build: SDK/IB reproducible and faster compression

[openwrt/staging/wigyori.git] / target / imagebuilder / Makefile

diff --git a/target/imagebuilder/Makefile b/target/imagebuilder/Makefile
index b463feb456eed860eb210b3c5c9328f5fa205299..ad19ab2b53ffd08d91ffb86817e54fdb31279660 100644 (file)
--- a/target/imagebuilder/Makefile
+++ b/target/imagebuilder/Makefile
@@ -86,7 +86,10 @@ endif
        (cd $(PKG_BUILD_DIR); find staging_dir/host/bin/ $(IB_LDIR)/scripts/dtc/ -type f | \
                $(XARGS) $(SCRIPT_DIR)/bundle-libraries.sh $(PKG_BUILD_DIR)/staging_dir/host)
        STRIP=sstrip $(SCRIPT_DIR)/rstrip.sh $(PKG_BUILD_DIR)/staging_dir/host/bin/
-       $(TAR) -cf - -C $(BUILD_DIR) $(IB_NAME) | xz -T$(if $(filter 1,$(NPROC)),2,0) -zc -7e > $@
+       (cd $(BUILD_DIR); \
+               tar -I '$(STAGING_DIR_HOST)/bin/xz -7e -T$(if $(filter 1,$(NPROC)),2,0)' -cf $@ $(IB_NAME) \
+               --mtime="$(shell date --date=@$(SOURCE_DATE_EPOCH))"; \
+       )
 
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