# This file is part of dvisvgm
# Copyright (C) 2005-2007 Martin Gieseking <martin.gieseking@uos.de>
#
# Process this file with autoconf to produce a configure script.
# $Id: configure.ac 33 2007-03-08 14:47:04Z mgieseki $

AC_PREREQ(2.59)
AC_INIT([dvisvgm],[0.5],[martin.gieseking@uos.de])
DATE="March 2007"
AC_REVISION($Revision: 25 $)
AC_CONFIG_SRCDIR(src)
AC_CONFIG_HEADER(config.h)
AM_INIT_AUTOMAKE

# Checks for programs.
AC_PROG_CXX
AC_PROG_CC

AC_PROG_RANLIB

# Check whether MikTeX import libraries should be linked
AC_CANONICAL_HOST
case $host in 
	*-mingw32* | *-windows*)
		CPPFLAGS="$CPPFLAGS -DMIKTEX"
		EXTRA_LIBS="miktex-core.a miktex-kps.a"
	;;
	*)
		AC_CHECK_LIB(kpathsea, kpse_find_file)
	;;
esac

# Check for libraries.
AC_CHECK_LIB(freetype, FT_Init_FreeType)
AC_CHECK_LIB(m, sqrt) # required to pass potrace check
#AC_CHECK_LIB(potrace, potrace_trace)
AC_CHECK_LIB(z, gzopen)
AC_CHECK_FUNC(getopt_long, , EXTRA_OBJS="$EXTRA_OBJS getopt.o getopt1.o")

# Check for header files.
AC_HEADER_DIRENT
AC_HEADER_STDC
AC_CHECK_HEADERS([libintl.h stdlib.h string.h strings.h unistd.h])

# Check for typedefs, structures, and compiler characteristics.
AC_HEADER_STDBOOL
AC_C_CONST
AC_C_INLINE
AC_TYPE_SIZE_T
AC_STRUCT_TM

# Check for library functions.
AC_FUNC_CLOSEDIR_VOID
AC_FUNC_ERROR_AT_LINE
AC_FUNC_MALLOC
AC_FUNC_STAT
AC_FUNC_VPRINTF
AC_CHECK_FUNCS([memset strcasecmp strtol])

# add options for selection of "optional" library locations
# currently these libraries are mandatory; the --with-foo options
# are used to specify the locations explicitely
AC_ARG_WITH(freetype,[  --with-freetype=DIR     location of the FreeType2 library],
	[if test "$withval" != no; then
		if test "$withval" != yes; then
			FREETYPE_DIR=$withval
		fi
	 fi])
#AC_ARG_WITH(potrace,[  --with-potrace=DIR      location of the potrace library],
#	[if test "$withval" != no; then
#		if test "$withval" != yes; then
#			POTRACE_DIR=$withval
#		fi
#	fi])
AC_ARG_WITH(zlib,[  --with-zlib=DIR         location of the zlib library],
	[if test "$withval" != no; then
		if test "$withval" != yes; then
			ZLIB_DIR=$withval
		fi
	fi])


if test "$withval" != no; then
	if test -n "$FREETYPE_DIR"; then
		AC_PATH_PROG(FREETYPE_CONFIG, freetype-config,,[$FREETYPE_DIR/bin:$PATH])
	else
		AC_PATH_PROG(FREETYPE_CONFIG, freetype-config)
	fi
	
	if test -n "$FREETYPE_CONFIG"; then
		CPPFLAGS=`$FREETYPE_CONFIG --cflags`
		if test -n "$FREETYPE_DIR"; then
			CPPFLAGS="$CPPFLAGS -I$FREETYPE_DIR/include"
		fi
	else 
		if test -n "$FREETYPE_DIR"; then
	   	CPPFLAGS="$CPPFLAGS -I$FREETYPE_DIR/include/freetype2 -I$FREETYPE_DIR/include"
			LDFLAGS="$LDFLAGS -L$FREETYPE_DIR/lib"
		fi
	fi

	if test -n "$POTRACE_DIR"; then
		CPPFLAGS="$CPPFLAGS -I$POTRACE_DIR -I$POTRACE_DIR/include"
		LDFLAGS="$LDFLAGS -L$POTRACE_DIR/lib"
	fi

	if test -n "$ZLIB_DIR"; then
		CPPFLAGS="$CPPFLAGS -I$ZLIB_DIR -I$ZLIB_DIR/include"
		LDFLAGS="$LDFLAGS -L$ZLIB_DIR/lib"
	fi
fi

# Check freetype version
#AC_MSG_CHECKING([for freetype version >= 2.1.1])
#AC_RUN_IFELSE(
#	[AC_LANG_PROGRAM(
#		[[#include <ft2build.h>]]
#		[[return FREETYPE_MAJOR*10000+FREETYPE_MINOR*100+FREETYPE_PATCH >= 20101;]])],
#		AC_MSG_RESULT([yes]), 
#		AC_MSG_RESULT([no]) 
#		CPPFLAGS="$CPPFLAGS -DOLDFREETYPE")
#		AC_MSG_ERROR([dvisvgm needs freetype version >= 2.1.1]))


AC_SUBST(DATE EXTRA_LIBS)
AC_CONFIG_FILES([Makefile potracelib/Makefile src/Makefile doc/dvisvgm.1 doc/Makefile rpm/dvisvgm.spec rpm/Makefile])
AC_OUTPUT