############################################################################
# JWM autoconf.
############################################################################

AC_INIT(jwm, 1.8, joewing@joewing.net)
AC_PREREQ(2.57)
AC_CONFIG_SRCDIR([src])
AC_CONFIG_HEADER([config.h])
AC_LANG(C)

AC_PROG_CC
AC_PROG_CPP

############################################################################
# Check if we need _XOPEN_SOURCE
############################################################################
AC_MSG_CHECKING([if _XOPEN_SOURCE should be defined])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#define _XOPEN_SOURCE 600L
#include <unistd.h>
]])], [use_xopen_source="yes"], [use_xopen_source="no"])
AC_MSG_RESULT([$use_xopen_source])

if test $use_xopen_source = "yes"; then

  AC_DEFINE(_XOPEN_SOURCE, 600L, [Define for single UNIX conformance])

  # Needed for IRIX 6.2 so that struct timeval is declared.
  AC_DEFINE(_XOPEN_SOURCE_EXTENDED, 1, [Define for timeval on IRIX 6.2])

  # Needed for Solaris 2.5.1 so that struct timeval is declared.
  AC_DEFINE(__EXTENSIONS__, 1, [Define for timeval on Solaris 2.5.1])

fi

############################################################################
# Check for X11
############################################################################
AC_PATH_X

if test ! "$no_x" = "yes" ; then
	if test ! x"$x_libraries" = x ; then
		LDFLAGS="$LDFLAGS -L$x_libraries"
	fi
	if test ! x"$x_includes" = x ; then
		CFLAGS="$CFLAGS -I$x_includes"
	fi
else
	AC_MSG_ERROR([Could not find X11])
fi

AC_CHECK_LIB([X11], XOpenDisplay,
	[ LDFLAGS="$LDFLAGS -lX11" ],
	[ AC_MSG_ERROR([libX11 not found]) ])

############################################################################
# Check for necessary include files.
############################################################################
AC_CHECK_HEADERS([stdarg.h stdio.h stdlib.h ctype.h], [],
	[ AC_MSG_ERROR([one or more necessary header files not found]) ])

AC_CHECK_HEADERS([sys/select.h signal.h unistd.h time.h sys/wait.h sys/time.h])

AC_CHECK_HEADERS([alloca.h])

AC_CHECK_HEADERS([X11/Xlib.h], [],
	[ AC_MSG_ERROR([Xlib.h could not be found]) ])

AC_CHECK_HEADERS([X11/Xutil.h X11/cursorfont.h X11/Xproto.h \
	X11/Xatom.h X11/keysym.h X11/Xresource.h], [], [],
	[
#include <X11/Xlib.h>
	])

############################################################################
# Check for pkg-config.
############################################################################

AC_DEFUN([JWM_PKGCONFIG_EXISTS],
[
	AC_MSG_CHECKING([for pkg-config])
	if test -x `which pkg-config` ; then
		PKGCONFIG="pkg-config"
	fi
	AC_MSG_RESULT($PKGCONFIG)
])

AC_DEFUN([JWM_PKGCONFIG],
[
	AC_REQUIRE([JWM_PKGCONFIG_EXISTS])
	if test "x$PKGCONFIG" != "x" ; then
		AC_MSG_CHECKING([if pkg-config knows about $2])
		if test `$PKGCONFIG $2 ; echo $?` -eq 0 ; then
			$1="yes"
		else
			$1="no"
		fi
		AC_MSG_RESULT($$1)
	else
		$1="no"
	fi
])

JWM_PKGCONFIG([use_pkgconfig_png], [libpng])
JWM_PKGCONFIG([use_pkgconfig_xft], [xft])
JWM_PKGCONFIG([use_pkgconfig_xrender], [xrender])
JWM_PKGCONFIG([use_pkgconfig_fribidi], [fribidi])

############################################################################
# Check if confirm dialogs should be used.
############################################################################
AC_ARG_ENABLE(confirm,
	AC_HELP_STRING([--disable-confirm], [don't enable confirm dialogs]) )
if test "$enable_confirm" = "no" ; then
	AC_DEFINE(DISABLE_CONFIRM, 1, [Define to disable confirm dialogs])
else
	enable_confirm="yes"
fi

############################################################################
# Check if icon support was requested.
############################################################################
AC_ARG_ENABLE(icons,
	AC_HELP_STRING([--disable-icons], [don't enable icon support]) )
if test "$enable_icons" != "no" ; then
	enable_icons="yes"
	AC_DEFINE(USE_ICONS, 1, [Define to enable icon support] )
fi

