This fixes
gcc-lib/libc+gnu.c: At top level:
gcc-lib/libc+gnu.c:2694:1: error: conflicting types for ‘execve’
execve (char const *file_name, char **argv, char **env)
^~~~~~
In file included from gcc-lib/libc+gnu.c:492:0:
include/unistd.h:66:5: note: previous declaration of ‘execve’ was here
int execve (char const *file, char *const argv[], char *const env[]);
^~~~~~
This reverts commit 828c27a073.
d73f30e641