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authorGlenn Morris <rgm@gnu.org>2015-05-06 21:58:58 -0400
committerGlenn Morris <rgm@gnu.org>2015-05-06 21:58:58 -0400
commitadb69ddff05ce770261e03d249f2e31e75c098af (patch)
tree9723ce635e48b1da50b710c88cd4aded816b59a6
parent09b872dff4242964daca072472ddfc1dd47cbbc1 (diff)
downloademacs-adb69ddff05ce770261e03d249f2e31e75c098af.tar.gz
Avoid unnecessary bumping of Makefile.in's timestamp.
* Makefile.in (gen_origin): Move to gitlog-to-emacslog. (emacslog): New variable. (ChangeLog): Use $emacslog. Don't pass $gen_origin. (unchanged-history-files): Use $emacslog rather than Makefile.in. (change-history-nocommit): Store hash in $emacslog. * build-aux/gitlog-to-emacslog (gen_origin): Move default here. * admin/update_autogen (changelog_files): Update for the above.
-rw-r--r--Makefile.in14
-rwxr-xr-xadmin/update_autogen2
-rwxr-xr-xbuild-aux/gitlog-to-emacslog5
3 files changed, 11 insertions, 10 deletions
diff --git a/Makefile.in b/Makefile.in
index c1ed1c31c19..5102575217e 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -1091,10 +1091,8 @@ bootstrap: bootstrap-clean
.PHONY: ChangeLog change-history change-history-commit change-history-nocommit
.PHONY: master-branch-is-current unchanged-history-files
-# The newest revision that should not appear in the generated ChangeLog.
-gen_origin = 2c1b8604946efbcd8ec5dd6c6dda7541ce4fc3c0
-
CHANGELOG =
+emacslog = $(srcdir)/build-aux/gitlog-to-emacslog
# Convert git commit log to ChangeLog file. make-dist uses this.
# I guess this is PHONY because it generates in distprefix (which is
@@ -1103,7 +1101,7 @@ CHANGELOG =
ChangeLog:
@[ -n "${CHANGELOG}" ] || test ! -f ChangeLog
$(AM_V_GEN)distprefix=$(distprefix) srcprefix=$(srcdir)/ \
- $(srcdir)/build-aux/gitlog-to-emacslog $(gen_origin) $(CHANGELOG)
+ $(emacslog) . $(CHANGELOG)
# The ChangeLog history files are called ChangeLog.1, ChangeLog.2, ...,
# ChangeLog.$(CHANGELOG_HISTORY_INDEX_MAX). $(CHANGELOG_N) stands for
@@ -1115,7 +1113,7 @@ CHANGELOG_N = ChangeLog.$(CHANGELOG_HISTORY_INDEX_MAX)
master-branch-is-current:
git branch | grep -q '^\* master$$'
unchanged-history-files:
- x=$$(git diff-files --name-only $(CHANGELOG_N) Makefile.in) && \
+ x=$$(git diff-files --name-only $(CHANGELOG_N) $(emacslog)) && \
test -z "$$x"
# Copy newer commit messages to the start of the ChangeLog history file,
@@ -1126,10 +1124,10 @@ change-history-nocommit: master-branch-is-current unchanged-history-files
>$(CHANGELOG_N).tmp
rm ChangeLog.tmp
new_origin=$$(git log --pretty=format:%H HEAD^!) && \
- sed 's/^\(gen_origin *= *\).*/\1'"$$new_origin/" \
- <Makefile.in >Makefile.in.tmp
+ sed 's/^\(gen_origin=\).*/\1'"$$new_origin/" \
+ < $(emacslog) > $(emacslog).tmp
mv $(CHANGELOG_N).tmp $(CHANGELOG_N)
- mv Makefile.in.tmp Makefile.in
+ mv $(emacslog).tmp $(emacslog)
change-history: change-history-nocommit
$(MAKE) $@-commit
diff --git a/admin/update_autogen b/admin/update_autogen
index e9d4aa5287c..27d53035502 100755
--- a/admin/update_autogen
+++ b/admin/update_autogen
@@ -94,7 +94,7 @@ changelog_flag=
ldefs_in=lisp/loaddefs.el
ldefs_out=lisp/ldefs-boot.el
changelog_n=$(sed -n 's/CHANGELOG_HISTORY_INDEX_MAX *= *//p' Makefile.in)
-changelog_files="ChangeLog.$changelog_n Makefile.in"
+changelog_files="ChangeLog.$changelog_n build-aux/gitlog-to-emacslog"
sources="configure.ac lib/Makefile.am"
## Files to copy into autogendir.
## Everything:
diff --git a/build-aux/gitlog-to-emacslog b/build-aux/gitlog-to-emacslog
index 059cf81abc0..a657cce0b61 100755
--- a/build-aux/gitlog-to-emacslog
+++ b/build-aux/gitlog-to-emacslog
@@ -22,7 +22,10 @@
LC_ALL=C
export LC_ALL
-gen_origin=${1?}
+# The newest revision that should not appear in the generated ChangeLog.
+gen_origin=2c1b8604946efbcd8ec5dd6c6dda7541ce4fc3c0
+test -n "$1" && test "$1" != "." && gen_origin=$1
+
output=$2
test -n "$output" || output=ChangeLog