xref: /openbmc/linux/tools/build/Makefile (revision 45ed13d9) 
1# SPDX-License-Identifier: GPL-2.0
2ifeq ($(srctree),)
3srctree := $(patsubst %/,%,$(dir $(CURDIR)))
4srctree := $(patsubst %/,%,$(dir $(srctree)))
5endif
6
7include $(srctree)/tools//scripts/Makefile.include
8
9define allow-override
10  $(if $(or $(findstring environment,$(origin $(1))),\
11            $(findstring command line,$(origin $(1)))),,\
12    $(eval $(1) = $(2)))
13endef
14
15$(call allow-override,CC,$(CROSS_COMPILE)gcc)
16$(call allow-override,LD,$(CROSS_COMPILE)ld)
17
18export HOSTCC HOSTLD HOSTAR
19
20ifeq ($(V),1)
21  Q =
22else
23  Q = @
24endif
25
26export Q srctree CC LD
27
28MAKEFLAGS := --no-print-directory
29build     := -f $(srctree)/tools/build/Makefile.build dir=. obj
30
31all: $(OUTPUT)fixdep
32
33# Make sure there's anything to clean,
34# feature contains check for existing OUTPUT
35TMP_O := $(if $(OUTPUT),$(OUTPUT)feature/,./)
36
37clean:
38	$(call QUIET_CLEAN, fixdep)
39	$(Q)find $(or $(OUTPUT),.) -name '*.o' -delete -o -name '\.*.cmd' -delete -o -name '\.*.d' -delete
40	$(Q)rm -f $(OUTPUT)fixdep
41	$(call QUIET_CLEAN, feature-detect)
42ifneq ($(wildcard $(TMP_O)),)
43	$(Q)$(MAKE) -C feature OUTPUT=$(TMP_O) clean >/dev/null
44endif
45
46$(OUTPUT)fixdep-in.o: FORCE
47	$(Q)$(MAKE) $(build)=fixdep
48
49$(OUTPUT)fixdep: $(OUTPUT)fixdep-in.o
50	$(QUIET_LINK)$(HOSTCC) $(KBUILD_HOSTLDFLAGS) -o $@ $<
51
52FORCE:
53
54.PHONY: FORCE
55