SHELL=/bin/bash

CXXFLAGS = -DNDEBUG -g -O2
#CXXFLAGS = -g
# -fPIC is supported. Please report any breakage of -fPIC as a bug.
CXXFLAGS += -fPIC
# the following options reduce code size, but breaks link or makes link very slow on some systems
CXXFLAGS += -ffunction-sections -fdata-sections
# LDFLAGS += -Wl,--gc-sections
ARFLAGS = -cr	# ar needs the dash on OpenBSD
RANLIB = ranlib
CP = cp
MKDIR = mkdir
EGREP = egrep
UNAME = $(shell uname)
ISX86 = $(shell uname -m | $(EGREP) -c "i.86|x86|i86|amd64")
BUILDVERSION="Building libcryptopp.a"


# Default prefix for make install
ifeq ($(PREFIX),)
PREFIX = /usr
endif

# VALVE: Add support for debug builds if we need them
ifeq ($(MAKE_DEBUG),1)
 OPTIMIZER_FLAGS=-g -ggdb
else
 OPTIMIZER_FLAGS=-O2
endif

ifeq ($(CXX),gcc)	# for some reason CXX is gcc on cygwin 1.1.4
CXX = g++
endif


# VALVE: Some defaults to match the rest of the steam build
CXXFLAGS += $(OPTIMIZER_FLAGS) -fvisibility=hidden -w


# If we're building this for STEAMCMD, then we use the Valve compile tools
ifeq ($(STEAMCMD),1)
  BUILDVERSION="Building libcryptopp.a for SteamCMD"
  CXX = /valve/bin/g++
  BINDIR  =linux32
else
# Otherwise we're building for STEAM, so use the native compile tools
  BUILDVERSION="Building libcryptopp.a for Steam"
  CXX = /usr/bin/g++
  BINDIR  =ubuntu12_32
endif 

# on linux x86_64, use valve's compiler (and make sure not to specify -m32 in CXXFLAGS above"
#CXX = /valve/gcc-4.5.1-glibc-2.9/x86_64-valve-linux-gnu/bin/x86_64-valve-linux-gnu-g++
#BINDIR = linux64

ifeq ($(ISX86),1)

GCC42_OR_LATER = $(shell $(CXX) -v 2>&1 | $(EGREP) -c "^gcc version (4.[2-9]|[5-9])")
INTEL_COMPILER = $(shell $(CXX) --version 2>&1 | $(EGREP) -c "\(ICC\)")
ICC111_OR_LATER = $(shell $(CXX) --version 2>&1 | $(EGREP) -c "\(ICC\) ([2-9][0-9]|1[2-9]|11\.[1-9])")
IS_SUN_CC = $(shell $(CXX) -V 2>&1 | $(EGREP) -c "CC: Sun")
GAS210_OR_LATER = $(shell echo "" | $(AS) -v 2>&1 | $(EGREP) -c "GNU assembler version (2\.[1-9][0-9]|[3-9])")
GAS217_OR_LATER = $(shell echo "" | $(AS) -v 2>&1 | $(EGREP) -c "GNU assembler version (2\.1[7-9]|2\.[2-9]|[3-9])")
GAS219_OR_LATER = $(shell echo "" | $(AS) -v 2>&1 | $(EGREP) -c "GNU assembler version (2\.19|2\.[2-9]|[3-9])")
ISMINGW = $(shell $(CXX) --version 2>&1 | $(EGREP) -c "mingw")

ifneq ($(GCC42_OR_LATER),0)
ifeq ($(UNAME),Darwin)
CXXFLAGS += -arch x86_64 -arch i386
else
CXXFLAGS += -march=pentium4
endif
endif

ifneq ($(INTEL_COMPILER),0)
CXXFLAGS += -wd68 -wd186 -wd279 -wd327
ifeq ($(ICC111_OR_LATER),0)
# "internal error: backend signals" occurs on some x86 inline assembly with ICC 9 and some x64 inline assembly with ICC 11.0
# if you want to use Crypto++'s assembly code with ICC, try enabling it on individual files
CXXFLAGS += -DCRYPTOPP_DISABLE_ASM
endif
endif

