From e4e456405177add4df5e21528caa3d873847056a Mon Sep 17 00:00:00 2001 From: Marco Felsch Date: Thu, 24 Nov 2022 11:02:05 +0100 Subject: [PATCH 2/4] build(makefile): add helper to detect linker options This is a small helper to check for possible linker options. If the linker supports the requested option it is returned and if not nothing will be returned, e.g.: TF_LDFLAGS += $(call ld_option, --no-warn-rwx-segments) can be called unconditional. Signed-off-by: Marco Felsch Change-Id: I236800852ece49948ff53a0b91fddba53c8f0f95 --- make_helpers/build_macros.mk | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/make_helpers/build_macros.mk b/make_helpers/build_macros.mk index a58caf565163..06caeea19787 100644 --- a/make_helpers/build_macros.mk +++ b/make_helpers/build_macros.mk @@ -86,6 +86,12 @@ define assert_numerics $(foreach num,$1,$(eval $(call assert_numeric,$(num)))) endef +# Convenience function to check for a given linker option. An call to +# $(call ld_option, --no-XYZ) will return --no-XYZ if supported by the linker +define ld_option + $(shell if $(LD) $(1) -v >/dev/null 2>&1; then echo $(1); fi ) +endef + # CREATE_SEQ is a recursive function to create sequence of numbers from 1 to # $(2) and assign the sequence to $(1) define CREATE_SEQ -- 2.30.2