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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Mimalloc header is not installed","articleBody":"# Bug report\r\n\r\n### Bug description:\r\n\r\nMimalloc is introduced in https://github.com/python/cpython/pull/109914.\r\nThis will cause a header not found when building any extension that includes a `pycore_*.h` header as:\r\n```\r\n[build] In file included from /Users/yyc/repo/py/install/include/python3.13d/internal/pycore_long.h:13:\r\n[build] In file included from /Users/yyc/repo/py/install/include/python3.13d/internal/pycore_runtime.h:17:\r\n[build] In file included from /Users/yyc/repo/py/install/include/python3.13d/internal/pycore_interp.h:30:\r\n[build] /Users/yyc/repo/py/install/include/python3.13d/internal/pycore_mimalloc.h:39:10: fatal error: 'mimalloc.h' file not found\r\n[build] #include \"mimalloc.h\"\r\n[build]          ^~~~~~~~~~~~\r\n[build] 1 error generated.\r\n```\r\nSee following PR for detail.\r\n\r\n### CPython versions tested on:\r\n\r\n3.13, CPython main branch\r\n\r\n### Operating systems tested on:\r\n\r\nLinux, macOS\r\n\r\n\u003c!-- gh-linked-prs --\u003e\r\n### Linked PRs\r\n* gh-116985\r\n* gh-118808\n* gh-118866\n\u003c!-- /gh-linked-prs --\u003e\r\n","author":{"url":"https://github.com/oraluben","@type":"Person","name":"oraluben"},"datePublished":"2024-03-19T09:26:09.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":10},"url":"https://github.com/116984/cpython/issues/116984"}