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-rw-r--r--base/compat_execinfo.h34
1 files changed, 19 insertions, 15 deletions
diff --git a/base/compat_execinfo.h b/base/compat_execinfo.h
index 472fa5e..c615cf2 100644
--- a/base/compat_execinfo.h
+++ b/base/compat_execinfo.h
@@ -1,29 +1,33 @@
// Copyright (c) 2006-2009 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
-//
-// A file you can include instead of <execinfo.h> if your project might have
-// been compiled with our SUPPORT_MACOSX_10_4 flag defined.
-// If SUPPORT_MACOSX_10_4 is not defined it just includes execinfo.h as normal,
-// otherwise it defines the symbols itself as weak linked imports, which enables
-// launching on 10.4 where they are not defined.
+
+// A file you can include instead of <execinfo.h> if your project might need
+// to run on Mac OS X 10.4.
#ifndef BASE_COMPAT_EXECINFO_H
#define BASE_COMPAT_EXECINFO_H
-#ifdef SUPPORT_MACOSX_10_4
+#include "build/build_config.h"
+
+#if defined(OS_MACOSX)
+#include <AvailabilityMacros.h>
+#endif
+
+#if defined(OS_MACOSX) && MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_5
// Manually define these here as weak imports, rather than including execinfo.h.
// This lets us launch on 10.4 which does not have these calls.
extern "C" {
- extern int backtrace(void**, int) __attribute__((weak_import));
- extern char** backtrace_symbols(void* const*, int)
- __attribute__((weak_import));
- extern void backtrace_symbols_fd(void* const*, int, int)
- __attribute__((weak_import));
-}
+
+extern int backtrace(void**, int) __attribute__((weak_import));
+extern char** backtrace_symbols(void* const*, int)
+ __attribute__((weak_import));
+extern void backtrace_symbols_fd(void* const*, int, int)
+ __attribute__((weak_import));
+
+} // extern "C"
#else
#include <execinfo.h>
#endif
-#endif // BASE_COMPAT_EXECINFO_H
-
+#endif // BASE_COMPAT_EXECINFO_H