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- #!/usr/bin/make -f
- # pnglibconf.mak - standard make lines for pnglibconf.h
- #
- # These lines are copied from Makefile.am, they illustrate
- # how to automate the build of pnglibconf.h from scripts/pnglibconf.dfa
- # given just 'awk', a C preprocessor and standard command line utilities
- # Override as appropriate, these definitions can be overridden on
- # the make command line (AWK='nawk' for example).
- AWK = gawk
- AWK = mawk
- AWK = nawk
- AWK = one-true-awk
- AWK = awk # Crashes on SunOS 5.10 - use 'nawk'
- CPP = $(CC) -E # On SUN OS 5.10 if this causes problems use /lib/cpp
- MOVE = mv
- DELETE = rm -f
- ECHO = echo
- DFA_XTRA = # Put your configuration file here, see scripts/pnglibconf.dfa. Eg:
- # DFA_XTRA = pngusr.dfa
- # CPPFLAGS should contain the options to control the result,
- # but DEFS and CFLAGS are also supported here, override
- # as appropriate
- DFNFLAGS = $(DEFS) $(CPPFLAGS) $(CFLAGS)
- # srcdir is a defacto standard for the location of the source
- srcdir = .
- # The standard pnglibconf.h exists as scripts/pnglibconf.h.prebuilt,
- # copy this if the following doesn't work.
- pnglibconf.h: pnglibconf.dfn
- $(DELETE) $@ pnglibconf.c pnglibconf.out pnglibconf.tmp
- $(ECHO) '#include "pnglibconf.dfn"' >pnglibconf.c
- $(ECHO) "If '$(CC) -E' crashes try /lib/cpp (e.g. CPP='/lib/cpp')" >&2
- $(CPP) $(DFNFLAGS) pnglibconf.c >pnglibconf.out
- $(AWK) -f "$(srcdir)/scripts/dfn.awk" out="pnglibconf.tmp" pnglibconf.out 1>&2
- $(MOVE) pnglibconf.tmp $@
- pnglibconf.dfn: $(srcdir)/scripts/pnglibconf.dfa $(srcdir)/scripts/options.awk $(srcdir)/pngconf.h $(srcdir)/pngusr.dfa $(DFA_XTRA)
- $(DELETE) $@ pnglibconf.pre pnglibconf.tmp
- $(ECHO) "Calling $(AWK) from scripts/pnglibconf.mak" >&2
- $(ECHO) "If 'awk' crashes try a better awk (e.g. AWK='nawk')" >&2
- $(AWK) -f $(srcdir)/scripts/options.awk out="pnglibconf.pre"\
- version=search $(srcdir)/pngconf.h $(srcdir)/scripts/pnglibconf.dfa\
- $(srcdir)/pngusr.dfa $(DFA_XTRA) 1>&2
- $(AWK) -f $(srcdir)/scripts/options.awk out="pnglibconf.tmp" pnglibconf.pre 1>&2
- $(MOVE) pnglibconf.tmp $@
- clean-pnglibconf:
- $(DELETE) pnglibconf.*
- clean: clean-pnglibconf
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