commit 7243493ffd8b333372d31980b496d1a6e432d971
author Marek Behún <marek.behun@nic.cz> Thu May 20 13:24:07 2021 +0200
committer Tom Rini <trini@konsulko.com> Mon May 24 14:21:30 2021 -0400
tree 06e29ace488ff17e09a3a993eabf49145a98c578
parent 184c4afe8f56aeca51d59370aae37238fb4a426e

sandbox: make LTO available

Make LTO available for sandbox architecture.

Signed-off-by: Marek Behún <marek.behun@nic.cz>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>

arch/Kconfig

diff --git a/arch/Kconfig b/arch/Kconfig
index 6c4b81a..c5c03d4 100644
--- a/arch/Kconfig
+++ b/arch/Kconfig
@@ -101,6 +101,7 @@
 
 config SANDBOX
 	bool "Sandbox"
+	select ARCH_SUPPORTS_LTO
 	select BOARD_LATE_INIT
 	select BZIP2
 	select CMD_POWEROFF

arch/sandbox/config.mk

diff --git a/arch/sandbox/config.mk b/arch/sandbox/config.mk
index 2149771..1f8cb61 100644
--- a/arch/sandbox/config.mk
+++ b/arch/sandbox/config.mk
@@ -17,16 +17,20 @@
 endif
 
 cmd_u-boot__ = $(CC) -o $@ -Wl,-T u-boot.lds $(u-boot-init) \
+	$(LTO_FINAL_LDFLAGS) \
 	-Wl,--whole-archive \
 		$(u-boot-main) \
+		$(u-boot-keep-syms-lto) \
 	-Wl,--no-whole-archive \
 	$(PLATFORM_LIBS) -Wl,-Map -Wl,u-boot.map
 
 cmd_u-boot-spl = (cd $(obj) && $(CC) -o $(SPL_BIN) -Wl,-T u-boot-spl.lds \
+	$(LTO_FINAL_LDFLAGS) \
 	$(patsubst $(obj)/%,%,$(u-boot-spl-init)) \
 	-Wl,--whole-archive \
 		$(patsubst $(obj)/%,%,$(u-boot-spl-main)) \
 		$(patsubst $(obj)/%,%,$(u-boot-spl-platdata)) \
+		$(patsubst $(obj)/%,%,$(u-boot-spl-keep-syms-lto)) \
 	-Wl,--no-whole-archive \
 	$(PLATFORM_LIBS) -Wl,-Map -Wl,u-boot-spl.map -Wl,--gc-sections)