Updated patch below. Meanwhile, I'll disable the public-submodule-commit test in the projects I work on -- I don't think it is appropriate to run it on every 'make check' invocation. Disable it by putting this in cfg.mk:
submodule-checks =
gl_public_submodule_commit =
/Simon
diff --git a/top/maint.mk b/top/maint.mk
index c1fdf9ca2c..1982833e91 100644
--- a/top/maint.mk
+++ b/top/maint.mk
@@ -1493,10 +1493,13 @@ submodule-checks ?= no-submodule-changes
public-submodule-commit
# Ensure that each sub-module commit we're using is public.
# Without this, it is too easy to tag and release code that
# cannot be built from a fresh clone.
+gl_seed ?= d146c864e8d8cc82e96d722337253dd5a3a803b8
.PHONY: public-submodule-commit
public-submodule-commit:
$(AM_V_GEN)if test -d $(srcdir)/.git \
- && git --version >/dev/null 2>&1; then \
+ && git --version >/dev/null 2>&1 \
+ && { cd $(gnulib_dir) && \
+ git cat-file -e $(gl_seed); }; then \
cd $(srcdir) && \
git submodule --quiet foreach \
'test "$$(git rev-parse "$$sha1")" \
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