Makefile - platform/external/nsjail - Git at Google

 #
 #   nsjail - Makefile
 #   -----------------------------------------
 #
 #   Copyright 2014 Google Inc. All Rights Reserved.
 #
 #   Licensed under the Apache License, Version 2.0 (the "License");
 #   you may not use this file except in compliance with the License.
 #   You may obtain a copy of the License at
 #
 #     http://www.apache.org/licenses/LICENSE-2.0
 #
 #   Unless required by applicable law or agreed to in writing, software
 #   distributed under the License is distributed on an "AS IS" BASIS,
 #   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 #   See the License for the specific language governing permissions and
 #   limitations under the License.

 PKG_CONFIG=$(shell which pkg-config)
 ifeq ($(PKG_CONFIG),)
 $(error "Install pkg-config to make it work")
 endif

 CC ?= gcc
 CXX ?= g++

 COMMON_FLAGS += -O2 -c \
 	-D_GNU_SOURCE -D_FILE_OFFSET_BITS=64 \
 	-fPIE \
 	-Wformat -Wformat-security -Wno-format-nonliteral \
 	-Wall -Wextra -Werror \
 	-Ikafel/include

 CXXFLAGS += $(COMMON_FLAGS) $(shell pkg-config --cflags protobuf) \
 	-std=c++11 -fno-exceptions -Wno-unused -Wno-unused-parameter
 LDFLAGS += -pie -Wl,-z,noexecstack -lpthread $(shell pkg-config --libs protobuf)

 BIN = nsjail
 LIBS = kafel/libkafel.a
 SRCS_CXX = caps.cc cgroup.cc cmdline.cc config.cc contain.cc cpu.cc logs.cc mnt.cc net.cc nsjail.cc pid.cc sandbox.cc subproc.cc uts.cc user.cc util.cc
 SRCS_PROTO = config.proto
 SRCS_PB_CXX = $(SRCS_PROTO:.proto=.pb.cc)
 SRCS_PB_H = $(SRCS_PROTO:.proto=.pb.h)
 SRCS_PB_O = $(SRCS_PROTO:.proto=.pb.o)
 OBJS = $(SRCS_CXX:.cc=.o) $(SRCS_PB_CXX:.cc=.o)

 ifdef DEBUG
 	CXXFLAGS += -g -ggdb -gdwarf-4
 endif

 USE_NL3 ?= yes
 ifeq ($(USE_NL3), yes)
 NL3_EXISTS := $(shell pkg-config --exists libnl-route-3.0 && echo yes)
 ifeq ($(NL3_EXISTS), yes)
 	CXXFLAGS += -DNSJAIL_NL3_WITH_MACVLAN $(shell pkg-config --cflags libnl-route-3.0)
 	LDFLAGS += $(shell pkg-config --libs libnl-route-3.0)
 endif
 endif

 .PHONY: all clean depend indent

 .cc.o: %.cc
 	$(CXX) $(CXXFLAGS) $< -o $@

 all: $(BIN)

 $(BIN): $(LIBS) $(OBJS)
 ifneq ($(NL3_EXISTS), yes)
 	$(warning "==========================================================")
 	$(warning "No support for libnl3/libnl-route-3; /sbin/ip will be used")
 	$(warning "==========================================================")
 endif
 	$(CXX) -o $(BIN) $(OBJS) $(LIBS) $(LDFLAGS)

 kafel/libkafel.a:
 ifeq ("$(wildcard kafel/Makefile)","")
 	git submodule update --init
 endif
 	$(MAKE) -C kafel

 # Sequence of proto deps, which doesn't fit automatic make rules
 config.o: $(SRCS_PB_O) $(SRCS_PB_H)
 $(SRCS_PB_O): $(SRCS_PB_CXX) $(SRCS_PB_H)
 $(SRCS_PB_CXX) $(SRCS_PB_H): $(SRCS_PROTO)
 	protoc --cpp_out=. $(SRCS_PROTO)

 .PHONY: clean
 clean:
 	$(RM) core Makefile.bak $(OBJS) $(SRCS_PB_CXX) $(SRCS_PB_H) $(BIN)
 ifneq ("$(wildcard kafel/Makefile)","")
 	$(MAKE) -C kafel clean
 endif

