File ipxe.stable-build-id.patch of Package qemu-2.10
From: Olaf Hering <olaf@aepfle.de>
Date: Thu, 19 Jan 2017 10:36:38 +0100
Subject: stable build-id
It is desirable to produce the same bits on subsequent
builds when the actual code of the package doesn't
change. (bsc#1011213)
Signed-off-by: Bruce Rogers <brogers@suse.com>
---
src/Makefile.housekeeping | 15 +++++++++++----
1 file changed, 11 insertions(+), 4 deletions(-)
--- a/src/Makefile.housekeeping
+++ b/src/Makefile.housekeeping
@@ -1141,49 +1141,56 @@ VERYCLEANUP += $(BLIB_LIST)
#
BLIB = $(BIN)/blib.a
$(BLIB) : $(BLIB_OBJS) $(BLIB_LIST) $(MAKEDEPS)
$(Q)$(RM) $(BLIB)
$(QM)$(ECHO) " [AR] $@"
$(Q)$(AR) r $@ $(sort $(BLIB_OBJS))
$(Q)$(RANLIB) $@
blib : $(BLIB)
# Command to generate build ID. Must be unique for each $(BIN)/%.tmp,
# even within the same build run.
#
-BUILD_ID_CMD := perl -e 'printf "0x%08x", int ( rand ( 0xffffffff ) );'
+# NB: In the case of the SUSE ipxe package we want reproducible
+# builds, so we just use the TGT_PCI_VENDOR variable, which is already
+# a unique (in the context of the files we generate) hex value suitable
+# for specifying the build_id. We no longer define a BUILD_ID_CMD, as
+# we need to use the TGT_PCI_VENDOR variable directly in the link command
# Build timestamp
#
-BUILD_TIMESTAMP := $(shell date +%s)
+# NB: In the case of the SUSE qemu-ipxe package we want reproducible
+# builds, so we use a pre-determined timestamp, rather than the current
+# timestamp
+BUILD_TIMESTAMP := 0xdeadcafe
# Build version
#
GIT_INDEX := $(if $(GITVERSION),$(if $(wildcard ../.git/index),../.git/index))
$(BIN)/version.%.o : core/version.c $(MAKEDEPS) $(GIT_INDEX)
$(QM)$(ECHO) " [VERSION] $@"
$(Q)$(COMPILE_c) -DBUILD_NAME="\"$*\"" \
-DVERSION_MAJOR=$(VERSION_MAJOR) \
-DVERSION_MINOR=$(VERSION_MINOR) \
-DVERSION_PATCH=$(VERSION_PATCH) \
-DVERSION="\"$(VERSION)\"" \
-c $< -o $@
# Build an intermediate object file from the objects required for the
# specified target.
#
$(BIN)/%.tmp : $(BIN)/version.%.o $(BLIB) $(MAKEDEPS) $(LDSCRIPT)
$(QM)$(ECHO) " [LD] $@"
- $(Q)$(LD) $(LDFLAGS) -T $(LDSCRIPT) $(TGT_LD_FLAGS) $< $(BLIB) -o $@ \
- --defsym _build_id=`$(BUILD_ID_CMD)` \
+ set -x ; $(LD) $(LDFLAGS) -T $(LDSCRIPT) $(TGT_LD_FLAGS) $< $(BLIB) -o $@ \
+ --defsym _build_id="$(TGT_PCI_VENDOR)" \
--defsym _build_timestamp=$(BUILD_TIMESTAMP) \
-Map $(BIN)/$*.tmp.map
$(Q)$(OBJDUMP) -ht $@ | $(PERL) $(SORTOBJDUMP) >> $(BIN)/$*.tmp.map
# Keep intermediate object file (useful for debugging)
.PRECIOUS : $(BIN)/%.tmp
# Show a linker map for the specified target
#
$(BIN)/%.map : $(BIN)/%.tmp
@less $(BIN)/$*.tmp.map