#
# Script for autoconf 2.61 or later
#

# Initialize
AC_INIT([xfe], [1.37])
AC_CONFIG_SRCDIR([src/XFileExplorer.cpp])
AM_INIT_AUTOMAKE([-Wall])
AM_CONFIG_HEADER([config.h])


# Test if compilation variables are already set and if not, reset them
# This mechanism prevents these variables to be changed by the following AC macros
# while still allowing to use user's variables if they are defined
if test "$CXXFLAGS" = ""; then
CXXFLAGS=""
fi
if test "$CFLAGS" = ""; then
CFLAGS=""
fi

# Minimal LIBS
LIBS="$LIBS -lX11"

# Is this really necessary?
AC_USE_SYSTEM_EXTENSIONS

# Checks for programs
AC_PROG_CC
AC_PROG_CXX
AC_PROG_INSTALL
AC_PROG_LN_S
AC_PROG_MAKE_SET


# Internationalization
IT_PROG_INTLTOOL
GETTEXT_PACKAGE=xfe
AC_SUBST(GETTEXT_PACKAGE)
AC_DEFINE_UNQUOTED(GETTEXT_PACKAGE,"$GETTEXT_PACKAGE",[The package name, for gettext])
AM_GNU_GETTEXT

# Checks for header files.
AC_PATH_X
AC_FUNC_ALLOCA
AC_HEADER_DIRENT
AC_HEADER_STDC
AC_HEADER_SYS_WAIT
AC_CHECK_HEADERS([fcntl.h mntent.h stdlib.h string.h sys/ioctl.h sys/statfs.h sys/time.h unistd.h utime.h])


# Checks for typedefs, structures, and compiler characteristics.
AC_HEADER_STDBOOL
AC_C_CONST
AC_TYPE_UID_T
AC_C_INLINE
AC_TYPE_MODE_T
AC_TYPE_PID_T
AC_TYPE_SIZE_T
AC_CHECK_MEMBERS([struct stat.st_rdev])
AC_HEADER_TIME
AC_STRUCT_TM


# Checks for library functions.
AC_FUNC_CHOWN
AC_FUNC_CLOSEDIR_VOID
AC_FUNC_ERROR_AT_LINE
AC_FUNC_FORK
AC_FUNC_GETGROUPS
AC_FUNC_GETMNTENT
AC_FUNC_LSTAT
AC_FUNC_LSTAT_FOLLOWS_SLASHED_SYMLINK
AC_FUNC_MALLOC
AC_FUNC_MKTIME
AC_FUNC_REALLOC
AC_FUNC_STAT
AC_FUNC_UTIME_NULL
AC_CHECK_FUNCS([endgrent endpwent gethostname getmntent gettimeofday lchown memset mkdir mkfifo putenv rmdir setlocale sqrt strchr strdup strerror strstr strtol strtoul strtoull utime])


# Large files support
AC_SYS_LARGEFILE


# Check for FOX 1.6
AC_CHECK_LIB(FOX-1.6,fxfindfox,,AC_MSG_ERROR("libFOX-1.6 not found"))


# Check for FOX 1.6 header files
AC_HEADER_STDC
AC_LANG_CPLUSPLUS
AC_CHECK_HEADER(fox-1.6/fx.h,,AC_MSG_ERROR("fox-1.6/fx.h not found"))


# Check if fox-config exists
AC_CHECK_PROGS(FOX_CONFIG,fox-config-1.6 fox-1.6-config fox-config)
if test no"$FOX_CONFIG" = no ; then
	AC_MSG_ERROR("fox-config not found")               
fi


# Include flags for the FOX library
FOXCFLAGS=`$FOX_CONFIG --cflags`
CXXFLAGS="${CXXFLAGS} $FOXCFLAGS"


# Check if FOX was compiled with xft support
TEST_XFT=`$FOX_CONFIG --libs | grep Xft`
if test "x$TEST_XFT" != "x" ; then
	
	echo "checking whether FOX was compiled with Xft support... yes"

	# Check for FreeType2 headers
	freetype_config=''
	AC_CHECK_PROGS(freetype_config,freetype-config,)
	if test -n "$freetype_config"; then
	  freetype_cflags=`$freetype_config --cflags`
	  freetype_libs=`$freetype_config --libs`
	  LIBS="$LIBS $freetype_libs"
	  CPPFLAGS="$freetype_cflags $CPPFLAGS"
	fi
	AC_CHECK_HEADER(config/ftheader.h,,AC_MSG_ERROR("ftheader.h not found"))

