src/png/scripts/pnglibconf.mak

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