build: Restore the ability to run "make check".

* cfg.mk (gl_public_submodule_commit): Define to empty.

diff --git a/cfg.mk b/cfg.mk
index 71cebca2d6320ba210bb83f268fd75d205f0aa4d..22bc6eee8cf740bdc790d258cd1b708652bc85db 100644 (file)
--- a/cfg.mk
+++ b/cfg.mk
@@ -3,3 +3,7 @@ SED ?= sed
 update-copyright-env = \
   UPDATE_COPYRIGHT_USE_INTERVALS=1 \
   UPDATE_COPYRIGHT_MAX_LINE_LENGTH=79
+
+# Disable a nonsensical maint.mk rule.
+# See <https://lists.gnu.org/archive/html/bug-gnulib/2022-09/msg00074.html>.
+gl_public_submodule_commit =