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| author | Jerome Forissier <jerome@forissier.org> | 2020-05-28 11:34:00 +0200 |
|---|---|---|
| committer | Jérôme Forissier <jerome@forissier.org> | 2020-06-08 19:19:34 +0200 |
| commit | 32f2546819a079c5a349638295c8ed1b6388c3ef (patch) | |
| tree | 411bf33022284363443e5a2a5e0af0ec20810d2b /mk | |
| parent | 65401337ca064f6c2866b6881e3d93edbf7f2921 (diff) | |
build: introduce ld-option macro
Adds a makefile macro to test if the linker supports a given option.
Signed-off-by: Jerome Forissier <jerome@forissier.org>
Acked-by: Jens Wiklander <jens.wiklander@linaro.org>
Diffstat (limited to 'mk')
| -rw-r--r-- | mk/cc-option.mk | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/mk/cc-option.mk b/mk/cc-option.mk index 4699fbcc..4e77786a 100644 --- a/mk/cc-option.mk +++ b/mk/cc-option.mk @@ -7,3 +7,11 @@ $(if $($(_var_name)),$(1),$(2)) endef cc-option = $(strip $(call _cc-option,$(1),$(2))) +_ld-option-supported = $(if $(shell $(LD$(sm)) -v $(1) 2>/dev/null >/dev/null || echo "Not supported"),,1) +_ld-opt-cached-var-name = $(subst =,~,$(subst $(empty) $(empty),,$(strip cached-ld-option-$(1)-$(LD$(sm))))) +define _ld-option +$(eval _var_name := $(call _ld-opt-cached-var-name,$(1))) +$(eval $(_var_name) := $(if $(filter $(origin $(_var_name)),undefined),$(call _ld-option-supported,$(1)),$($(_var_name)))) +$(if $($(_var_name)),$(1),$(2)) +endef +ld-option = $(strip $(call _ld-option,$(1),$(2))) |