tools/build/Makefile

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