 .PHONY: depend
 depend: all
 	makedepend -Y -Ykafel/include -- -- $(SRCS_CXX) $(SRCS_PB_CXX)

 .PHONY: indent
 indent:
 	clang-format -style="{BasedOnStyle: google, IndentWidth: 8, UseTab: Always, IndentCaseLabels: false, ColumnLimit: 100, AlignAfterOpenBracket: false, AllowShortFunctionsOnASingleLine: false}" -i -sort-includes *.h $(SRCS_CXX)
 	clang-format -style="{BasedOnStyle: google, IndentWidth: 4, UseTab: Always, ColumnLimit: 100}" -i $(SRCS_PROTO)

 # DO NOT DELETE THIS LINE -- make depend depends on it.

 caps.o: caps.h nsjail.h logs.h macros.h util.h
 cgroup.o: cgroup.h nsjail.h logs.h util.h
 cmdline.o: cmdline.h nsjail.h caps.h config.h logs.h macros.h mnt.h user.h
 cmdline.o: util.h
 config.o: caps.h nsjail.h cmdline.h config.h config.pb.h logs.h macros.h
 config.o: mnt.h user.h util.h
 contain.o: contain.h nsjail.h caps.h cgroup.h cpu.h logs.h macros.h mnt.h
 contain.o: net.h pid.h user.h util.h uts.h
 cpu.o: cpu.h nsjail.h logs.h util.h
 logs.o: logs.h macros.h util.h nsjail.h
 mnt.o: mnt.h nsjail.h logs.h macros.h subproc.h util.h
 net.o: net.h nsjail.h logs.h subproc.h
 nsjail.o: nsjail.h cmdline.h logs.h macros.h net.h sandbox.h subproc.h util.h
 pid.o: pid.h nsjail.h logs.h subproc.h
 sandbox.o: sandbox.h nsjail.h kafel/include/kafel.h logs.h
 subproc.o: subproc.h nsjail.h cgroup.h contain.h logs.h macros.h net.h
 subproc.o: sandbox.h user.h util.h
 uts.o: uts.h nsjail.h logs.h
 user.o: user.h nsjail.h logs.h macros.h subproc.h util.h
 util.o: util.h nsjail.h logs.h macros.h
 config.pb.o: config.pb.h
	#
	# nsjail - Makefile
	# -----------------------------------------
	#
	# Copyright 2014 Google Inc. All Rights Reserved.
	#
	# Licensed under the Apache License, Version 2.0 (the "License");
	# you may not use this file except in compliance with the License.
	# You may obtain a copy of the License at
	#
	# http://www.apache.org/licenses/LICENSE-2.0
	#
	# Unless required by applicable law or agreed to in writing, software
	# distributed under the License is distributed on an "AS IS" BASIS,
	# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	# See the License for the specific language governing permissions and
	# limitations under the License.

	PKG_CONFIG=$(shell which pkg-config)
	ifeq ($(PKG_CONFIG),)
	$(error "Install pkg-config to make it work")
	endif

	CC ?= gcc
	CXX ?= g++

	COMMON_FLAGS += -O2 -c \
	-D_GNU_SOURCE -D_FILE_OFFSET_BITS=64 \
	-fPIE \
	-Wformat -Wformat-security -Wno-format-nonliteral \
	-Wall -Wextra -Werror \
	-Ikafel/include

	CXXFLAGS += $(COMMON_FLAGS) $(shell pkg-config --cflags protobuf) \
	-std=c++11 -fno-exceptions -Wno-unused -Wno-unused-parameter
	LDFLAGS += -pie -Wl,-z,noexecstack -lpthread $(shell pkg-config --libs protobuf)

	BIN = nsjail
	LIBS = kafel/libkafel.a
	SRCS_CXX = caps.cc cgroup.cc cmdline.cc config.cc contain.cc cpu.cc logs.cc mnt.cc net.cc nsjail.cc pid.cc sandbox.cc subproc.cc uts.cc user.cc util.cc
	SRCS_PROTO = config.proto
	SRCS_PB_CXX = $(SRCS_PROTO:.proto=.pb.cc)
	SRCS_PB_H = $(SRCS_PROTO:.proto=.pb.h)
	SRCS_PB_O = $(SRCS_PROTO:.proto=.pb.o)
	OBJS = $(SRCS_CXX:.cc=.o) $(SRCS_PB_CXX:.cc=.o)

