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build(makefile): add extra makefile variable for extension 

Introduce EXTRA_LINKERFILE for GCC linker options. GCC linker
can realize multiple linker scripts, and vendors can extend ro or
text sections by inserting sections among the original sections
specified by blx.ld.S.

Vendors can assign compiled object files by assigning MODULE_OBJS
with their own built path.

Signed-off-by: Leon Chen <leon.chen@mediatek.com>
Change-Id: I1bd2e0383a52204723816131da4b7948def4c4e9
This commit is contained in:
Leon Chen 2022-03-23 18:51:48 +08:00
parent 19a9cc3a1b
commit 8dccddc72b
1 changed files with 6 additions and 2 deletions
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8
make_helpers/build_macros.mk
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@ -1,5 +1,5 @@
#
# Copyright (c) 2015-2021, ARM Limited and Contributors. All rights reserved.
# Copyright (c) 2015-2022, ARM Limited and Contributors. All rights reserved.
#
# SPDX-License-Identifier: BSD-3-Clause
#
@ -489,6 +489,10 @@ ifeq ($(USE_ROMLIB),1)
$(ELF): romlib.bin
endif
# MODULE_OBJS can be assigned by vendors with different compiled
# object file path, and prebuilt object file path.
$(eval OBJS += $(MODULE_OBJS))
$(ELF): $(OBJS) $(LINKERFILE) | $(1)_dirs libraries $(BL_LIBS)
$$(ECHO) " LD $$@"
ifdef MAKE_BUILD_STRINGS
@ -507,7 +511,7 @@ ifneq ($(findstring armlink,$(notdir $(LD))),)
$(BUILD_DIR)/build_message.o $(OBJS)
else ifneq ($(findstring gcc,$(notdir $(LD))),)
$$(Q)$$(LD) -o $$@ $$(TF_LDFLAGS) $$(LDFLAGS) -Wl,-Map=$(MAPFILE) \
-Wl,-T$(LINKERFILE) $(BUILD_DIR)/build_message.o \
-Wl,-dT $(LINKERFILE) $(EXTRA_LINKERFILE) $(BUILD_DIR)/build_message.o \
$(OBJS) $(LDPATHS) $(LIBWRAPPER) $(LDLIBS) $(BL_LIBS)
else
$$(Q)$$(LD) -o $$@ $$(TF_LDFLAGS) $$(LDFLAGS) $(BL_LDFLAGS) -Map=$(MAPFILE) \