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Introduce TF_LDFLAGS

Browse source 
Use TF_LDFLAGS from the Makefiles, and still append LDFLAGS as well to
the compiler's invocation. This allows passing extra options from the
make command line using LDFLAGS.

Document new LDFLAGS Makefile option.

Change-Id: I88c5ac26ca12ac2b2d60a6f150ae027639991f27
Signed-off-by: Douglas Raillard <douglas.raillard@arm.com>
This commit is contained in:
Douglas Raillard 2017-06-22 14:44:48 +01:00
parent 6bf3624969
commit c2b8806fb6
4 changed files with 10 additions and 8 deletions
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7
Makefile
View file

@ -151,10 +151,9 @@ TF_CFLAGS += $(CPPFLAGS) $(TF_CFLAGS_$(ARCH)) \
-ffreestanding -fno-builtin -Wall -std=gnu99 \
-Os -ffunction-sections -fdata-sections
LDFLAGS += $(LDFLAGS_$(ARCH))
LDFLAGS += --fatal-warnings -O1
LDFLAGS += --gc-sections
TF_LDFLAGS += --fatal-warnings -O1
TF_LDFLAGS += --gc-sections
TF_LDFLAGS += $(TF_LDFLAGS_$(ARCH))
################################################################################
# Common sources and include directories

3
docs/user-guide.md
View file

@ -385,6 +385,9 @@ performed.
AArch64 and facilitates the loading of `SP_MIN` and BL33 as AArch32 executable
images.
* `LDFLAGS`: Extra user options appended to the linkers' command line in
addition to the one set by the build system.
* `LOAD_IMAGE_V2`: Boolean option to enable support for new version (v2) of
image loading, which provides more flexibility and scalability around what
images are loaded and executed during boot. Default is 0.

4
lib/cpus/cpu-ops.mk
View file

@ -145,10 +145,10 @@ $(eval $(call add_define,ERRATA_A57_833471))
# Errata build flags
ifneq (${ERRATA_A53_843419},0)
LDFLAGS_aarch64 += --fix-cortex-a53-843419
TF_LDFLAGS_aarch64 += --fix-cortex-a53-843419
endif
ifneq (${ERRATA_A53_835769},0)
TF_CFLAGS_aarch64 += -mfix-cortex-a53-835769
LDFLAGS_aarch64 += --fix-cortex-a53-835769
TF_LDFLAGS_aarch64 += --fix-cortex-a53-835769
endif

4
make_helpers/build_macros.mk
View file

@ -313,8 +313,8 @@ else
const char version_string[] = "${VERSION_STRING}";' | \
$$(CC) $$(TF_CFLAGS) $$(CFLAGS) -xc -c - -o $(BUILD_DIR)/build_message.o
endif
$$(Q)$$(LD) -o $$@ $$(LDFLAGS) -Map=$(MAPFILE) --script $(LINKERFILE) \
$(BUILD_DIR)/build_message.o $(OBJS)
$$(Q)$$(LD) -o $$@ $$(TF_LDFLAGS) $$(LDFLAGS) -Map=$(MAPFILE) \
--script $(LINKERFILE) $(BUILD_DIR)/build_message.o $(OBJS)
$(DUMP): $(ELF)
@echo " OD $$@"