Corinna Vinschen 5f66c2c756 Cygwin: Makefile.in: add -fno-builtin-execve CFLAG when building exec.o
gcc-9.2.0 has an execve builtin which uses the nothrow attribute.
This results in an error when aliasing execve to _execve for newlib:

exec.cc:88:23: error: 'int _execve(const char*, char* const*, char*
const*)' specifies less restrictive attribute than its target
'int execve(const char*, char* const*, char* const*)': 'nothrow'
[-Werror=missing-attributes]
   88 | EXPORT_ALIAS (execve, _execve) /* For newlib */

Add the -fno-builtin-execve CFLAGS when building exec.o to override
the gcc builtin.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2020-02-26 17:03:31 +01:00
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