Дилян Палаузов <[email protected]> added the comment:
Having 'CFLAGS="-pipe -Werror -Wall -Wextra -O3 -fno-fat-lto-objects -flto"
CXXFLAGS="-pipe -Wall -Wextra -O3 -fno-fat-lto-objects -flto"
LDFLAGS="-Wl,-O1,-s -flto=12" ' in config.site and running "./configure" with
gcc8 prints:
checking for fchdir... no
checking for fsync... no
checking for fdatasync... no
and config.log has:
configure:11440: checking for fchdir
configure:11453: gcc -c -pipe -Werror -Wall -Wextra -O3 -fno-fat-lto-objects
-flto conftest.c >&5
conftest.c: In function 'main':
conftest.c:250:7: error: unused variable 'x' [-Werror=unused-variable]
void *x=fchdir
^
cc1: all warnings being treated as errors
configure:11453: $? = 1
configure: failed program was:
| /* confdefs.h */
...
| #define HAVE_DIRFD 1
| /* end confdefs.h. */
| #include <unistd.h>
| int
| main ()
| {
| void *x=fchdir
| ;
| return 0;
| }
configure:11460: result: no
----------
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<https://bugs.python.org/issue31748>
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