ObjFW  Diff

AC_INIT(ObjFW, 0.5.4, js@webkeks.org)
AC_CONFIG_SRCDIR(src)

AS_IF([test x"$host" = x"psp"], [
	OBJCFLAGS="-G0 $OBJCFLAGS"
	LIBS="$LIBS -lpspdebug -lpspdisplay -lpspge -lpspctrl -lpspsdk -lc"
	LIBS="$LIBS -lpspnet -lpspnet_inet -lpspnet_apctl -lpspnet_resolver"
	LIBS="$LIBS -lpsputility -lpspuser -lpspkernel"

AX_CHECK_COMPILER_FLAGS(-std=gnu99, [OBJCFLAGS="$OBJCFLAGS -std=gnu99"])
AX_CHECK_COMPILER_FLAGS(-pipe, [OBJCFLAGS="$OBJCFLAGS -pipe"])
AX_CHECK_COMPILER_FLAGS(-fno-common, [OBJCFLAGS="$OBJCFLAGS -fno-common"])
AX_CHECK_COMPILER_FLAGS(-fno-constant-cfstrings, [
	NO_CONST_CFSTRINGS="-fno-constant-cfstrings"
	OBJCFLAGS="$OBJCFLAGS -fno-constant-cfstrings"
])
AX_CHECK_COMPILER_FLAGS(-Wshorten-64-to-32,
	[OBJCFLAGS="$OBJCFLAGS -Wshorten-64-to-32"])
AC_SUBST(NO_CONST_CFSTRINGS)

AC_MSG_CHECKING(whether Objective C compiler supports fast enumeration)
AC_TRY_COMPILE([
	@protocol OFFastEnumeration
	- (int)countByEnumeratingWithState: (void*)state
				   objects: (id*)objects

])

AC_MSG_CHECKING(whether Objective C compiler supports blocks)
old_OBJCFLAGS="$OBJCFLAGS"
OBJCFLAGS="$OBJCFLAGS -fblocks"
AC_TRY_COMPILE([], [
	int (^foo)(int bar);
	foo = ^ (int bar) { return 0; }
], [
	AC_DEFINE(OF_HAVE_BLOCKS, 1, [Compiler support for blocks])
	AC_SUBST(BLOCKS_FLAGS, "-fblocks")
	AC_SUBST(OFBLOCKTESTS_M, "OFBlockTests.m")
	AC_MSG_RESULT(yes)
], [
	AC_MSG_RESULT(no)
	OBJCFLAGS="$old_OBJCFLAGS"
])

AC_CHECK_HEADERS([objfw-rt.h objc/objc.h])

test x"$ac_cv_header_objfw_rt_h" = x"yes" && objc_runtime="ObjFW-RT"

AC_MSG_CHECKING(which Objective C runtime we use)
AS_IF([test x"$ac_cv_header_objc_objc_h" = x"yes"], [
	AC_EGREP_CPP(yes, [
		#import <objc/objc.h>
		#ifdef __GNU_LIBOBJC__
		yes
		#endif
	], [

		], [
			test x"$objc_runtime" = x"" && objc_runtime="old GNU"
		], [
			objc_runtime="Apple"
		])
	])
])
AC_MSG_RESULT($objc_runtime)


case $objc_runtime in
	ObjFW-RT)
		AC_DEFINE(OF_OBJFW_RUNTIME, 1,
			[Whether we use the ObjFW runtime])
		AC_SUBST(GNU_RUNTIME, "-fgnu-runtime")
		OBJCFLAGS="$OBJCFLAGS -fgnu-runtime"

		AC_CHECK_LIB(objfw-rt, objc_msg_lookup, [
			LIBS="-lobjfw-rt $LIBS"
		], [
			AC_MSG_ERROR([libobjfw-rt not found!])
		])
		;;
	Apple)
		AC_DEFINE(OF_APPLE_RUNTIME, 1,
			[Whether we use the Apple ObjC runtime])

		AC_CHECK_LIB(objc, objc_msgSend, [
			LIBS="-lobjc $LIBS"
		], [
			AC_MSG_ERROR([libobjc not found!])
		])
		;;
	GNU)
		AC_DEFINE(OF_GNU_RUNTIME, 1,
			[Whether we use the GNU ObjC runtime])

