Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
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
20export srctree CC LD
21
22MAKEFLAGS := --no-print-directory
23build := -f $(srctree)/tools/build/Makefile.build dir=. obj
24
25all: $(OUTPUT)fixdep
26
27# Make sure there's anything to clean,
28# feature contains check for existing OUTPUT
29TMP_O := $(if $(OUTPUT),$(OUTPUT)feature/,./)
30
31clean:
32 $(call QUIET_CLEAN, fixdep)
33 $(Q)find $(or $(OUTPUT),.) -name '*.o' -delete -o -name '\.*.cmd' -delete -o -name '\.*.d' -delete
34 $(Q)rm -f $(OUTPUT)fixdep
35 $(call QUIET_CLEAN, feature-detect)
36ifneq ($(wildcard $(TMP_O)),)
37 $(Q)$(MAKE) -C feature OUTPUT=$(TMP_O) clean >/dev/null
38endif
39
40FIXDEP := $(OUTPUT)fixdep
41FIXDEP_IN := $(OUTPUT)fixdep-in.o
42
43# To track fixdep's dependencies properly, fixdep needs to run on itself.
44# Build it twice the first time.
45$(FIXDEP_IN): FORCE
46 $(Q)if [ ! -f $(FIXDEP) ]; then \
47 $(MAKE) $(build)=fixdep HOSTCFLAGS="$(KBUILD_HOSTCFLAGS)"; \
48 rm -f $(FIXDEP).o; \
49 fi
50 $(Q)$(MAKE) $(build)=fixdep HOSTCFLAGS="$(KBUILD_HOSTCFLAGS)"
51
52
53$(FIXDEP): $(FIXDEP_IN)
54 $(QUIET_LINK)$(HOSTCC) $(FIXDEP_IN) $(KBUILD_HOSTLDFLAGS) -o $@
55
56FORCE:
57
58.PHONY: FORCE