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configure.in：Code Content

							dnl Autoconfigure input file for gif2png
dnl Eric S. Raymond <esr@thyrsus.com>
dnl
dnl Process this file with autoconf to produce a configure script.
dnl
AC_INIT(gif2png.h)		dnl A distinctive file to look for in srcdir. 
AM_INIT_AUTOMAKE(gif2png, 2.3.2)
AM_CONFIG_HEADER(config.h)
AC_PROG_CC
AC_PROG_INSTALL
AC_PROG_CPP			dnl Later checks need this.
AC_PROG_CC_C_O
AC_HEADER_STDC
AC_ARG_PROGRAM
AC_ARG_WITH(png,[  --with-png=DIR             location of png lib/inc],
		[LDFLAGS="${LDFLAGS} -L${withval}"
		CFLAGS="${CFLAGS} -I${withval}"])
  
AC_ARG_WITH(png-lib,[  --with-png-lib=DIR         location of png library],
		[LDFLAGS="${LDFLAGS} -L${withval}"])
                
AC_ARG_WITH(png-inc,[  --with-png-inc=DIR         location of the libpng include files],
                [CFLAGS="${CFLAGS} -I${withval}"])
###	use option --enable-TMPFILE to set TMPFILE mode
AC_ARG_ENABLE(TMPFILE,
	[  --enable-TMPFILE           compile in TMPFILE support],
	[with_TMPFILE=$enableval],
	[with_TMPFILE=no])
test "$with_TMPFILE" = "yes" && AC_DEFINE(TMPFILE_ENABLE)
AC_CHECK_LIB(z, deflate)
AC_CHECK_LIB(m, pow)
AC_CHECK_LIB(png, png_write_init, , , $LIBS)
if test "$ac_cv_lib_png_png_write_init" = "no"
then
    AC_ERROR([PNG library is missing! Please get it.])
fi
if test "$ac_cv_lib_z_deflate" = "no"
then
    AC_ERROR([ZLIB library is missing! Please get it.])
fi
AC_OUTPUT(Makefile gif2png.spec)
dnl Local Variables:
dnl comment-start: "dnl "
dnl comment-end: ""
dnl comment-start-skip: "\bdnl\b\s *"
dnl compile-command: "make configure config.h.in"
dnl End:

						