Makefile.in: Add the shellcheck target

Run shellcheck on the build.sh and the build_matrix.sh scripts.
(using 'gcc' format: GCC compatible output. See the shellcheck man page)

[skip ci]

(cherry picked from commit 657d672cb672b80d4cd7a18a6f746968d9d44807)

diff --git a/Makefile.in b/Makefile.in
index f7589dd8a4057056d49551b7f3f10faf83c33ce6..01952c88c057fc33fb7917ac168d4189c9cec193 100644 (file)
--- a/Makefile.in
+++ b/Makefile.in
@@ -475,3 +475,6 @@ testlist:
 
 depend:
        $(MKDEP) -c "$(CC)" -m "$(DEPENDENCY_CFLAG)" -s "$(srcdir)" $(DEFS) $(INCLS) $(SRC) $(LIBNETDISSECT_SRC)
+
+shellcheck:
+       shellcheck -f gcc build.sh build_matrix.sh