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.be...@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 +ifneq ($(CONFIG_LTO)$(CONFIG_USE_PRIVATE_LIBGCC),yy) LDFLAGS_FINAL += --gc-sections +endif ifndef CONFIG_LTO PLATFORM_RELFLAGS += -ffunction-sections -fdata-sections -- 2.26.2
