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BUG: threads.h existence test requires GLIBC > 2.12. #18180

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merged 5 commits into from
Jan 19, 2021
Merged

BUG: threads.h existence test requires GLIBC > 2.12. #18180

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ce91dcb
BUG: Require glibc 2.28+ for threads.h. Closes #18179
pearu Jan 17, 2021
e9eecc4
BUG: Require C11 for threads.h. Closes #18179
pearu Jan 18, 2021
072ed01
Check for glibc > 2.12 when __STDC_NO_THREADS__ is not defined.
pearu Jan 19, 2021
dae55c3
defined(__STDC_NO_THREADS__) can be trusted only when using glibc > 2.12
pearu Jan 19, 2021
5fe6159
Add __GLIBC__ defined check.
pearu Jan 19, 2021
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7 changes: 6 additions & 1 deletion numpy/f2py/cfuncs.py
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Original file line number Diff line number Diff line change
Expand Up @@ -549,7 +549,12 @@
#define F2PY_THREAD_LOCAL_DECL __declspec(thread)
#elif defined(__STDC_VERSION__) \\
&& (__STDC_VERSION__ >= 201112L) \\
&& !defined(__STDC_NO_THREADS__)
&& !defined(__STDC_NO_THREADS__) \\
&& (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ > 12))
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/* __STDC_NO_THREADS__ was first defined in a maintenance release of glibc 2.12,
see https://lists.gnu.org/archive/html/commit-hurd/2012-07/msg00180.html,
so `!defined(__STDC_NO_THREADS__)` may give false positive for the existence
of `threads.h` when using an older release of glibc 2.12 */
#include <threads.h>
#define F2PY_THREAD_LOCAL_DECL thread_local
#elif defined(__GNUC__) \\
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