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maint: Generate 'doc/version-LANG.texi' reproducibly.

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* doc/local.mk ($(srcdir)/doc/stamp-vti): Change rule into...
(version.texi-from-git): ...this new function.  Call it with vti,guix.texi,;
and for all MANUAL_LANGUAGES with $(i),po/doc/guix-manual.$(lang).po,
-$(lang.po).

Change-Id: Ia8df618178066cad320eecea0299337224e23a73
This commit is contained in:
Janneke Nieuwenhuizen 2024-04-02 22:00:46 +02:00
parent b850d77e11
commit b4d2838d51
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1 changed files with 29 additions and 16 deletions
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45
doc/local.mk
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@ -6,6 +6,7 @@
# Copyright © 2016, 2018 Mathieu Lirzin <mthl@gnu.org>
# Copyright © 2018, 2021 Julien Lepiller <julien@lepiller.eu>
# Copyright © 2019 Timothy Sample <samplet@ngyro.com>
# Copyright © 2024 Janneke Nieuwenhuizen <janneke@gnu.org>
#
# This file is part of GNU Guix.
#
@ -254,22 +255,34 @@ endif
# Reproducible tarball
# Generate 'version.texi' reproducibly using metadata from Git rather than
# using metadata from the filesystem. This is expected to generate warnings:
#
# Makefile:7376: warning: overriding recipe for target 'doc/stamp-vti'
# Makefile:5098: warning: ignoring old recipe for target 'doc/stamp-vti'
$(srcdir)/doc/stamp-vti: $(srcdir)/doc/guix.texi $(top_srcdir)/configure
# Define a rule to build `version[LANG].texi' reproducibly using metadata from
# Git rather than using metadata from the filesystem.
define version.texi-from-git
$(srcdir)/doc/stamp-$(1): $(srcdir)/$(2) $(top_srcdir)/configure
$$(AM_V_GEN)set -e; \
export LANG=C LANGUAGE=C LC_ALL=C LC_TIME=C; \
export TZ=UTC0; \
timestamp=$$(git log --pretty=format:%ct -n1 -- $< 2>/dev/null \
|| echo $(SOURCE_DATE_EPOCH)) \
dmy=$$(date --date="@$$timestamp" "+%-d %B %Y"); \
my=$$(date --date="@$$timestamp" "+%B %Y"); \
{ echo "@set UPDATED $$dmy"; \
echo "@set UPDATED-MONTH $$my"; \
echo "@set EDITION $(VERSION)"; \
echo "@set VERSION $(VERSION)"; } > $@-t; \
mv $@-t $@; \
cp $@ $(srcdir)/doc/version.texi
timestamp="$$$$(git log --pretty=format:%ct -n1 -- "$$<" \
2>/dev/null \
|| echo $$(SOURCE_DATE_EPOCH))" \
dmy=$$$$(date --date="@$$$$timestamp" "+%-d %B %Y"); \
my=$$$$(date --date="@$$$$timestamp" "+%B %Y"); \
{ echo "@set UPDATED $$$$dmy"; \
echo "@set UPDATED-MONTH $$$$my"; \
echo "@set EDITION $$$(VERSION)"; \
echo "@set VERSION $$$(VERSION)"; } > "$$@-t"; \
mv "$$@-t" "$$@"; \
cp -p "$$@" "$$(srcdir)/doc/version$(3).texi"
endef
# Generate rules for stamp-vti and stamp-N that create version.texi and
# version-LANG.texi to override the Autotools versions that use timestamps
# embedded in the file-system. These are expected to generate warnings:
#
# Makefile:7376: warning: overriding recipe for target 'doc/stamp-vti'
# Makefile:5098: warning: ignoring old recipe for target 'doc/stamp-vti'
i:=0
$(eval $(call version.texi-from-git,vti,doc/guix.texi,))
$(foreach lang, $(MANUAL_LANGUAGES), \
$(eval i=$(shell echo $$(($(i)+1)))) \
$(eval $(call version.texi-from-git,$(i),po/doc/guix-manual.$(lang).po,-$(lang))))