From 36fb6d174d5230e666a19e331901ff88d4700b1d Mon Sep 17 00:00:00 2001 From: James Hilliard Date: Thu, 24 Jan 2019 16:27:33 +0800 Subject: [PATCH] fs/common.mk: enable multithreaded xz compression xz help indicates only 1 thread is used unless we set threads: -T, --threads=NUM use at most NUM threads; the default is 1; set to 0 to use as many threads as there are processor cores Since this splits the file into blocks, the result will be not bit-for-bit identical to single-threaded compression. Therefore, don't enable this in BR2_REPRODUCIBLE builds. Signed-off-by: James Hilliard Reviewed-by: Matthew Weber [Arnout: append the option instead of repeating the entire command] Signed-off-by: Arnout Vandecappelle (Essensium/Mind) --- fs/common.mk | 3 +++ 1 file changed, 3 insertions(+) diff --git a/fs/common.mk b/fs/common.mk index ca46a331d6..842ea924a5 100644 --- a/fs/common.mk +++ b/fs/common.mk @@ -140,6 +140,9 @@ ifeq ($$(BR2_TARGET_ROOTFS_$(2)_XZ),y) ROOTFS_$(2)_DEPENDENCIES += host-xz ROOTFS_$(2)_COMPRESS_EXT = .xz ROOTFS_$(2)_COMPRESS_CMD = xz -9 -C crc32 -c +ifeq ($(BR2_REPRODUCIBLE),) +ROOTFS_$(2)_COMPRESS_CMD += -T $(PARALLEL_JOBS) +endif endif $$(BINARIES_DIR)/$$(ROOTFS_$(2)_FINAL_IMAGE_NAME): ROOTFS=$(2) -- 2.30.2