[XS] Change in coreboot[main]: lib/rmodules: Add support for LTO

[Felix Held (Code Review)]

Felix Held has submitted this change. ( https://review.coreboot.org/c/coreboot/+/84038?usp=email )

(

2 is the latest approved patch-set.
No files were changed between the latest approved patch-set and the submitted one.
 )Change subject: lib/rmodules: Add support for LTO
......................................................................

lib/rmodules: Add support for LTO

Change-Id: I9cdda036f330486370e8c4120be5b6a0fd982e99
Signed-off-by: Arthur Heymans 
Reviewed-on: https://review.coreboot.org/c/coreboot/+/84038
Reviewed-by: Nico Huber 
Tested-by: build bot (Jenkins) 
---
M src/lib/Makefile.mk
1 file changed, 4 insertions(+), 0 deletions(-)

Approvals:
  build bot (Jenkins): Verified
  Nico Huber: Looks good to me, approved

diff --git a/src/lib/Makefile.mk b/src/lib/Makefile.mk
index 89e5b65..40df2b8 100644
--- a/src/lib/Makefile.mk
+++ b/src/lib/Makefile.mk
@@ -314,7 +314,11 @@
 # 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