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build: make git submodule checking more reliable

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* cfg.mk (_curr_status): Accommodate leading "+" or "-" in the output
of git submodule status.
* autogen.sh: Likewise.
This commit is contained in:
Jim Meyering
2010-02-25 13:35:03 +01:00
parent 083b901eb3
commit 0f88dade23
2 changed files with 4 additions and 2 deletions
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cfg.mk
+3 -1
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@@ -262,7 +262,9 @@ ifeq (0,$(MAKELEVEL))
# submodule name. Contrast these:
# -b653eda3ac4864de205419d9f41eec267cb89eeb .gnulib
# b653eda3ac4864de205419d9f41eec267cb89eeb .gnulib (v0.0-2286-gb653eda)
_submodule_hash = sed 's/.//;s/ .*//'
# $ cat .git-module-status
# b653eda3ac4864de205419d9f41eec267cb89eeb
_submodule_hash = sed 's/^[ +-]//;s/ .*//'
_update_required := $(shell \
actual=$$(git submodule status | $(_submodule_hash)); \
stamp="$$($(_submodule_hash) $(_curr_status) 2>/dev/null)"; \