vc examples build error on mac os x (Matthias Kretz)
Tijskens Engelbert
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Sun Jan 19 08:44:30 CET 2014
Hi mattias,
i am not quite sure on the version
i downloaded the tar file from https://gitorious.org/vc/vc/source/ad142ee3b7e2526cb8880cc5d8e492adfdbdd6a8: no version numbers are mentioned there.
the documentation that i've build says Vc 0.99.71-dev as specified in include/vc/version.h
is that ok?
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Today's Topics:
1. build error on mac osx (Tijskens Engelbert)
2. vc examples build error on mac os x (Tijskens Engelbert)
3. Re: build error on mac osx (Matthias Kretz)
4. Re: vc examples build error on mac os x (Matthias Kretz)
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Message: 1
Date: Fri, 17 Jan 2014 12:42:45 +0000
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Subject: build error on mac osx
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Hi all,
I wanted to evaluate the Vc library. Got some build errors in
In file included from /Users/etijskens/Downloads/vc-vc/build/trigonometric_AVX+XOP+FMA4.cpp:20:
In file included from /Users/etijskens/Downloads/vc-vc/include/Vc/Vc:22:
In file included from /Users/etijskens/Downloads/vc-vc/include/Vc/vector.h:32:
In file included from /Users/etijskens/Downloads/vc-vc/avx/vector.h:23:
/Users/etijskens/Downloads/vc-vc/avx/intrinsics.h:582:5: error: use of undeclared identifier '_mm_comlt_epu32'
AVX_TO_SSE_2(comlt_epu32)
^
(Similar errors from the three succeeding lines as well)
I checked the CMake files for any variables that could solve the problem. As suggested in the documentation (portability issues/compiler flags) I added
CMAKE_CXX_FLAGS -march=corei7-avx -mavx
The errors go away when i #undef VC_IMPL_XOP just before /Users/etijskens/Downloads/vc-vc/avx/intrinsics.h:581
As far as i know XOP is for AMD cpus and should not be activated in my build. CMake detects
TARGET_ARCHITECTURE=ivy-bridge
i am compiling on a machine with Intel? Core? i7-3615QM Processor and Mac OS X (maverick) using the clang 5.0 compiler.
I am not sure that
a) the problem is correctly solved by undefining VC_IMPL_XOP
b) there is not a more elegant solution
Any help is very much appreciated.
bert
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Message: 2
Date: Fri, 17 Jan 2014 13:15:21 +0000
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Subject: vc examples build error on mac os x
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dear all
When building the examples the following error comes up
[ 65%] Building CXX object examples/polarcoord/CMakeFiles/example_polarcoord_scalar.dir/main.cpp.o
In file included from /Users/etijskens/Downloads/vc-vc/examples/polarcoord/main.cpp:26:
In file included from /Users/etijskens/Downloads/vc-vc/include/Vc/Vc:22:
In file included from /Users/etijskens/Downloads/vc-vc/include/Vc/vector.h:26:
In file included from /Users/etijskens/Downloads/vc-vc/scalar/vector.h:495:
/Users/etijskens/Downloads/vc-vc/scalar/math.h:77:7: error: no member named 'sincos' in the global namespace; did you mean '__sincos'?
::sincos(x.data(), &sin->data(), &cos->data());
~~^~~~~~
__sincos
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/usr/include/math.h:647:29: note: '__sincos' declared here
__header_always_inline void __sincos(double __x, double *__sinp, double *__cosp) {
After replacing sincos with __sincos as suggested, everything builds fine, but maybe this breaks the code on other systems
i am compiling on a machine with Intel? Core? i7-3615QM Processor and Mac OS X (maverick) using the clang 5.0 compiler.
kindest regards,
bert
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Message: 3
Date: Fri, 17 Jan 2014 14:59:13 +0100
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Subject: Re: build error on mac osx
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Hi Tijskens,
welcome to the list! :)
On Friday 17 January 2014 12:42:45 Tijskens Engelbert wrote:
/Users/etijskens/Downloads/vc-vc/avx/intrinsics.h:582:5: error: use of
undeclared identifier '_mm_comlt_epu32' AVX_TO_SSE_2(comlt_epu32)
^
(Similar errors from the three succeeding lines as well)
I checked the CMake files for any variables that could solve the problem.
