From f73b4815e527627674cf8c052d5d37d9da5529c6 Mon Sep 17 00:00:00 2001 From: Isuru Fernando Date: Mon, 25 Jan 2021 03:28:08 -0600 Subject: [PATCH 18/25] Make dyld search work with SYSTEM_VERSION_COMPAT=1 In macOS Big Sur, if the executable was compiled with `MACOSX_DEPLOYMENT_TARGET=10.15` or below, then SYSTEM_VERSION_COMPAT=1 is the default which means that Big Sur reports itself as 10.16 which means that `__builtin_available(macOS 11.0)` will not be triggered. This can be observed by using the python 3.9.1 universal2 installer and using it on x86_64 Big Sur or with Rossetta 2 on arm64 Big Sur. (Not an issue with native arm64 as that part is compiled with `MACOSX_DEPLOYMENT_TARGET=11.0`) --- Modules/_ctypes/callproc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/Modules/_ctypes/callproc.c b/Modules/_ctypes/callproc.c index e009661d4a..708d866673 100644 --- a/Modules/_ctypes/callproc.c +++ b/Modules/_ctypes/callproc.c @@ -1448,7 +1448,7 @@ copy_com_pointer(PyObject *self, PyObject *args) #ifdef __APPLE__ #ifdef HAVE_DYLD_SHARED_CACHE_CONTAINS_PATH #define HAVE_DYLD_SHARED_CACHE_CONTAINS_PATH_RUNTIME \ - __builtin_available(macOS 11.0, iOS 14.0, tvOS 14.0, watchOS 7.0, *) + __builtin_available(macOS 10.16, iOS 14.0, tvOS 14.0, watchOS 7.0, *) #else // Support the deprecated case of compiling on an older macOS version static void *libsystem_b_handle;