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config.mk
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config.mk
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# SPDX-License-Identifier: MIT
ARCH ?= $(shell uname -m | sed \
-e s/arm.*/arm/ \
-e s/aarch64.*/arm64/ \
-e s/x86_64/x86/ )
CROSS_COMPILE ?=
CC = $(CROSS_COMPILE)gcc
LD = $(CROSS_COMPILE)ld
AR = $(CROSS_COMPILE)ar
UAPI ?= /usr/include
DESTDIR ?= /usr/evl
INSTALL ?= install
INSTALL_PROGRAM ?= $(INSTALL)
INSTALL_DATA ?= $(INSTALL) -m 644
CP := cp
CPIO := cpio
RM := rm
LN_S := ln -sf
MKDIR_P := mkdir -p
RMDIR_SAFE := rmdir --ignore-fail-on-non-empty
libdir ?= lib
includedir ?= include
bindir ?= bin
testdir ?= tests
libexecdir ?= libexec
export ARCH CROSS_COMPILE CC LD AR UAPI CFLAGS LDFLAGS DESTDIR
MAKEFLAGS += -rR
ifneq ("$(origin O)", "command line")
O_DIR = $(CURDIR)
else
O_DIR := $(shell $(MKDIR_P) $(O) && cd $(O) && /bin/pwd)
endif
ifneq ("$(origin V)", "command line")
V = 0
endif
ifeq ($(V),1)
Q =
else
Q = @
MAKEFLAGS += --no-print-directory
endif
ifeq ($(D),1)
DEBUG_CPPFLAGS=
DEBUG_CFLAGS=-g -O0
else
DEBUG_CPPFLAGS=-U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
DEBUG_CFLAGS=-O2
endif
BASE_CPPFLAGS := -D_GNU_SOURCE -D_REENTRANT $(DEBUG_CPPFLAGS)
BASE_CFLAGS := -fasynchronous-unwind-tables -pipe -fstrict-aliasing \
-Wall -Wstrict-prototypes -Wmissing-prototypes -Wno-long-long \
-Wno-unused-parameter -Wshadow=local -Werror $(DEBUG_CFLAGS)
# Easy way to hide commas in args from $(call ...) invocations
comma := ,
ifneq ($(findstring s,$(filter-out --%,$(MAKEFLAGS))),)
quiet=y
endif
terse-echo = @$(if $(Q),echo " $(1) $(2)";)
define run-cmd
$(if $(quiet),,$(call terse-echo,$(1),$(2)))
$(Q)$(3)
endef
define run-cc
@$(MKDIR_P) $(dir $(2))
$(call run-cmd,$(1),$(notdir $(2)),$(3))
endef
cc-pic-cmd = $(call run-cc,CC-PIC,$(1),$(2))
cc-cmd = $(call run-cc,CC,$(1),$(2))
dep-cmd = $(call run-cc,DEP,$(1),$(2))
ccld-cmd = $(call run-cc,CCLD,$(1),$(2))
ld-cmd = $(call run-cmd,LD,$(notdir $(1)),$(2))
ar-cmd = $(call run-cmd,AR,$(notdir $(1)),$(2) $(if $(Q),2>/dev/null))
inst-cmd = $(call run-cmd,INST,$(notdir $(1)),$(2))
MAIN_GOALS := all clean clobber mrproper install
_all:
# Default target when no goal was given on the command line
_all: all
$(TARGETS):
$(Q)$(MAKE) -C $@ O=$(O_DIR)/$@ V=$(V)
$(O_DIR)/%.d: %.c
$(call dep-cmd,$@,@$(CC) -MM $(CFLAGS) $< | sed 's$(comma)\($*\)\.o[ :]*$(comma)$(O_DIR)/\1.o $@: $(comma)g' > $@ || rm -f $@)
define MAKEFLY =
# Automatically generated: do not edit
MAKEARGS := O=$(O_DIR) -C $(CURDIR) ARCH=$(ARCH) CROSS_COMPILE=$(CROSS_COMPILE) UAPI=$(UAPI) DESTDIR=$(DESTDIR)
$$(filter-out sub-make, $$(MAKECMDGOALS)): sub-make
@:
sub-make:
$$(MAKE) $$(MAKEARGS) $$(MAKECMDGOALS)
endef
# CURDIR is the source directory
export MAKEFLY
output-Makefile:
ifneq ($(O_DIR), $(CURDIR))
@if test \! -e $(O_DIR)/Makefile || grep -q Automatically $(O_DIR)/Makefile; then \
echo "$$MAKEFLY" > $(O_DIR)/Makefile; \
fi
endif
FORCE:
.PHONY: _all $(MAIN_GOALS) output-Makefile FORCE