diff options
| -rw-r--r-- | usr.bin/make/main.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/usr.bin/make/main.c b/usr.bin/make/main.c index 9fccf969df2d..497eb779e3a0 100644 --- a/usr.bin/make/main.c +++ b/usr.bin/make/main.c @@ -410,6 +410,10 @@ chdir_verify_path(char *path, char *obpath) return 0; } +void +catch_child(int sig) +{ +} /*- * main -- @@ -452,6 +456,22 @@ main(int argc, char **argv) /* avoid faults on read-only strings */ static char syspath[] = _PATH_DEFSYSPATH; + { + /* + * Catch SIGCHLD so that we get kicked out of select() when we + * need to look at a child. This is only known to matter for the + * -j case (perhaps without -P). + * + * XXX this is intentionally misplaced. + */ + struct sigaction sa; + + sigemptyset(&sa.sa_mask); + sa.sa_flags = SA_RESTART | SA_NOCLDSTOP; + sa.sa_handler = catch_child; + sigaction(SIGCHLD, &sa, NULL); + } + #ifdef WANT_ENV_MKLVL if ((iMkLvl = szMkLvl ? atoi(szMkLvl) : 0) < 0) { iMkLvl = 0; |