commit 701bc2eaad5e82001a8b758ae92af00f6a810c5a
author Marek Behún <marek.behun@nic.cz> Thu May 20 13:24:24 2021 +0200
committer Tom Rini <trini@konsulko.com> Mon May 24 14:21:30 2021 -0400
tree 0c9c960d22440e952ab627489619b445ec2e34c4
parent 2a9079e365fab6d1d6d93afa8736f050c865c1b5

ARM: don't use --gc-sections with LTO when using private libgcc

When using LTO, we can throw away the --gc-sections flag, but only if
using private libgcc.

When using system's libgcc, --gc-sections is still needed, otherwise
linking will fail due to undefined references to libc's symbols.

Signed-off-by: Marek Behún <marek.behun@nic.cz>
Reviewed-by: Simon Glass <sjg@chromium.org>

arch/arm/config.mk

diff --git a/arch/arm/config.mk b/arch/arm/config.mk
index f556ee3..16c63e1 100644
--- a/arch/arm/config.mk
+++ b/arch/arm/config.mk
@@ -15,7 +15,9 @@
 		  -fstack-protector-strong
 CFLAGS_EFI := -fpic -fshort-wchar
 
+ifneq ($(CONFIG_LTO)$(CONFIG_USE_PRIVATE_LIBGCC),yy)
 LDFLAGS_FINAL += --gc-sections
+endif
 
 ifndef CONFIG_LTO
 PLATFORM_RELFLAGS += -ffunction-sections -fdata-sections