dnl Process this file with autoconf to produce a configure script.
AC_INIT(src/cpu.c)
AM_CONFIG_HEADER(config.h)
AM_INIT_AUTOMAKE(gngb,20060309)

dnl Setup for automake

AC_LANG_C

MY_CFLAGS="$CFLAGS"

OUTPUT="Makefile src/Makefile"

dnl Checks for programs.
AC_PROG_CC

AC_C_BIGENDIAN

dnl Checks for libraries.

AC_CHECK_LIB(pthread, pthread_create,,AC_MSG_ERROR(SDL library needs pthread Library))

AC_CHECK_PROG(SDL_CONFIG, sdl-config, yes,no)
if test "$SDL_CONFIG" = yes ; then
	CFLAGS="$CFLAGS -DSDL_YUV `sdl-config --cflags`";
	LIBS="$LIBS `sdl-config --libs`";
	AC_CHECK_LIB(SDL, SDL_Init,,AC_MSG_ERROR(can't find SDL on your system))
else 
	AC_MSG_ERROR(can't find sdl-config on your system);
fi

dnl Checks for header files.
AC_HEADER_DIRENT
AC_HEADER_STDC
AC_CHECK_HEADERS(fcntl.h sys/time.h unistd.h )

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

dnl Checks for library functions.
dnl AC_SUBST(LIBOBJS)
AC_FUNC_VPRINTF
AC_CHECK_FUNCS(gettimeofday sleep mkdir socket strtol)
dnl AC_CHECK_FUNCS(getopt_long ,[GETOPT_LONG=yes , [LIBOBJS="$LIBOBJS getopt.o getopt1.o"]])
dnl AC_CHECK_FUNCS(getopt_long , , [LIBOBJS="$LIBOBJS getopt.o getopt1.o"])
AC_CHECK_FUNCS(getopt_long , , [ AC_LIBOBJ(getopt) AC_LIBOBJ(getopt1) ])

#Compress Roms
dnl AC_ARG_ENABLE(compress_roms,[  --disable-compress-roms      disable compress roms support], [enablecompress_roms=$enableval], [enablecompress_roms=yes])

dnl if test "$enablecompress_roms" = yes; then
AC_CHECK_HEADER(bzlib.h,AC_CHECK_LIB(bz2, BZ2_bzopen,,AC_MSG_ERROR(can't find bzlil on your system)))
AC_CHECK_HEADER(zlib.h,AC_CHECK_LIB(z, gzopen,,AC_MSG_ERROR(can't find zlib on your system)))

dnl UNZIP_SRC="unzip.c unzip.h"
dnl LIBOBJS="$LIBOBJS unzip.o"
dnl AC_LIBOBJ([unzip])
dnl else 
dnl UNZIP_SRC=""
dnl fi	
dnl AC_SUBST(UNZIP_SRC)



#Opengl Mode

AC_ARG_ENABLE(gl,[  --enable-gl               enable opengl support], [enablegl=$enableval], [enablegl=yes])

if test "$enablegl" = yes ; then
	AC_CHECK_HEADER(GL/gl.h,,enablegl=no)
	AC_CHECK_LIB(GL, glBegin,
		[LIBS="$LIBS -lGL";
		CFLAGS="$CFLAGS -DSDL_GL ";]
	,enablegl=no)
fi


AM_CONDITIONAL(NATIVE_GETOPT_LONG, test "$GETOPT_LONG" = yes)


dnl Force Big Endian

AC_ARG_ENABLE(big_endian,[  --enable-big-endian               Force Big Endian], [enablebig_endian=$enableval], [enablebig_endian=no])

if test "$enablebig_endian" = yes ; then
	CFLAGS="$CFLAGS -DWORDS_BIGENDIAN ";
fi

dnl Arch

case `uname -m` in
*686) arch_info=i686 ;;
*i586) arch_info=i586 ;;
*i486) arch_info=i486 ;;
*i386) arch_info=i386 ;;
*sun4u) arch_info=sun4u ;;
*) arch_info=no ;;
esac

AC_MSG_RESULT(Architeture: $arch_info) 

dnl System

sys_info=`uname -s`

AC_MSG_RESULT(System: $sys_info)

case $arch_info in
i686|i586|i486|i386) OPT="-O3  -Wno-unused -funroll-loops -fstrength-reduce \
                          -ffast-math -falign-functions=2 -falign-jumps=2 \
                          -falign-loops=2 -fomit-frame-pointer -Wall " ;;
sun4u)               OPT="-O3  -Wno-unused -funroll-loops -fstrength-reduce \
                          -ffast-math -falign-functions=4 -falign-jumps=4 \
                          -falign-loops=4 -fomit-frame-pointer -Wall " ;;
no)                  OPT="-O3 -Wall " ;;
esac

case $sys_info in
SunOS) LDOPT="-lnsl -lsocket -lresolv" ;;
esac

CFLAGS="$CFLAGS $OPT"
LIBS="$LIBS $LDOPT"

AC_OUTPUT(Makefile src/Makefile )