From d986bae4e2a8bf0f4e31009d6b4a37809e9a4809 Mon Sep 17 00:00:00 2001 From: Masahiro Yamada Date: Fri, 17 Jan 2020 13:44:20 +0900 Subject: Build: support per-BL LDFLAGS make_helpers/build_macros.mk supports per-BL CFLAGS. For example, you can pass compiler flags only to BL31 by using BL31_CFLAGS. This commit adds per-BL LDFLAGS support, which is useful as well. My main motivation of this addition is to use it for ENABLE_PIE. When ENABLE_PIE is enabled, some linker flags are added to TF_LDFLAGS, which affects all the TF images. It will make more sense to pass the relevant options only to BL images that support it. Change-Id: I203acaab0091db5ae0ea6e66460ee7dc8d9c4d75 Signed-off-by: Masahiro Yamada --- make_helpers/build_macros.mk | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/make_helpers/build_macros.mk b/make_helpers/build_macros.mk index 6b72cfd0d..1fa26cc2b 100644 --- a/make_helpers/build_macros.mk +++ b/make_helpers/build_macros.mk @@ -412,6 +412,7 @@ bl${1}_dirs: | ${OBJ_DIRS} $(eval $(call MAKE_OBJS,$(BUILD_DIR),$(SOURCES),$(1))) $(eval $(call MAKE_LD,$(LINKERFILE),$(BL_LINKERFILE),$(1))) +$(eval BL_LDFLAGS := $(BL$(call uppercase,$(1))_LDFLAGS)) ifeq ($(USE_ROMLIB),1) $(ELF): romlib.bin @@ -427,7 +428,7 @@ else $$(CC) $$(TF_CFLAGS) $$(CFLAGS) -xc -c - -o $(BUILD_DIR)/build_message.o endif ifneq ($(findstring armlink,$(notdir $(LD))),) - $$(Q)$$(LD) -o $$@ $$(TF_LDFLAGS) $$(LDFLAGS) --entry=bl${1}_entrypoint \ + $$(Q)$$(LD) -o $$@ $$(TF_LDFLAGS) $$(LDFLAGS) $(BL_LDFLAGS) --entry=bl${1}_entrypoint \ --predefine="-D__LINKER__=$(__LINKER__)" \ --predefine="-DTF_CFLAGS=$(TF_CFLAGS)" \ --map --list="$(MAPFILE)" --scatter=${PLAT_DIR}/scat/bl${1}.scat \ @@ -438,7 +439,7 @@ else ifneq ($(findstring gcc,$(notdir $(LD))),) -Wl,-T$(LINKERFILE) $(BUILD_DIR)/build_message.o \ $(OBJS) $(LDPATHS) $(LIBWRAPPER) $(LDLIBS) $(BL_LIBS) else - $$(Q)$$(LD) -o $$@ $$(TF_LDFLAGS) $$(LDFLAGS) -Map=$(MAPFILE) \ + $$(Q)$$(LD) -o $$@ $$(TF_LDFLAGS) $$(LDFLAGS) $(BL_LDFLAGS) -Map=$(MAPFILE) \ --script $(LINKERFILE) $(BUILD_DIR)/build_message.o \ $(OBJS) $(LDPATHS) $(LIBWRAPPER) $(LDLIBS) $(BL_LIBS) endif -- cgit v1.2.3