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build system: run linker scripts through the preprocessor

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This allows combining and simplifying linker scripts.

This is inspired by the commit listed below, but rewritten to match
upstream, and split in smaller pieces to keep intent clear.

Change-Id: Ie5c11bd8495a399561cefde2f3e8dd300f4feb98
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Based-On-Change-Id: I50af7dacf616e0f8ff4c43f4acc679089ad7022b
Based-On-Signed-off-by: Julius Werner <jwerner@chromium.org>
Based-On-Reviewed-on: https://chromium-review.googlesource.com/219170
Reviewed-on: http://review.coreboot.org/9303
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
This commit is contained in:
Patrick Georgi
2015-04-04 15:50:20 +02:00
committed by Stefan Reinauer
parent d126a749b8
commit 828e0e86f3
24 changed files with 72 additions and 78 deletions
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12
Makefile.inc
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@@ -112,9 +112,9 @@ files-in-dir=$(filter-out $(call dir-wildcards,$(call filter-out-dirs,$(1),$(sor
#######################################################################
# reduce command line length by linking the objects of each
# directory into an intermediate file
ramstage-postprocess=$(foreach d,$(sort $(dir $(1))), \
ramstage-postprocess=$(foreach d,$(sort $(dir $(filter-out %.ld,$(1)))), \
$(eval $(d)ramstage.o: $(call files-in-dir,$(d),$(filter-out %.ld,$(1))); $$(LD_ramstage) -o $$@ -r $$^ ) \
$(eval ramstage-objs:=$(d)ramstage.o $(filter-out $(call files-in-dir,$(d),$(1)),$(filter-out %.ld,$(ramstage-objs)))))
$(eval ramstage-objs:=$(d)ramstage.o $(filter-out $(filter-out %.ld, $(call files-in-dir,$(d),$(1))),$(ramstage-objs))))
romstage-generic-ccopts += -D__PRE_RAM__
ifeq ($(CONFIG_TRACE),y)
@@ -142,9 +142,10 @@ bootblock-c-deps:=$$(OPTION_TABLE_H)
# Add handler to copy linker scripts
define generic-objs_ld_template_gen
de$(EMPTY)fine $(1)-objs_ld_template
$$(call src-to-obj,$1,$$(1).ld): $$(1).ld
$$(call src-to-obj,$1,$$(1).ld): $$(1).ld $(obj)/config.h
@printf " CP $$$$(subst $$$$(obj)/,,$$$$(@))\n"
cp $$$$< $$$$@
$$(CC_$(1)) $$(CPPFLAGS_$(1)) $($(1)-ld-ccopts) $(PREPROCESS_ONLY) -include $(obj)/config.h $$$$< > $$$$@.tmp
mv $$$$@.tmp $$$$@
en$(EMPTY)def
endef
@@ -259,9 +260,6 @@ $(obj)/build.h: .xcompile
util/genbuild_h/genbuild_h.sh > $(obj)/build.ht
mv $(obj)/build.ht $(obj)/build.h
$(obj)/ldoptions: $(obj)/config.h
awk '/^#define ([^"])* ([^"])*$$/ {gsub("\\r","",$$3); print "PROVIDE_HIDDEN(" $$2 " = " $$3 ");";}' $< > $@
build-dirs:
mkdir -p $(objcbfs) $(objgenerated)