ObjFW  Diff

*)
	potential_compilers="clang egcc gcc"
	;;
esac
AC_PROG_OBJC($potential_compilers)
AC_PROG_OBJCPP
AC_PROG_EGREP
AC_PROG_AWK
AC_PROG_LN_S

BUILDSYS_CHECK_IOS

AC_ARG_WITH(wii,
	AS_HELP_STRING([--with-wii], [build for Wii]))
AS_IF([test x"$with_wii" = x"yes"], [

			@try {
				foo();
			} @finally {
				foo();
			}
		])
	], [
		AS_IF([tr -dc "[[:print:]]" <conftest.$ac_objext | \
		    $EGREP __gnu_objc_personality_v0 >/dev/null], [
			exception_type="DWARF"
		exception_type="$($AWK '
		])
		AS_IF([tr -dc "[[:print:]]" <conftest.$ac_objext | \
		    $EGREP __gnu_objc_personality_sj0 >/dev/null], [
			exception_type="SjLj"
		    /__gnu_objc_personality_v0/ { print "DWARF" }
		    /__gnu_objc_personality_sj0/ { print "SjLj" }
		])
		AS_IF([tr -dc "[[:print:]]" <conftest.$ac_objext | \
		    $EGREP __gnu_objc_personality_seh0 >/dev/null], [
			exception_type="SEH"
		    /__gnu_objc_personality_seh0/ { print "SEH" }' \
		    conftest.$ac_objext)"
		])

		case "$exception_type" in
		DWARF)
			AC_DEFINE(HAVE_DWARF_EXCEPTIONS, 1,
				[Whether DWARF exceptions are used])
			raise_exception="_Unwind_RaiseException"
			;;

AC_CHECK_SIZEOF(float)
AC_CHECK_SIZEOF(double)
AS_IF([test x"$ac_cv_sizeof_float" != x"4" -o x"$ac_cv_sizeof_double" != x"8"],
	[AC_MSG_ERROR(
		[Floating point implementation does not conform to IEEE 754!])])

AC_MSG_CHECKING(for floating point endianess)
fp_endianess="unknown"
AS_IF([test x"$ac_cv_c_bigendian" != x"universal"], [
	AC_COMPILE_IFELSE([
		AC_LANG_SOURCE([
			double endianess = 2.993700760838795055656993580068609688772747263874402942272934826871811872228512759832626847251963763755836687759498519784550143745834860002945223766052808125982053455555265216112722718870586961456110693379343178124592311441022662940307099598578775368547768968914916965731708568179631324904813506101190853720749196062963892799499230635163056742330563321122389331703618066046034494287335316842529021563862331183541255013987734473643350285400060357711238514186776429325214739886098119655678483017894951556639821088508565036657794343031121375178126860889964700274558728491825977274341798997758923017217660272136611938897932105874133412726223468780517578125e-259;
		])
	], [
		fp_endianess="$($AWK '
		    /BigEnd/ { print "big endian" }
		AS_IF([tr -dc "[[:print:]]" <conftest.$ac_objext | \
		    $EGREP BigEnd >/dev/null], [
		    /dnEgiB/ { print "little endian" }' conftest.$ac_objext)"

		case "$fp_endianess" in
		"big endian")
			AC_DEFINE(OF_FLOAT_BIG_ENDIAN, 1,
				[Whether floats are big endian])
			;;
			fp_endianess="big endian"
		"little endian")
		], [
			AS_IF([tr -dc "[[:print:]]" <conftest.$ac_objext | \
			    $EGREP dnEgiB >/dev/null], [
				fp_endianess="little endian"
			;;
		*)
			fp_endianess="unknown";
			])
		])
			;;
		esac
	])
], [
	fp_endianess="universal"
])
AC_MSG_RESULT($fp_endianess)
AS_IF([test x"$fp_endianess" = x"unknown"], [
	AC_MSG_ERROR(