/";
1116	cchSrcPrefix = sizeof("gen/") - 1;
1117	if ( *pszSrc == '/'
1118	&& !strncmp(pszSrc + 1, pTarget->value, pTarget->value_length)
1119	&& ( pszSrc[pTarget->value_length + 1] == '/'
1120	\|\| pszSrc[pTarget->value_length + 1] == '\0'))
1121	pszSrc += 1 + pTarget->value_length;
1122	}
1123	else if ( pSource->value_length > pPathRoot->value_length
1124	&& !strncmp(pSource->value, pPathRoot->value, pPathRoot->value_length))
1125	{
1126	pszSrc = pSource->value + pPathRoot->value_length;
1127	if ( *pszSrc == '/'
1128	&& !strncmp(pszSrc + 1, pPathSubCur->value, pPathSubCur->value_length)
1129	&& ( pszSrc[pPathSubCur->value_length + 1] == '/'
1130	\|\| pszSrc[pPathSubCur->value_length + 1] == '\0'))
1131	pszSrc += 1 + pPathSubCur->value_length;
1132	}
1133	else
1134	pszSrc = pSource->value;
1135
1136	/* skip root specification */
1137	#ifdef HAVE_DOS_PATHS
1138	if (isalpha(pszSrc[0]) && pszSrc[1] == ':')
1139	pszSrc += 2;
1140	#endif
1141	while (*pszSrc == '/'
1142	#ifdef HAVE_DOS_PATHS
1143	\|\| *pszSrc == '\\'
1144	#endif
1145	)
1146	pszSrc++;
1147
1148	/* drop the source extension. */
1149	pszSrcEnd = pSource->value + pSource->value_length;
1150	for (;;)
1151	{
1152	pszSrcEnd--;
1153	if ( pszSrcEnd <= pszSrc
1154	\|\| *pszSrcEnd == '/'
1155	#ifdef HAVE_DOS_PATHS
1156	\|\| *pszSrcEnd == '\\'
1157	\|\| *pszSrcEnd == ':'
1158	#endif
1159	)
1160	{
1161	pszSrcEnd = pSource->value + pSource->value_length;
1162	break;
1163	}
1164	if (*pszSrcEnd == '.')
1165	break;
1166	}
1167
1168	/*
1169	* Assemble the string on the heap and define the objbase variable
1170	* which we then return.
1171	*/
1172	cchSrc = pszSrcEnd - pszSrc;
1173	cch = pPathTarget->value_length
1174	+ 1 /* slash */
1175	+ pTarget->value_length
1176	+ 1 /* slash */
1177	+ cchSrcPrefix
1178	+ cchSrc
1179	+ 1;
1180	psz = pszResult = xmalloc(cch);
1181
1182	memcpy(psz, pPathTarget->value, pPathTarget->value_length); psz += pPathTarget->value_length;
1183	*psz++ = '/';
1184	memcpy(psz, pTarget->value, pTarget->value_length); psz += pTarget->value_length;
1185	*psz++ = '/';
1186	if (pszSrcPrefix)
1187	{
1188	memcpy(psz, pszSrcPrefix, cchSrcPrefix);
1189	psz += cchSrcPrefix;
1190	}
1191	pszDot = psz;
1192	memcpy(psz, pszSrc, cchSrc); psz += cchSrc;
1193	*psz = '\0';
1194
1195	/* convert '..' path elements in the source to 'dt'. */
1196	while ((pszDot = memchr(pszDot, '.', psz - pszDot)) != NULL)
1197	{
1198	if ( pszDot[1] == '.'
1199	&& ( pszDot == psz
1200	\|\| pszDot[-1] == '/'
1201	#ifdef HAVE_DOS_PATHS
1202	\|\| pszDot[-1] == '\\'
1203	\|\| pszDot[-1] == ':'
1204	#endif
1205	)
1206	&& ( !pszDot[2]
1207	\|\| pszDot[2] == '/'
1208	#ifdef HAVE_DOS_PATHS
1209	\|\| pszDot[2] == '\\'
1210	\|\| pszDot[2] == ':'
1211	#endif
1212	)
1213	)
1214	{
1215	*pszDot++ = 'd';
1216	*pszDot++ = 't';
1217	}
1218	else
1219	pszDot++;
1220	}
1221
1222	/*
1223	* Define the variable in the current set and return it.
1224	*/
1225	return define_variable_vl(pszVarName, strlen(pszVarName), pszResult, cch - 1,
1226	0 /* use pszResult /, o_local, 0 / !recursive */);
1227	}
1228
1229
1230	/* Implements _OBJECT_BASE. */
1231	char *
1232	func_kbuild_object_base(char o, char argv, const char pszFuncName)
1233	{
1234	struct variable *pVar = kbuild_get_object_base(kbuild_lookup_variable("target"),
1235	kbuild_lookup_variable("source"),
1236	argv[0]);
1237	if (pVar)
1238	o = variable_buffer_output(o, pVar->value, pVar->value_length);
1239	(void)pszFuncName;
1240	return o;
1241
1242	}
1243
1244
1245	struct kbuild_sdks
1246	{
1247	char *apsz[4];
1248	struct variable *pa;
1249	unsigned c;
1250	unsigned iGlobal;
1251	unsigned cGlobal;
1252	unsigned iTarget;
1253	unsigned cTarget;
1254	unsigned iSource;
1255	unsigned cSource;
1256	unsigned iTargetSource;
1257	unsigned cTargetSource;
1258	unsigned int cchMax;
1259	};
1260
1261
1262	/* Fills in the SDK struct (remember to free it). */
1263	static void
1264	kbuild_get_sdks(struct kbuild_sdks pSdks, struct variable pTarget, struct variable *pSource,
1265	struct variable pBldType, struct variable pBldTrg, struct variable *pBldTrgArch)
1266	{
1267	unsigned i;
1268	unsigned j;
1269	size_t cchTmp, cch;
1270	char *pszTmp;
1271	unsigned cchCur;
1272	char *pszCur;
1273	const char *pszIterator;
1274
1275	/** @todo rewrite this to avoid sprintf and allocated_varaible_expand_2. */
1276
1277	/* basic init. */
1278	pSdks->cchMax = 0;
1279	pSdks->pa = NULL;
1280	pSdks->c = 0;
1281	i = 0;
1282
1283	/* determin required tmp variable name space. */
1284	cchTmp = sizeof("$(__SDKS) $(__SDKS.) $(__SDKS.) $(__SDKS.) $(__SDKS..)")
1285	+ (pTarget->value_length + pSource->value_length) * 5
1286	+ pBldType->value_length
1287	+ pBldTrg->value_length
1288	+ pBldTrgArch->value_length
1289	+ pBldTrg->value_length + pBldTrgArch->value_length;
1290	pszTmp = alloca(cchTmp);
1291
1292	/* the global sdks. */
1293	pSdks->iGlobal = i;
1294	pSdks->cGlobal = 0;
1295	cch = sprintf(pszTmp, "$(SDKS) $(SDKS.%s) $(SDKS.%s) $(SDKS.%s) $(SDKS.%s.%s)",
1296	pBldType->value,
1297	pBldTrg->value,
1298	pBldTrgArch->value,
1299	pBldTrg->value, pBldTrgArch->value);
1300	pszIterator = pSdks->apsz[0] = allocated_variable_expand_2(pszTmp, cch, NULL);
1301	while ((pszCur = find_next_token(&pszIterator, &cchCur)) != 0)
1302	pSdks->cGlobal++;
1303	i += pSdks->cGlobal;
1304
1305	/* the target sdks.*/
1306	pSdks->iTarget = i;
1307	pSdks->cTarget = 0;
1308	cch = sprintf(pszTmp, "$(%s_SDKS) $(%s_SDKS.%s) $(%s_SDKS.%s) $(%s_SDKS.%s) $(%s_SDKS.%s.%s)",
1309	pTarget->value,
1310	pTarget->value, pBldType->value,
1311	pTarget->value, pBldTrg->value,
1312	pTarget->value, pBldTrgArch->value,
1313	pTarget->value, pBldTrg->value, pBldTrgArch->value);
1314	pszIterator = pSdks->apsz[1] = allocated_variable_expand_2(pszTmp, cch, NULL);
1315	while ((pszCur = find_next_token(&pszIterator, &cchCur)) != 0)
1316	pSdks->cTarget++;
1317	i += pSdks->cTarget;
1318
1319	/* the source sdks.*/
1320	pSdks->iSource = i;
1321	pSdks->cSource = 0;
1322	cch = sprintf(pszTmp, "$(%s_SDKS) $(%s_SDKS.%s) $(%s_SDKS.%s) $(%s_SDKS.%s) $(%s_SDKS.%s.%s)",
1323	pSource->value,
1324	pSource->value, pBldType->value,
1325	pSource->value, pBldTrg->value,
1326	pSource->value, pBldTrgArch->value,
1327	pSource->value, pBldTrg->value, pBldTrgArch->value);
1328	pszIterator = pSdks->apsz[2] = allocated_variable_expand_2(pszTmp, cch, NULL);
1329	while ((pszCur = find_next_token(&pszIterator, &cchCur)) != 0)
1330	pSdks->cSource++;
1331	i += pSdks->cSource;
1332
1333	/* the target + source sdks. */
1334	pSdks->iTargetSource = i;
1335	pSdks->cTargetSource = 0;
1336	cch = sprintf(pszTmp, "$(%s_%s_SDKS) $(%s_%s_SDKS.%s) $(%s_%s_SDKS.%s) $(%s_%s_SDKS.%s) $(%s_%s_SDKS.%s.%s)",
1337	pTarget->value, pSource->value,
1338	pTarget->value, pSource->value, pBldType->value,
1339	pTarget->value, pSource->value, pBldTrg->value,
1340	pTarget->value, pSource->value, pBldTrgArch->value,
1341	pTarget->value, pSource->value, pBldTrg->value, pBldTrgArch->value);
1342	assert(cch < cchTmp); (void)cch;
1343	pszIterator = pSdks->apsz[3] = allocated_variable_expand_2(pszTmp, cch, NULL);
1344	while ((pszCur = find_next_token(&pszIterator, &cchCur)) != 0)
1345	pSdks->cTargetSource++;
1346	i += pSdks->cTargetSource;
1347
1348	pSdks->c = i;
1349	if (!i)
1350	return;
1351
1352	/*
1353	* Allocate the variable array and create the variables.
