1.PHONY: all 2all: _all 3 4# disable built-in rules 5.SUFFIXES: 6 7# setup some variables 8ROOTDIR := $(dir $(lastword $(MAKEFILE_LIST))) 9ROOTDIR := $(dir $(ROOTDIR:%../src/=%))../ 10BUILDDIR ?= $(abspath $(ROOTDIR)build) 11BUILDDIR := $(BUILDDIR:%/=%) 12ABSROOT := $(abspath $(ROOTDIR)) 13ifeq ($(origin OUT),command line) 14_PROJ := $(OUT:%/=%) 15_PROJ := $(_PROJ:$(BUILDDIR)/%=%) 16else 17_PROJ := $(abspath $(dir $(firstword $(MAKEFILE_LIST)))) 18_PROJ := $(_PROJ:$(ABSROOT)/%=%) 19endif 20 21ifndef CC 22CC=gcc 23endif 24 25ifndef RANLIB 26RANLIB=ranlib 27endif 28 29ifndef LDO 30LDO=$(CC) 31endif 32 33ifndef CFLAGS 34CFLAGS = -MMD -O2 -Wall -g 35endif 36 37ifneq ($(CONFIG_FILE),) 38-include $(CONFIG_FILE) 39 40# export for sub-makefiles 41export CONFIG_CODE_COVERAGE 42 43.PHONY: verify_config 44verify_config: 45 @if [ ! -r $(CONFIG_FILE) ]; then \ 46 echo 'Building $(firstword $(ALL)) requires a configuration file'; \ 47 echo '(.config). See README for more instructions. You can'; \ 48 echo 'run "cp defconfig .config" to create an example'; \ 49 echo 'configuration.'; \ 50 exit 1; \ 51 fi 52VERIFY := verify_config 53else 54VERIFY := 55endif 56 57# default target 58.PHONY: _all 59_all: $(VERIFY) $(ALL) $(EXTRA_TARGETS) 60 61# continue setup 62COVSUFFIX := $(if $(CONFIG_CODE_COVERAGE),-cov,) 63PROJ := $(_PROJ)$(COVSUFFIX) 64 65Q=@ 66E=echo 67ifeq ($(V), 1) 68Q= 69E=true 70endif 71ifeq ($(QUIET), 1) 72Q=@ 73E=true 74endif 75 76ifeq ($(Q),@) 77MAKEFLAGS += --no-print-directory 78endif 79 80_DIRS := $(BUILDDIR)/$(PROJ) 81.PHONY: _make_dirs 82_make_dirs: 83 @mkdir -p $(_DIRS) 84 85$(BUILDDIR)/$(PROJ)/src/%.o: $(ROOTDIR)src/%.c $(CONFIG_FILE) | _make_dirs 86 $(Q)$(CC) -c -o $@ $(CFLAGS) $< 87 @$(E) " CC " $< 88$(BUILDDIR)/$(PROJ)/%.o: %.c $(CONFIG_FILE) | _make_dirs 89 $(Q)$(CC) -c -o $@ $(CFLAGS) $< 90 @$(E) " CC " $< 91# for the fuzzing tests 92$(BUILDDIR)/$(PROJ)/wpa_supplicant/%.o: $(ROOTDIR)wpa_supplicant/%.c $(CONFIG_FILE) | _make_dirs 93 $(Q)$(CC) -c -o $@ $(CFLAGS) $< 94 @$(E) " CC " $< 95 96# libraries - they know how to build themselves 97# (lib_phony so we recurse all the time) 98.PHONY: lib_phony 99lib_phony: 100# nothing 101 102$(BUILDDIR)/$(PROJ)/%.a: $(CONFIG_FILE) lib_phony 103 $(Q)$(MAKE) -C $(ROOTDIR)$(dir $(@:$(BUILDDIR)/$(PROJ)/%=%)) OUT=$(abspath $(dir $@))/ 104 105BUILDOBJ = $(patsubst %,$(BUILDDIR)/$(PROJ)/%,$(patsubst $(ROOTDIR)%,%,$(1))) 106 107.PHONY: common-clean 108common-clean: 109 $(Q)rm -rf $(ALL) $(BUILDDIR)/$(PROJ) 110