File reproducible.patch of Package mono-core

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File reproducible.patch of Package mono-core

commit 3407e9110e398d7c3ad48ee3fcf537417270dfb1
Author: Bernhard M. Wiedemann <bwiedemann@suse.de>
Date:   Mon Aug 10 05:20:25 2020 +0200

Allow to override build date with SOURCE_DATE_EPOCH
    
    in order to make builds reproducible.
    See https://reproducible-builds.org/ for why this is good
    and https://reproducible-builds.org/specs/source-date-epoch/
    for the definition of this variable.
    
    This date call works with different variants of the date command.
    
    Also use UTC to be independent of timezone.
    
    This helps a bit towards deterministic mono builds = issue #20172
    
    This PR was done while working on reproducible builds for openSUSE.

Index: mono-6.12.0.107/mono/mini/Makefile.am
===================================================================
--- mono-6.12.0.107.orig/mono/mini/Makefile.am
+++ mono-6.12.0.107/mono/mini/Makefile.am
@@ -232,16 +232,17 @@ AM_CPPFLAGS = $(LIBGC_CPPFLAGS)
 mono_sgen_SOURCES =
 mono_sgen_CFLAGS = $(AM_CFLAGS) @CXX_REMOVE_CFLAGS@
 
+BUILD_DATE = $(shell SOURCE_DATE_EPOCH="$${SOURCE_DATE_EPOCH:-$$(date +%s)}" ;date -u -d "@$$SOURCE_DATE_EPOCH" 2>/dev/null || date -u -r "$$SOURCE_DATE_EPOCH" 2>/dev/null || date -u)
 # We build this after libmono was built so it contains the date when the final
 # link was done
 if SUPPORT_BOEHM
 buildver-boehm.h: libmini.la $(monodir)/mono/metadata/libmonoruntime.la
-	@echo "const char *build_date = \"`date`\";" > buildver-boehm.h
+	@echo "const char *build_date = \"$(BUILD_DATE)\";" > buildver-boehm.h
 libmain_a-main.$(OBJEXT): buildver-boehm.h
 endif
 
 buildver-sgen.h: libmini.la $(monodir)/mono/metadata/libmonoruntimesgen.la $(monodir)/mono/sgen/libmonosgen.la
-	@echo "const char *build_date = \"`date`\";" > buildver-sgen.h
+	@echo "const char *build_date = \"$(BUILD_DATE)\";" > buildver-sgen.h
 
 libmain_a-main-sgen.$(OBJEXT): buildver-sgen.h

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File reproducible.patch of Package mono-core

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