1354	*/
1355	pSdks->pa = (struct variable )xmalloc(sizeof(pSdks->pa[0]) i);
1356	memset(pSdks->pa, 0, sizeof(pSdks->pa[0]) * i);
1357	for (i = j = 0; j < sizeof(pSdks->apsz) / sizeof(pSdks->apsz[0]); j++)
1358	{
1359	pszIterator = pSdks->apsz[j];
1360	while ((pszCur = find_next_token(&pszIterator, &cchCur)) != 0)
1361	{
1362	pSdks->pa[i].value = pszCur;
1363	pSdks->pa[i].value_length = cchCur;
1364	i++;
1365	}
1366	}
1367	assert(i == pSdks->c);
1368
1369	/* terminate them (find_next_token won't work if we terminate them in the previous loop). */
1370	while (i-- > 0)
1371	{
1372	pSdks->pa[i].value[pSdks->pa[i].value_length] = '\0';
1373
1374	/* calc the max variable length too. */
1375	if (pSdks->cchMax < (unsigned int)pSdks->pa[i].value_length)
1376	pSdks->cchMax = pSdks->pa[i].value_length;
1377	}
1378	}
1379
1380
1381	/* releases resources allocated in the kbuild_get_sdks. */
1382	static void
1383	kbuild_put_sdks(struct kbuild_sdks *pSdks)
1384	{
1385	unsigned j;
1386	for (j = 0; j < sizeof(pSdks->apsz) / sizeof(pSdks->apsz[0]); j++)
1387	free(pSdks->apsz[j]);
1388	free(pSdks->pa);
1389	}
1390
1391
1392	/* this kind of stuff:
1393
1394	defs := $(kb-src-exp defs)
1395	$(TOOL_$(tool)_DEFS)\
1396	$(TOOL_$(tool)_DEFS.$(bld_type))\
1397	$(TOOL_$(tool)_DEFS.$(bld_trg))\
1398	$(TOOL_$(tool)_DEFS.$(bld_trg_arch))\
1399	$(TOOL_$(tool)_DEFS.$(bld_trg).$(bld_trg_arch))\
1400	$(TOOL_$(tool)_DEFS.$(bld_trg_cpu))\
1401	$(TOOL_$(tool)_$(type)DEFS)\
1402	$(TOOL_$(tool)_$(type)DEFS.$(bld_type))\
1403	$(foreach sdk, $(SDKS.$(bld_trg)) \
1404	$(SDKS.$(bld_trg).$(bld_trg_arch)) \
1405	$(SDKS.$(bld_type)) \
1406	$(SDKS),\
1407	$(SDK_$(sdk)_DEFS)\
1408	$(SDK_$(sdk)_DEFS.$(bld_type))\
1409	$(SDK_$(sdk)_DEFS.$(bld_trg))\
1410	$(SDK_$(sdk)_DEFS.$(bld_trg_arch))\
1411	$(SDK_$(sdk)_DEFS.$(bld_trg).$(bld_trg_arch))\
1412	$(SDK_$(sdk)_DEFS.$(bld_trg_cpu))\
1413	$(SDK_$(sdk)_$(type)DEFS)\
1414	$(SDK_$(sdk)_$(type)DEFS.$(bld_type))\
1415	$(SDK_$(sdk)_$(type)DEFS.$(bld_trg))\
1416	$(SDK_$(sdk)_$(type)DEFS.$(bld_trg_arch))\
1417	$(SDK_$(sdk)_$(type)DEFS.$(bld_trg).$(bld_trg_arch))\
1418	$(SDK_$(sdk)_$(type)DEFS.$(bld_trg_cpu)))\
1419	$(DEFS)\
1420	$(DEFS.$(bld_type))\
1421	$(DEFS.$(bld_trg))\
1422	$(DEFS.$(bld_trg_arch))\
1423	$(DEFS.$(bld_trg).$(bld_trg_arch))\
1424	$(DEFS.$(bld_trg_cpu))\
1425	$($(type)DEFS)\
1426	$($(type)DEFS.$(bld_type))\
1427	$($(type)DEFS.$(bld_trg))\
1428	$($(type)DEFS.$(bld_trg_arch))\
1429	$($(type)DEFS.$(bld_trg).$(bld_trg_arch))\
1430	$($(type)DEFS.$(bld_trg_cpu))\
1431	$(foreach sdk, $($(target)_SDKS.$(bld_trg)) \
1432	$($(target)_SDKS.$(bld_trg).$(bld_trg_arch)) \
1433	$($(target)_SDKS.$(bld_type)) \
1434	$($(target)_SDKS),\
1435	$(SDK_$(sdk)_DEFS)\
1436	$(SDK_$(sdk)_DEFS.$(bld_type))\
1437	$(SDK_$(sdk)_DEFS.$(bld_trg))\
1438	$(SDK_$(sdk)_DEFS.$(bld_trg_arch))\
1439	$(SDK_$(sdk)_DEFS.$(bld_trg).$(bld_trg_arch))\
1440	$(SDK_$(sdk)_DEFS.$(bld_trg_cpu))\
1441	$(SDK_$(sdk)_$(type)DEFS)\
1442	$(SDK_$(sdk)_$(type)DEFS.$(bld_type))\
1443	$(SDK_$(sdk)_$(type)DEFS.$(bld_trg))\
1444	$(SDK_$(sdk)_$(type)DEFS.$(bld_trg_arch))\
1445	$(SDK_$(sdk)_$(type)DEFS.$(bld_trg).$(bld_trg_arch))\
1446	$(SDK_$(sdk)_$(type)DEFS.$(bld_trg_cpu)))\
1447	$($(target)_DEFS)\
1448	$($(target)_DEFS.$(bld_type))\
1449	$($(target)_DEFS.$(bld_trg))\
1450	$($(target)_DEFS.$(bld_trg_arch))\
1451	$($(target)_DEFS.$(bld_trg).$(bld_trg_arch))\
1452	$($(target)_DEFS.$(bld_trg_cpu))\
1453	$($(target)_$(type)DEFS)\
1454	$($(target)_$(type)DEFS.$(bld_type))\
1455	$($(target)_$(type)DEFS.$(bld_trg))\
1456	$($(target)_$(type)DEFS.$(bld_trg_arch))\
1457	$($(target)_$(type)DEFS.$(bld_trg).$(bld_trg_arch))\
1458	$($(target)_$(type)DEFS.$(bld_trg_cpu))\
1459	$(foreach sdk, $($(source)_SDKS.$(bld_trg)) \
1460	$($(source)_SDKS.$(bld_trg).$(bld_trg_arch)) \
1461	$($(source)_SDKS.$(bld_type)) \
1462	$($(source)_SDKS),\
1463	$(SDK_$(sdk)_DEFS)\
1464	$(SDK_$(sdk)_DEFS.$(bld_type))\
1465	$(SDK_$(sdk)_DEFS.$(bld_trg))\
1466	$(SDK_$(sdk)_DEFS.$(bld_trg_arch))\
1467	$(SDK_$(sdk)_DEFS.$(bld_trg).$(bld_trg_arch))\
1468	$(SDK_$(sdk)_DEFS.$(bld_trg_cpu))\
1469	$(SDK_$(sdk)_$(type)DEFS)\
1470	$(SDK_$(sdk)_$(type)DEFS.$(bld_type))\
1471	$(SDK_$(sdk)_$(type)DEFS.$(bld_trg))\
1472	$(SDK_$(sdk)_$(type)DEFS.$(bld_trg_arch))\
1473	$(SDK_$(sdk)_$(type)DEFS.$(bld_trg).$(bld_trg_arch))\
1474	$(SDK_$(sdk)_$(type)DEFS.$(bld_trg_cpu)))\
1475	$($(source)_DEFS)\
1476	$($(source)_DEFS.$(bld_type))\
1477	$($(source)_DEFS.$(bld_trg))\
1478	$($(source)_DEFS.$(bld_trg_arch))\
1479	$($(source)_DEFS.$(bld_trg).$(bld_trg_arch))\
1480	$($(source)_DEFS.$(bld_trg_cpu))\
1481	$($(source)_$(type)DEFS)\
1482	$($(source)_$(type)DEFS.$(bld_type))\
1483	$($(source)_$(type)DEFS.$(bld_trg))\
1484	$($(source)_$(type)DEFS.$(bld_trg_arch))\
1485	$($(source)_$(type)DEFS.$(bld_trg).$(bld_trg_arch))\
1486	$($(source)_$(type)DEFS.$(bld_trg_cpu))\
1487	$(foreach sdk, $($(target)_$(source)_SDKS.$(bld_trg)) \
1488	$($(target)_$(source)_SDKS.$(bld_trg).$(bld_trg_arch)) \
1489	$($(target)_$(source)_SDKS.$(bld_type)) \
1490	$($(target)_$(source)_SDKS),\
1491	$(SDK_$(sdk)_DEFS)\
1492	$(SDK_$(sdk)_DEFS.$(bld_type))\
1493	$(SDK_$(sdk)_DEFS.$(bld_trg))\
1494	$(SDK_$(sdk)_DEFS.$(bld_trg_arch))\
1495	$(SDK_$(sdk)_DEFS.$(bld_trg).$(bld_trg_arch))\
1496	$(SDK_$(sdk)_DEFS.$(bld_trg_cpu))\
1497	$(SDK_$(sdk)_$(type)DEFS)\
1498	$(SDK_$(sdk)_$(type)DEFS.$(bld_type))\
1499	$(SDK_$(sdk)_$(type)DEFS.$(bld_trg))\
1500	$(SDK_$(sdk)_$(type)DEFS.$(bld_trg_arch))\
1501	$(SDK_$(sdk)_$(type)DEFS.$(bld_trg).$(bld_trg_arch))\
1502	$(SDK_$(sdk)_$(type)DEFS.$(bld_trg_cpu)))\
1503	$($(target)_$(source)_DEFS)\
1504	$($(target)_$(source)_DEFS.$(bld_type))\
1505	$($(target)_$(source)_DEFS.$(bld_trg))\
1506	$($(target)_$(source)_DEFS.$(bld_trg_arch))\
1507	$($(target)_$(source)_DEFS.$(bld_trg).$(bld_trg_arch))\
1508	$($(target)_$(source)_DEFS.$(bld_trg_cpu))\
1509	$($(target)_$(source)_$(type)DEFS)\
1510	$($(target)_$(source)_$(type)DEFS.$(bld_type))\
1511	$($(target)_$(source)_$(type)DEFS.$(bld_trg))\
1512	$($(target)_$(source)_$(type)DEFS.$(bld_trg_arch))\
1513	$($(target)_$(source)_$(type)DEFS.$(bld_trg).$(bld_trg_arch))\
1514	$($(target)_$(source)_$(type)DEFS.$(bld_trg_cpu))
1515	*/
1516	static struct variable *
1517	kbuild_collect_source_prop(struct variable pTarget, struct variable pSource,
1518	struct variable pTool, struct kbuild_sdks pSdks,
1519	struct variable pType, struct variable pBldType,
1520	struct variable pBldTrg, struct variable pBldTrgArch, struct variable *pBldTrgCpu,
1521	struct variable *pDefPath,
1522	const char *pszProp, size_t cchProp,
1523	const char *pszVarName, size_t cchVarName,
1524	int iDirection)
1525	{
1526	struct variable *pVar;
1527	unsigned iSdk, iSdkEnd;
1528	int cVars, iVar;
1529	size_t cchTotal, cchBuf;
1530	char pszResult, pszBuf, psz, psz2, *psz3;
1531	struct
1532	{
1533	struct variable *pVar;
1534	unsigned int cchExp;
1535	char *pszExp;
1536	} *paVars;
1537
1538	assert(iDirection == 1 \|\| iDirection == -1);
1539
1540	/*
1541	* Calc and allocate a too big name buffer.
