make.h@ 1844

Last change on this file since 1844 was 1843, checked in by bird, 16 years ago
kmk/strcache: align the strings on a (somewhat) natural boundrary and offer a service for retrieving their length (which we also store now).
Property svn:eol-style set to `native`
File size: 21.9 KB

Line
1	/* Miscellaneous global declarations and portability cruft for GNU Make.
2	Copyright (C) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997,
3	1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006 Free Software
4	Foundation, Inc.
5	This file is part of GNU Make.
6
7	GNU Make is free software; you can redistribute it and/or modify it under the
8	terms of the GNU General Public License as published by the Free Software
9	Foundation; either version 2, or (at your option) any later version.
10
11	GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
12	WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
13	A PARTICULAR PURPOSE. See the GNU General Public License for more details.
14
15	You should have received a copy of the GNU General Public License along with
16	GNU Make; see the file COPYING. If not, write to the Free Software
17	Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. */
18
19	/* We use <config.h> instead of "config.h" so that a compilation
20	using -I. -I$srcdir will use ./config.h rather than $srcdir/config.h
21	(which it would do because make.h was found in $srcdir). */
22	#include <config.h>
23	#undef HAVE_CONFIG_H
24	#define HAVE_CONFIG_H 1
25
26	/* AIX requires this to be the first thing in the file. */
27	#ifndef __GNUC__
28	# if HAVE_ALLOCA_H
29	# include <alloca.h>
30	# else
31	# ifdef _AIX
32	#pragma alloca
33	# else
34	# ifndef alloca /* predefined by HP cc +Olibcalls */
35	char *alloca ();
36	# endif
37	# endif
38	# endif
39	#endif
40
41
42	/* Specify we want GNU source code. This must be defined before any
43	system headers are included. */
44
45	#define _GNU_SOURCE 1
46
47
48	#ifdef CRAY
49	/* This must happen before #include <signal.h> so
50	that the declaration therein is changed. */
51	# define signal bsdsignal
52	#endif
53
54	/* If we're compiling for the dmalloc debugger, turn off string inlining. */
55	#if defined(HAVE_DMALLOC_H) && defined(__GNUC__)
56	# define __NO_STRING_INLINES
57	#endif
58
59	#include <sys/types.h>
60	#include <sys/stat.h>
61	#include <signal.h>
62	#include <stdio.h>
63	#include <ctype.h>
64	#ifdef HAVE_SYS_TIMEB_H
65	/* SCO 3.2 "devsys 4.2" has a prototype for `ftime' in <time.h> that bombs
66	unless <sys/timeb.h> has been included first. Does every system have a
67	<sys/timeb.h>? If any does not, configure should check for it. */
68	# include <sys/timeb.h>
69	#endif
70
71	#if TIME_WITH_SYS_TIME
72	# include <sys/time.h>
73	# include <time.h>
74	#else
75	# if HAVE_SYS_TIME_H
76	# include <sys/time.h>
77	# else
78	# include <time.h>
79	# endif
80	#endif
81
82	#include <errno.h>
83
84	#ifndef errno
85	extern int errno;
86	#endif
87
88	#ifndef isblank
89	# define isblank(c) ((c) == ' ' \|\| (c) == '\t')
90	#endif
91
92	#ifdef HAVE_UNISTD_H
93	# include <unistd.h>
94	/* Ultrix's unistd.h always defines _POSIX_VERSION, but you only get
95	POSIX.1 behavior with `cc -YPOSIX', which predefines POSIX itself! */
