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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Check compatibility with macOS deployment target during JIT builds","articleBody":"As with https://github.com/python/cpython/issues/100384, we should ensure that symbols use is guarded or the interpreter will crash at runtime on older macOS platforms.\n\nThere are a couple violations for a target of 10.15 (which we agreed on in https://github.com/python/cpython/pull/128155):\n\n```\ncpython-3.14\u003e Python/jit.c:530:5: error: 'pthread_jit_write_protect_np' is only available on macOS 11.0 or newer [-Werror,-Wunguarded-availability-new]\ncpython-3.14\u003e   530 |     pthread_jit_write_protect_np(0);\ncpython-3.14\u003e       |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~\ncpython-3.14\u003e /Applications/Xcode_15.2.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX14.2.sdk/usr/include/pthread.h:588:6: note: 'pthread_jit_write_protect_np' has been marked as being introduced in macOS 11.0 here, but the deployment target is macOS 10.15.0\ncpython-3.14\u003e   588 | void pthread_jit_write_protect_np(int enabled);\ncpython-3.14\u003e       |      ^\ncpython-3.14\u003e Python/jit.c:530:5: note: enclose 'pthread_jit_write_protect_np' in a __builtin_available check to silence this warning\ncpython-3.14\u003e   530 |     pthread_jit_write_protect_np(0);\ncpython-3.14\u003e       |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~\ncpython-3.14\u003e Python/jit.c:570:5: error: 'pthread_jit_write_protect_np' is only available on macOS 11.0 or newer [-Werror,-Wunguarded-availability-new]\ncpython-3.14\u003e   570 |     pthread_jit_write_protect_np(1);\ncpython-3.14\u003e       |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~\ncpython-3.14\u003e /Applications/Xcode_15.2.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX14.2.sdk/usr/include/pthread.h:588:6: note: 'pthread_jit_write_protect_np' has been marked as being introduced in macOS 11.0 here, but the deployment target is macOS 10.15.0\ncpython-3.14\u003e   588 | void pthread_jit_write_protect_np(int enabled);\ncpython-3.14\u003e       |      ^\ncpython-3.14\u003e Python/jit.c:570:5: note: enclose 'pthread_jit_write_protect_np' in a __builtin_available check to silence this warning\ncpython-3.14\u003e   570 |     pthread_jit_write_protect_np(1);\ncpython-3.14\u003e       |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~\ncpython-3.14\u003e 2 errors generated.\n```\n\n\u003c!-- gh-linked-prs --\u003e\n### Linked PRs\n* gh-134292\n* gh-137211\n* gh-137701\n\u003c!-- /gh-linked-prs --\u003e\n","author":{"url":"https://github.com/zanieb","@type":"Person","name":"zanieb"},"datePublished":"2025-05-19T21:52:49.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":1},"url":"https://github.com/134291/cpython/issues/134291"}