AC_INIT(game/main.cpp)

dnl Setup for automake
AM_INIT_AUTOMAKE("Shaaft",0.5.0)
AM_CONFIG_HEADER(defines.h)
AC_EXEEXT

dnl Checks for programs.
AC_PROG_CC
AC_PROG_CXX
AC_PROG_RANLIB

dnl Checks for libraries.

dnl Checks for header files.

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

dnl Checks for library functions.

CFLAGS=""
CXXFLAGS=""

if test "x$GCC" = xyes; then
   CFLAGS="$CFLAGS -W -Wall"
   CXXFLAGS="$CXXFLAGS -W -Wall -fno-exceptions"
fi

AC_ARG_ENABLE(debug,
[  --enable-debug               Enable debugging [default=off]],
        enable_debug=$enableval, enable_debug=off)
if test "x$enable_debug" = xyes; then
        CFLAGS="$CFLAGS -g"
        CXXFLAGS="$CXXFLAGS -g"
fi

AC_ARG_ENABLE(optimize,
[  --enable-optimize=[level]    Enable optimization [default=2]],
        enable_optmize=$enableval, enable_optimize=2)
if test "x$enable_optimize" != "xno" ; then
        CFLAGS="$CFLAGS -O$enable_optimize"
        CXXFLAGS="$CXXFLAGS -O$enable_optimize"
fi

AC_ARG_ENABLE(trace,
[  --enable-trace               Enable tracing [default=off]],
        enable_trace=$enableval, enable_trace=off)
if test "x$enable_trace" = xyes; then
        CFLAGS="$CFLAGS -DTRACE"
        CXXFLAGS="$CXXFLAGS -DTRACE"
fi

AC_ARG_ENABLE(dyngl,
[  --enable-dyngl               Load GL library dynamically [default=off]],
        enable_dyngl=$enableval, enable_dyngl=off)
if test "x$enable_dyngl" = xyes; then
        CFLAGS="$CFLAGS -DDYNAMIC_GL"
        CXXFLAGS="$CXXFLAGS -DDYNAMIC_GL"
fi

AC_CHECK_LIB(SDL, main,
    LIBS="$LIBS `sdl-config --libs`" ; \
    CFLAGS="$CFLAGS `sdl-config --cflags`" ; \
    CXXFLAGS="$CXXFLAGS `sdl-config --cflags`" ; \
    HAVE_SDL=1, AC_MSG_ERROR(SDL is needed), `sdl-config --libs`)

AC_CHECK_LIB(SDL_image, main, LIBS="$LIBS -lSDL_image", 
	AC_MSG_ERROR(SDL_image is needed))

AC_CHECK_LIB(SDL_mixer, main, LIBS="$LIBS -lSDL_mixer", 
 	AC_MSG_ERROR(SDL_mixer is needed))

AC_MINGW32
if test "x$MINGW32" = xyes; then
    AM_CONDITIONAL(WIN32,test x = x)
    AC_MSG_RESULT(Adding special ingredients for mingw32)
    LIBS="$LIBS -lopengl32 -lpng -lz -ljpeg -lstdc++"
dnl    CFLAGS="$CFLAGS `sdl-config --cflags`" ; \
dnl    CXXFLAGS="$CXXFLAGS `sdl-config --cflags`" ; \
else
    AM_CONDITIONAL(WIN32,test x = y)
    LIBS="-L/usr/local/lib -L/usr/X11R6/lib $LIBS"
    CFLAGS="$CFLAGS -I/usr/X11R6/include" ; \
    CXXFLAGS="$CXXFLAGS -I/usr/X11R6/include"
    AC_CHECK_LIB(png12, main,, AC_MSG_ERROR(libpng12 is needed))
    AC_CHECK_LIB(z, main,, AC_MSG_ERROR(libz is needed))
    if test "x$enable_dyngl" = xoff; then
        AC_CHECK_LIB(GL, glBegin,, AC_MSG_ERROR(OpenGL is needed))
    fi
fi

AC_CHECK_LIB(m, sin,, 
    AC_MSG_ERROR(libm is needed))

AC_OUTPUT(Makefile utils/Makefile utilssdl/Makefile utilsgl/Makefile game/Makefile tools/Makefile)