1542	*/
1543	cchBuf = cchProp + 1
1544	+ pTarget->value_length + 1
1545	+ pSource->value_length + 1
1546	+ pSdks->cchMax + 1
1547	+ (pTool ? pTool->value_length + 1 : 0)
1548	+ pType->value_length + 1
1549	+ pBldTrg->value_length + 1
1550	+ pBldTrgArch->value_length + 1
1551	+ pBldTrgCpu->value_length + 1
1552	+ pBldType->value_length + 1;
1553	pszBuf = xmalloc(cchBuf);
1554
1555	/*
1556	* Get the variables.
1557	*
1558	* The compiler will get a heart attack when it sees this code ... ;-)
1559	*/
1560	cVars = 12 * (pSdks->c + 5);
1561	paVars = alloca(cVars * sizeof(paVars[0]));
1562
1563	iVar = 0;
1564	cchTotal = 0;
1565
1566	#define ADD_VAR(pVar) do { my_memcpy(psz, (pVar)->value, (pVar)->value_length); psz += (pVar)->value_length; } while (0)
1567	#define ADD_STR(pszStr, cchStr) do { my_memcpy(psz, (pszStr), (cchStr)); psz += (cchStr); } while (0)
1568	#define ADD_CSTR(pszStr) do { my_memcpy(psz, pszStr, sizeof(pszStr) - 1); psz += sizeof(pszStr) - 1; } while (0)
1569	#define ADD_CH(ch) do { *psz++ = (ch); } while (0)
1570	#define DO_VAR_LOOKUP() \
1571	do { \
1572	pVar = kbuild_lookup_variable_n(pszBuf, psz - pszBuf); \
1573	if (pVar) \
1574	{ \
1575	paVars[iVar].pVar = pVar; \
1576	if ( !pVar->recursive \
1577	\|\| !memchr(pVar->value, '$', pVar->value_length)) \
1578	{ \
1579	paVars[iVar].pszExp = pVar->value; \
1580	paVars[iVar].cchExp = pVar->value_length; \
1581	if (pDefPath && paVars[iVar].cchExp) \
1582	kbuild_apply_defpath(pDefPath, &paVars[iVar].pszExp, &paVars[iVar].cchExp, NULL, 0); \
1583	if (paVars[iVar].cchExp) \
1584	{ \
1585	cchTotal += paVars[iVar].cchExp + 1; \
1586	iVar++; \
1587	} \
1588	} \
1589	else \
1590	{ \
1591	paVars[iVar].pszExp = allocated_variable_expand_2(pVar->value, pVar->value_length, &paVars[iVar].cchExp); \
1592	if (pDefPath && paVars[iVar].cchExp) \
1593	kbuild_apply_defpath(pDefPath, &paVars[iVar].pszExp, &paVars[iVar].cchExp, NULL, 1); \
1594	if (paVars[iVar].cchExp) \
1595	{ \
1596	cchTotal += paVars[iVar].cchExp + 1; \
1597	iVar++; \
1598	} \
1599	else \
1600	free(paVars[iVar].pszExp); \
1601	} \
1602	} \
1603	} while (0)
1604	#define DO_SINGLE_PSZ3_VARIATION() \
1605	do { \
1606	DO_VAR_LOOKUP(); \
1607	\
1608	ADD_CH('.'); \
1609	psz3 = psz; \
1610	ADD_VAR(pBldType); \
1611	DO_VAR_LOOKUP(); \
1612	\
1613	psz = psz3; \
1614	ADD_VAR(pBldTrg); \
1615	DO_VAR_LOOKUP(); \
1616	\
1617	psz = psz3; \
1618	ADD_VAR(pBldTrgArch); \
1619	DO_VAR_LOOKUP(); \
1620	\
1621	psz = psz3; \
1622	ADD_VAR(pBldTrg); \
1623	ADD_CH('.'); \
1624	ADD_VAR(pBldTrgArch); \
1625	DO_VAR_LOOKUP(); \
1626	\
1627	psz = psz3; \
1628	ADD_VAR(pBldTrgCpu); \
1629	DO_VAR_LOOKUP(); \
1630	} while (0)
1631
1632	#define DO_DOUBLE_PSZ2_VARIATION() \
1633	do { \
1634	psz2 = psz; \
1635	ADD_STR(pszProp, cchProp); \
1636	DO_SINGLE_PSZ3_VARIATION(); \
1637	\
1638	/* add prop before type */ \
1639	psz = psz2; \
1640	ADD_VAR(pType); \
1641	ADD_STR(pszProp, cchProp); \
1642	DO_SINGLE_PSZ3_VARIATION(); \
1643	} while (0)
1644
1645	/* the tool (lowest priority). */
1646	psz = pszBuf;
1647	ADD_CSTR("TOOL_");
1648	ADD_VAR(pTool);
1649	ADD_CH('_');
1650	DO_DOUBLE_PSZ2_VARIATION();
1651
1652
1653	/* the global sdks. */
1654	iSdkEnd = iDirection == 1 ? pSdks->iGlobal + pSdks->cGlobal : pSdks->iGlobal - 1;
1655	for (iSdk = iDirection == 1 ? pSdks->iGlobal : pSdks->iGlobal + pSdks->cGlobal - 1;
1656	iSdk != iSdkEnd;
1657	iSdk += iDirection)
1658	{
1659	struct variable *pSdk = &pSdks->pa[iSdk];
1660	psz = pszBuf;
1661	ADD_CSTR("SDK_");
1662	ADD_VAR(pSdk);
1663	ADD_CH('_');
1664	DO_DOUBLE_PSZ2_VARIATION();
1665	}
1666
1667	/* the globals. */
1668	psz = pszBuf;
1669	DO_DOUBLE_PSZ2_VARIATION();
1670
1671
1672	/* the target sdks. */
1673	iSdkEnd = iDirection == 1 ? pSdks->iTarget + pSdks->cTarget : pSdks->iTarget - 1;
1674	for (iSdk = iDirection == 1 ? pSdks->iTarget : pSdks->iTarget + pSdks->cTarget - 1;
1675	iSdk != iSdkEnd;
1676	iSdk += iDirection)
1677	{
1678	struct variable *pSdk = &pSdks->pa[iSdk];
1679	psz = pszBuf;
1680	ADD_CSTR("SDK_");
1681	ADD_VAR(pSdk);
1682	ADD_CH('_');
1683	DO_DOUBLE_PSZ2_VARIATION();
1684	}
1685
1686	/* the target. */
1687	psz = pszBuf;
1688	ADD_VAR(pTarget);
1689	ADD_CH('_');
1690	DO_DOUBLE_PSZ2_VARIATION();
1691
1692	/* the source sdks. */
1693	iSdkEnd = iDirection == 1 ? pSdks->iSource + pSdks->cSource : pSdks->iSource - 1;
1694	for (iSdk = iDirection == 1 ? pSdks->iSource : pSdks->iSource + pSdks->cSource - 1;
1695	iSdk != iSdkEnd;
1696	iSdk += iDirection)
1697	{
1698	struct variable *pSdk = &pSdks->pa[iSdk];
1699	psz = pszBuf;
1700	ADD_CSTR("SDK_");
1701	ADD_VAR(pSdk);
1702	ADD_CH('_');
1703	DO_DOUBLE_PSZ2_VARIATION();
1704	}
1705
1706	/* the source. */
1707	psz = pszBuf;
1708	ADD_VAR(pSource);
1709	ADD_CH('_');
1710	DO_DOUBLE_PSZ2_VARIATION();
1711
1712	/* the target + source sdks. */
1713	iSdkEnd = iDirection == 1 ? pSdks->iTargetSource + pSdks->cTargetSource : pSdks->iTargetSource - 1;
1714	for (iSdk = iDirection == 1 ? pSdks->iTargetSource : pSdks->iTargetSource + pSdks->cTargetSource - 1;
1715	iSdk != iSdkEnd;
1716	iSdk += iDirection)
1717	{
1718	struct variable *pSdk = &pSdks->pa[iSdk];
1719	psz = pszBuf;
1720	ADD_CSTR("SDK_");
1721	ADD_VAR(pSdk);
1722	ADD_CH('_');
1723	DO_DOUBLE_PSZ2_VARIATION();
1724	}
1725
1726	/* the target + source. */
1727	psz = pszBuf;
1728	ADD_VAR(pTarget);
1729	ADD_CH('_');
1730	ADD_VAR(pSource);
1731	ADD_CH('_');
1732	DO_DOUBLE_PSZ2_VARIATION();
1733
1734	free(pszBuf);
1735
1736	assert(iVar <= cVars);
1737	cVars = iVar;
1738
1739	/*
1740	* Construct the result value.