96	# if defined (_POSIX_VERSION) && !defined (ultrix) && !defined (VMS)
97	# define POSIX 1
98	# endif
99	#endif
100
101	/* Some systems define _POSIX_VERSION but are not really POSIX.1. */
102	#if (defined (butterfly) \|\| defined (__arm) \|\| (defined (__mips) && defined (_SYSTYPE_SVR3)) \|\| (defined (sequent) && defined (i386)))
103	# undef POSIX
104	#endif
105
106	#if !defined (POSIX) && defined (_AIX) && defined (_POSIX_SOURCE)
107	# define POSIX 1
108	#endif
109
110	#ifndef RETSIGTYPE
111	# define RETSIGTYPE void
112	#endif
113
114	#ifndef sigmask
115	# define sigmask(sig) (1 << ((sig) - 1))
116	#endif
117
118	#ifndef HAVE_SA_RESTART
119	# define SA_RESTART 0
120	#endif
121
122	#ifdef HAVE_LIMITS_H
123	# include <limits.h>
124	#endif
125	#ifdef HAVE_SYS_PARAM_H
126	# include <sys/param.h>
127	#endif
128
129	#ifndef PATH_MAX
130	# ifndef POSIX
131	# define PATH_MAX MAXPATHLEN
132	# endif
133	#endif
134	#ifndef MAXPATHLEN
135	# define MAXPATHLEN 1024
136	#endif
137
138	#ifdef PATH_MAX
139	# define GET_PATH_MAX PATH_MAX
140	# define PATH_VAR(var) char var[PATH_MAX]
141	#else
142	# define NEED_GET_PATH_MAX 1
143	# define GET_PATH_MAX (get_path_max ())
144	# define PATH_VAR(var) char *var = alloca (GET_PATH_MAX)
145	unsigned int get_path_max (void);
146	#endif
147
148	#ifndef CHAR_BIT
149	# define CHAR_BIT 8
150	#endif
151
152	#if defined(KMK) \|\| defined(CONFIG_WITH_VALUE_LENGTH) \|\| defined (VARIABLE_HASH)
153	# ifdef _MSC_VER
154	# define MY_INLINE _inline static
155	# define MY_DBGBREAK __debugbreak()
156	# elif defined(__GNUC__)
157	# define MY_INLINE static __inline__
158	# if defined(__i386__) \|\| defined(__x86_64__)
159	# define MY_DBGBREAK __asm__ __volatile__ ("int3")
160	#else
161	# define MY_DBGBREAK assert(0)
162	# endif
163	# else
164	# define MY_INLINE static
165	# define MY_DBGBREAK assert(0)
166	# endif
167	# ifndef NDEBUG
168	# define MY_ASSERT_MSG(expr, printfargs) \
169	do { if (!(expr)) { printf printfargs; MY_DBGBREAK; } } while (0)
170	# else
171	# define MY_ASSERT_MSG(expr, printfargs) do { } while (0)
172	# endif
173
174	# ifdef __GNUC__
175	# define MY_PREDICT_TRUE(expr) __builtin_expect(!!(expr), 1)
176	# define MY_PREDICT_FALSE(expr) __builtin_expect(!!(expr), 0)
177	# else
178	# define MY_PREDICT_TRUE(expr) (expr)
179	# define MY_PREDICT_FALSE(expr) (expr)
180	# endif
181	#endif
182
183	#ifdef KMK
184	# include <ctype.h>
185	# if 1 /* See if this speeds things up (Windows is doing this anyway, so,
186	we might as well try be consistent in speed + features). */
187	# if 1
188	# define MY_IS_BLANK(ch) ((ch) == ' ' \|\| (ch) == '\t')
189	# define MY_IS_BLANK_OR_EOS(ch) ((ch) == ' ' \|\| (ch) == '\t' \|\| (ch) == '\0')
190	# else
191	# define MY_IS_BLANK(ch) (((ch) == ' ') \| ((ch) == '\t'))
192	# define MY_IS_BLANK_OR_EOS(ch) (((ch) == ' ') \| ((ch) == '\t') \| ((ch) == '\0'))
193	# endif
194	# undef isblank
195	# define isblank(ch) MY_IS_BLANK(ch)
196	# else
197	# define MY_IS_BLANK(ch) isblank ((unsigned char)(ch))
198	# define MY_IS_BLANK_OR_EOS(ch) (isblank ((unsigned char)(ch)) \|\| (ch) == '\0')
199	# endif
200	#endif
201
202	/* Nonzero if the integer type T is signed. */
203	#define INTEGER_TYPE_SIGNED(t) ((t) -1 < 0)
204
205	/* The minimum and maximum values for the integer type T.
206	Use ~ (t) 0, not -1, for portability to 1's complement hosts. */
207	#define INTEGER_TYPE_MINIMUM(t) \
208	(! INTEGER_TYPE_SIGNED (t) ? (t) 0 : ~ (t) 0 << (sizeof (t) * CHAR_BIT - 1))
209	#define INTEGER_TYPE_MAXIMUM(t) (~ (t) 0 - INTEGER_TYPE_MINIMUM (t))
210
211	#ifndef CHAR_MAX
212	# define CHAR_MAX INTEGER_TYPE_MAXIMUM (char)
213	#endif
214
215	#ifdef STAT_MACROS_BROKEN
216	# ifdef S_ISREG
217	# undef S_ISREG
218	# endif
219	# ifdef S_ISDIR
220	# undef S_ISDIR
221	# endif
222	#endif /* STAT_MACROS_BROKEN. */
223
224	#ifndef S_ISREG
225	# define S_ISREG(mode) (((mode) & S_IFMT) == S_IFREG)
226	#endif
227	#ifndef S_ISDIR
228	# define S_ISDIR(mode) (((mode) & S_IFMT) == S_IFDIR)
229	#endif
230
231	#ifdef VMS
232	# include <types.h>
233	# include <unixlib.h>
234	# include <unixio.h>
235	# include <perror.h>
236	/* Needed to use alloca on VMS. */
237	# include <builtins.h>
238	#endif
239
240	#ifndef __attribute__
241	/* This feature is available in gcc versions 2.5 and later. */
242	# if __GNUC__ < 2 \|\| (__GNUC__ == 2 && __GNUC_MINOR__ < 5) \|\| __STRICT_ANSI__
243	# define __attribute__(x)
244	# endif
245	/* The __-protected variants of `format' and `printf' attributes
246	are accepted by gcc versions 2.6.4 (effectively 2.7) and later. */
247	# if __GNUC__ < 2 \|\| (__GNUC__ == 2 && __GNUC_MINOR__ < 7)
248	# define __format__ format
249	# define __printf__ printf
250	# endif
251	#endif
252	#define UNUSED __attribute__ ((unused))
253
254	#if defined (STDC_HEADERS) \|\| defined (__GNU_LIBRARY__)
255	# include <stdlib.h>
256	# include <string.h>
257	# define ANSI_STRING 1
258	#else /* No standard headers. */
259	# ifdef HAVE_STRING_H
260	# include <string.h>
261	# define ANSI_STRING 1
262	# else
263	# include <strings.h>
264	# endif
265	# ifdef HAVE_MEMORY_H
266	# include <memory.h>
267	# endif
268	# ifdef HAVE_STDLIB_H
269	# include <stdlib.h>
270	# else
271	void *malloc (int);
272	void realloc (void , int);
273	void free (void *);
274
275	void abort (void) __attribute__ ((noreturn));
276	void exit (int) __attribute__ ((noreturn));
277	# endif /* HAVE_STDLIB_H. */
278
279	#endif /* Standard headers. */
280
281	/* These should be in stdlib.h. Make sure we have them. */
282	#ifndef EXIT_SUCCESS
283	# define EXIT_SUCCESS 0
284	#endif
285	#ifndef EXIT_FAILURE
286	# define EXIT_FAILURE 1
287	#endif
288
289	#ifndef ANSI_STRING
290
291	/* SCO Xenix has a buggy macro definition in <string.h>. */
292	#undef strerror
293	#if !defined(__DECC)
294	char *strerror (int errnum);
295	#endif
296
297	#endif /* !ANSI_STRING. */
298	#undef ANSI_STRING
299
300	#if HAVE_INTTYPES_H
301	# include <inttypes.h>
302	#endif
303	#define FILE_TIMESTAMP uintmax_t
304
305	#if !defined(HAVE_STRSIGNAL)
306	char *strsignal (int signum);
307	#endif
308
309	/* ISDIGIT offers the following features:
310	- Its arg may be any int or unsigned int; it need not be an unsigned char.
311	- It's guaranteed to evaluate its argument exactly once.
312	NOTE! Make relies on this behavior, don't change it!
313	- It's typically faster.
314	POSIX 1003.2-1992 section 2.5.2.1 page 50 lines 1556-1558 says that
315	only '0' through '9' are digits. Prefer ISDIGIT to isdigit() unless
316	it's important to use the locale's definition of `digit' even when the
317	host does not conform to POSIX. */
318	#define ISDIGIT(c) ((unsigned) (c) - '0' <= 9)
319
320	#ifndef iAPX286
321	# define streq(a, b) \
322	((a) == (b) \|\| \
323	((a) == (b) && (*(a) == '\0' \|\| !strcmp ((a) + 1, (b) + 1))))
324	# ifdef HAVE_CASE_INSENSITIVE_FS
325	# define strieq(a, b) \
326	((a) == (b) \
327	\|\| (tolower((unsigned char)(a)) == tolower((unsigned char)(b)) \
328	&& (*(a) == '\0' \|\| !strcasecmp ((a) + 1, (b) + 1))))
329	# else
330	# define strieq(a, b) streq(a, b)
331	# endif
332	#else
333	/* Buggy compiler can't handle this. */
334	# define streq(a, b) (strcmp ((a), (b)) == 0)
335	# define strieq(a, b) (strcmp ((a), (b)) == 0)
336	#endif
337	#define strneq(a, b, l) (strncmp ((a), (b), (l)) == 0)
338
339	#if (defined(__GNUC__) \|\| defined(ENUM_BITFIELDS)) && !defined(NO_ENUM_BITFIELDS)
340	# define ENUM_BITFIELD(bits) :bits
341	#else
342	# define ENUM_BITFIELD(bits)
343	#endif
344
345	/* Handle gettext and locales. */
346
347	#if HAVE_LOCALE_H
348	# include <locale.h>
349	#else
350	# define setlocale(category, locale)
351	#endif
352
353	#include <gettext.h>
354
355	#define _(msgid) gettext (msgid)
356	#define N_(msgid) gettext_noop (msgid)
357	#define S_(msg1,msg2,num) ngettext (msg1,msg2,num)
358
359	/* Handle other OSs. */
360	#ifndef PATH_SEPARATOR_CHAR
361	# if defined(HAVE_DOS_PATHS)
362	# define PATH_SEPARATOR_CHAR ';'
363	# elif defined(VMS)
364	# define PATH_SEPARATOR_CHAR ','
365	# else
366	# define PATH_SEPARATOR_CHAR ':'
367	# endif
368	#endif
369
370	/* This is needed for getcwd() and chdir(), on some W32 systems. */
371	#if defined(HAVE_DIRECT_H)
372	# include <direct.h>
373	#endif
374
375	#ifdef WINDOWS32
376	# include <fcntl.h>
377	# include <malloc.h>
378	# define pipe(_p) _pipe((_p), 512, O_BINARY)
379	# define kill(_pid,_sig) w32_kill((_pid),(_sig))
380
381	void sync_Path_environment (void);
382	int w32_kill (int pid, int sig); /* bird kill -> w32_kill - macro acquired () on the args. */
383	char end_of_token_w32 (const char s, char stopchar);
384	int find_and_set_default_shell (const char *token);
385
386	/* indicates whether or not we have Bourne shell */
387	extern int no_default_sh_exe;
388
389	/* is default_shell unixy? */
390	extern int unixy_shell;
391	#endif /* WINDOWS32 */
392
393	struct floc
394	{
395	const char *filenm;
396	unsigned long lineno;
397	};
398	#define NILF ((struct floc *)0)
399
400	#define STRING_SIZE_TUPLE(_s) (_s), (sizeof (_s)-1)
401
402
403
404	/* We have to have stdarg.h or varargs.h AND v*printf or doprnt to use
405	variadic versions of these functions. */
406
407	#if HAVE_STDARG_H \|\| HAVE_VARARGS_H
408	# if HAVE_VPRINTF \|\| HAVE_DOPRNT
409	# define USE_VARIADIC 1
410	# endif
411	#endif
412
413	#if HAVE_ANSI_COMPILER && USE_VARIADIC && HAVE_STDARG_H
414	void message (int prefix, const char *fmt, ...)
415	__attribute__ ((__format__ (__printf__, 2, 3)));
416	void error (const struct floc flocp, const char fmt, ...)
417	__attribute__ ((__format__ (__printf__, 2, 3)));
418	void fatal (const struct floc flocp, const char fmt, ...)
419	__attribute__ ((noreturn, __format__ (__printf__, 2, 3)));
420	#else
421	void message ();
422	void error ();
423	void fatal ();
424	#endif
425
426	void die (int) __attribute__ ((noreturn));
427	void log_working_directory (int);
428	void pfatal_with_name (const char *) __attribute__ ((noreturn));
429	void perror_with_name (const char , const char );
430	char savestring (const char , unsigned int);
431	char concat (const char , const char , const char );
432	void *xmalloc (unsigned int);
433	void xrealloc (void , unsigned int);
434	char xstrdup (const char );
435	char find_next_token (const char , unsigned int );
436	char next_token (const char );
437	char end_of_token (const char );
438	#ifndef CONFIG_WITH_VALUE_LENGTH
439	void collapse_continuations (char *);
440	#else
441	char collapse_continuations (char , unsigned int);
442	#endif
443	#ifdef CONFIG_WITH_OPTIMIZATION_HACKS /* memchr is usually compiler intrinsic, thus faster. */
444	# define lindex(s, limit, c) ((char *)memchr((s), (c), (limit) - (s)))
445	#else
446	char lindex (const char , const char *, int);
447	#endif
448	int alpha_compare (const void , const void );
449	void print_spaces (unsigned int);
450	char find_percent (char );
451	const char find_percent_cached (const char *);
452	FILE open_tmpfile (char , const char );
453
454	#ifndef NO_ARCHIVES
455	int ar_name (const char *);
456	void ar_parse_name (const char , char , char *);
457	int ar_touch (const char *);
458	time_t ar_member_date (const char *);
459
460	typedef long int (ar_member_func_t) (int desc, const char mem, int truncated,
461	long int hdrpos, long int datapos,
462	long int size, long int date, int uid,
463	int gid, int mode, const void *arg);
464
465	long int ar_scan (const char archive, ar_member_func_t function, const void arg);
466	int ar_name_equal (const char name, const char mem, int truncated);
467	#ifndef VMS
468	int ar_member_touch (const char arname, const char memname);
469	#endif
470	#endif
471
472	int dir_file_exists_p (const char , const char );
473	int file_exists_p (const char *);
474	int file_impossible_p (const char *);
475	void file_impossible (const char *);
476	const char dir_name (const char );
477	void hash_init_directories (void);
478
479	void define_default_variables (void);
480	void set_default_suffixes (void);
481	void install_default_suffix_rules (void);
482	void install_default_implicit_rules (void);
483
484	void build_vpath_lists (void);
485	void construct_vpath_list (char pattern, char dirpath);
486	const char vpath_search (const char file, FILE_TIMESTAMP *mtime_ptr);
487	int gpath_search (const char *file, unsigned int len);
488
489	void construct_include_path (const char **arg_dirs);
490
491	void user_access (void);
492	void make_access (void);
493	void child_access (void);
494
495	void close_stdout (void);
496
497	char strip_whitespace (const char begpp, const char *endpp);
498
499	/* String caching */
500	void strcache_init (void);
501	void strcache_print_stats (const char *prefix);
502	int strcache_iscached (const char *str);
503	const char strcache_add (const char str);
504	const char strcache_add_len (const char str, int len);
505	int strcache_setbufsize (int size);
506	#ifdef CONFIG_WITH_VALUE_LENGTH
507	MY_INLINE unsigned int strcache_get_len (const char *str)
508	{
509	unsigned int len = ((unsigned int *)str)[-1];
510	MY_ASSERT_MSG (strcache_iscached (str), ("\n"));
511	MY_ASSERT_MSG (strlen (str) == len, ("\n"));
512	return len;
513	}
514	#endif
515
516	#ifdef HAVE_VFORK_H
517	# include <vfork.h>
518	#endif
519
520	/* We omit these declarations on non-POSIX systems which define _POSIX_VERSION,
521	because such systems often declare them in header files anyway. */
522
523	#if !defined (__GNU_LIBRARY__) && !defined (POSIX) && !defined (_POSIX_VERSION) && !defined(WINDOWS32)
524
525	long int atol ();
526	# ifndef VMS
527	long int lseek ();
528	# endif
529
530	#endif /* Not GNU C library or POSIX. */
531
532	#ifdef HAVE_GETCWD
533	# if !defined(VMS) && !defined(__DECC) && !defined(_MSC_VER) /* bird: MSC */
534	char *getcwd ();
535	# endif
536	#else
537	char *getwd ();
538	# define getcwd(buf, len) getwd (buf)
539	#endif
540
541	#if !HAVE_STRCASECMP
542	# if HAVE_STRICMP
543	# define strcasecmp stricmp
544	# elif HAVE_STRCMPI
545	# define strcasecmp strcmpi
546	# else
547	/* Create our own, in misc.c */
548	int strcasecmp (const char s1, const char s2);
549	# endif
550	#endif
551
552	extern const struct floc *reading_file;
553	extern const struct floc **expanding_var;
554
555	#if !defined(_MSC_VER) /* bird */
556	extern char **environ;
557	#endif
558
559	extern int just_print_flag, silent_flag, ignore_errors_flag, keep_going_flag;
560	extern int print_data_base_flag, question_flag, touch_flag, always_make_flag;
561	extern int env_overrides, no_builtin_rules_flag, no_builtin_variables_flag;
562	extern int print_version_flag, print_directory_flag, check_symlink_flag;
563	extern int warn_undefined_variables_flag, posix_pedantic, not_parallel;
564	extern int second_expansion, clock_skew_detected, rebuilding_makefiles;
565	#ifdef CONFIG_WITH_2ND_TARGET_EXPANSION
566	extern int second_target_expansion;
567	#endif
568	#ifdef CONFIG_PRETTY_COMMAND_PRINTING
569	extern int pretty_command_printing;
570	#endif
571	#ifdef CONFIG_WITH_MAKE_STATS
572	extern int make_expensive_statistics;
573	#endif
574
575
576	/* can we run commands via 'sh -c xxx' or must we use batch files? */
577	extern int batch_mode_shell;
578
579	extern char cmd_prefix;
580
581	extern unsigned int job_slots;
582	extern int job_fds[2];
583	extern int job_rfd;
584	#ifndef NO_FLOAT
585	extern double max_load_average;
586	#else
587	extern int max_load_average;
588	#endif
589
590	extern char *program;
591	extern char *starting_directory;
592	extern unsigned int makelevel;
593	extern char version_string, remote_description, *make_host;
594
595	extern unsigned int commands_started;
596
597	extern int handling_fatal_signal;
598
599
600	#ifndef MIN
601	#define MIN(_a,_b) ((_a)<(_b)?(_a):(_b))
602	#endif
603	#ifndef MAX
604	#define MAX(_a,_b) ((_a)>(_b)?(_a):(_b))
605	#endif
606
607	#ifdef VMS
608	# define MAKE_SUCCESS 1
609	# define MAKE_TROUBLE 2
610	# define MAKE_FAILURE 3
611	#else
612	# define MAKE_SUCCESS 0
613	# define MAKE_TROUBLE 1
614	# define MAKE_FAILURE 2
615	#endif
616
617	/* Set up heap debugging library dmalloc. */
618
619	#ifdef HAVE_DMALLOC_H
620	#include <dmalloc.h>
621	#endif
622
623	#ifndef initialize_main
624	# ifdef __EMX__
625	# define initialize_main(pargc, pargv) \
626	{ _wildcard(pargc, pargv); _response(pargc, pargv); }
627	# else
628	# define initialize_main(pargc, pargv)
629	# endif
630	#endif
631
632	#ifdef __EMX__
633	# if !defined chdir
634	# define chdir _chdir2
635	# endif
636	# if !defined getcwd
637	# define getcwd _getcwd2
638	# endif
639
640	/* NO_CHDIR2 causes make not to use _chdir2() and _getcwd2() instead of
641	chdir() and getcwd(). This avoids some error messages for the
642	make testsuite but restricts the drive letter support. */
643	# ifdef NO_CHDIR2
644	# warning NO_CHDIR2: usage of drive letters restricted
645	# undef chdir
646	# undef getcwd
647	# endif
648	#endif
649
650	#ifndef initialize_main
651	# define initialize_main(pargc, pargv)
652	#endif
653
654
655	/* Some systems (like Solaris, PTX, etc.) do not support the SA_RESTART flag
656	properly according to POSIX. So, we try to wrap common system calls with
657	checks for EINTR. Note that there are still plenty of system calls that
658	can fail with EINTR but this, reportedly, gets the vast majority of
659	failure cases. If you still experience failures you'll need to either get
660	a system where SA_RESTART works, or you need to avoid -j. */
661
662	#define EINTRLOOP(_v,_c) while (((_v)=_c)==-1 && errno==EINTR)
663
664	/* While system calls that return integers are pretty consistent about
665	returning -1 on failure and setting errno in that case, functions that
666	return pointers are not always so well behaved. Sometimes they return
667	NULL for expected behavior: one good example is readdir() which returns
668	NULL at the end of the directory--and _doesn't_ reset errno. So, we have
669	to do it ourselves here. */
670
671	#define ENULLLOOP(_v,_c) do { errno = 0; (_v) = _c; } \
672	while((_v)==0 && errno==EINTR)
673
674
675	#if defined(__EMX__) && defined(CONFIG_WITH_OPTIMIZATION_HACKS) /* bird: saves 40-100ms on libc. */
676	static inline void __my_rawmemchr (const void __s, int __c);
677	#undef strchr
678	#define strchr(s, c) \
679	(__extension__ (__builtin_constant_p (c) \
680	? ((c) == '\0' \
681	? (char *) __my_rawmemchr ((s), (c)) \
682	: __my_strchr_c ((s), ((c) & 0xff) << 8)) \
683	: __my_strchr_g ((s), (c))))
684	static inline char __my_strchr_c (const char __s, int __c)
685	{
686	register unsigned long int __d0;
687	register char *__res;
688	__asm__ __volatile__
689	("1:\n\t"
690	"movb (%0),%%al\n\t"
691	"cmpb %%ah,%%al\n\t"
692	"je 2f\n\t"
