[OpenWrt-Devel] [PATCH 2/4] mtd: Activate LTO compile option

[Hauke Mehrtens]

This decreases the size of the mtd application by 25% on MIPS BE.

old:
20,597 /sbin/mtd

new:
16,421 /sbin/mtd

Signed-off-by: Hauke Mehrtens <hauke at hauke-m.de>
---
 package/system/mtd/Makefile | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/package/system/mtd/Makefile b/package/system/mtd/Makefile
index 2347b8b723..166bb33281 100644
--- a/package/system/mtd/Makefile
+++ b/package/system/mtd/Makefile
@@ -36,7 +36,8 @@ endef
 target=$(firstword $(subst -, ,$(BOARD)))
 
 MAKE_FLAGS += TARGET="$(target)"
-TARGET_CFLAGS := $(TARGET_CFLAGS) -Dtarget_$(target)=1 -Wall
+TARGET_CFLAGS += -Dtarget_$(target)=1 -Wall -flto
+TARGET_LDFLAGS += -flto=jobserver
 
 ifdef CONFIG_MTD_REDBOOT_PARTS
   MAKE_FLAGS += FIS_SUPPORT=1
-- 
2.20.1


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