1741	*/
1742	if (!cVars \|\| !cchTotal)
1743	pVar = define_variable_vl(pszVarName, cchVarName, "", 0,
1744	1 /* duplicate value / , o_local, 0 / !recursive */);
1745	else
1746	{
1747	psz = pszResult = xmalloc(cchTotal + 1);
1748	if (iDirection == 1)
1749	{
1750	for (iVar = 0; iVar < cVars; iVar++)
1751	{
1752	my_memcpy(psz, paVars[iVar].pszExp, paVars[iVar].cchExp);
1753	psz += paVars[iVar].cchExp;
1754	*psz++ = ' ';
1755	if (paVars[iVar].pszExp != paVars[iVar].pVar->value)
1756	free(paVars[iVar].pszExp);
1757	}
1758	}
1759	else
1760	{
1761	iVar = cVars;
1762	while (iVar-- > 0)
1763	{
1764	my_memcpy(psz, paVars[iVar].pszExp, paVars[iVar].cchExp);
1765	psz += paVars[iVar].cchExp;
1766	*psz++ = ' ';
1767	if (paVars[iVar].pszExp != paVars[iVar].pVar->value)
1768	free(paVars[iVar].pszExp);
1769	}
1770
1771	}
1772	assert(psz != pszResult);
1773	assert(cchTotal == (size_t)(psz - pszResult));
1774	psz[-1] = '\0';
1775	cchTotal--;
1776
1777	pVar = define_variable_vl(pszVarName, cchVarName, pszResult, cchTotal,
1778	0 /* take pszResult / , o_local, 0 / !recursive */);
1779	}
1780
1781	return pVar;
1782
1783	#undef ADD_VAR
1784	#undef ADD_STR
1785	#undef ADD_CSTR
1786	#undef ADD_CH
1787	#undef DO_VAR_LOOKUP
1788	#undef DO_DOUBLE_PSZ2_VARIATION
1789	#undef DO_SINGLE_PSZ3_VARIATION
1790	}
1791
1792
1793	/* get a source property. */
1794	char *
1795	func_kbuild_source_prop(char o, char argv, const char pszFuncName)
1796	{
1797	struct variable *pTarget = kbuild_get_variable_n(ST("target"));
1798	struct variable *pSource = kbuild_get_variable_n(ST("source"));
1799	struct variable *pDefPath = NULL;
1800	struct variable *pType = kbuild_get_variable_n(ST("type"));
1801	struct variable *pTool = kbuild_get_variable_n(ST("tool"));
1802	struct variable *pBldType = kbuild_get_variable_n(ST("bld_type"));
1803	struct variable *pBldTrg = kbuild_get_variable_n(ST("bld_trg"));
1804	struct variable *pBldTrgArch = kbuild_get_variable_n(ST("bld_trg_arch"));
1805	struct variable *pBldTrgCpu = kbuild_get_variable_n(ST("bld_trg_cpu"));
1806	struct variable *pVar;
1807	struct kbuild_sdks Sdks;
1808	int iDirection;
1809	if (!strcmp(argv[2], "left-to-right"))
1810	iDirection = 1;
1811	else if (!strcmp(argv[2], "right-to-left"))
1812	iDirection = -1;
1813	else
1814	fatal(NILF, _("incorrect direction argument `%s'!"), argv[2]);
1815	if (argv[3])
1816	{
1817	const char *psz = argv[3];
1818	while (isspace(*psz))
1819	psz++;
1820	if (*psz)
1821	pDefPath = kbuild_get_variable_n(ST("defpath"));
1822	}
1823
1824	kbuild_get_sdks(&Sdks, pTarget, pSource, pBldType, pBldTrg, pBldTrgArch);
1825
1826	pVar = kbuild_collect_source_prop(pTarget, pSource, pTool, &Sdks, pType,
1827	pBldType, pBldTrg, pBldTrgArch, pBldTrgCpu,
1828	pDefPath,
1829	argv[0], strlen(argv[0]),
1830	argv[1], strlen(argv[1]),
1831	iDirection);
1832	if (pVar)
1833	o = variable_buffer_output(o, pVar->value, pVar->value_length);
1834
1835	kbuild_put_sdks(&Sdks);
1836	(void)pszFuncName;
1837	return o;
1838	}
1839
1840
1841	/*
1842	dep := $(obj)$(SUFF_DEP)
1843	obj := $(outbase)$(objsuff)
1844	dirdep := $(call DIRDEP,$(dir $(outbase)))
1845	PATH_$(target)_$(source) := $(patsubst %/,%,$(dir $(outbase)))
1846	*/
1847	static struct variable *
1848	kbuild_set_object_name_and_dep_and_dirdep_and_PATH_target_source(struct variable pTarget, struct variable pSource,
1849	struct variable pOutBase, struct variable pObjSuff,
1850	const char pszVarName, struct variable *ppDep,
1851	struct variable **ppDirDep)
1852	{
1853	struct variable *pDepSuff = kbuild_get_variable_n(ST("SUFF_DEP"));
1854	struct variable *pObj;
1855	size_t cch = pOutBase->value_length + pObjSuff->value_length + pDepSuff->value_length + 1;
1856	char *pszResult = alloca(cch);
1857	char pszName, psz;
1858
1859	/*
1860	* dep.
1861	*/
1862	psz = pszResult;
1863	memcpy(psz, pOutBase->value, pOutBase->value_length); psz += pOutBase->value_length;
1864	memcpy(psz, pObjSuff->value, pObjSuff->value_length); psz += pObjSuff->value_length;
1865	memcpy(psz, pDepSuff->value, pDepSuff->value_length + 1);
1866	ppDep = define_variable_vl("dep", 3, pszResult, cch - 1, 1 /dup/, o_local, 0 / !recursive */);
1867
1868	/*
1869	* obj
1870	*/
1871	*psz = '\0';
1872	pObj = define_variable_vl(pszVarName, strlen(pszVarName), pszResult, psz - pszResult,
1873	1/* dup /, o_local, 0 / !recursive */);
1874
1875	/*
1876	* PATH_$(target)_$(source) - this is global!
1877	*/
1878	/* calc variable name. */
1879	cch = sizeof("PATH_")-1 + pTarget->value_length + sizeof("_")-1 + pSource->value_length;
1880	psz = pszName = alloca(cch + 1);
1881	memcpy(psz, "PATH_", sizeof("PATH_") - 1); psz += sizeof("PATH_") - 1;
1882	memcpy(psz, pTarget->value, pTarget->value_length); psz += pTarget->value_length;
1883	*psz++ = '_';
1884	memcpy(psz, pSource->value, pSource->value_length + 1);
1885
1886	/* strip off the filename. */
1887	psz = pszResult + pOutBase->value_length;
1888	for (;;)
1889	{
1890	psz--;
1891	if (psz <= pszResult)
1892	fatal(NULL, "whut!?! no path? result=`%s'", pszResult);
1893	#ifdef HAVE_DOS_PATHS
1894	if (*psz == ':')
1895	{
1896	psz++;
1897	break;
1898	}
1899	#endif
1900	if ( *psz == '/'
1901	#ifdef HAVE_DOS_PATHS
1902	\|\| *psz == '\\'
1903	#endif
1904	)
1905	{
1906	while ( psz - 1 > pszResult
1907	&& psz[-1] == '/'
1908	#ifdef HAVE_DOS_PATHS
1909	\|\| psz[-1] == '\\'
1910	#endif
1911	)
1912	psz--;
1913	#ifdef HAVE_DOS_PATHS
1914	if (psz == pszResult + 2 && pszResult[1] == ':')
1915	psz++;
1916	#endif
1917	break;
1918	}
1919	}
1920	*psz = '\0';
1921
1922	/* set global variable */
1923	define_variable_vl_global(pszName, cch, pszResult, psz - pszResult, 1/dup/, o_file, 0 /* !recursive */, NILF);
1924
1925	/*
1926	* dirdep
1927	*/
1928	if ( psz[-1] != '/'
1929	#ifdef HAVE_DOS_PATHS
1930	&& psz[-1] != '\\'
1931	&& psz[-1] != ':'
1932	#endif
1933	)
1934	{
1935	*psz++ = '/';
1936	*psz = '\0';
1937	}
1938	ppDirDep = define_variable_vl("dirdep", 6, pszResult, psz - pszResult, 1/dup/, o_local, 0 / !recursive */);
1939
1940	return pObj;
1941	}
1942
1943
1944	/* setup the base variables for def_target_source_c_cpp_asm_new:
1945
1946	X := $(kb-src-tool tool)
1947	x := $(kb-obj-base outbase)
1948	x := $(kb-obj-suff objsuff)
1949	obj := $(outbase)$(objsuff)
1950	PATH_$(target)_$(source) := $(patsubst %/,%,$(dir $(outbase)))
1951
1952	x := $(kb-src-prop DEFS,defs,left-to-right)
1953	x := $(kb-src-prop INCS,incs,right-to-left)
1954	x := $(kb-src-prop FLAGS,flags,right-to-left)
1955
1956	x := $(kb-src-prop DEPS,deps,left-to-right)
1957	dirdep := $(call DIRDEP,$(dir $(outbase)))
1958	dep := $(obj)$(SUFF_DEP)
1959	*/
1960	char *
1961	func_kbuild_source_one(char o, char argv, const char pszFuncName)
1962	{
1963	static int s_fNoCompileCmdsDepsDefined = -1;
1964	struct variable *pTarget = kbuild_get_variable_n(ST("target"));
1965	struct variable *pSource = kbuild_get_variable_n(ST("source"));
1966	struct variable *pDefPath = kbuild_get_variable_n(ST("defpath"));
1967	struct variable *pType = kbuild_get_variable_n(ST("type"));
1968	struct variable *pBldType = kbuild_get_variable_n(ST("bld_type"));
1969	struct variable *pBldTrg = kbuild_get_variable_n(ST("bld_trg"));
1970	struct variable *pBldTrgArch= kbuild_get_variable_n(ST("bld_trg_arch"));
1971	struct variable *pBldTrgCpu = kbuild_get_variable_n(ST("bld_trg_cpu"));
1972	struct variable *pTool = kbuild_get_source_tool(pTarget, pSource, pType, pBldTrg, pBldTrgArch, "tool");
1973	struct variable *pOutBase = kbuild_get_object_base(pTarget, pSource, "outbase");
1974	struct variable *pObjSuff = kbuild_get_object_suffix(pTarget, pSource, pTool, pType, pBldTrg, pBldTrgArch, "objsuff");
1975	struct variable pDefs, pIncs, pFlags, pDeps, pOrderDeps, pDirDep, pDep, pVar, pOutput, pOutputMaybe;
1976	struct variable *pObj = kbuild_set_object_name_and_dep_and_dirdep_and_PATH_target_source(pTarget, pSource, pOutBase, pObjSuff, "obj", &pDep, &pDirDep);
1977	int fInstallOldVars = 0;
1978	char pszDstVar, pszDst, pszSrcVar, pszSrc, pszVal, psz;
1979	char *pszSavedVarBuf;
1980	unsigned cchSavedVarBuf;
1981	size_t cch;
1982	struct kbuild_sdks Sdks;
1983	int iVer;
1984
1985	/*
1986	* argv[0] is the function version. Prior to r1792 (early 0.1.5) this
1987	* was undefined and footer.kmk always passed an empty string.
1988	*
1989	* Version 2, as implemented in r1797, will make use of the async
1990	* includedep queue feature. This means the files will be read by one or
1991	* more background threads, leaving the eval'ing to be done later on by
1992	* the main thread (in snap_deps).
