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bpo-29708: support SOURCE_DATE_EPOCH for build info #5313

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bpo-29708: support SOURCE_DATE_EPOCH for build info #5313

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12 changes: 12 additions & 0 deletions Makefile.pre.in
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Original file line number Diff line number Diff line change
Expand Up @@ -737,13 +737,25 @@ regen-all: regen-opcode regen-opcode-targets regen-typeslots regen-grammar regen
############################################################################
# Special rules for object files

DATE_FMT = %b %d %Y
TIME_FMT = %H:%M:%S
ifdef SOURCE_DATE_EPOCH
BUILD_DATE ?= $(shell date -u -d "@$(SOURCE_DATE_EPOCH)" "+$(DATE_FMT)" 2>/dev/null || date -u -r "$(SOURCE_DATE_EPOCH)" "+$(DATE_FMT)" 2>/dev/null || date -u "+$(DATE_FMT)")
BUILD_TIME ?= $(shell date -u -d "@$(SOURCE_DATE_EPOCH)" "+$(TIME_FMT)" 2>/dev/null || date -u -r "$(SOURCE_DATE_EPOCH)" "+$(TIME_FMT)" 2>/dev/null || date -u "+$(TIME_FMT)")
else
BUILD_DATE ?= $(shell date "+$(DATE_FMT)")
BUILD_TIME ?= $(shell date "+$(TIME_FMT)")
endif

Modules/getbuildinfo.o: $(PARSER_OBJS) \
$(OBJECT_OBJS) \
$(PYTHON_OBJS) \
$(MODULE_OBJS) \
$(MODOBJS) \
$(srcdir)/Modules/getbuildinfo.c
$(CC) -c $(PY_CORE_CFLAGS) \
-DDATE="\"$(BUILD_DATE)\"" \
-DTIME="\"$(BUILD_TIME)\"" \
-DGITVERSION="\"`LC_ALL=C $(GITVERSION)`\"" \
-DGITTAG="\"`LC_ALL=C $(GITTAG)`\"" \
-DGITBRANCH="\"`LC_ALL=C $(GITBRANCH)`\"" \
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4 changes: 4 additions & 0 deletions Misc/NEWS.d/next/Build/2018-01-25-10-35-49.bpo-29708.d97BIE.rst
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@@ -0,0 +1,4 @@
Honor the SOURCE_DATE_EPOCH environment variable during build to produce
reproducible binaries. This means using the SOURCE_DATE_EPOCH value to
compute values for the DATE and TIME variables, that will be used in
Modules/getbuildinfo.c