# Copyright (c) 2009-2010 Satoshi Nakamoto
# Distributed under the MIT/X11 software license, see the accompanying
# file COPYING or http://www.opensource.org/licenses/mit-license.php.

# :=1 --> Enable IPv6 support
# :=0 --> Disable IPv6 support
USE_IPV6:=1
USE_DEBUG:=0

LINK:=$(CXX)

DEFS=-DBOOST_SPIRIT_THREADSAFE -DBOOST_NO_CXX11_SCOPED_ENUMS -DBOOST_ASIO_ENABLE_OLD_SERVICES -D_FILE_OFFSET_BITS=64 -DUSE_NATIVE_I2P

DEFS += $(addprefix -I,$(CURDIR) $(CURDIR)/obj $(CURDIR)/i2psam $(BOOST_INCLUDE_PATH) $(BDB_INCLUDE_PATH) $(OPENSSL_INCLUDE_PATH))
LIBS = $(addprefix -L,$(BOOST_LIB_PATH) $(BDB_LIB_PATH) $(OPENSSL_LIB_PATH))

TESTDEFS = -DTEST_DATA_DIR=$(abspath test/data)

LMODE = dynamic
LMODE2 = dynamic
ifdef STATIC
	LMODE = static
	ifeq (${STATIC}, all)
		LMODE2 = static
	endif
else
	TESTDEFS += -DBOOST_TEST_DYN_LINK
endif

# for boost 1.37, add -mt to the boost libraries
LIBS += \
	-Wl,-B$(LMODE) \
	-lboost_system$(BOOST_LIB_SUFFIX) \
	-lboost_filesystem$(BOOST_LIB_SUFFIX) \
	-lboost_program_options$(BOOST_LIB_SUFFIX) \
	-lboost_thread$(BOOST_LIB_SUFFIX) \
	-ldb_cxx$(BDB_LIB_SUFFIX) \
	-lssl \
	-lcrypto

TESTLIBS += \
	-Wl,-B$(LMODE) \
	-lboost_unit_test_framework$(BOOST_LIB_SUFFIX)

ifneq (${USE_IPV6}, -)
	DEFS += -DUSE_IPV6=$(USE_IPV6)
endif

LIBS += \
	-Wl,-B$(LMODE2) \
	-lz \
	-ldl \
	-lpthread

# Hardening
# Make some classes of vulnerabilities unexploitable in case one is discovered.
#
	# This is a workaround for Ubuntu bug #691722, the default -fstack-protector causes
	# -fstack-protector-all to be ignored unless -fno-stack-protector is used first.
	# see: https://bugs.launchpad.net/ubuntu/+source/gcc-4.5/+bug/691722
	HARDENING=-fno-stack-protector

	# Stack Canaries
	# Put numbers at the beginning of each stack frame and check that they are the same.
	# If a stack buffer if overflowed, it writes over the canary number and then on return
	# when that number is checked, it won't be the same and the program will exit with
	# a "Stack smashing detected" error instead of being exploited.
	HARDENING+=-fstack-protector-all -Wstack-protector

	# Make some important things such as the global offset table read only as soon as
	# the dynamic linker is finished building it. This will prevent overwriting of addresses
	# which would later be jumped to.
	LDHARDENING+=-Wl,-z,relro -Wl,-z,now

	# Build position independent code to take advantage of Address Space Layout Randomization
	# offered by some kernels.
	# see doc/build-unix.txt for more information.
	ifdef PIE
		HARDENING+=-fPIE
		LDHARDENING+=-pie
	endif

	# -D_FORTIFY_SOURCE=2 does some checking for potentially exploitable code patterns in
	# the source such overflowing a statically defined buffer.
	HARDENING+=-D_FORTIFY_SOURCE=2
#

ifneq (${USE_DEBUG}, 0)
	DEBUGFLAGS=-g
endif

# CXXFLAGS can be specified on the make command line, so we use xCXXFLAGS that only
# adds some defaults in front. Unfortunately, CXXFLAGS=... $(CXXFLAGS) does not work.
xCXXFLAGS = -std=c++11 -O2 -pthread -Wall -Wextra -Wformat -Wformat-security -Wno-unused-parameter \
	$(DEBUGFLAGS) $(DEFS) $(HARDENING) $(CXXFLAGS)

# LDFLAGS can be specified on the make command line, so we use xLDFLAGS that only
# adds some defaults in front. Unfortunately, LDFLAGS=... $(LDFLAGS) does not work.
xLDFLAGS=$(LDHARDENING) $(LDFLAGS)