############################################################################
# Check if PNG support was requested and available.
############################################################################
AC_ARG_ENABLE(png,
	AC_HELP_STRING([--disable-png], [don't support PNG images]) )
if test "$enable_png" != "no" ; then

	if test "$use_pkgconfig_png" = "yes" ; then
		PNG_CFLAGS=`$PKGCONFIG --cflags libpng`
		PNG_LDFLAGS=`$PKGCONFIG --libs libpng`
	elif test -x `which libpng-config` ; then
		PNG_CFLAGS=`libpng-config --cflags`
		PNG_LDFLAGS=`libpng-config --libs`
	else
		PNG_LDFLAGS="-lpng -lz -lm"
	fi

fi
if test "$enable_png" != "no" ; then
	AC_CHECK_LIB(png, png_read_image,
		[ LDFLAGS="$LDFLAGS $PNG_LDFLAGS"
		  CFLAGS="$CFLAGS $PNG_CFLAGS"
		  enable_png="yes"
		  AC_DEFINE(USE_PNG, 1, [Define to use libpng]) ],
		[ enable_png="no"
		  AC_MSG_WARN([unable to use libpng, PNG support disabled]) ],
		[ $PNG_LDFLAGS ])
fi

############################################################################
# Check if XFT support was requested and available.
############################################################################
AC_ARG_ENABLE(xft,
	AC_HELP_STRING([--disable-xft], [don't use Xft]) )
if test "$enable_xft" != "no"; then

	if test "$use_pkgconfig_xft" = "yes" ; then
		XFT_CFLAGS=`$PKGCONFIG --cflags xft`
		XFT_LDFLAGS=`$PKGCONFIG --libs xft`
	elif test -x `which xft-config` ; then
		XFT_CFLAGS=`xft-config --cflags`
		XFT_LDFLAGS=`xft-config --libs`
	else
		XFT_LDFLAGS="-lXft"
	fi

fi
if test "$enable_xft" != "no" ; then
	AC_CHECK_LIB(Xft, XftFontOpenName,
		[ LDFLAGS="$LDFLAGS $XFT_LDFLAGS"
		  CFLAGS="$CFLAGS $XFT_CFLAGS"
		  enable_xft="yes"
		  AC_DEFINE(USE_XFT, 1, [Define to enable Xft]) ],
		[ enable_xft="no"
		  AC_MSG_WARN([unable to use Xft]) ],
		[ $XFT_LDFLAGS ])
fi
if test "$enable_xft" != "no" ; then
	AC_CHECK_HEADERS([ft2build.h])
fi

############################################################################
# Check if support for the XRENDER extension was requested and available.
############################################################################
AC_ARG_ENABLE(xrender,
	AC_HELP_STRING([--disable-xrender], [don't use the XRender extension]) )
if test "$enable_xrender" != "no"; then

	if test "$use_pkgconfig_xrender" = "yes" ; then
		XRENDER_CFLAGS=`$PKGCONFIG --cflags xrender`
		XRENDER_LDFLAGS=`$PKGCONFIG --libs xrender`
	else
		XRENDER_LDFLAGS="-lXrender"
	fi

	AC_CHECK_HEADERS([X11/extensions/Xrender.h], [],
		[
			enable_xrender="no";
			AC_MSG_WARN([unable to use X11/extensions/XRender.h])
		])

fi
if test "$enable_xrender" != "no" ; then
	AC_CHECK_LIB(Xrender, XRenderComposite,
		[ LDFLAGS="$LDFLAGS $XRENDER_LDFLAGS"
		  CFLAGS="$CFLAGS $XRENDER_CFLAGS"
		  enable_xrender="yes"
		  AC_DEFINE(USE_XRENDER, 1, [Define to enable the XRender extension]) ],
		[ enable_xrender="no"
		  AC_MSG_WARN([unable to use the XRender extension]) ],
		[ $XRENDER_LDFLAGS ])
fi

############################################################################
# Check if FriBidi support was requested and available.
############################################################################
AC_ARG_ENABLE(fribidi,
	AC_HELP_STRING([--disable-fribidi],
		[disable bi-directional unicode support]) )
if test "$enable_fribidi" != "no" ; then

	if test "$use_pkgconfig_fribidi" = "yes" ; then
		FRIBIDI_CFLAGS=`$PKGCONFIG --cflags fribidi`
		FRIBIDI_LDFLAGS=`$PKGCONFIG --libs fribidi`
	elif test -x `which fribidi-config` ; then
		FRIBIDI_CFLAGS=`fribidi-config --cflags`
		FRIBIDI_LDFLAGS=`fribidi-config --libs`
	else
		FRIBIDI_LDFLAGS="-lfribidi"
	fi

fi
if test "$enable_fribidi" != "no" ; then
	AC_CHECK_LIB(fribidi, fribidi_log2vis,
		[ LDFLAGS="$LDFLAGS $FRIBIDI_LDFLAGS"
		  CFLAGS="$CFLAGS $FRIBIDI_CFLAGS"
		  enable_fribidi="yes"
		  AC_DEFINE(USE_FRIBIDI, 1, [Define to use FriBidi]) ],
		[ enable_fribidi="no"
		  AC_MSG_WARN([unable to use FriBidi]) ],
		[ $FRIBIDI_LDFLAGS ])
fi