	ifdef DEBUG
	CXXFLAGS += -g -ggdb -gdwarf-4
	endif

	USE_NL3 ?= yes
	ifeq ($(USE_NL3), yes)
	NL3_EXISTS := $(shell pkg-config --exists libnl-route-3.0 && echo yes)
	ifeq ($(NL3_EXISTS), yes)
	CXXFLAGS += -DNSJAIL_NL3_WITH_MACVLAN $(shell pkg-config --cflags libnl-route-3.0)
	LDFLAGS += $(shell pkg-config --libs libnl-route-3.0)
	endif
	endif

	.PHONY: all clean depend indent

	.cc.o: %.cc
	$(CXX) $(CXXFLAGS) $< -o $@

	all: $(BIN)

	$(BIN): $(LIBS) $(OBJS)
	ifneq ($(NL3_EXISTS), yes)
	$(warning "==========================================================")
	$(warning "No support for libnl3/libnl-route-3; /sbin/ip will be used")
	$(warning "==========================================================")
	endif
	$(CXX) -o $(BIN) $(OBJS) $(LIBS) $(LDFLAGS)

	kafel/libkafel.a:
	ifeq ("$(wildcard kafel/Makefile)","")
	git submodule update --init
	endif
	$(MAKE) -C kafel

	# Sequence of proto deps, which doesn't fit automatic make rules
	config.o: $(SRCS_PB_O) $(SRCS_PB_H)
	$(SRCS_PB_O): $(SRCS_PB_CXX) $(SRCS_PB_H)
	$(SRCS_PB_CXX) $(SRCS_PB_H): $(SRCS_PROTO)
	protoc --cpp_out=. $(SRCS_PROTO)

	.PHONY: clean
	clean:
	$(RM) core Makefile.bak $(OBJS) $(SRCS_PB_CXX) $(SRCS_PB_H) $(BIN)
	ifneq ("$(wildcard kafel/Makefile)","")
	$(MAKE) -C kafel clean
	endif

	.PHONY: depend
	depend: all
	makedepend -Y -Ykafel/include -- -- $(SRCS_CXX) $(SRCS_PB_CXX)

	.PHONY: indent
	indent:
	clang-format -style="{BasedOnStyle: google, IndentWidth: 8, UseTab: Always, IndentCaseLabels: false, ColumnLimit: 100, AlignAfterOpenBracket: false, AllowShortFunctionsOnASingleLine: false}" -i -sort-includes *.h $(SRCS_CXX)
	clang-format -style="{BasedOnStyle: google, IndentWidth: 4, UseTab: Always, ColumnLimit: 100}" -i $(SRCS_PROTO)

	# DO NOT DELETE THIS LINE -- make depend depends on it.

	caps.o: caps.h nsjail.h logs.h macros.h util.h
	cgroup.o: cgroup.h nsjail.h logs.h util.h
	cmdline.o: cmdline.h nsjail.h caps.h config.h logs.h macros.h mnt.h user.h
	cmdline.o: util.h
	config.o: caps.h nsjail.h cmdline.h config.h config.pb.h logs.h macros.h
	config.o: mnt.h user.h util.h
	contain.o: contain.h nsjail.h caps.h cgroup.h cpu.h logs.h macros.h mnt.h
	contain.o: net.h pid.h user.h util.h uts.h
	cpu.o: cpu.h nsjail.h logs.h util.h
	logs.o: logs.h macros.h util.h nsjail.h
	mnt.o: mnt.h nsjail.h logs.h macros.h subproc.h util.h
	net.o: net.h nsjail.h logs.h subproc.h
	nsjail.o: nsjail.h cmdline.h logs.h macros.h net.h sandbox.h subproc.h util.h
	pid.o: pid.h nsjail.h logs.h subproc.h
	sandbox.o: sandbox.h nsjail.h kafel/include/kafel.h logs.h
	subproc.o: subproc.h nsjail.h cgroup.h contain.h logs.h macros.h net.h
	subproc.o: sandbox.h user.h util.h
	uts.o: uts.h nsjail.h logs.h
	user.o: user.h nsjail.h logs.h macros.h subproc.h util.h
	util.o: util.h nsjail.h logs.h macros.h
	config.pb.o: config.pb.h