OBJS = \
	leveldb/libleveldb.a \
	obj/alert.o \
	obj/version.o \
	obj/checkpoints.o \
	obj/netbase.o \
	obj/addrman.o \
	obj/crypter.o \
	obj/key.o \
	obj/db.o \
	obj/init.o \
	obj/keystore.o \
	obj/i2p.o \
	obj/i2psam.o \
	obj/Gost.o \
	obj/main.o \
	obj/net.o \
	obj/protocol.o \
	obj/bitcoinrpc.o \
	obj/rpcdump.o \
	obj/rpcnet.o \
	obj/rpcmining.o \
	obj/rpcwallet.o \
	obj/rpcblockchain.o \
	obj/rpcrawtransaction.o \
	obj/script.o \
	obj/sync.o \
	obj/util.o \
	obj/wallet.o \
	obj/walletdb.o \
	obj/hash.o \
	obj/bloom.o \
	obj/noui.o \
	obj/leveldb.o \
	obj/txdb.o

all: gostcoind

test check: test_gostcoin FORCE
	./test_gostcoin

#
# LevelDB support
#
MAKEOVERRIDES =
LIBS += $(CURDIR)/leveldb/libleveldb.a $(CURDIR)/leveldb/libmemenv.a
DEFS += $(addprefix -I,$(CURDIR)/leveldb/include)
DEFS += $(addprefix -I,$(CURDIR)/leveldb/helpers)

leveldb/libleveldb.a:
	@echo "Building LevelDB ..." && cd leveldb && $(MAKE) CC=$(CC) CXX=$(CXX) OPT="$(xCXXFLAGS)" libleveldb.a libmemenv.a && cd ..

# auto-generated dependencies:
-include obj/*.P
-include obj-test/*.P

obj/build.h: FORCE
	/bin/sh ../share/genbuild.sh obj/build.h

version.cpp: obj/build.h

DEFS += -DHAVE_BUILD_INFO

obj/%.o: %.cpp
	$(CXX) -c $(xCXXFLAGS) -MMD -MF $(@:%.o=%.d) -o $@ $<
	@cp $(@:%.o=%.d) $(@:%.o=%.P); \
		sed -e 's/#.*//' -e 's/^[^:]*: *//' -e 's/ *\\$$//' \
		-e '/^$$/ d' -e 's/$$/ :/' < $(@:%.o=%.d) >> $(@:%.o=%.P); \
		rm -f $(@:%.o=%.d)

obj/%.o: i2psam/%.cpp
	$(CXX) -c $(xCXXFLAGS) -MMD -MF $(@:%.o=%.d) -o $@ $<
	@cp $(@:%.o=%.d) $(@:%.o=%.P); \
		sed -e 's/#.*//' -e 's/^[^:]*: *//' -e 's/ *\\$$//' \
		-e '/^$$/ d' -e 's/$$/ :/' < $(@:%.o=%.d) >> $(@:%.o=%.P); \
		rm -f $(@:%.o=%.d)

gostcoind: $(OBJS:obj/%=obj/%)
	$(LINK) $(xCXXFLAGS) -o $@ $^ $(xLDFLAGS) $(LIBS)

TESTOBJS := $(patsubst test/%.cpp,obj-test/%.o,$(wildcard test/*.cpp))

obj-test/%.o: test/%.cpp
	$(CXX) -c $(TESTDEFS) $(xCXXFLAGS) -MMD -MF $(@:%.o=%.d) -o $@ $<
	@cp $(@:%.o=%.d) $(@:%.o=%.P); \
		sed -e 's/#.*//' -e 's/^[^:]*: *//' -e 's/ *\\$$//' \
		-e '/^$$/ d' -e 's/$$/ :/' < $(@:%.o=%.d) >> $(@:%.o=%.P); \
		rm -f $(@:%.o=%.d)

test_gostcoin: $(TESTOBJS) $(filter-out obj/init.o,$(OBJS:obj/%=obj/%))
	$(LINK) $(xCXXFLAGS) -o $@ $(LIBPATHS) $^ $(TESTLIBS) $(xLDFLAGS) $(LIBS)

clean:
	$(RM) -f gostcoind test_gostcoin
	$(RM) -f obj/*.o
	$(RM) -f obj-test/*.o
	$(RM) -f obj/*.P
	$(RM) -f obj-test/*.P
	$(RM) -f obj/build.h
	-cd leveldb && $(MAKE) clean || true

FORCE: