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lib/rmodules: Add support for LTO

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Change-Id: I9cdda036f330486370e8c4120be5b6a0fd982e99
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/84038
Reviewed-by: Nico Huber <nico.h@gmx.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
Arthur Heymans 2024-08-22 23:04:14 +02:00 • committed by Felix Held
commit 86dadcd52a
1 changed files with 4 additions and 0 deletions
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4
src/lib/Makefile.mk
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@ -314,7 +314,11 @@ RMODULE_LDFLAGS := -z defs -Bsymbolic
# rmdoule is named $(1).rmod
define rmodule_link
$(strip $(1)): $(strip $(2)) $$(COMPILER_RT_rmodules_$(3)) $(call src-to-obj,rmodules_$(3),src/lib/rmodule.ld) | $$(RMODTOOL)
ifeq ($(CONFIG_LTO),y)
$$(CC_rmodules_$(3)) $$(CPPFLAGS_rmodules_$(3)) $$(CFLAGS_rmodules_$(3)) $$(LDFLAGS_rmodules_$(3):%=-Wl,%) $$(COMPILER_RT_FLAGS_rmodules_$(3):%=-Wl,%) $(RMODULE_LDFLAGS) $($(1)-ldflags:%=-Wl,%) -T $(call src-to-obj,rmodules_$(3),src/lib/rmodule.ld) -o $$@ -Wl,--whole-archive -Wl,--start-group $(filter-out %.ld,$(2)) -Wl,--no-whole-archive $$(COMPILER_RT_rmodules_$(3)) -Wl,--end-group
else
$$(LD_rmodules_$(3)) $$(LDFLAGS_rmodules_$(3)) $(RMODULE_LDFLAGS) $($(1)-ldflags) -T $(call src-to-obj,rmodules_$(3),src/lib/rmodule.ld) -o $$@ --whole-archive --start-group $(filter-out %.ld,$(2)) --no-whole-archive $$(COMPILER_RT_rmodules_$(3)) --end-group
endif
$$(NM_rmodules_$(3)) -n $$@ > $$(basename $$@).map
endef