casa-mp-base

https://trac.macports.org/ticket/49272

https://bugs.python.org/issue24844

​

Compiling python fails in Xcode 4 (clang < 3.3) where existence of 'atomic'

is detected by configure, but it is not fully functional.

​

--- configure.orig

+++ configure

@@ -16240,6 +16242,24 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext

     volatile int val = 1;

     int main() {

       __atomic_load_n(&val, __ATOMIC_SEQ_CST);

+

+      // https://bugs.python.org/issue24844

+      #define VERSION_CHECK(cc_major, cc_minor, req_major, req_minor) \

+          ((cc_major) > (req_major) || \

+          (cc_major) == (req_major) && (cc_minor) >= (req_minor))

+      #if defined(__clang__)

+          #if defined(__apple_build_version__)

+              // either one test or the other should work

+              // #if __apple_build_version__ < 5000000

+              #if !VERSION_CHECK(__clang_major__, __clang_minor__, 5, 0)

+                  #error

+              #endif

+          // not sure if this is 3.3 or 3.4

+          #elif !VERSION_CHECK(__clang_major__, __clang_minor__, 3, 3)

+              #error

+          #endif

+      #endif

+

       return 0;

     }