Author: marshall
Date: Wed Nov 2 12:56:05 2016
New Revision: 285845
URL: http://llvm.org/viewvc/llvm-project?rev=285845&view=rev
Log:
Add support for old versions of MacOS to libunwind. Fixes PR22203. Thanks to
Jeremy for the bug report and the patch.
Modified:
libunwind/trunk/include/libunwind.h
Modified: libunwind/trunk/include/libunwind.h
URL:
http://llvm.org/viewvc/llvm-project/libunwind/trunk/include/libunwind.h?rev=285845&r1=285844&r2=285845&view=diff
==============================================================================
--- libunwind/trunk/include/libunwind.h (original)
+++ libunwind/trunk/include/libunwind.h Wed Nov 2 12:56:05 2016
@@ -20,12 +20,26 @@
#include <stddef.h>
#ifdef __APPLE__
- #include <Availability.h>
- #ifdef __arm__
- #define LIBUNWIND_AVAIL __attribute__((unavailable))
+ #if __clang__
+ #if __has_include(<Availability.h>)
+ #include <Availability.h>
+ #endif
+ #elif __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ >= 1050
+ #include <Availability.h>
+ #endif
+
+ #ifdef __arm__
+ #define LIBUNWIND_AVAIL __attribute__((unavailable))
+ #elif defined(__OSX_AVAILABLE_STARTING)
+ #define LIBUNWIND_AVAIL __OSX_AVAILABLE_STARTING(__MAC_10_6, __IPHONE_5_0)
+ #else
+ #include <AvailabilityMacros.h>
+ #ifdef AVAILABLE_MAC_OS_X_VERSION_10_6_AND_LATER
+ #define LIBUNWIND_AVAIL AVAILABLE_MAC_OS_X_VERSION_10_6_AND_LATER
#else
- #define LIBUNWIND_AVAIL __OSX_AVAILABLE_STARTING(__MAC_10_6,
__IPHONE_5_0)
+ #define LIBUNWIND_AVAIL __attribute__((unavailable))
#endif
+ #endif
#else
#define LIBUNWIND_AVAIL
#endif
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