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 59