dnl Process this file with autoconf to produce a configure script.

# Copyright (C) 1996 Keith Whitwell.
# This file may only be copied under the terms of the GNU Library General
# Public License - see the file COPYING in the lib3d distribution.
# Contributed by Markus F.X.J. Oberhumer <markus.oberhumer@jk.uni-linz.ac.at>

AC_INIT(src/Node.cc)
AC_PREREQ(2.12)
AC_CONFIG_AUX_DIR(acconfig)
AC_PREFIX_DEFAULT(/usr/local)
AM_INIT_AUTOMAKE(lib3d,0.1.9)
AM_CONFIG_HEADER(config.h:config.hin)
AC_CANONICAL_HOST

AM_MAINTAINER_MODE

enable_static=no
AM_PROG_LIBTOOL

lib3d='$(top_builddir)/src/lib3d.la'
libprimitive='$(top_builddir)/primitive/libprimitive.la'
AC_SUBST(lib3d)
AC_SUBST(libprimitive)

dnl Checks for programs.
AM_PROG_INSTALL
AC_PROG_CXX
AC_LANG_CPLUSPLUS
AC_PATH_X


dnl *** Set debug flags here ***

if test "$GCC" = yes; then

CXXFLAGS="-O2 -Wall -Winline -fomit-frame-pointer -fconserve-space -DNO_DEBUG"
dnl CXXFLAGS="-g -fno-inline -Wall -Winline"
CXXFLAGS="$CXXFLAGS -Wpointer-arith -Wcast-align -Wbad-function-cast -Wwrite-strings"

if test "x$depend" = x ; then
	depend="\$(CXX) \$(INCLUDES) -M \$(SOURCES) > depend.mkf"
fi

else

CXXFLAGS="-O -DNO_DEBUG"
AC_CHECK_PROG(depend,makedepend,makedepend \$(INCLUDES) -- \$(SOURCES),
@echo no makedepend autodetected,,,)

fi


dnl 
AC_MSG_CHECKING(machine specific fpu control)
case "$host" in
 	i*86-*-linux-*) 
	  	echo "ix86-linux"
		arch=i486-unknown-linux.lo
		;;
	*) 
		echo "generic"
		arch=generic.lo
		CXXFLAGS="$CXXFLAGS -DROUNDING=0.5" 
		;;
esac


dnl If we have X, try to find out what extensions are available.
dnl
if test "$have_x" = yes; then

AC_CHECK_LIB(X11,XOpenDisplay,LIBS="$LIBS -L$x_libraries -lX11";
extra_devices="$extra_devices XDevice.lo XImageDevice.lo XHandler.lo";
extra_demos="$extra_demos testxlib",,"-L$x_libraries")

AC_CHECK_LIB(Xext,XShmQueryExtension,LIBS="$LIBS -lXext";
extra_devices="$extra_devices XShmDevice.lo"
,,"-L$x_libraries")

AC_CHECK_LIB(Xxf86dga,main,LIBS="$LIBS -lXxf86dga";
extra_devices="$extra_devices DgaDevice.lo"
,,"-L$x_libraries")

fi

dnl Check for SVGAlib...
dnl
AC_CHECK_LIB(vga,vga_init,LIBS="$LIBS -lvga";
extra_devices="$extra_devices SvgaDevice.lo",,)


dnl Checks for libraries.
AC_CHECK_LIB(m, sin)

dnl Checks for header files.
AC_HEADER_STDC
AC_CHECK_HEADERS(sys/file.h sys/time.h unistd.h sys/ipc.h sys/shm.h X11/extensions/XShm.h X11/extensions/xf86dga.h)

MACH=`uname -m`
if test "$GCC" = yes; then
case $MACH in
i486) CXXFLAGS="$CXXFLAGS -m486";;
i586) CXXFLAGS="$CXXFLAGS -m486 -malign-loops=2 -malign-jumps=2 -malign-functions=2";;
esac
fi

dnl Checks for typedefs, structures, and compiler characteristics.
AC_TYPE_SIZE_T
AC_HEADER_TIME

AC_SUBST(depend)
AC_SUBST(extra_devices)
AC_SUBST(extra_demos)
AC_SUBST(dynalinkflag)
AC_SUBST(x_includes)
AC_SUBST(x_libraries)
AC_SUBST(arch)

AC_OUTPUT(Makefile src/Makefile primitive/Makefile demos/Makefile)