cross-pkg-config: allow basic options for $1

Tools sometimes probe pkg-config to see if it itself works.  Allow
those basic options through.  We specifically don't parse the full
command line to keep the code simple, faster, and to avoid dealing
with ugly edge cases (like `pkg-config -- --help`).

Closes: https://bugs.gentoo.org/830840
Reported-by: Alexandra Parker <alex.iris.parker@gmail.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>

1 files changed, 11 insertions, 0 deletions

diff --git a/wrappers/cross-pkg-config b/wrappers/cross-pkg-config
index d51edd2..62f0dfa 100755
--- a/wrappers/cross-pkg-config
+++ b/wrappers/cross-pkg-config
@@ -21,6 +21,17 @@ error() {
 }
 
 #
+# Allow very basic checks.  This is not very sophisticated, but should get the
+# job done, practically speaking.
+#
+
+case $1 in
+--about|--help|--version)
+  exec pkg-config "$@"
+  ;;
+esac
+
+#
 # Sanity/distro checks
 #