1993	*/
1994	if (!argv[0][0])
1995	iVer = 0;
1996	else
1997	switch (argv[0][0] \| (argv[0][1] << 8))
1998	{
1999	case '2': iVer = 2; break;
2000	case '3': iVer = 3; break;
2001	case '4': iVer = 4; break;
2002	case '5': iVer = 5; break;
2003	case '6': iVer = 6; break;
2004	case '7': iVer = 7; break;
2005	case '8': iVer = 8; break;
2006	case '9': iVer = 9; break;
2007	case '0': iVer = 0; break;
2008	case '1': iVer = 1; break;
2009	default:
2010	iVer = 0;
2011	psz = argv[0];
2012	while (isblank((unsigned char)*psz))
2013	psz++;
2014	if (*psz)
2015	iVer = atoi(psz);
2016	break;
2017	}
2018
2019	/*
2020	* Gather properties.
2021	*/
2022	kbuild_get_sdks(&Sdks, pTarget, pSource, pBldType, pBldTrg, pBldTrgArch);
2023
2024	if (pDefPath && !pDefPath->value_length)
2025	pDefPath = NULL;
2026	pDefs = kbuild_collect_source_prop(pTarget, pSource, pTool, &Sdks, pType, pBldType, pBldTrg, pBldTrgArch, pBldTrgCpu, NULL,
2027	ST("DEFS"), ST("defs"), 1/* left-to-right */);
2028	pIncs = kbuild_collect_source_prop(pTarget, pSource, pTool, &Sdks, pType, pBldType, pBldTrg, pBldTrgArch, pBldTrgCpu, pDefPath,
2029	ST("INCS"), ST("incs"), -1/* right-to-left */);
2030	pFlags = kbuild_collect_source_prop(pTarget, pSource, pTool, &Sdks, pType, pBldType, pBldTrg, pBldTrgArch, pBldTrgCpu, NULL,
2031	ST("FLAGS"), ST("flags"), 1/* left-to-right */);
2032	pDeps = kbuild_collect_source_prop(pTarget, pSource, pTool, &Sdks, pType, pBldType, pBldTrg, pBldTrgArch, pBldTrgCpu, pDefPath,
2033	ST("DEPS"), ST("deps"), 1/* left-to-right */);
2034	pOrderDeps = kbuild_collect_source_prop(pTarget, pSource, pTool, &Sdks, pType, pBldType, pBldTrg, pBldTrgArch, pBldTrgCpu, pDefPath,
2035	ST("ORDERDEPS"), ST("orderdeps"), 1/* left-to-right */);
2036
2037	/*
2038	* If we've got a default path, we must expand the source now.
2039	* If we do this too early, "<source>_property = stuff" won't work becuase
2040	* our 'source' value isn't what the user expects.
2041	*/
2042	if (pDefPath)
2043	{
2044	/** @todo assert(pSource->origin != o_automatic); We're changing 'source'
2045	* from the foreach loop! */
2046	#ifdef CONFIG_WITH_RDONLY_VARIABLE_VALUE
2047	assert(!pSource->rdonly_val);
2048	#endif
2049	kbuild_apply_defpath(pDefPath, &pSource->value, &pSource->value_length, &pSource->value_alloc_len, 1 /* can free */);
2050	}
2051
2052	/*
2053	# dependencies
2054	ifndef NO_COMPILE_CMDS_DEPS
2055	_DEPFILES_INCLUDED += $(dep)
2056	$(if $(wildcard $(dep)),$(eval include $(dep)))
2057	endif
2058	*/
2059	if (s_fNoCompileCmdsDepsDefined == -1)
2060	s_fNoCompileCmdsDepsDefined = kbuild_lookup_variable_n(ST("NO_COMPILE_CMDS_DEPS")) != NULL;
2061	if (!s_fNoCompileCmdsDepsDefined)
2062	{
2063	pVar = kbuild_query_recursive_variable_n("_DEPFILES_INCLUDED", sizeof("_DEPFILES_INCLUDED") - 1);
2064	if (pVar)
2065	{
2066	if (pVar->recursive)
2067	pVar = kbuild_simplify_variable(pVar);
2068	append_string_to_variable(pVar, pDep->value, pDep->value_length, 1 /* append */);
2069	}
2070	else
2071	define_variable_vl_global("_DEPFILES_INCLUDED", sizeof("_DEPFILES_INCLUDED") - 1,
2072	pDep->value, pDep->value_length,
2073	1 /* duplicate_value */,
2074	o_file,
2075	0 /* recursive */,
2076	NULL /* flocp */);
2077
2078	eval_include_dep(pDep->value, NILF, iVer >= 2 ? incdep_queue : incdep_read_it);
2079	}
2080
2081	/*
2082	# call the tool
2083	$(target)_$(source)_CMDS_ := $(TOOL_$(tool)_COMPILE_$(type)_CMDS)
2084	$(target)_$(source)_OUTPUT_ := $(TOOL_$(tool)_COMPILE_$(type)_OUTPUT)
2085	$(target)_$(source)_OUTPUT_MAYBE_ := $(TOOL_$(tool)_COMPILE_$(type)_OUTPUT_MAYBE)
2086	$(target)_$(source)_DEPEND_ := $(TOOL_$(tool)_COMPILE_$(type)_DEPEND) $(deps) $(source)
2087	$(target)_$(source)_DEPORD_ := $(TOOL_$(tool)_COMPILE_$(type)_DEPORD) $(dirdep)
2088	*/
2089	/** @todo Make all these local variables, if someone needs the info later it
2090	* can be recalculated. (Ticket #80.) */
2091	cch = sizeof("TOOL_") + pTool->value_length + sizeof("_COMPILE_") + pType->value_length + sizeof("_OUTPUT_MAYBE");
2092	if (cch < pTarget->value_length + sizeof("$(_2_OBJS)"))
2093	cch = pTarget->value_length + sizeof("$(_2_OBJS)");
2094	psz = pszSrcVar = alloca(cch);
2095	memcpy(psz, "TOOL_", sizeof("TOOL_") - 1); psz += sizeof("TOOL_") - 1;
2096	memcpy(psz, pTool->value, pTool->value_length); psz += pTool->value_length;
2097	memcpy(psz, "_COMPILE_", sizeof("_COMPILE_") - 1); psz += sizeof("_COMPILE_") - 1;
2098	memcpy(psz, pType->value, pType->value_length); psz += pType->value_length;
2099	pszSrc = psz;
2100
2101	cch = pTarget->value_length + 1 + pSource->value_length + sizeof("_OUTPUT_MAYBE_");
2102	psz = pszDstVar = alloca(cch);
2103	memcpy(psz, pTarget->value, pTarget->value_length); psz += pTarget->value_length;
2104	*psz++ = '_';
2105	memcpy(psz, pSource->value, pSource->value_length); psz += pSource->value_length;
2106	pszDst = psz;
2107
2108	memcpy(pszSrc, "_CMDS", sizeof("_CMDS"));
2109	memcpy(pszDst, "_CMDS_", sizeof("_CMDS_"));
2110	pVar = kbuild_get_recursive_variable(pszSrcVar);
2111	do_variable_definition_2(NILF, pszDstVar, pVar->value, pVar->value_length,
2112	!pVar->recursive, 0, o_file, f_simple, 0 /* !target_var */);
2113
2114	memcpy(pszSrc, "_OUTPUT", sizeof("_OUTPUT"));
2115	memcpy(pszDst, "_OUTPUT_", sizeof("_OUTPUT_"));
2116	pVar = kbuild_get_recursive_variable(pszSrcVar);
2117	pOutput = do_variable_definition_2(NILF, pszDstVar, pVar->value, pVar->value_length,
2118	!pVar->recursive, 0, o_file, f_simple, 0 /* !target_var */);
2119
2120	memcpy(pszSrc, "_OUTPUT_MAYBE", sizeof("_OUTPUT_MAYBE"));
2121	memcpy(pszDst, "_OUTPUT_MAYBE_", sizeof("_OUTPUT_MAYBE_"));
2122	pVar = kbuild_query_recursive_variable(pszSrcVar);
2123	if (pVar)
2124	pOutputMaybe = do_variable_definition_2(NILF, pszDstVar, pVar->value, pVar->value_length,
2125	!pVar->recursive, 0, o_file, f_simple, 0 /* !target_var */);
2126	else
2127	pOutputMaybe = do_variable_definition_2(NILF, pszDstVar, "", 0, 1, 0, o_file, f_simple, 0 /* !target_var */);
2128
2129	memcpy(pszSrc, "_DEPEND", sizeof("_DEPEND"));
2130	memcpy(pszDst, "_DEPEND_", sizeof("_DEPEND_"));
2131	pVar = kbuild_get_recursive_variable(pszSrcVar);
2132	psz = pszVal = xmalloc(pVar->value_length + 1 + pDeps->value_length + 1 + pSource->value_length + 1);
2133	memcpy(psz, pVar->value, pVar->value_length); psz += pVar->value_length;
2134	*psz++ = ' ';
2135	memcpy(psz, pDeps->value, pDeps->value_length); psz += pDeps->value_length;
2136	*psz++ = ' ';
2137	memcpy(psz, pSource->value, pSource->value_length + 1);
2138	do_variable_definition_2(NILF, pszDstVar, pszVal, pVar->value_length + 1 + pDeps->value_length + 1 + pSource->value_length,
2139	!pVar->recursive && !pDeps->recursive && !pSource->recursive,
2140	pszVal, o_file, f_simple, 0 /* !target_var */);
2141
2142	memcpy(pszSrc, "_DEPORD", sizeof("_DEPORD"));
2143	memcpy(pszDst, "_DEPORD_", sizeof("_DEPORD_"));
2144	pVar = kbuild_get_recursive_variable(pszSrcVar);
2145	psz = pszVal = xmalloc(pVar->value_length + 1 + pDirDep->value_length + 1 + pOrderDeps->value_length + 1);
2146	memcpy(psz, pVar->value, pVar->value_length); psz += pVar->value_length;
2147	*psz++ = ' ';
2148	memcpy(psz, pDirDep->value, pDirDep->value_length); psz += pDirDep->value_length;
2149	*psz++ = ' ';
2150	memcpy(psz, pOrderDeps->value, pOrderDeps->value_length + 1);
2151	do_variable_definition_2(NILF, pszDstVar, pszVal,
2152	pVar->value_length + 1 + pDirDep->value_length + 1 + pOrderDeps->value_length,
2153	!pVar->recursive && !pDirDep->recursive && !pOrderDeps->recursive,
2154	pszVal, o_file, f_simple, 0 /* !target_var */);
2155
2156	/*
2157	_OUT_FILES += $($(target)_$(source)_OUTPUT_) $($(target)_$(source)_OUTPUT_MAYBE_)
2158	*/
2159	pVar = kbuild_get_variable_n(ST("_OUT_FILES"));
2160	append_string_to_variable(pVar, pOutput->value, pOutput->value_length, 1 /* append */);
2161	if (pOutputMaybe->value_length)
2162	append_string_to_variable(pVar, pOutputMaybe->value, pOutputMaybe->value_length, 1 /* append */);
2163
2164	/*
2165	$(target)_2_OBJS += $(obj)
2166	*/
2167	memcpy(pszDstVar + pTarget->value_length, "_2_OBJS", sizeof("_2_OBJS"));
2168	pVar = kbuild_query_recursive_variable_n(pszDstVar, pTarget->value_length + sizeof("_2_OBJS") - 1);
2169	fInstallOldVars \|= iVer <= 2 && (!pVar \|\| !pVar->value_length);
2170	if (pVar)
2171	{
2172	if (pVar->recursive)
2173	pVar = kbuild_simplify_variable(pVar);
2174	append_string_to_variable(pVar, pObj->value, pObj->value_length, 1 /* append */);
2175	}
2176	else
2177	define_variable_vl_global(pszDstVar, pTarget->value_length + sizeof("_2_OBJS") - 1,
2178	pObj->value, pObj->value_length,
2179	1 /* duplicate_value */,
2180	o_file,
2181	0 /* recursive */,
2182	NULL /* flocp */);
2183
2184	/*
2185	* Install legacy variables.
