Add crossgcc target to automatically build reference toolchain

[coreboot.git] / Makefile

diff --git a/Makefile b/Makefile
index 05b54e298e67d4edca5f7f7b4ee0131b1cebcd76..69e32a4d667ad1c5b1c474f3f71f110f321c9489 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -44,6 +44,9 @@ export objk := $(objutil)/kconfig
 export KCONFIG_AUTOHEADER := $(obj)/config.h
 export KCONFIG_AUTOCONFIG := $(obj)/auto.conf
 
+# directory containing the toplevel Makefile.inc
+TOPLEVEL := .
+
 CONFIG_SHELL := sh
 KBUILD_DEFCONFIG := configs/defconfig
 UNAME_RELEASE := $(shell uname -r)
@@ -61,7 +64,6 @@ ifneq ($(Q),)
 endif
 endif
 
-CPP:= $(CC) -x assembler-with-cpp -DASSEMBLY -E
 HOSTCC = gcc
 HOSTCXX = g++
 HOSTCFLAGS := -I$(srck) -I$(objk) -g
@@ -73,9 +75,8 @@ DOXYGEN_OUTPUT_DIR := doxygen
 
 all: real-all
 
-# This include must come _before_ he pattern rules below!
+# This include must come _before_ the pattern rules below!
 # Order _does_ matter for pattern rules.
-include Makefile.inc
 include util/kconfig/Makefile
 
 # Three cases where we don't need fully populated $(obj) lists:
@@ -93,6 +94,7 @@ endif
 endif
 
 ifeq ($(NOCOMPILE),1)
+include $(TOPLEVEL)/Makefile.inc
 real-all: config
 
 else
@@ -189,7 +191,7 @@ evaluate_subdirs= \
        $(if $(subdirs),$(eval $(call evaluate_subdirs)))
 
 # collect all object files eligible for building
-subdirs:=.
+subdirs:=$(TOPLEVEL)
 $(eval $(call evaluate_subdirs))
 
 src-to-obj=$(addsuffix .$(1).o, $(basename $(patsubst src/%, $(obj)/%, $($(1)-srcs))))
@@ -204,9 +206,10 @@ define create_cc_template
 # $1 obj class
 # $2 source suffix (c, S)
 # $3 additional compiler flags
+# $4 additional dependencies
 ifn$(EMPTY)def $(1)-objs_$(2)_template
 de$(EMPTY)fine $(1)-objs_$(2)_template
-$(obj)/$$(1).$(1).o: src/$$(1).$(2) $(obj)/config.h
+$(obj)/$$(1).$(1).o: src/$$(1).$(2) $(obj)/config.h $(4)
        @printf "    CC         $$$$(subst $$$$(obj)/,,$$$$(@))\n"
        $(CC) $(3) -MMD $$$$(CFLAGS) -c -o $$$$@ $$$$<
 en$(EMPTY)def
@@ -216,7 +219,7 @@ endef
 filetypes-of-class=$(subst .,,$(sort $(suffix $($(1)-srcs))))
 $(foreach class,$(classes), \
        $(foreach type,$(call filetypes-of-class,$(class)), \
-               $(eval $(call create_cc_template,$(class),$(type),$($(class)-$(type)-ccopts)))))
+               $(eval $(call create_cc_template,$(class),$(type),$($(class)-$(type)-ccopts),$($(class)-$(type)-deps)))))
 
 foreach-src=$(foreach file,$($(1)-srcs),$(eval $(call $(1)-objs_$(subst .,,$(suffix $(file)))_template,$(subst src/,,$(basename $(file))))))
 $(eval $(foreach class,$(classes),$(call foreach-src,$(class))))
@@ -239,6 +242,12 @@ $(shell mkdir -p $(obj) $(objutil)/kconfig/lxdialog $(additional-dirs) $(alldirs
 cscope:
        cscope -bR
 
+crossgcc: clean-for-update
+       $(MAKE) -C util/crossgcc build
+
+crossgcc-clean: clean-for-update
+       $(MAKE) -C util/crossgcc clean
+
 doxy: doxygen
 doxygen:
        $(DOXYGEN) documentation/Doxyfile.coreboot