		AC_CHECK_LIB(objc, objc_msg_lookup, [
			LIBS="-lobjc $LIBS"
		], [
			AC_MSG_ERROR([libobjc not found!])
		])
		;;
	"old GNU")
		AC_DEFINE(OF_OLD_GNU_RUNTIME, 1,
			[Whether we use the old GNU ObjC runtime])

		AC_CHECK_LIB(objc, objc_msg_lookup, [
			LIBS="-lobjc $LIBS"
		], [
			AC_MSG_ERROR([libobjc not found!])
		])
		;;
	*)
		AC_MSG_RESULT(none)
		AC_MSG_ERROR(No ObjC runtime found! Please install ObjFW-RT!)
		;;
esac


AC_CHECK_FUNC(objc_getProperty,, [
	AC_DEFINE(NEED_OBJC_PROPERTIES_INIT, 1,
		[Whether objc_properties_init needs to be called])
	AC_SUBST(OBJC_PROPERTIES_M, "objc_properties.m")
])

			*)
				have_threadsafe_getaddrinfo="unknown"
				;;
		esac

		AS_IF([test x"$have_threadsafe_getaddrinfo" = x"unknown"], [
			AC_EGREP_CPP(yes, [
				#ifndef _WIN32
				# include <sys/types.h>
				# include <sys/socket.h>
				# include <netdb.h>
				#else
				# define _WIN32_WINNT 0x0501
				# include <windows.h>
				# include <ws2tcpip.h>
				#endif

				#ifdef h_errno
				yes
				#end
			], [
				have_threadsafe_getaddrinfo="yes"
			], [
				have_threadsafe_getaddrinfo="no"

AS_IF([test x"$objc_runtime" = x"Apple"], [
	AC_CHECK_HEADER(Foundation/NSObject.h, [
		AC_SUBST(FOUNDATION_COMPAT_M, "foundation-compat.m")
	])
])

AS_IF([test x"$GOBJC" = x"yes"], [
	OBJCFLAGS="$OBJCFLAGS -Wwrite-strings -Wpointer-arith -Werror"


	AC_MSG_CHECKING(whether gcc has bug objc/27438)
	AC_TRY_COMPILE([
		@interface OFConstantString
		{
			struct objc_class *isa;
			const char *string;
			unsigned long size;
		}
		@end

		void *_OFConstantStringClassReference;
	], [
		OFConstantString *test = @"";
		(void)test; /* Get rid of unused variable warning */
	], [
		AC_MSG_RESULT(no)
	], [
		AC_MSG_RESULT([yes, adding -Wno-unused-variable])
		OBJCFLAGS="$OBJCFLAGS -Wno-unused-variable"
		AC_SUBST(NO_WARN_UNUSED, "-Wno-unused-variable")
	])

	AC_MSG_CHECKING(whether we need -Wno-strict-aliasing due to gcc bugs)
	AC_TRY_COMPILE([
		@interface Foo
		{
			struct objc_class *isa;
		}
		@end

		static struct {
			struct objc_class *isa;
		} object;
	], [
		Foo *test = (Foo*)&object;
		(void)test; /* Get rid of unused variable warning */
	], [
		AC_MSG_RESULT(no)
	], [
		AC_MSG_RESULT(yes)
		OBJCFLAGS="$OBJCFLAGS -Wno-strict-aliasing"
	])

	old_OBJCFLAGS="$OBJCFLAGS"
	OBJCFLAGS="$OBJCFLAGS -Wcast-align"
	AC_MSG_CHECKING(whether -Wcast-align is buggy)
	AC_TRY_COMPILE([
		@interface Foo
		{
			struct objc_class *isa;
		}
		@end

		@implementation Foo
		- (void)foo
		{
			struct objc_class *c = isa;
			(void)c;
		}
		@end
	], [
	], [
		AC_MSG_RESULT(no)
	], [
		AC_MSG_RESULT(yes)
		OBJCFLAGS="$old_OBJCFLAGS"
	])
])

AS_IF([test x"$cross_compiling" = x"yes"], [
	AC_SUBST(BIN_PREFIX, "$host-")

	case "$host" in
		*-*-mingw*)