2186	*/
2187	if (fInstallOldVars)
2188	{
2189	/* $(target)_OBJS_ = $($(target)_2_OBJS)*/
2190	memcpy(pszDstVar + pTarget->value_length, "_OBJS_", sizeof("_OBJS_"));
2191
2192	pszSrcVar[0] = '$';
2193	pszSrcVar[1] = '(';
2194	memcpy(pszSrcVar + 2, pTarget->value, pTarget->value_length);
2195	psz = pszSrcVar + 2 + pTarget->value_length;
2196	memcpy(psz, "_2_OBJS)", sizeof("_2_OBJS)"));
2197
2198	define_variable_vl_global(pszDstVar, pTarget->value_length + sizeof("_OBJS_") - 1,
2199	pszSrcVar, pTarget->value_length + sizeof("$(_2_OBJS)") - 1,
2200	1 /* duplicate_value */,
2201	o_file,
2202	1 /* recursive */,
2203	NULL /* flocp */);
2204	}
2205
2206	/*
2207	$(eval $(def_target_source_rule))
2208	*/
2209	pVar = kbuild_get_recursive_variable("def_target_source_rule");
2210	pszVal = variable_expand_string_2 (o, pVar->value, pVar->value_length, &psz);
2211	assert(!((size_t)pszVal & 3));
2212
2213	install_variable_buffer(&pszSavedVarBuf, &cchSavedVarBuf);
2214	eval_buffer(pszVal, psz);
2215	restore_variable_buffer(pszSavedVarBuf, cchSavedVarBuf);
2216
2217	kbuild_put_sdks(&Sdks);
2218	(void)pszFuncName;
2219
2220	*pszVal = '\0';
2221	return pszVal;
2222	}
2223
2224	/*
2225
2226	## Inherit one template property in a non-accumulative manner.
2227	# @param $(prop) Property name
2228	# @param $(target) Target name
2229	# @todo fix the precedence order for some properties.
2230	define def_inherit_template_one
2231	ifdef TEMPLATE_$($(target)_TEMPLATE)_$(prop)
2232	ifndef $(target)_$(prop)
2233	$(target)_$(prop) := $(TEMPLATE_$($(target)_TEMPLATE)_$(prop))
2234	endif
2235	endif
2236	ifdef TEMPLATE_$($(target)_TEMPLATE)_$(prop).$(bld_trg)
2237	ifndef $(target)_$(prop).$(bld_trg)
2238	$(target)_$(prop).$(bld_trg) := $(TEMPLATE_$($(target)_TEMPLATE)_$(prop).$(bld_trg))
2239	endif
2240	endif
2241	ifdef TEMPLATE_$($(target)_TEMPLATE)_$(prop).$(bld_trg).$(bld_trg_arch)
2242	ifndef $(target)_$(prop).$(bld_trg).$(bld_trg_arch)
2243	$(target)_$(prop).$(bld_trg).$(bld_trg_arch) := $(TEMPLATE_$($(target)_TEMPLATE)_$(prop).$(bld_trg).$(bld_trg_arch))
2244	endif
2245	endif
2246	ifdef TEMPLATE_$($(target)_TEMPLATE)_$(prop).$(bld_trg_arch)
2247	ifndef $(target)_$(prop).$(bld_trg_arch)
2248	$(target)_$(prop).$(bld_trg_arch) := $(TEMPLATE_$($(target)_TEMPLATE)_$(prop).$(bld_trg_arch))
2249	endif
2250	endif
2251	ifdef TEMPLATE_$($(target)_TEMPLATE)_$(prop).$(bld_trg_cpu)
2252	ifndef $(target)_$(prop).$(bld_trg_cpu)
2253	$(target)_$(prop).$(bld_trg_cpu) := $(TEMPLATE_$($(target)_TEMPLATE)_$(prop).$(bld_trg_cpu))
2254	endif
2255	endif
2256	endef
2257
2258	## Inherit one template property in a non-accumulative manner, deferred expansion.
2259	# @param 1: $(prop) Property name
2260	# @param 2: $(target) Target name
2261	# @todo fix the precedence order for some properties.
2262	# @remark this define relies on double evaluation
2263	define def_inherit_template_one_deferred
2264	ifdef TEMPLATE_$($(target)_TEMPLATE)_$(prop)
2265	ifndef $(target)_$(prop)
2266	$(target)_$(prop) = $$(TEMPLATE_$($(target)_TEMPLATE)_$(prop))
2267	endif
2268	endif
2269	ifdef TEMPLATE_$($(target)_TEMPLATE)_$(prop).$(bld_trg)
2270	ifndef $(target)_$(prop).$(bld_trg)
2271	$(target)_$(prop).$(bld_trg) = $$(TEMPLATE_$($(target)_TEMPLATE)_$(prop).$(bld_trg))
2272	endif
2273	endif
2274	ifdef TEMPLATE_$($(target)_TEMPLATE)_$(prop).$(bld_trg).$(bld_trg_arch)
2275	ifndef $(target)_$(prop).$(bld_trg).$(bld_trg_arch)
2276	$(target)_$(prop).$(bld_trg).$(bld_trg_arch) = $$(TEMPLATE_$($(target)_TEMPLATE)_$(prop).$(bld_trg).$(bld_trg_arch))
2277	endif
2278	endif
2279	ifdef TEMPLATE_$($(target)_TEMPLATE)_$(prop).$(bld_trg_arch)
2280	ifndef $(target)_$(prop).$(bld_trg_arch)
2281	$(target)_$(prop).$(bld_trg_arch) = $$(TEMPLATE_$($(target)_TEMPLATE)_$(prop).$(bld_trg_arch))
2282	endif
2283	endif
2284	ifdef TEMPLATE_$($(target)_TEMPLATE)_$(prop).$(bld_trg_cpu)
2285	ifndef $(target)_$(prop).$(bld_trg_cpu)
2286	$(target)_$(prop).$(bld_trg_cpu) = $$(TEMPLATE_$($(target)_TEMPLATE)_$(prop).$(bld_trg_cpu))
2287	endif
2288	endif
2289	endef
2290
2291	## Inherit one acculumlative template property where the 'most significant' items are at the left end.
2292	# @param $(prop) Property name
2293	# @param $(target) Target name
2294	define def_inherit_template_one_accumulate_l
2295	ifdef TEMPLATE_$($(target)_TEMPLATE)_$(prop)
2296	ifeq ($$(flavor $(target)_$(prop)),simple)
2297	$$(evalcall2 def_simple_2_recursive,$(target)_$(prop))
2298	endif
2299	$(target)_$(prop) += $$(TEMPLATE_$($(target)_TEMPLATE)_$(prop))
2300	endif
2301	ifdef TEMPLATE_$($(target)_TEMPLATE)_$(prop).$(KBUILD_TYPE)
2302	ifeq ($$(flavor $(target)_$(prop).$(KBUILD_TYPE)),simple)
2303	$$(evalcall2 def_simple_2_recursive,$(target)_$(prop).$(KBUILD_TYPE))
2304	endif
2305	$(target)_$(prop).$(KBUILD_TYPE) += $$(TEMPLATE_$($(target)_TEMPLATE)_$(prop).$(KBUILD_TYPE))
2306	endif
2307	ifdef TEMPLATE_$($(target)_TEMPLATE)_$(prop).$(bld_trg)
2308	ifeq ($$(flavor $(target)_$(prop).$(bld_trg)),simple)
2309	$$(evalcall2 def_simple_2_recursive,$(target)_$(prop).$(bld_trg))
2310	endif
2311	$(target)_$(prop).$(bld_trg) += $$(TEMPLATE_$($(target)_TEMPLATE)_$(prop).$(bld_trg))
2312	endif
2313	ifdef TEMPLATE_$($(target)_TEMPLATE)_$(prop).$(bld_trg).$(bld_trg_arch)
2314	ifeq ($$(flavor $(target)_$(prop).$(bld_trg).$(bld_trg_arch)),simple)
2315	$$(evalcall2 def_simple_2_recursive,$(target)_$(prop).$(bld_trg).$(bld_trg_arch))
2316	endif
2317	$(target)_$(prop).$(bld_trg).$(bld_trg_arch) += $$(TEMPLATE_$($(target)_TEMPLATE)_$(prop).$(bld_trg).$(bld_trg_arch))
2318	endif
2319	ifdef TEMPLATE_$($(target)_TEMPLATE)_$(prop).$(bld_trg_cpu)
2320	ifeq ($$(flavor $(target)_$(prop).$(bld_trg_cpu)),simple)
2321	$$(evalcall2 def_simple_2_recursive,$(target)_$(prop).$(bld_trg_cpu))
2322	endif
2323	$(target)_$(prop).$(bld_trg_cpu) += $$(TEMPLATE_$($(target)_TEMPLATE)_$(prop).$(bld_trg_cpu))
2324	endif
2325	ifdef TEMPLATE_$($(target)_TEMPLATE)_$(prop).$(bld_trg_arch)
2326	ifeq ($$(flavor $(target)_$(prop).$(bld_trg_arch)),simple)
2327	$$(evalcall2 def_simple_2_recursive,$(target)_$(prop).$(bld_trg_arch))
2328	endif
2329	$(target)_$(prop).$(bld_trg_arch) += $$(TEMPLATE_$($(target)_TEMPLATE)_$(prop).$(bld_trg_arch))
2330	endif
2331	endef
2332
2333	## Inherit one acculumlative template property where the 'most significant' items are at the right end.
2334	# @param $(prop) Property name
2335	# @param $(target) Target name
2336	define def_inherit_template_one_accumulate_r
2337	ifdef TEMPLATE_$($(target)_TEMPLATE)_$(prop)
2338	ifeq ($$(flavor $(target)_$(prop)),simple)
2339	$$(evalcall2 def_simple_2_recursive,$(target)_$(prop))
2340	endif
2341	$(target)_$(prop) <=$$(TEMPLATE_$($(target)_TEMPLATE)_$(prop))
2342	endif
2343	ifdef TEMPLATE_$($(target)_TEMPLATE)_$(prop).$(KBUILD_TYPE)
2344	ifeq ($$(flavor $(target)_$(prop).$(KBUILD_TYPE)),simple)
2345	$$(evalcall2 def_simple_2_recursive,$(target)_$(prop).$(KBUILD_TYPE))
2346	endif
2347	$(target)_$(prop).$(KBUILD_TYPE) <=$$(TEMPLATE_$($(target)_TEMPLATE)_$(prop).$(KBUILD_TYPE))
2348	endif
2349	ifdef TEMPLATE_$($(target)_TEMPLATE)_$(prop).$(bld_trg)
2350	ifeq ($$(flavor $(target)_$(prop).$(bld_trg)),simple)
2351	$$(evalcall2 def_simple_2_recursive,$(target)_$(prop).$(bld_trg))
2352	endif
2353	$(target)_$(prop).$(bld_trg) <=$$(TEMPLATE_$($(target)_TEMPLATE)_$(prop).$(bld_trg))
2354	endif
2355	ifdef TEMPLATE_$($(target)_TEMPLATE)_$(prop).$(bld_trg).$(bld_trg_arch)
2356	ifeq ($$(flavor $(target)_$(prop).$(bld_trg).$(bld_trg_arch)),simple)
2357	$$(evalcall2 def_simple_2_recursive,$(target)_$(prop).$(bld_trg).$(bld_trg_arch))
2358	endif
2359	$(target)_$(prop).$(bld_trg).$(bld_trg_arch) <=$$(TEMPLATE_$($(target)_TEMPLATE)_$(prop).$(bld_trg).$(bld_trg_arch))
2360	endif
2361	ifdef TEMPLATE_$($(target)_TEMPLATE)_$(prop).$(bld_trg_cpu)
2362	ifeq ($$(flavor $(target)_$(prop).$(bld_trg_cpu)),simple)
2363	$$(evalcall2 def_simple_2_recursive,$(target)_$(prop).$(bld_trg_cpu))
2364	endif
2365	$(target)_$(prop).$(bld_trg_cpu) <=$$(TEMPLATE_$($(target)_TEMPLATE)_$(prop).$(bld_trg_cpu))
2366	endif
2367	ifdef TEMPLATE_$($(target)_TEMPLATE)_$(prop).$(bld_trg_arch)
2368	ifeq ($$(flavor $(target)_$(prop).$(bld_trg_arch)),simple)
2369	$$(evalcall2 def_simple_2_recursive,$(target)_$(prop).$(bld_trg_arch))
2370	endif
2371	$(target)_$(prop).$(bld_trg_arch) <=$$(TEMPLATE_$($(target)_TEMPLATE)_$(prop).$(bld_trg_arch))
2372	endif
2373	endef
2374
2375
2376	## Inherit template properties for on target.
2377	# @param $(target) Target name.
2378	define def_inherit_template
2379	# sanity check.
2380	ifdef _$(target)_ALREADY_PROCESSED
2381	$(error kBuild: The target $(target) appears more than once in the target lists! Please correct the makefile(s))
2382	endif
2383	_$(target)_ALREADY_PROCESSED := 1
2384
2385	# Inherit any default template.
2386	ifdef TEMPLATE
2387	ifeq ($($(target)_TEMPLATE),)
2388	$(eval $(target)_TEMPLATE:=$(TEMPLATE))
2389	endif
2390	endif
2391	# Expand the template if specified.
2392	ifneq ($($(target)_TEMPLATE),)
2393	$(foreach prop,$(PROPS_SINGLE),$(evalval def_inherit_template_one))
2394	$(foreach prop,$(PROPS_DEFERRED),$(eval $(def_inherit_template_one_deferred))) # exploits the 2 evaluation, so no value!
2395	$(foreach prop,$(PROPS_ACCUMULATE_L),$(eval $(def_inherit_template_one_accumulate_l))) # += works fine without value
2396	$(foreach prop,$(PROPS_ACCUMULATE_R),$(eval $(def_inherit_template_one_accumulate_r))) # use <= (kmk addition)
2397	endif
2398	endef
2399
2400
2401	Invoked like this:
2402	$(kb-exp-tmpl 1,$(_ALL_TARGET_TARGETS),$(KBUILD_TARGET),$(KBUILD_TARGET_ARCH),$(KBUILD_TARGET_CPU),$(KBUILD_TYPE))
2403	*/
2404	char *
2405	func_kbuild_expand_template(char o, char argv, const char pszFuncName)
2406	{
2407	const char *pszVersion = argv[0];
2408	const char *pszBldTrg = argv[2];
2409	const char *pszBldTrgArch = argv[3];
2410	const char *pszBldTrgCpu = argv[4];
2411	const char *pszBldType = argv[5];
2412	size_t cchBldTrg = strlen(pszBldTrg);
2413	size_t cchBldTrgArch = strlen(pszBldTrgArch);
2414	size_t cchBldTrgCpu = strlen(pszBldTrgCpu);
2415	size_t cchBldType = strlen(pszBldType);
2416	size_t cchMaxBld = cchBldTrg + cchBldTrgArch + cchBldTrgCpu + cchBldType; /* too big, but so what. */
2417	struct kbet_key
2418	{
2419	unsigned int cch;
2420	char *psz;
2421	} aKeys[6];
2422	unsigned int const cKeys = 6;
2423	unsigned int iKey;
2424	struct variable *pDefTemplate;
2425	struct variable *pProps;
2426	struct kbet_prop
2427	{
2428	const char *pch;
2429	unsigned int cch;
2430	enum kbet_prop_enum { kPropSingle, kPropDeferred, kPropAccumulateL, kPropAccumulateR }
2431	enmType;
2432	} *paProps;
2433	unsigned int cProps;
2434	unsigned int iProp;
2435	size_t cchMaxProp;
2436	struct variable *pVarTrg;
2437	struct variable *pVarSrc;
2438	const char *pszIter;
2439	const char *pszTarget;
2440	unsigned int cchTarget;
2441	char *pszSrc = 0;
2442	char *pszSrcRef = 0;
2443	char *pszSrcBuf = 0;
2444	size_t cchSrcBuf = 0;
2445	char *pszTrg = 0;
2446	size_t cchTrg = 0;
2447
2448	/*
2449	* Validate input.
2450	*/
2451	if (pszVersion[0] != '1' \|\| pszVersion[1])
2452	fatal(NULL, "%s: Unsupported version `%s'", pszFuncName, pszVersion);
2453
2454	if (!cchBldTrg)
2455	fatal(NULL, "%s: missing bldtrg", pszFuncName);
2456
2457	if (!cchBldTrgArch)
2458	fatal(NULL, "%s: missing bld_trg_arch", pszFuncName);
2459
2460	if (!cchBldTrgCpu)
2461	fatal(NULL, "%s: missing bld_trg_cpu", pszFuncName);
2462
2463	if (!cchBldType)
2464	fatal(NULL, "%s: missing bld_type", pszFuncName);
2465
2466	/*
2467	* Prepare the keywords, prepending dots for quicker copying.
2468	* This allows for an inner loop when processing properties, saving code
2469	* at the expense of a few xmallocs.
2470	*/
2471	/* the first entry is empty. */
2472	aKeys[0].cch = 0;
2473	aKeys[0].psz = NULL;
2474
2475	aKeys[1].cch = cchBldType + 1;
2476	aKeys[1].psz = xmalloc (aKeys[1].cch + 1);
2477	aKeys[1].psz[0] = '.';
2478	memcpy(aKeys[1].psz + 1, pszBldType, cchBldType + 1);
2479
2480	aKeys[2].cch = cchBldTrg + 1;
2481	aKeys[2].psz = xmalloc (aKeys[2].cch + 1);
2482	aKeys[2].psz[0] = '.';
2483	memcpy(aKeys[2].psz + 1, pszBldTrg, cchBldTrg + 1);
2484
2485	aKeys[3].cch = cchBldTrg + 1 + cchBldTrgArch + 1;
2486	aKeys[3].psz = xmalloc (aKeys[3].cch + 1);
2487	aKeys[3].psz[0] = '.';
2488	memcpy(aKeys[3].psz + 1, pszBldTrg, cchBldTrg);
2489	aKeys[3].psz[1 + cchBldTrg] = '.';
2490	memcpy(aKeys[3].psz + 1 + cchBldTrg + 1, pszBldTrgArch, cchBldTrgArch + 1);
2491
2492	aKeys[4].cch = cchBldTrgCpu + 1;
2493	aKeys[4].psz = xmalloc (aKeys[4].cch + 1);
2494	aKeys[4].psz[0] = '.';
2495	memcpy(aKeys[4].psz + 1, pszBldTrgCpu, cchBldTrgCpu + 1);
2496
2497	aKeys[5].cch = cchBldTrgArch + 1;
2498	aKeys[5].psz = xmalloc (aKeys[5].cch + 1);
2499	aKeys[5].psz[0] = '.';
2500	memcpy(aKeys[5].psz + 1, pszBldTrgArch, cchBldTrgArch + 1);
2501
2502
2503	/*
2504	* Prepare the properties, folding them into an array.
2505	* This way we won't have to reparse them for each an every target, though
2506	* it comes at the expense of one or more heap calls.
