On Jan 4, 2015, at 21:14 , Jeffrey Walton <[email protected]> wrote:
> Hi Mouse,
> 
> I'd suggest a couple of small corrections here…

Thank you!

> Change:
>     CXX=g++ 
> to:
>      CXX ?= g++ 
> 
> That keeps the makefile from stepping on the compiler set in the environment. 
> If its not set, then the  assignment is performed. Its particularly painful 
> when cross-compiling.

Great point! I’ll do that, and hope Jean-Pierre will do the same.

> Ditto for RANLIB.

Same.

> Change:
>     CLANG_COMPILER = $(shell $(CXX) --version 2>&1 | $(EGREP) -i -c "clang 
> version") 
> To:
>     CLANG_COMPILER = $(shell $(CXX) --version 2>&1 | $(EGREP) -i -c "clang”) 

Hmm, OK. Won’t impact me, as I don’t use non-Apple clang any more, but makes 
sense for the Crypto++ distro. 

> Apple uses "clang version", while building it from sources does not. So if 
> you built your own Clang or used one from a distro, then its usually 
> mis-identified.

Yeah… 

> You should make the above change and then try Mac OS X again and see if you 
> have the same problems with the assembler.

What do you mean? That I wouldn’t need to manually add those “-maes -mpclmul” 
flags? I don’t think so. I’ve experimented on other (not CryptoPP) files, and 
haven’t found a way to have those flags on unless explicitly set.

Am I missing anything here?

Oh, and with the above (and below :) changes it still works fine on Mac OS X 
10.9.5 (Xcode 6.1).

> -Os is usually more useful than -O2 or -O3 because it keeps the code tighter 
> and caches hotter.

Changed in my makefile, hope Jean-Pierre will do the same. Haven’t noticed size 
changes, haven’t run the benchmarks (yet).

> libcryptopp.so target is missing both CXXFLAGS and LDFLAGS.

It does not need CXXFLAGS (I think) because it’s linking only. Thanks for 
catching missing LDFLAGS! I’ve added them.


> By the way, here's a diff of the Makefile I use (it has a few more 
> changes):http://pastebin.com/xCYekFQ0

Thanks, but no thanks. :-)

I abhor “-arch x86_64 -arch i386”

Here’s the updated makefile:

#!/usr/bin/env make

SO = so
LIBLDFLAGS =
LDLIBS = 
CXX ?= g++
#CXX ?=clang++

# These are Mouse-specific
#CXX=g++-mp-4.8
#CXX=clang++-mp-3.4


# -O3 fails to link on Cygwin GCC version 4.5.3
CXXFLAGS  = -DNDEBUG -Os -Ofast -Wno-unused-value

# These are required on newer Mac OS X, as somehow they aren't set
# up automatically even when the native CPU supports them.
CXXFLAGS += -maes -mpclmul -mavx2


# -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
# The following seems to break link on Mac OS X
# LDFLAGS += -Wl,--gc-sections
ARFLAGS = -cr   # ar needs the dash on OpenBSD
RANLIB ?= ranlib
CP = cp -f
MKDIR = mkdir -p
EGREP = egrep
UNAME = $(shell uname)
ISX86 = $(shell uname -m | $(EGREP) -c "i.86|x86|i86|amd64")
IS_SUN_CC = $(shell $(CXX) -V 2>&1 | $(EGREP) -c "CC: Sun")
IS_LINUX = $(shell $(CXX) -dumpmachine 2>&1 | $(EGREP) -c "linux")
IS_MINGW = $(shell $(CXX) -dumpmachine 2>&1 | $(EGREP) -c "mingw")
CLANG_COMPILER = $(shell $(CXX) --version 2>&1 | $(EGREP) -i -c "clang")

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

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


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])")
GAS210_OR_LATER = $(shell $(CXX) -xc -c /dev/null -Wa,-v -o/dev/null 2>&1 | 
$(EGREP) -c "GNU assembler version (2\.[1-9][0-9]|[3-9])")
GAS217_OR_LATER = $(shell $(CXX) -xc -c /dev/null -Wa,-v -o/dev/null 2>&1 | 
$(EGREP) -c "GNU assembler version (2\.1[7-9]|2\.[2-9]|[3-9])")
GAS219_OR_LATER = $(shell $(CXX) -xc -c /dev/null -Wa,-v -o/dev/null 2>&1 | 
$(EGREP) -c "GNU assembler version (2\.19|2\.[2-9]|[3-9])")


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

endif   # ISX86

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

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

ifeq ($(IS_LINUX),1)
LDFLAGS += -pthread
ifneq ($(shell uname -i | $(EGREP) -c "(_64|d64)"),0)
M32OR64 = -m64
endif
endif

ifeq ($(UNAME),Darwin)
AR = libtool
ARFLAGS     = -static -o
CXXFLAGS   += -m64 -arch x86_64 # -arch i386
LIBLDFLAGS += -dynamiclib
SO = dylib
ifeq ($(CXX),g++)
  # On Mac OS X this employs native assembler that knows AES-NI
  CXXFLAGS += -Wa,-q
else
  # These are for Xcode clang++ for compatibility with gcc stuff
  CXXFLAGS   += -stdlib=libstdc++
  LDLIBS     += -lstdc++
  LIBLDFLAGS += -stdlib=libstdc++
endif
else
SO = so
endif

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

ifneq ($(CLANG_COMPILER),0)
CXXFLAGS += -Wno-tautological-compare
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

all: cryptest.exe
static: libcryptopp.a
dynamic: libcryptopp.$(SO)
shared: dynamic

test: cryptest.exe
        ./cryptest.exe v

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

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

remove:
        -$(RM) -rf $(PREFIX)/include/cryptopp
        -$(RM) $(PREFIX)/lib/libcryptopp.a
        -$(RM) $(PREFIX)/lib/libcryptopp.$(SO)
        -$(RM) $(PREFIX)/bin/cryptest.exe

libcryptopp.a: $(LIBOBJS)
        $(AR) $(ARFLAGS) $@ $(LIBOBJS)
        $(RANLIB) $@

libcryptopp.$(SO): $(LIBOBJS)
        $(CXX) $(LIBLDFLAGS) -o $@ $(LIBOBJS) $(LDFLAGS) $(LDLIBS)

cryptest.exe: libcryptopp.a $(TESTOBJS)
        $(CXX) -o $@ $(CXXFLAGS) $(TESTOBJS) ./libcryptopp.a $(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 $<

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