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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 2010-02-24 12:01:09 +01:00
parent 083b901eb3
commit 0f88dade23
2 changed files with 4 additions and 2 deletions

2
autogen.sh

@ -65,7 +65,7 @@ fi
# Ensure that whenever we pull in a gnulib update or otherwise change to a
# different version (i.e., when switching branches), we also rerun ./bootstrap.
curr_status=.git-module-status
t=$(git submodule status)
t=$(git submodule status|sed 's/^[ +-]//;s/ .*//')
if test "$t" = "$(cat $curr_status 2>/dev/null)"; then
: # good, it's up to date, all we need is autoreconf
autoreconf -if

4
cfg.mk

@ -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)"; \