############################################################################
# Check if XPM support was requested and available.
############################################################################
AC_ARG_ENABLE(xpm,
	AC_HELP_STRING([--disable-xpm], [don't support XPM images]) )
if test "$enable_xpm" != "no"; then
	AC_CHECK_HEADERS([X11/xpm.h], [],
		[ enable_xpm="no";
		  AC_MSG_WARN([unable to use X11/xpm.h]) ])
fi
if test "$enable_xpm" != "no"; then
	AC_CHECK_DECL(XpmAllocColor, [],
		[ enable_xpm="no"
		  AC_MSG_WARN([XPM library too old]) ],
		[
#include <X11/xpm.h>
])
fi
if test "$enable_xpm" != "no"; then
	AC_CHECK_LIB(Xpm, XpmReadFileToImage,
		[ LDFLAGS="$LDFLAGS -lXpm";
		  enable_xpm="yes"
		  AC_DEFINE(USE_XPM, 1, [Define to enable XPM support]) ],
		[ enable_xpm="no"
		  AC_MSG_WARN([unable to use libXpm]) ])
fi

############################################################################
# Check if support for the shape extension was requested and available.
############################################################################
AC_ARG_ENABLE(shape,
	AC_HELP_STRING([--disable-shape], [don't use the X shape extension]) )
if test "$enable_shape" != "no"; then
	AC_CHECK_LIB(Xext, XShapeCombineRectangles,
		[ LDFLAGS="$LDFLAGS -lXext"
		  enable_shape="yes"
		  AC_DEFINE(USE_SHAPE, 1, [Define to enable the X shape extension]) ],
		[ enable_shape="no"
		  AC_MSG_WARN([unable to use the X shape extension]) ])
fi

############################################################################
# Check if support for Xinerama was requested and available.
############################################################################
AC_ARG_ENABLE(xinerama,
	AC_HELP_STRING([--disable-xinerama], [don't use Xinerama]) )
if test "$enable_xinerama" != "no"; then
	AC_CHECK_LIB(Xinerama, XineramaQueryExtension,
		[ LDFLAGS="$LDFLAGS -lXinerama"
		  enable_xinerama="yes"
		  AC_DEFINE(USE_XINERAMA, 1, [Define to enable Xinerama]) ],
		[ enable_xinerama="no"
		  AC_MSG_WARN([unable to use Xinerama]) ])
fi

############################################################################
# Check if debug mode was requested.
############################################################################
AC_ARG_ENABLE(debug,
	AC_HELP_STRING([--enable-debug], [use this to debug JWM]) )
if test "$enable_debug" = "yes"; then
	AC_DEFINE(DEBUG, 1, [Define to debug JWM])
	CFLAGS="$CFLAGS -Wall -g -DDEBUG"
	LDFLAGS="$LDFLAGS -g"
else
	enable_debug="no"
fi

############################################################################
# Create the output files.
############################################################################
if test "$prefix" = "NONE" ; then
	PREFIX="$ac_default_prefix"
	prefix="$ac_default_prefix"
else
	PREFIX="$prefix"
fi

if test "$exec_prefix" = "NONE" ; then
	exec_prefix="$PREFIX"
fi

if test "$sysconfdir" = "" ; then
	sysconfdir="$ac_default_sysconfdir"
fi

BINDIR=`eval echo \""$bindir"\"`
SYSCONF=`eval echo \"$sysconfdir\"`
MANDIR=`eval echo \"$mandir\"`

AC_DEFINE_UNQUOTED(SYSTEM_CONFIG, "$SYSCONF/system.jwmrc",
	[default system configuration path])

AC_SUBST(CFLAGS)
AC_SUBST(LDFLAGS)
AC_SUBST(VERSION, "$PACKAGE_VERSION")
AC_SUBST(INSTVERSION, `echo $PACKAGE_VERSION | tr -d .`)
AC_SUBST(BINDIR)
AC_SUBST(MANDIR)
AC_SUBST(DATE, `date "+%Y-%m-%d"`)
AC_SUBST(SYSCONF, "$SYSCONF")

AC_OUTPUT(

	Makefile src/Makefile jwm.1

	package/irix/jwm.spec package/irix/jwm.idb package/irix/Makefile

	package/solaris/Makefile package/solaris/pkginfo package/solaris/prototype

	package/slackware/Makefile package/slackware/slack-desc

)

############################################################################
# Display the status.
############################################################################

echo "Compiler:      $CC"
echo "Compile flags: $CFLAGS"
echo "Link flags:    $LDFLAGS"
echo
echo "Options"
echo
echo "    Confirm:  $enable_confirm"
echo "    Icon:     $enable_icons"
echo "    PNG:      $enable_png"
echo "    XPM:      $enable_xpm"
echo "    XFT:      $enable_xft"
echo "    XRender:  $enable_xrender"
echo "    FriBidi:  $enable_fribidi"
echo "    Shape:    $enable_shape"
echo "    Xinerama: $enable_xinerama"
echo "    Debug:    $enable_debug"
echo