# 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.

USE_LEVELDB:=0
USE_IPV6:=1
ARCH:=$(uname -m)

# CC:=clang
# CXX:=clang++

LINK:=$(CXX)

DEFS=-DBOOST_SPIRIT_THREADSAFE -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS

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

LMODE = dynamic
LMODE2 = dynamic
ifdef STATIC
	LMODE = static
	ifeq (${STATIC}, all)
		LMODE2 = static
	endif
endif

# for boost 1.37, add -mt to the boost libraries
LIBS += \
 -Wl,-B$(LMODE) \
   -l boost_system$(BOOST_LIB_SUFFIX) \
   -l boost_filesystem$(BOOST_LIB_SUFFIX) \
   -l boost_program_options$(BOOST_LIB_SUFFIX) \
   -l boost_thread$(BOOST_LIB_SUFFIX) \
   -l db_cxx$(BDB_LIB_SUFFIX) \
   -l ssl \
   -l crypto \
   -l execinfo

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

LIBS+= \
 -Wl,-B$(LMODE2) \
   -l z \
   -l pthread


# 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
#


DEBUGFLAGS=-g

ifeq (${ARCH}, i386)
    EXT_OPTIONS=-msse2
endif

xOPT_LEVEL=-O2
ifeq (${USE_O3}, 1)
    xOPT_LEVEL=-O3
endif

# CXXFLAGS can be specified on the make command line, so we use xCXXFLAGS that only
# adds some defaults in front. Unfortunately, CXXFLAGS=... $(CXXFLAGS) does not work.
xCXXFLAGS=$(xOPT_LEVEL) $(EXT_OPTIONS) -pthread -Wall -Wextra -Wno-ignored-qualifiers -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= \
    obj/alert.o \
    obj/version.o \
    obj/checkpoints.o \
    obj/netbase.o \
    obj/addrman.o \
    obj/crypter.o \
    obj/base58.o \
    obj/key.o \
    obj/db.o \
    obj/init.o \
    obj/irc.o \
    obj/keystore.o \
    obj/main.o \
    obj/miner.o \
    obj/net.o \
    obj/ntp.o \
    obj/stun.o \
    obj/protocol.o \
    obj/bitcoinrpc.o \
    obj/rpccrypt.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/noui.o \
    obj/kernel.o \
    obj/kernel_worker.o \
    obj/ecies.o \
    obj/cryptogram.o \
    obj/ipcollector.o

all: novacoind

#
# LevelDB support
#
ifeq (${USE_LEVELDB}, 1)
LIBS += $(CURDIR)/leveldb/libleveldb.a $(CURDIR)/leveldb/libmemenv.a
DEFS += $(addprefix -I,$(CURDIR)/leveldb/include) -DUSE_LEVELDB
DEFS += $(addprefix -I,$(CURDIR)/leveldb/helpers)
OBJS += obj/txdb-leveldb.o
leveldb/libleveldb.a:
	@echo "Building LevelDB ..."; cd leveldb; CC=$(CC) CXX=$(CXX) gmake libleveldb.a libmemenv.a; cd ..;
obj/txdb-leveldb.o: leveldb/libleveldb.a
endif
ifneq (${USE_LEVELDB}, 1)
OBJS += obj/txdb-bdb.o
endif

ifeq (${USE_ASM}, 1)

DEFS += -DUSE_ASM

# Assembler implementation
OBJS += crypto/scrypt/asm/obj/scrypt-arm.o crypto/scrypt/asm/obj/scrypt-x86.o crypto/scrypt/asm/obj/scrypt-x86_64.o crypto/scrypt/asm/obj/asm-wrapper.o

crypto/scrypt/asm/obj/scrypt-x86.o: crypto/scrypt/asm/scrypt-x86.S
	$(CXX) -c $(xCXXFLAGS) -MMD -o $@ $<

crypto/scrypt/asm/obj/scrypt-x86_64.o: crypto/scrypt/asm/scrypt-x86_64.S
	$(CXX) -c $(xCXXFLAGS) -MMD -o $@ $<

crypto/scrypt/asm/obj/scrypt-arm.o: crypto/scrypt/asm/scrypt-arm.S
	$(CXX) -c $(xCXXFLAGS) -MMD -o $@ $<

crypto/scrypt/asm/obj/asm-wrapper.o: crypto/scrypt/asm/asm-wrapper.cpp
	$(CXX) -c $(xCXXFLAGS) -MMD -o $@ $<

else
ifeq  (${USE_SSE2}, 1)
# Intrinsic implementation
DEFS += -DUSE_SSE2
OBJS += crypto/scrypt/intrin/obj/scrypt-sse2.o

crypto/scrypt/intrin/obj/scrypt-sse2.o: crypto/scrypt/intrin/scrypt-sse2.cpp
	$(CXX) -c $(xCXXFLAGS) -MMD -o $@ $<
else
# Generic implementation
OBJS += crypto/scrypt/generic/obj/scrypt-generic.o

crypto/scrypt/generic/obj/scrypt-generic.o: crypto/scrypt/generic/scrypt-generic.cpp
	$(CXX) -c $(xCXXFLAGS) -MMD -o $@ $<
endif
endif

# auto-generated dependencies:
-include obj/*.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)

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

clean:
	-rm -f novacoind
	-rm -f obj/*.o
	-rm -f obj/*.P
	-rm -f obj/*.d
	-rm -f crypto/scrypt/asm/obj/*.o
	-rm -f crypto/scrypt/asm/obj/*.P
	-rm -f crypto/scrypt/asm/obj/*.d
	-rm -f crypto/scrypt/intrin/obj/*.o
	-rm -f crypto/scrypt/intrin/obj/*.P
	-rm -f crypto/scrypt/intrin/obj/*.d
	-rm -f crypto/scrypt/generic/obj/*.o
	-rm -f crypto/scrypt/generic/obj/*.P
	-rm -f crypto/scrypt/generic/obj/*.d
	-rm -f obj/build.h

FORCE: