56 lines
2.1 KiB
Makefile
56 lines
2.1 KiB
Makefile
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#!/usr/bin/make -f
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# pnglibconf.mak - standard make lines for pnglibconf.h
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#
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# These lines are copied from Makefile.am, they illustrate
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# how to automate the build of pnglibconf.h from scripts/pnglibconf.dfa
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# given just 'awk', a C preprocessor and standard command line utilities
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# Override as appropriate, these definitions can be overridden on
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# the make command line (AWK='nawk' for example).
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AWK = gawk
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AWK = mawk
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AWK = nawk
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AWK = one-true-awk
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AWK = awk # This fails on SunOS 5.10; use 'nawk'
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CPP = $(CC) -E # If this fails on SunOS 5.10, use '/lib/cpp'
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MOVE = mv -f
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DELETE = rm -f
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DFA_XTRA = # Put your configuration file here, see scripts/pnglibconf.dfa. Eg:
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# DFA_XTRA = pngusr.dfa
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# CPPFLAGS should contain the options to control the result,
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# but DEFS and CFLAGS are also supported here, override
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# as appropriate
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DFNFLAGS = $(DEFS) $(CPPFLAGS) $(CFLAGS)
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# srcdir is a de-facto standard for the location of the source
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srcdir = .
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# The standard pnglibconf.h exists as scripts/pnglibconf.h.prebuilt,
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# copy this if the following doesn't work.
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pnglibconf.h: pnglibconf.dfn
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$(DELETE) $@ pnglibconf.c pnglibconf.out pnglibconf.tmp
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echo '#include "pnglibconf.dfn"' >pnglibconf.c
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@echo "## If '$(CC) -E' fails, try /lib/cpp (e.g. CPP='/lib/cpp')" >&2
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$(CPP) $(DFNFLAGS) pnglibconf.c >pnglibconf.out
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$(AWK) -f $(srcdir)/scripts/dfn.awk out=pnglibconf.tmp pnglibconf.out >&2
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$(MOVE) pnglibconf.tmp $@
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pnglibconf.dfn: $(srcdir)/scripts/pnglibconf.dfa $(srcdir)/scripts/options.awk $(srcdir)/pngconf.h $(srcdir)/pngusr.dfa $(DFA_XTRA)
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$(DELETE) $@ pnglibconf.pre pnglibconf.tmp
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@echo "## Calling $(AWK) from scripts/pnglibconf.mak" >&2
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@echo "## If 'awk' fails, try a better awk (e.g. AWK='nawk')" >&2
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$(AWK) -f $(srcdir)/scripts/options.awk out=pnglibconf.pre\
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version=search $(srcdir)/pngconf.h $(srcdir)/scripts/pnglibconf.dfa\
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$(srcdir)/pngusr.dfa $(DFA_XTRA) >&2
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$(AWK) -f $(srcdir)/scripts/options.awk out=pnglibconf.tmp pnglibconf.pre >&2
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$(MOVE) pnglibconf.tmp $@
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clean-pnglibconf:
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$(DELETE) pnglibconf.h pnglibconf.c pnglibconf.out pnglibconf.pre \
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pnglibconf.dfn
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clean: clean-pnglibconf
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