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dnl Process this file with autoconf to produce a configure script.
dnl
dnl Copyright (C) 2009 Peter Breitenlohner <tex-live@tug.org>
dnl
dnl This file is free software; the copyright holder
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.
dnl
m4_define([libpng_major], [1])[]dnl
m4_define([libpng_minor], [2])[]dnl
m4_define([libpng_micro], [40])[]dnl using unmodified libpng source tree
m4_define([libpng_version], libpng_major.libpng_minor.libpng_micro)[]dnl
AC_INIT([libpng for TeX Live], libpng_version, [tex-k@tug.org])
AC_PREREQ([2.63])
AC_CONFIG_SRCDIR([libpng-]libpng_version)
AC_CONFIG_AUX_DIR([../../build-aux])
AC_CONFIG_MACRO_DIR([../../m4])
AM_INIT_AUTOMAKE([foreign])
AM_MAINTAINER_MODE
PNGLIB_MAJOR=libpng_major()
PNGLIB_MINOR=libpng_minor()
PNGLIB_RELEASE=libpng_micro()
AC_SUBST([PNGLIB_MAJOR])
AC_SUBST([PNGLIB_MINOR])
AC_SUBST([PNGLIB_RELEASE])
AC_PROG_CC
AC_PROG_RANLIB
KPSE_COMPILER_WARNINGS
AC_CONFIG_HEADERS([config.h])
# Checks for header files.
AC_HEADER_STDC
AC_CHECK_HEADERS([malloc.h stdlib.h string.h strings.h])
# Checks for typedefs, structures, and compiler characteristics.
AC_C_CONST
AC_TYPE_SIZE_T
AC_STRUCT_TM
# Checks for library functions.
AC_FUNC_STRTOD
AC_CHECK_FUNCS([memset], , [AC_ERROR([memset not found in libc])])
AC_SEARCH_LIBS([pow], [m], , [AC_ERROR([cannot find pow])])
KPSE_ZLIB_FLAGS
AM_CONDITIONAL([build], [test "x$enable_build" != xno])
if test "x$enable_build" != xno || test -f config.force; then
KPSE_ADD_FLAGS([zlib])
AC_CHECK_FUNC([zlibVersion], , [AC_ERROR([zlib not found])])
KPSE_RESTORE_FLAGS
echo timestamp >config.force
fi
LIBPNG_TREE=libpng-[]libpng_version
AC_SUBST([LIBPNG_TREE])
LIBPNG_DEFINES='-DPNG_CONFIGURE_LIBPNG -DPNG_NO_MMX_CODE'
AC_SUBST([LIBPNG_DEFINES])
dnl Use $LIBPNG_TREE to exclude $LIBPNG_TREE/png.h from DIST_COMMON
AC_CONFIG_LINKS([png.h:$LIBPNG_TREE/png.h pngconf.h:$LIBPNG_TREE/pngconf.h])
AC_CONFIG_FILES([Makefile])
AC_OUTPUT
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