ifeq ($(GAS210_OR_LATER),0)	# .intel_syntax wasn't supported until GNU assembler 2.10
CXXFLAGS += -DCRYPTOPP_DISABLE_ASM
else
ifeq ($(GAS217_OR_LATER),0)
CXXFLAGS += -DCRYPTOPP_DISABLE_SSSE3
else
ifeq ($(GAS219_OR_LATER),0)
CXXFLAGS += -DCRYPTOPP_DISABLE_AESNI
endif
endif
ifeq ($(UNAME),SunOS)
CXXFLAGS += -Wa,--divide	# allow use of "/" operator
endif
endif

ifeq ($(ISMINGW),1)
LDLIBS += -lws2_32
endif

endif	# ISX86

ifeq ($(UNAME),)	# for DJGPP, where uname doesn't exist
CXXFLAGS += -mbnu210
else
CXXFLAGS += -pipe
endif

ifeq ($(UNAME),Linux)
LDFLAGS += -pthread
ifneq ($(shell uname -i | $(EGREP) -c "(_64|d64)"),0)
M32OR64 = -m64
endif
endif

ifeq ($(UNAME),Darwin)
AR = libtool
ARFLAGS = -static -o
# VALVE: Mac build compatibility
CXX = clang++
#CXX = g++-4.2
CXXFLAGS += -arch x86_64 -arch i386
CXXFLAGS += -mmacosx-version-min=10.7
CXXFLAGS += -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.10.sdk
BINDIR = common/osx32
CXXFLAGS += -std=c++11 -stdlib=libc++
#CXXFLAGS += -fno-coalesce-templates -fno-coalesce-static-vtables
#LDLIBS += -lstdc++
LDFLAGS += -stdlib=libc++
endif

ifeq ($(UNAME),SunOS)
LDLIBS += -lnsl -lsocket
M32OR64 = -m$(shell isainfo -b)
endif

ifneq ($(IS_SUN_CC),0)	# override flags for CC Sun C++ compiler
CXXFLAGS = -DNDEBUG -O -g0 -native -template=no%extdef $(M32OR64)
LDFLAGS =
AR = $(CXX)
ARFLAGS = -xar -o
RANLIB = true
SUN_CC10_BUGGY = $(shell $(CXX) -V 2>&1 | $(EGREP) -c "CC: Sun .* 5\.10 .* (2009|2010/0[1-4])")
ifneq ($(SUN_CC10_BUGGY),0)
# -DCRYPTOPP_INCLUDE_VECTOR_CC is needed for Sun Studio 12u1 Sun C++ 5.10 SunOS_i386 128229-02 2009/09/21 and was fixed in May 2010
# remove it if you get "already had a body defined" errors in vector.cc
CXXFLAGS += -DCRYPTOPP_INCLUDE_VECTOR_CC
endif
endif

SRCS = $(wildcard *.cpp)
ifeq ($(SRCS),)				# workaround wildcard function bug in GNU Make 3.77
SRCS = $(shell echo *.cpp)
endif

OBJS = $(SRCS:.cpp=.o)
# test.o needs to be after bench.o for cygwin 1.1.4 (possible ld bug?)
TESTOBJS = bench.o bench2.o test.o validat1.o validat2.o validat3.o adhoc.o datatest.o regtest.o fipsalgt.o dlltest.o
LIBOBJS = $(filter-out $(TESTOBJS),$(OBJS))

DLLSRCS = algebra.cpp algparam.cpp asn.cpp basecode.cpp cbcmac.cpp channels.cpp cryptlib.cpp des.cpp dessp.cpp dh.cpp dll.cpp dsa.cpp ec2n.cpp eccrypto.cpp ecp.cpp eprecomp.cpp files.cpp filters.cpp fips140.cpp fipstest.cpp gf2n.cpp gfpcrypt.cpp hex.cpp hmac.cpp integer.cpp iterhash.cpp misc.cpp modes.cpp modexppc.cpp mqueue.cpp nbtheory.cpp oaep.cpp osrng.cpp pch.cpp pkcspad.cpp pubkey.cpp queue.cpp randpool.cpp rdtables.cpp rijndael.cpp rng.cpp rsa.cpp sha.cpp simple.cpp skipjack.cpp strciphr.cpp trdlocal.cpp
DLLOBJS = $(DLLSRCS:.cpp=.export.o)
LIBIMPORTOBJS = $(LIBOBJS:.o=.import.o)
TESTIMPORTOBJS = $(TESTOBJS:.o=.import.o)
DLLTESTOBJS = dlltest.dllonly.o