693	"leal 1(%0),%0\n\t"
694	"testb %%al,%%al\n\t"
695	"jne 1b\n\t"
696	"xorl %0,%0\n"
697	"2:"
698	: "=r" (__res), "=&a" (__d0)
699	: "0" (__s), "1" (__c),
700	"m" ( (struct { char __x[0xfffffff]; } )__s)
701	: "cc");
702	return __res;
703	}
704
705	static inline char __my_strchr_g (__const char __s, int __c)
706	{
707	register unsigned long int __d0;
708	register char *__res;
709	__asm__ __volatile__
710	("movb %%al,%%ah\n"
711	"1:\n\t"
712	"movb (%0),%%al\n\t"
713	"cmpb %%ah,%%al\n\t"
714	"je 2f\n\t"
715	"leal 1(%0),%0\n\t"
716	"testb %%al,%%al\n\t"
717	"jne 1b\n\t"
718	"xorl %0,%0\n"
719	"2:"
720	: "=r" (__res), "=&a" (__d0)
721	: "0" (__s), "1" (__c),
722	"m" ( (struct { char __x[0xfffffff]; } )__s)
723	: "cc");
724	return __res;
725	}
726
727	static inline void __my_rawmemchr (const void __s, int __c)
728	{
729	register unsigned long int __d0;
730	register unsigned char *__res;
731	__asm__ __volatile__
732	("cld\n\t"
733	"repne; scasb\n\t"
734	: "=D" (__res), "=&c" (__d0)
735	: "a" (__c), "0" (__s), "1" (0xffffffff),
736	"m" ( (struct { char __x[0xfffffff]; } )__s)
737	: "cc");
738	return __res - 1;
739	}
740
741	#undef memchr
742	#define memchr(a,b,c) __my_memchr((a),(b),(c))
743	static inline void __my_memchr (__const void __s, int __c, size_t __n)
744	{
745	register unsigned long int __d0;
746	register unsigned char *__res;
747	if (__n == 0)
748	return NULL;
749	__asm__ __volatile__
750	("repne; scasb\n\t"
751	"je 1f\n\t"
752	"movl $1,%0\n"
753	"1:"
754	: "=D" (__res), "=&c" (__d0)
755	: "a" (__c), "0" (__s), "1" (__n),
756	"m" ( (struct { __extension__ char __x[__n]; } )__s)
757	: "cc");
758	return __res - 1;
759	}
760
761	#endif /* __EMX__ (bird) */
762
763	#ifdef CONFIG_WITH_MAKE_STATS
764	extern long make_stats_allocations;
765	extern unsigned long make_stats_allocated;
766	extern unsigned long make_stats_allocated_sum;
767	extern unsigned long make_stats_ht_lookups;
768	extern unsigned long make_stats_ht_collisions;
769
770	# ifdef __APPLE__
771	# include <malloc/malloc.h>
772	# define SIZE_OF_HEAP_BLOCK(ptr) malloc_size(ptr)
773
774	# elif defined(__linux__) /* glibc */
775	# include <malloc.h>
776	# define SIZE_OF_HEAP_BLOCK(ptr) malloc_usable_size(ptr)
777
778	# elif defined(_MSC_VER) \|\| defined(__OS2__)
779	# define SIZE_OF_HEAP_BLOCK(ptr) _msize(ptr)
780
781	# else
782	# include <stdlib.h>
783	# define SIZE_OF_HEAP_BLOCK(ptr) 0
784	#endif
785
786	# if defined(CONFIG_WITH_MAKE_STATS) && !defined(ELECTRIC_HEAP)
787	# define free xfree
788	extern void xfree (void *);
789	# endif
790
791	#endif
792
793	#ifdef CONFIG_WITH_IF_CONDITIONALS
794	extern int expr_eval_if_conditionals(char line, const struct floc flocp);
795	extern char expr_eval_to_string(char o, char *expr);
796	#endif
797
798	#ifdef KMK
799	extern char abspath(const char name, char *apath);
800	extern char func_breakpoint(char o, char *argv, const char funcname);
801	#endif

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source: kBuild/trunk/src/kmk/make.h@ 1844

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