ship build: refix broken 'strict'

1 files changed, 2 insertions, 1 deletions

diff --git a/ship/build b/ship/build
index 730f72ee..bcb1f504 100755
--- a/ship/build
+++ b/ship/build
@@ -43,7 +43,8 @@ EOF
 ## usage: #@strict -> build_strict_mode \1
 build_strict_mode() { cat<<EOF
 $1a\\
-set -euf
+set -euf\\
+(set -o posix 2>/dev/null) && set -o posix
 EOF
 }