#VALVE: We only really need to build libcryptopp.a on Linux and Mac
all: start_status libcryptopp.a end_status

test: cryptest.exe
	./cryptest.exe v

clean:
	$(RM) cryptest.exe libcryptopp.a $(LIBOBJS) $(TESTOBJS) cryptopp.dll libcryptopp.dll.a libcryptopp.import.a cryptest.import.exe dlltest.exe $(DLLOBJS) $(LIBIMPORTOBJS) $(TESTIMPORTOBJS) $(DLLTESTOBJS)

install:
	$(MKDIR) -p $(PREFIX)/include/cryptopp $(PREFIX)/lib $(PREFIX)/bin
	$(CP) *.h $(PREFIX)/include/cryptopp
	$(CP) *.a $(PREFIX)/lib
	$(CP) *.so $(PREFIX)/lib
	$(CP) *.exe $(PREFIX)/bin

libcryptopp.a: $(LIBOBJS)
	$(AR) $(ARFLAGS) $@ $(LIBOBJS)
	$(RANLIB) $@
#VALVE: Copy the file into the right spot. This doesn't handle perforce, you need to do that yourself.
	$(CP) libcryptopp.a ../../lib/$(BINDIR)/release

libcryptopp.so: $(LIBOBJS)
	$(CXX) -shared -o $@ $(LIBOBJS)

cryptest.exe: libcryptopp.a $(TESTOBJS)
	$(CXX) -o $@ $(CXXFLAGS) $(TESTOBJS) -L. -lcryptopp $(LDFLAGS) $(LDLIBS)

nolib: $(OBJS)		# makes it faster to test changes
	$(CXX) -o ct $(CXXFLAGS) $(OBJS) $(LDFLAGS) $(LDLIBS)

dll: cryptest.import.exe dlltest.exe

cryptopp.dll: $(DLLOBJS)
	$(CXX) -shared -o $@ $(CXXFLAGS) $(DLLOBJS) $(LDFLAGS) $(LDLIBS) -Wl,--out-implib=libcryptopp.dll.a

libcryptopp.import.a: $(LIBIMPORTOBJS)
	$(AR) $(ARFLAGS) $@ $(LIBIMPORTOBJS)
	$(RANLIB) $@

cryptest.import.exe: cryptopp.dll libcryptopp.import.a $(TESTIMPORTOBJS)
	$(CXX) -o $@ $(CXXFLAGS) $(TESTIMPORTOBJS) -L. -lcryptopp.dll -lcryptopp.import $(LDFLAGS) $(LDLIBS)

dlltest.exe: cryptopp.dll $(DLLTESTOBJS)
	$(CXX) -o $@ $(CXXFLAGS) $(DLLTESTOBJS) -L. -lcryptopp.dll $(LDFLAGS) $(LDLIBS)

adhoc.cpp: adhoc.cpp.proto
ifeq ($(wildcard adhoc.cpp),)
	cp adhoc.cpp.proto adhoc.cpp
else
	touch adhoc.cpp
endif

%.dllonly.o : %.cpp
	$(CXX) $(CXXFLAGS) -DCRYPTOPP_DLL_ONLY -c $< -o $@

%.import.o : %.cpp
	$(CXX) $(CXXFLAGS) -DCRYPTOPP_IMPORTS -c $< -o $@

%.export.o : %.cpp
	$(CXX) $(CXXFLAGS) -DCRYPTOPP_EXPORTS -c $< -o $@

%.o : %.cpp
	$(CXX) $(CXXFLAGS) -c $<

# Verify the options.
start_status:
	@echo $(BUILDVERSION);
	@if [ "$(MAKE_DEBUG)" == "1" ]; then\
		echo ""; \
		echo ""; \
		echo "NOTE: Relevant environment variables detected.";\
		if [ "$(MAKE_DEBUG)" == "1" ]; then\
			echo "    MAKE_DEBUG was found so optimizations will be reduced.";\
			echo "";\
			echo "";\
		fi;\
	fi

end_status:
	@if [ "$(MAKE_DEBUG)" == "1" ]; then\
		echo ""; \
		echo ""; \
		echo "NOTE: MAKE_DEBUG was found so a debug build was made.";\
		echo ""; \
		echo ""; \
	fi