From 8d9ff6b6f7b2ba0c3dcba926099f819af871e0a8 Mon Sep 17 00:00:00 2001 From: Julien Dusser <julien.dusser@free.fr> Date: Wed, 19 Jul 2017 15:45:08 +0200 Subject: [PATCH] ar71xx: lzma loader use LTO Change the Makefile to use LTO for better code optimisations. Gains are very low, only 270 bytes saved, but it's only Makefile changes. Signed-off-by: Julien Dusser <julien.dusser@free.fr> --- target/linux/ar71xx/image/lzma-loader/src/Makefile | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/target/linux/ar71xx/image/lzma-loader/src/Makefile b/target/linux/ar71xx/image/lzma-loader/src/Makefile index 5f10bdb8f1..682b31fe8c 100644 --- a/target/linux/ar71xx/image/lzma-loader/src/Makefile +++ b/target/linux/ar71xx/image/lzma-loader/src/Makefile @@ -37,11 +37,13 @@ CFLAGS = -D__KERNEL__ -Wall -Wstrict-prototypes -Wno-trigraphs -Os \ -mabi=32 -march=mips32r2 \ -Wa,-32 -Wa,-march=mips32r2 -Wa,-mips32r2 -Wa,--trap CFLAGS += -D_LZMA_PROB32 +CFLAGS += -flto ASFLAGS = $(CFLAGS) -D__ASSEMBLY__ -LDFLAGS = -static --gc-sections -no-warn-mismatch -LDFLAGS += -e startup -T loader.lds -Ttext $(LZMA_TEXT_START) +LDFLAGS = -static -Wl,--gc-sections -Wl,-no-warn-mismatch +LDFLAGS += -Wl,-e,startup -T loader.lds -Wl,-Ttext,$(LZMA_TEXT_START) +LDFLAGS += -flto -fwhole-program O_FORMAT = $(shell $(OBJDUMP) -i | head -2 | grep elf32) @@ -86,7 +88,7 @@ data.o: $(LOADER_DATA) $(LD) -r -b binary --oformat $(O_FORMAT) -T lzma-data.lds -o $@ $< loader: $(OBJECTS) - $(LD) $(LDFLAGS) -o $@ $(OBJECTS) + $(CC) $(CFLAGS) $(LDFLAGS) -o $@ $(OBJECTS) loader.bin: loader $(OBJCOPY) $(BIN_FLAGS) $< $@ -- 2.25.1