# Public domain

REGISTER("--with-ode",		"SG: ODE physics interface [default: check]")
REGISTER("--with-cg",		"SG: CG shader support [default: check]")
REGISTER("--enable-warnings",	"Suggested compiler warnings [default: no]")
REGISTER("--enable-edition",	"Enable edition features [default: yes]")

# FreeSG version
HDEFINE(VERSION, "0.1.1")
HDEFINE(RELEASE, "A Mild Breeze on the Brow of the Dead")

# Installation directories
MDEFINE(SHAREDIR, "\${PREFIX}/share/freesg")
HDEFINE(SHAREDIR, "$PREFIX/share/freesg")
MDEFINE(INCLDIR, "\${PREFIX}/include/freesg")
HDEFINE(INCLDIR, "$PREFIX/include/freesg")

CHECK(cc)
CHECK(sys_types)
CHECK(sys_queue)
CHECK(stdlib_h)
CHECK(unistd_h)
CHECK(limits_h)
CHECK(math)
CHECK(strsep)
CHECK(asprintf)
CHECK(vasprintf)
CHECK(snprintf)
CHECK(vsnprintf)
CHECK(strtoll)
CHECK(opengl)

C_DEFINE(_FREESG_INTERNAL)
C_DEFINE(_USE_AGAR_CPUINFO)
C_DEFINE(_USE_AGAR_STD)
C_DEFINE(_USE_AGAR_QUEUE)
C_DEFINE(_USE_AGAR_CORE)
C_DEFINE(_USE_AGAR_GUI)
C_DEFINE(_USE_AGAR_MATH)
C_NO_SECURE_WARNINGS()
#C_EXTRA_WARNINGS()
#C_FATAL_WARNINGS()

if [ "${enable_warnings}" = "yes" ]; then
	C_OPTION(-Wall)
	C_OPTION(-Werror)
	C_OPTION(-Wmissing-prototypes)
	MDEFINE(WNO_UNINITIALIZED, "-Wno-uninitialized")
else
	MDEFINE(WNO_UNINITIALIZED, "")
fi

if [ "${enable_threads}" != "no" ]; then
	CHECK(pthreads)
	if [ "${HAVE_PTHREADS}" = "yes" ]; then
		if [ "${enable_threads}" = "yes" ]; then
			echo "*"
			echo "* --enable-threads was given, but could not find"
			echo "* a usable pthreads library. Try running the"
			echo "* configure script again without this option."
			echo "*"
			exit 1
		fi
	fi
fi

# Agar is required.
CHECK(agar, 1.4)
CHECK(agar-math)
if [ "${HAVE_AGAR}" = "no" ]; then
	echo "*"
	echo "* The Agar library is not installed on your system. It is "
	echo "* required by this package. See http://libagar.org/"
	echo "*"
	exit 1
fi
if [ "${HAVE_AGAR_MATH}" = "no" ]; then
	echo "*"
	echo "* The Agar-Math library is not installed on your system. It is "
	echo "* required by this package. See http://libagar.org/"
	echo "*"
	exit 1
fi

# Enable ODE interface if libode is found.
if [ "${with_ode}" != "no" ]; then
	CHECK(ode)
	if [ "${HAVE_ODE}" != "yes" ]; then
		if [ "${with_ode}" = "yes" ]; then
			echo "*"
			echo "* --with-ode was requested, but ODE was not"
			echo "* found on this system."
			echo "*"
			exit 1
		else
			HUNDEF(HAVE_ODE)
		fi
	fi
else
	HUNDEF(HAVE_ODE)
fi

# Enable CG support if Cg toolkit is found.
if [ "${with_cg}" != "no" ]; then
	CHECK(cg)
	if [ "${HAVE_CG}" != "yes" ]; then
		if [ "${with_cg}" = "yes" ]; then
			echo "*"
			echo "* --with-cg was requested, but Cg was not"
			echo "* found on this system."
			echo "*"
			exit 1
		else
			HUNDEF(HAVE_CG)
		fi
	fi
else
	HUNDEF(HAVE_CG)
fi

if [ "${enable_debug}" = "yes" ]; then
	MDEFINE(CFLAGS, "$CFLAGS -DDEBUG")
fi
if [ "${enable_edition}" != "no" ]; then
	C_DEFINE(EDITION)
fi

# Generate includes into ./include/freesg.
C_INCPREP(include,freesg)

# We use both <foo.h> and <freesg/foo.h> in the sources.
C_INCDIR($BLD/include)
C_INCDIR($BLD/include/freesg)
C_INCDIR_CONFIG($BLD/include/freesg/config)

echo "*"
echo "* Configuration successful."
echo "* Use make && make install to build and install FreeSG."
echo "*"