AC_INIT(ZeroPAD,0.2,zerofrog@gmail.com)

AM_INIT_AUTOMAKE(ZeroPAD,0.2)

AC_PROG_CC([gcc g++ cl KCC CC cxx cc++ xlC aCC c++])
AC_PROG_CXX([gcc g++ cl KCC CC cxx cc++ xlC aCC c++])
AC_PROG_CPP([gcc g++ cl KCC CC cxx cc++ xlC aCC c++])

AC_PROG_INSTALL
AC_PROG_RANLIB

dnl necessary for compiling assembly
AM_PROG_AS

ZEROPAD_CURRENT=0
ZEROPAD_REVISION=2
ZEROPAD_AGE=0
ZEROPAD_SONAME=libZeroPAD.so.[$ZEROPAD_CURRENT].[$ZEROPAD_REVISION].[$ZEROPAD_AGE]
ZEROPAD_RELEASE=[$ZEROPAD_CURRENT].[$ZEROPAD_REVISION].[$ZEROPAD_AGE]

AC_SUBST(ZEROPAD_CURRENT)
AC_SUBST(ZEROPAD_REVISION)
AC_SUBST(ZEROPAD_AGE)
AC_SUBST(ZEROPAD_RELEASE)
AC_SUBST(ZEROPAD_SONAME)

CFLAGS=
CXXFLAGS=

dnl Check for debug build
AC_MSG_CHECKING(debug build)
AC_ARG_ENABLE(debug, AC_HELP_STRING([--enable-debug], [debug build]),
 debug=$enableval,debug=no)
if test "x$debug" == xyes
then
 AC_DEFINE(_DEBUG,1,[_DEBUG])
 CFLAGS+="-g "
 CXXFLAGS+="-g "
else
 AC_DEFINE(NDEBUG,1,[NDEBUG])
 CFLAGS+="-O2 -fomit-frame-pointer "
 CXXFLAGS+="-O2 -fomit-frame-pointer "
fi
AM_CONDITIONAL(DEBUGBUILD, test x$debug = xyes)
AC_MSG_RESULT($debug)

dnl Check for 64bit CPU
AC_MSG_CHECKING(for a x86-64 CPU)
dnl if test "$build_os" == "target_os"
dnl then
AC_TRY_RUN([
int main()
{
int a = 0;
int*pa = &a;
asm(".intel_syntax\n"
	"mov %%rax, %0\n"
    "mov %%eax, [%%rax]\n"
    ".att_syntax\n"
    : : "r"(pa) : "%rax");
return 0;
}
],cpu64=yes,cpu64=no,)
dnl else
dnl cpu64=no
dnl fi
if test "x$cpu64" == xyes
then
AC_DEFINE(__x86_64__,1,[__x86_64__])
fi
AC_MSG_RESULT($cpu64)
AM_CONDITIONAL(X86_64, test x$cpu64 = xyes)

AC_CHECK_FUNCS([ _aligned_malloc _aligned_free ], AC_DEFINE(HAVE_ALIGNED_MALLOC))

AC_CHECK_LIB(SDL,SDL_Init,[])

dnl gtk
AC_MSG_CHECKING(gtk2+)
AC_CHECK_PROG(GTK_CONFIG, pkg-config, pkg-config)
LIBS+=$(pkg-config --libs gtk+-2.0 sdl)
CFLAGS+="$(pkg-config --cflags gtk+-2.0 sdl) "
CXXFLAGS+="$(pkg-config --cflags gtk+-2.0 sdl) "

dnl AC_CHECK_HEADER([SDL/SDL.h], [AC_DEFINE(JOYSTICK_SUPPORT,1)])

dnl assuming linux environment
so_ext=".so.$ZEROPAD_RELEASE"
SHARED_LDFLAGS="-shared"
AC_SUBST(so_ext)
AC_SUBST(SHARED_LDFLAGS)

AC_CHECK_LIB(stdc++,main,[LIBS="$LIBS -lstdc++"])
AC_CHECK_LIB(dl,main,[LIBS="$LIBS -ldl"])


AC_OUTPUT([
 Makefile
 ])

echo "Configuration:"
echo "  Debug build?	       $debug"
echo "  x86-64 build?	       $cpu64"