MacOSX 10.8 ("Mountain Lion") defaults to trying to use automated reference counting on certain objects. This means that the system header files will use some Objective C syntax constructs even when compiling pure C, which confuses mainline gcc. Suppress this by setting OS_OBJECT_USE_OBJC=0. This avoids a compile error like this:
In file included from /System/Library/Frameworks/Foundation.framework/Headers/NSObject.h:5:0, from /usr/include/os/object.h:74, from /usr/include/dispatch/dispatch.h:48, from /System/Library/Frameworks/IOKit.framework/Headers/IOKitLib.h:56, from block/raw-posix.c:35: /System/Library/Frameworks/Foundation.framework/Headers/NSObjCRuntime.h:409:1: error: stray ‘@’ in program [with a large number of further run-on errors] Signed-off-by: Peter Maydell <peter.mayd...@linaro.org> --- configure | 3 +++ 1 file changed, 3 insertions(+) diff --git a/configure b/configure index f0dbc03..be4a2bb 100755 --- a/configure +++ b/configure @@ -452,6 +452,9 @@ Darwin) audio_possible_drivers="coreaudio sdl fmod" LDFLAGS="-framework CoreFoundation -framework IOKit $LDFLAGS" libs_softmmu="-F/System/Library/Frameworks -framework Cocoa -framework IOKit $libs_softmmu" + # Disable attempts to use ObjectiveC features in os/object.h since they + # won't work when we're compiling with gcc as a C compiler. + QEMU_CFLAGS="-DOS_OBJECT_USE_OBJC=0 $QEMU_CFLAGS" ;; SunOS) solaris="yes" -- 1.7.11.4