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osdep: Avoid using Clang-specific __builtin_available()
Remove the Clang specific __builtin_available() to allow building with GCC, otherwise we get: include/qemu/osdep.h: In function 'qemu_thread_jit_write': include/qemu/osdep.h:787:9: warning: implicit declaration of function '__builtin_available'; did you mean '__builtin_scalbl'? [-Wimplicit-function-declaration] 787 | if (__builtin_available(macOS 11.0, *)) { | ^~~~~~~~~~~~~~~~~~~ | __builtin_scalbl include/qemu/osdep.h:787:9: warning: nested extern declaration of '__builtin_available' [-Wnested-externs] include/qemu/osdep.h:787:29: error: 'macOS' undeclared (first use in this function) 787 | if (__builtin_available(macOS 11.0, *)) { | ^~~~~ include/qemu/osdep.h:787:29: note: each undeclared identifier is reported only once for each function it appears in include/qemu/osdep.h:787:34: error: expected ')' before numeric constant 787 | if (__builtin_available(macOS 11.0, *)) { | ~ ^~~~~ | ) Beside, on macOS Catalina we get 2254 times: include/qemu/osdep.h:780:5: warning: 'pthread_jit_write_protect_np' is only available on macOS 11.0 or newer [-Wunguarded-availability-new] pthread_jit_write_protect_np(true); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~ Fix by using a stricker toolchain version low range, replacing MAC_OS_X_VERSION_MAX_ALLOWED by MAC_OS_X_VERSION_MIN_REQUIRED. Reviewed-by: Akihiko Odaki <akihiko.odaki@gmail.com> Tested-by: Akihiko Odaki <akihiko.odaki@gmail.com> Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
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@ -624,19 +624,15 @@ size_t qemu_get_host_physmem(void);
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* for the current thread.
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*/
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#if defined(MAC_OS_VERSION_11_0) && \
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MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_VERSION_11_0
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MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_VERSION_11_0
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static inline void qemu_thread_jit_execute(void)
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{
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if (__builtin_available(macOS 11.0, *)) {
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pthread_jit_write_protect_np(true);
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}
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pthread_jit_write_protect_np(true);
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}
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static inline void qemu_thread_jit_write(void)
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{
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if (__builtin_available(macOS 11.0, *)) {
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pthread_jit_write_protect_np(false);
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}
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pthread_jit_write_protect_np(false);
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}
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#else
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static inline void qemu_thread_jit_write(void) {}
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