	# Check for Xft headers
	xft_config=''
	AC_CHECK_PROGS(xft_config,xft-config,)
	if test -n "$xft_config"; then
	  xft_cflags=`$xft_config --cflags`
	  xft_libs=`$xft_config --libs`
	  LIBS="$LIBS $xft_libs"
	  CPPFLAGS="$xft_cflags $CPPFLAGS"
	  CXXFLAGS="${CXXFLAGS} -DHAVE_XFT_H"
	else
		# On some systems (e.g. Fedora) xft-config is deprecated and pkg-config should be used instead
		pkg_config=''
		AC_CHECK_PROGS(pkg_config,pkg-config,)
		if test -n "$pkg_config"; then
		  xft_cflags=`$pkg_config --cflags xft`
		  xft_libs=`$pkg_config --libs xft`
		  LIBS="$LIBS $xft_libs"
		  CPPFLAGS="$xft_cflags $CPPFLAGS"
		  CXXFLAGS="${CXXFLAGS} -DHAVE_XFT_H"
		fi
	fi
	AC_CHECK_HEADER(X11/Xft/Xft.h,,AC_MSG_ERROR("Xft.h not found"))

else
	echo "checking whether FOX was compiled with Xft support... no"
fi


# Check for Xlib headers
AC_CHECK_HEADER(X11/Xlib.h,,AC_MSG_ERROR("Xlib.h not found"))


# Check for libPNG
AC_CHECK_LIB(png, png_read_info,,AC_MSG_ERROR("libPNG not found"))
AC_CHECK_HEADER(png.h,,AC_MSG_ERROR("png.h not found"))


# Check for startup notification support
AC_MSG_CHECKING(for startup notification)
AC_ARG_ENABLE(sn,[  --disable-sn            compile without startup notification support])
AC_MSG_RESULT([$enable_sn])
AC_SUBST(STARTUPNOTIFY,false)
if test "x$enable_sn" != "xno"; then
	CXXFLAGS="${CXXFLAGS} -DSTARTUP_NOTIFICATION"
	AC_SUBST(STARTUPNOTIFY,true)
	enable_sn=yes
fi
AM_CONDITIONAL(STARTUPNOTIFY, [test x$enable_sn = xyes])


# Building for debugging
AC_MSG_CHECKING(for debugging)
AC_ARG_ENABLE(debug,[  --enable-debug          compile for debugging])
AC_MSG_RESULT([$enable_debug])

# Add debug symbols
AC_MSG_CHECKING(minimalflags)
AC_ARG_ENABLE(minimalflags,[  --enable-minimalflags   respect system flags as much as possible])
AC_MSG_RESULT([$enable_minimalflags])

# Building for release
AC_MSG_CHECKING(for release build)
AC_ARG_ENABLE(release,[  --enable-release        compile for release (advanced optimizations)])
AC_MSG_RESULT([$enable_release])


if test "x$enable_minimalflags" = "xyes" ; then
	if test "x$enable_debug" = "xyes" ; then
		CPPFLAGS="$CPPFLAGS -DDEBUG"
	else
		CPPFLAGS="$CPPFLAGS -DNDEBUG"
	fi
else
	# Setting CXXFLAGS
	if test "x$enable_debug" = "xyes" ; then
		CXXFLAGS="${CXXFLAGS} -g -DDEBUG"
	elif test "x$enable_release" = "xyes" ; then
		CXXFLAGS="-DNDEBUG ${CXXFLAGS} "
		if test "${GXX}" = "yes" ; then
			CXXFLAGS="-O3 -Wall -ffast-math -fomit-frame-pointer -fno-strict-aliasing ${CXXFLAGS}"
		fi
	else
		CXXFLAGS="-O2 ${CXXFLAGS}"
	fi


	# Setting CFLAGS
	if test "x$enable_debug" = "xyes" ; then
		CFLAGS="${CFLAGS} -g -DDEBUG"
	elif test "x$enable_release" = "xyes" ; then
		CFLAGS="-DNDEBUG ${CFLAGS}"
		if test "${GCC}" = "yes" ; then
			CFLAGS="-O3 -Wall -ffast-math -fomit-frame-pointer -fno-strict-aliasing ${CFLAGS}"
		fi
	else
		CFLAGS="-O2 ${CFLAGS}"
	fi
fi


# Output
AC_OUTPUT(Makefile intl/Makefile m4/Makefile po/Makefile.in xfe.spec xferc xfe.desktop.in xfi.desktop.in xfv.desktop.in
          xfw.desktop.in xfp.desktop.in src/Makefile
          icons/Makefile icons/xfe-theme/Makefile icons/gnome-theme/Makefile
          icons/xfce-theme/Makefile icons/gnomeblue-theme/Makefile
		  icons/windows-theme/Makefile icons/brown-theme/Makefile icons/blue-theme/Makefile
		  icons/tango-theme/Makefile icons/kde-theme/Makefile)


# Display CXXFLAGS, CFLAGS and LIBS
echo ""
echo "======================== Compiler and linker flags ========================"
echo "CXXFLAGS=$CXXFLAGS"
echo "CFLAGS=$CFLAGS"
echo "LIBS=$LIBS"
echo "==========================================================================="


# Warning message about Xft support
if test "x$TEST_XFT" == "x" ; then
	echo ""
	echo "==================================== Warning ================================================"
	echo "Configure has detected that your FOX library was compiled without Xft support."
	echo "You will not have antialiased fonts in Xfe, and non UTF-8 strings could be wrongly displayed."
	echo "If this is what you want, you can safely ignore what follows."
	echo "If not, you have to enable Xft support in FOX and recompile it."
	echo "          Do: './configure --with-xft' to enable Xft support in FOX."
	echo "       Then : 'make' to compile the FOX library."
	echo "         And: 'make install' (as root) to install it."
	echo "============================================================================================="
fi


echo ""
echo "Configure finished!"
echo "              Do:  'make' to compile Xfe."
echo "            Then:  'make install' (as root) to install Xfe."
echo ""