2507	*/
2508	#define PROP_ALLOC_INC 128
2509	iProp = 0;
2510	cProps = PROP_ALLOC_INC;
2511	paProps = xmalloc(sizeof(pProps) cProps);
2512
2513	pProps = kbuild_get_variable_n(ST("PROPS_SINGLE"));
2514	pszIter = pProps->value;
2515	while ((paProps[iProp].pch = find_next_token(&pszIter, &paProps[iProp].cch)))
2516	{
2517	paProps[iProp].enmType = kPropSingle;
2518	if (++iProp >= cProps)
2519	{
2520	cProps += PROP_ALLOC_INC;
2521	paProps = xrealloc(paProps, sizeof(paProps) cProps);
2522	}
2523
2524	}
2525
2526	pProps = kbuild_get_variable_n(ST("PROPS_DEFERRED"));
2527	pszIter = pProps->value;
2528	while ((paProps[iProp].pch = find_next_token(&pszIter, &paProps[iProp].cch)))
2529	{
2530	paProps[iProp].enmType = kPropDeferred;
2531	if (++iProp >= cProps)
2532	{
2533	cProps += PROP_ALLOC_INC;
2534	paProps = xrealloc(paProps, sizeof(paProps) cProps);
2535	}
2536	}
2537
2538	pProps = kbuild_get_variable_n(ST("PROPS_ACCUMULATE_L"));
2539	pszIter = pProps->value;
2540	while ((paProps[iProp].pch = find_next_token(&pszIter, &paProps[iProp].cch)))
2541	{
2542	paProps[iProp].enmType = kPropAccumulateL;
2543	if (++iProp >= cProps)
2544	{
2545	cProps += PROP_ALLOC_INC;
2546	paProps = xrealloc(paProps, sizeof(paProps) cProps);
2547	}
2548	}
2549
2550	pProps = kbuild_get_variable_n(ST("PROPS_ACCUMULATE_R"));
2551	pszIter = pProps->value;
2552	while ((paProps[iProp].pch = find_next_token(&pszIter, &paProps[iProp].cch)))
2553	{
2554	paProps[iProp].enmType = kPropAccumulateR;
2555	if (++iProp >= cProps)
2556	{
2557	cProps += PROP_ALLOC_INC;
2558	paProps = xrealloc(paProps, sizeof(paProps) cProps);
2559	}
2560	}
2561	#undef PROP_ALLOC_INC
2562	cProps = iProp;
2563
2564	/* find the max prop length. */
2565	cchMaxProp = paProps[0].cch;
2566	while (--iProp > 0)
2567	if (paProps[iProp].cch > cchMaxProp)
2568	cchMaxProp = paProps[iProp].cch;
2569
2570	/*
2571	* Query and prepare (strip) the default template
2572	* (given by the TEMPLATE variable).
2573	*/
2574	pDefTemplate = kbuild_lookup_variable_n(ST("TEMPLATE"));
2575	if (pDefTemplate)
2576	{
2577	if ( pDefTemplate->value_length
2578	&& ( isspace(pDefTemplate->value[0])
2579	\|\| isspace(pDefTemplate->value[pDefTemplate->value_length - 1])))
2580	{
2581	unsigned int off;
2582	if (pDefTemplate->rdonly_val)
2583	fatal(NULL, "%s: TEMPLATE is read-only", pszFuncName);
2584
2585	/* head */
2586	for (off = 0; isspace(pDefTemplate->value[off]); off++)
2587	/* nothing */;
2588	if (off)
2589	{
2590	pDefTemplate->value_length -= off;
2591	memmove(pDefTemplate->value, pDefTemplate->value + off, pDefTemplate->value_length + 1);
2592	}
2593
2594	/* tail */
2595	off = pDefTemplate->value_length;
2596	while (off > 0 && isspace(pDefTemplate->value[off - 1]))
2597	off--;
2598	pDefTemplate->value_length = off;
2599	pDefTemplate->value[off] = '\0';
2600	}
2601
2602	if (!pDefTemplate->value_length)
2603	pDefTemplate = NULL;
2604	}
2605
2606	/*
2607	* Iterate the target list.
2608	*/
2609	pszIter = argv[1];
2610	while ((pszTarget = find_next_token(&pszIter, &cchTarget)))
2611	{
2612	char pszTrgProp, pszSrcProp;
2613	char pszTrgKey, pszSrcKey;
2614	struct variable *pTmpl;
2615	const char *pszTmpl;
2616	size_t cchTmpl, cchMax;
2617
2618	/* resize the target buffer. */
2619	cchMax = cchTarget + cchMaxProp + cchMaxBld + 10;
2620	if (cchTrg < cchMax)
2621	{
2622	cchTrg = (cchMax + 31U) & ~(size_t)31;
2623	pszTrg = xrealloc(pszTrg, cchTrg);
2624	}
2625
2626	/*
2627	* Query the TEMPLATE property, if not found or zero-length fall back on the default.
2628	*/
2629	memcpy(pszTrg, pszTarget, cchTarget);
2630	pszTrgProp = pszTrg + cchTarget;
2631	memcpy(pszTrgProp, "_TEMPLATE", sizeof("_TEMPLATE"));
2632	pszTrgProp++; /* after '_'. */
2633
2634	/** @todo Change this to a recursive lookup with simplification below. That
2635	* will allow target_TEMPLATE = $(NO_SUCH_TEMPLATE) instead of having
2636	* to use target_TEMPLATE = DUMMY */
2637	pTmpl = kbuild_lookup_variable_n(pszTrg, cchTarget + sizeof("_TEMPLATE") - 1);
2638	if (!pTmpl \|\| !pTmpl->value_length)
2639	{
2640	if (!pDefTemplate)
2641	continue; /* no template */
2642	pszTmpl = pDefTemplate->value;
2643	cchTmpl = pDefTemplate->value_length;
2644	}
2645	else
2646	{
2647	pszTmpl = pTmpl->value;
2648	cchTmpl = pTmpl->value_length;
2649	while (isspace(*pszTmpl))
2650	cchTmpl--, pszTmpl++;
2651	if (!cchTmpl)
2652	continue; /* no template */
2653	}
2654
2655	/* resize the source buffer. */
2656	cchMax = sizeof("TEMPLATE_") + cchTmpl + cchMaxProp + cchMaxBld + 10 + sizeof(void *);
2657	if (cchSrcBuf < cchMax)
2658	{
2659	cchSrcBuf = (cchMax + 31U) & ~(size_t)31;
2660	pszSrcBuf = xrealloc(pszSrcBuf, cchSrcBuf);
2661	pszSrc = pszSrcBuf + sizeof(void ); assert(sizeof(void ) >= 2);
2662	pszSrcRef = pszSrc - 2;
2663	pszSrcRef[0] = '$';
2664	pszSrcRef[1] = '(';
2665	}
2666
2667	/* prepare the source buffer */
2668	memcpy(pszSrc, "TEMPLATE_", sizeof("TEMPLATE_") - 1);
2669	pszSrcProp = pszSrc + sizeof("TEMPLATE_") - 1;
2670	memcpy(pszSrcProp, pszTmpl, cchTmpl);
2671	pszSrcProp += cchTmpl;
2672	*pszSrcProp++ = '_';
2673
2674	/*
2675	* Process properties.
2676	* Note! The single and deferred are handled in the same way now.
2677	*/
2678	#define BY_REF_LIMIT 64 /(cchSrcVar 4 > 64 ? cchSrcVar * 4 : 64)*/
2679
2680	for (iProp = 0; iProp < cProps; iProp++)
2681	{
2682	memcpy(pszTrgProp, paProps[iProp].pch, paProps[iProp].cch);
2683	pszTrgKey = pszTrgProp + paProps[iProp].cch;
2684
2685	memcpy(pszSrcProp, paProps[iProp].pch, paProps[iProp].cch);
2686	pszSrcKey = pszSrcProp + paProps[iProp].cch;
2687
2688	for (iKey = 0; iKey < cKeys; iKey++)
2689	{
2690	char *pszTrgEnd;
2691	size_t cchSrcVar;
2692
2693	/* lookup source, skip ahead if it doesn't exist. */
2694	memcpy(pszSrcKey, aKeys[iKey].psz, aKeys[iKey].cch);
2695	cchSrcVar = pszSrcKey - pszSrc + aKeys[iKey].cch;
2696	pszSrc[cchSrcVar] = '\0';
2697	pVarSrc = kbuild_query_recursive_variable_n(pszSrc, cchSrcVar);
2698	if (!pVarSrc)
2699	continue;
2700
2701	/* lookup target, skip ahead if it exists. */
2702	memcpy(pszTrgKey, aKeys[iKey].psz, aKeys[iKey].cch);
2703	pszTrgEnd = pszTrgKey + aKeys[iKey].cch;
2704	*pszTrgEnd = '\0';
2705	pVarTrg = kbuild_query_recursive_variable_n(pszTrg, pszTrgEnd - pszTrg);
2706
2707	switch (paProps[iProp].enmType)
2708	{
2709	case kPropAccumulateL:
2710	case kPropAccumulateR:
2711	if (pVarTrg)
2712	{
2713	/* Append to existing variable. If the source is recursive,
2714	or we append by reference, we'll have to make sure the
2715	target is recusive as well. */
2716	if ( !pVarTrg->recursive
2717	&& ( pVarSrc->value_length >= BY_REF_LIMIT
2718	\|\| pVarSrc->recursive))
2719	pVarTrg->recursive = 1;
2720
2721	if (pVarSrc->value_length < BY_REF_LIMIT)
2722	append_string_to_variable(pVarTrg, pVarSrc->value, pVarSrc->value_length,
2723	paProps[iProp].enmType == kPropAccumulateL /* append */);
2724	else
2725	{
2726	pszSrc[cchSrcVar] = ')';
2727	pszSrc[cchSrcVar + 1] = '\0';
2728	append_string_to_variable(pVarTrg, pszSrcRef, 2 + cchSrcVar + 1,
2729	paProps[iProp].enmType == kPropAccumulateL /* append */);
2730	}
2731	break;
2732	}
2733	/* else: the target variable doesn't exist, create it. */
2734	/* fall thru */
2735
2736	case kPropSingle:
2737	case kPropDeferred:
2738	if (pVarTrg)
2739	continue; /* skip ahead if it already exists. */
2740
2741	/* copy the variable if its short, otherwise reference it. */
2742	if (pVarSrc->value_length < BY_REF_LIMIT)
2743	define_variable_vl_global(pszTrg, pszTrgEnd - pszTrg,
2744	pVarSrc->value, pVarSrc->value_length,
2745	1 /* duplicate_value */,
2746	o_file,
2747	pVarSrc->recursive,
2748	NULL /* flocp */);
2749	else
2750	{
2751	pszSrc[cchSrcVar] = ')';
2752	pszSrc[cchSrcVar + 1] = '\0';
2753	define_variable_vl_global(pszTrg, pszTrgEnd - pszTrg,
2754	pszSrcRef, 2 + cchSrcVar + 1,
2755	1 /* duplicate_value */,
2756	o_file,
2757	1 /* recursive */,
2758	NULL /* flocp */);
2759	}
2760	break;
2761
2762	}
2763
2764	} /* foreach key */
2765	} /* foreach prop */
2766	#undef BY_REF_LIMIT
2767	} /* foreach target */
2768
2769	/*
2770	* Cleanup.
2771	*/
2772	free(pszSrcBuf);
2773	free(pszTrg);
2774	free(paProps);
2775	for (iKey = 1; iKey < cKeys; iKey++)
2776	free(aKeys[iKey].psz);
2777
2778	return o;
2779	}
2780
2781	#endif /* KMK_HELPERS */
2782

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source: kBuild/branches/kBuild-0.1.5/src/kmk/kbuild.c@ 2368

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