| 1 | #!/usr/bin/make -f
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| 2 | # pnglibconf.mak - standard make lines for pnglibconf.h
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| 3 | #
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| 4 | # These lines are copied from Makefile.am, they illustrate
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| 5 | # how to automate the build of pnglibconf.h from scripts/pnglibconf.dfa
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| 6 | # given just 'awk', a C preprocessor and standard command line utilities
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| 7 |
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| 8 | # Override as appropriate, these definitions can be overridden on
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| 9 | # the make command line (AWK='nawk' for example).
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| 10 | AWK = gawk
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| 11 | AWK = mawk
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| 12 | AWK = nawk
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| 13 | AWK = one-true-awk
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| 14 | AWK = awk # This fails on SunOS 5.10; use 'nawk'
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| 15 | CPP = $(CC) -E # If this fails on SunOS 5.10, use '/lib/cpp'
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| 16 |
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| 17 | MOVE = mv -f
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| 18 | DELETE = rm -f
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| 19 |
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| 20 | DFA_XTRA = # Put your configuration file here, see scripts/pnglibconf.dfa. Eg:
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| 21 | # DFA_XTRA = pngusr.dfa
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| 22 |
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| 23 | # CPPFLAGS should contain the options to control the result,
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| 24 | # but DEFS and CFLAGS are also supported here, override
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| 25 | # as appropriate
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| 26 | DFNFLAGS = $(DEFS) $(CPPFLAGS) $(CFLAGS)
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| 27 |
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| 28 | # srcdir is a de-facto standard for the location of the source
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| 29 | srcdir = .
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| 30 |
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| 31 | # The standard pnglibconf.h exists as scripts/pnglibconf.h.prebuilt,
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| 32 | # copy this if the following doesn't work.
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| 33 | pnglibconf.h: pnglibconf.dfn
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| 34 | $(DELETE) $@ pnglibconf.c pnglibconf.out pnglibconf.tmp
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| 35 | echo '#include "pnglibconf.dfn"' >pnglibconf.c
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| 36 | @echo "## If '$(CC) -E' fails, try /lib/cpp (e.g. CPP='/lib/cpp')" >&2
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| 37 | $(CPP) $(DFNFLAGS) pnglibconf.c >pnglibconf.out
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| 38 | $(AWK) -f $(srcdir)/scripts/dfn.awk out=pnglibconf.tmp pnglibconf.out >&2
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| 39 | $(MOVE) pnglibconf.tmp $@
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| 40 |
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| 41 | pnglibconf.dfn: $(srcdir)/scripts/pnglibconf.dfa $(srcdir)/scripts/options.awk $(srcdir)/pngconf.h $(srcdir)/pngusr.dfa $(DFA_XTRA)
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| 42 | $(DELETE) $@ pnglibconf.pre pnglibconf.tmp
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| 43 | @echo "## Calling $(AWK) from scripts/pnglibconf.mak" >&2
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| 44 | @echo "## If 'awk' fails, try a better awk (e.g. AWK='nawk')" >&2
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| 45 | $(AWK) -f $(srcdir)/scripts/options.awk out=pnglibconf.pre\
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| 46 | version=search $(srcdir)/pngconf.h $(srcdir)/scripts/pnglibconf.dfa\
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| 47 | $(srcdir)/pngusr.dfa $(DFA_XTRA) >&2
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| 48 | $(AWK) -f $(srcdir)/scripts/options.awk out=pnglibconf.tmp pnglibconf.pre >&2
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| 49 | $(MOVE) pnglibconf.tmp $@
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| 50 |
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| 51 | clean-pnglibconf:
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| 52 | $(DELETE) pnglibconf.h pnglibconf.c pnglibconf.out pnglibconf.pre \
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| 53 | pnglibconf.dfn
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| 54 |
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| 55 | clean: clean-pnglibconf
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