As suggested in the documentation (portability issues/compiler flags) I
added CMAKE_CXX_FLAGS -march=corei7-avx -mavx
The errors go away when i #undef VC_IMPL_XOP just before
/Users/etijskens/Downloads/vc-vc/avx/intrinsics.h:581
As far as i know XOP is for AMD cpus and should not be activated in my
build. CMake detects TARGET_ARCHITECTURE=ivy-bridge
i am compiling on a machine with Intel? Core? i7-3615QM Processor and Mac OS
X (maverick) using the clang 5.0 compiler. I am not sure that
a) the problem is correctly solved by undefining VC_IMPL_XOP
b) there is not a more elegant solution
I never can remember the mapping of Apples clang version to the actual clang
version. The latest released version of clang is 3.4
(http://llvm.org/releases/download.html). I think clang --version should print
the actual version somewhere.
In any case, you are right that your system doesn't need the XOP stuff. The
XOP code is compiled because the libVc library is supposed to work for any
target system. Thus you can build build applications for different hosts on
your machine without having to recompile libVc. But if your compiler doesn't
do XOP anyway then this feature is moot. So disabling XOP support is the right
way to go.
We have two options to fix this:
a) quick: call set(Vc_XOP_INTRINSICS_BROKEN true) in cmake/VcMacros.cmake for
depending on the clang version on Apple systems
b) more generic: make the -mxop compiler flag check more thorough. Right now
it only tests whether the compiler barfs with the flag. But it doesn't check
that with -mxop it also supports the XOP intrinsics. There's a similar check
in cmake/AddCompilerFlag.cmake for -mfma already. Should be easy to copy and
adjust.
Cheers,
Matthias
--
?????????????????????????????????????????????????????????????
Dipl.-Phys. Matthias Kretz
Web: http://compeng.uni-frankfurt.de/?mkretz
SIMD easy and portable: http://compeng.uni-frankfurt.de/?vc
?????????????????????????????????????????????????????????????
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Message: 4
Date: Fri, 17 Jan 2014 15:01:31 +0100
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Subject: Re: vc examples build error on mac os x
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I have a feeling Khouri and I fixed this before. What Vc branch did you check
out? Could you try 0.8 please? 0.8 is mostly 0.7 but with a bit more freedom
for MacOS and Windows fixes.
Cheers,
Matthias
On Friday 17 January 2014 13:15:21 Tijskens Engelbert wrote:
dear all
When building the examples the following error comes up
[ 65%] Building CXX object
examples/polarcoord/CMakeFiles/example_polarcoord_scalar.dir/main.cpp.o In
file included from
/Users/etijskens/Downloads/vc-vc/examples/polarcoord/main.cpp:26: In file
included from /Users/etijskens/Downloads/vc-vc/include/Vc/Vc:22: In file
included from /Users/etijskens/Downloads/vc-vc/include/Vc/vector.h:26: In
file included from /Users/etijskens/Downloads/vc-vc/scalar/vector.h:495:
/Users/etijskens/Downloads/vc-vc/scalar/math.h:77:7: error: no member named
'sincos' in the global namespace; did you mean '__sincos'?
::sincos(x.data(), &sin->data(), &cos->data());
~~^~~~~~
__sincos
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Develop
er/SDKs/MacOSX10.9.sdk/usr/include/math.h:647:29: note: '__sincos' declared
here __header_always_inline void __sincos(double __x, double *__sinp,
double *__cosp) {
After replacing sincos with __sincos as suggested, everything builds fine,
but maybe this breaks the code on other systems
i am compiling on a machine with Intel? Core? i7-3615QM Processor and Mac OS
X (maverick) using the clang 5.0 compiler.
kindest regards,
bert
--
?????????????????????????????????????????????????????????????
Dipl.-Phys. Matthias Kretz
Web: http://compeng.uni-frankfurt.de/?mkretz
SIMD easy and portable: http://compeng.uni-frankfurt.de/?vc
?????????????????????????????????????????????????????????????
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