ObjFW  Diff

			AC_MSG_RESULT(no)
			old_compiler="yes"
		])

		AC_SUBST(RUNTIME, "runtime")
		AC_SUBST(RUNTIME_FLAGS)

		if test x"$enable_shared" != x"no"; then
			AC_SUBST(RUNTIME_LIB_A, "runtime.lib.a")
			AC_SUBST(RUNTIME_RUNTIME_LIB_A, "runtime/runtime.lib.a")
		AS_IF([test x"$enable_shared" != x"no"], [
			AC_SUBST(OBJFW_RT_SHARED_LIB,
				"${LIB_PREFIX}objfw-rt${LIB_SUFFIX}")
		fi
		if test x"$enable_static" = x"yes" \
		    -o x"$enable_shared" = x"no"; then
			AC_SUBST(RUNTIME_A, "runtime.a")
		])
		AS_IF([test x"$enable_static" = x"yes" \
			-o x"$enable_shared" = x"no"],
			AC_SUBST(OBJFW_RT_STATIC_LIB, "libobjfw-rt.a")
		])
		AC_SUBST(RUNTIME_LIBS, "-lobjfw-rt")
			AC_SUBST(RUNTIME_RUNTIME_A, "runtime/runtime.a")
		fi

		AS_IF([test x"$enable_seluid24" = x"yes"], [
			AC_DEFINE(OF_SELUID24, 1,
				[Whether to use 24 bit selector UIDs])
		])

		AC_MSG_CHECKING(for exception type)

		])
		;;
	"Apple runtime")
		AC_DEFINE(OF_APPLE_RUNTIME, 1,
			[Whether we use the Apple ObjC runtime])

		AC_CHECK_LIB(objc, objc_msgSend, [
			LIBS="-lobjc $LIBS"
			AC_SUBST(RUNTIME_LIBS, "-lobjc")
		], [
			AC_MSG_ERROR([libobjc not found!])
		])
		;;
esac

AC_CHECK_FUNC(objc_constructInstance, [], [
	AC_SUBST(INSTANCE_M, "instance.m")
])

AC_CHECK_FUNC(objc_autoreleasePoolPush, [], [
	AC_SUBST(AUTORELEASE_M, "autorelease.m")
])

case "$host_os" in
	darwin*)
		AC_SUBST(LDFLAGS_REEXPORT, ["-Wl,-reexport-lobjfw"])
		AS_IF([test x"$objc_runtime" = x"Apple runtime"], [
			AC_SUBST(REEXPORT_LIBOBJC, ["-Wl,-reexport-lobjc"])
			AC_SUBST(REEXPORT_RUNTIME, ["-Wl,-reexport-lobjc"])
			AC_SUBST(WEAK_NSFOUNDATIONVERSIONNUMBER,
				["-Wl,-U,_NSFoundationVersionNumber"])
			LDFLAGS="$LDFLAGS -Wl,-U,_NSFoundationVersionNumber"
		])

		AS_IF([test x"$objc_runtime" = x"ObjFW runtime"], [
			AS_IF([test x"$exception_type" = x"DWARF"], [
				LDFLAGS="$LDFLAGS -Wl,-U,___gxx_personality_v0"
			])
			AS_IF([test x"$exception_type" = x"SjLj"], [
				LDFLAGS="$LDFLAGS -Wl,-U,___gxx_personality_sj0"
			])
			AC_SUBST(REEXPORT_RUNTIME, ["-Wl,-reexport-lobjfw-rt"])
		])

		AC_CHECK_HEADERS(sysdir.h)
		AC_CHECK_FUNCS(sysdir_start_search_path_enumeration)
		;;
esac