From e1166046e1f6d97d0efe28f96e692f2df790be6f Mon Sep 17 00:00:00 2001
From: John Troy <john@noxi.us>
Date: Mon, 9 Sep 2024 16:04:29 -0400
Subject: [PATCH] unix: fix grep syntax to work on non-GNU greps

---
 unix/mkerrors.sh | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/unix/mkerrors.sh b/unix/mkerrors.sh
index e14b766a32..ac54ecaba0 100755
--- a/unix/mkerrors.sh
+++ b/unix/mkerrors.sh
@@ -656,7 +656,7 @@ errors=$(
 signals=$(
 	echo '#include <signal.h>' | $CC -x c - -E -dM $ccflags |
 	awk '$1=="#define" && $2 ~ /^SIG[A-Z0-9]+$/ { print $2 }' |
-	grep -v 'SIGSTKSIZE\|SIGSTKSZ\|SIGRT\|SIGMAX64' |
+	grep -E -v '(SIGSTKSIZE|SIGSTKSZ|SIGRT|SIGMAX64)' |
 	sort
 )
 
@@ -666,7 +666,7 @@ echo '#include <errno.h>' | $CC -x c - -E -dM $ccflags |
 	sort >_error.grep
 echo '#include <signal.h>' | $CC -x c - -E -dM $ccflags |
 	awk '$1=="#define" && $2 ~ /^SIG[A-Z0-9]+$/ { print "^\t" $2 "[ \t]*=" }' |
-	grep -v 'SIGSTKSIZE\|SIGSTKSZ\|SIGRT\|SIGMAX64' |
+	grep -E -v '(SIGSTKSIZE|SIGSTKSZ|SIGRT|SIGMAX64)' |
 	sort >_signal.grep
 
 echo '// mkerrors.sh' "$@"