[PATCH u-boot v3 38/39] ARM: don't use --gc-sections with LTO when using private libgcc

Marek Behún marek.behun at nic.cz
Tue Mar 16 13:26:08 CET 2021

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 at nic.cz>
 arch/arm/config.mk | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm/config.mk b/arch/arm/config.mk
index 2b2c6ad2e5..68745d489f 100644
--- a/arch/arm/config.mk
+++ b/arch/arm/config.mk
@@ -14,7 +14,9 @@ endif
 CFLAGS_NON_EFI := -fno-pic -ffixed-r9 -ffunction-sections -fdata-sections
 CFLAGS_EFI := -fpic -fshort-wchar
 LDFLAGS_FINAL += --gc-sections
 ifndef CONFIG_LTO
 PLATFORM_RELFLAGS += -ffunction-sections -fdata-sections

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