[Openmp-dev] libomp.lib is not automatically added on Windows

[İsmail Dönmez via Openmp-dev]

That doesn't change the result on Windows.

On Tuesday, August 11, 2015, Bataev, Alexey via Openmp-dev <
openmp-dev at lists.llvm.org> wrote:

> Johnny,
> try to use -fopenmp=libomp. Currently -fopenmp does not turn on OpenMP
> support.
>
> Best regards,
> Alexey Bataev
> =============
> Software Engineer
> Intel Compiler Team
>
> 10.08.2015 18:51, Peyton, Jonathan L via Openmp-dev пишет:
>
>> Clang front end developers,
>>
>> We are having trouble getting the -fopenmp flag to work on Windows.  It
>> appears that the linking phase does not include libomp.lib?  Below is an
>> OpenMP hello world compilation output.
>>
>> -- Johnny
>>
>> -----Original Message-----
>> From: İsmail Dönmez [mailto:ismail at i10z.com]
>> Sent: Monday, August 10, 2015 10:04 AM
>> To: Peyton, Jonathan L
>> Subject: Re: [Openmp-dev] libomp.lib is not automatically added on Windows
>>
>> Hi,
>>
>> On Mon, Aug 10, 2015 at 6:02 PM, Peyton, Jonathan L <
>> jonathan.l.peyton at intel.com> wrote:
>>
>>> Can you include -v in the compile command and post the output?
>>>
>> Sure:
>>
>> C:\Users\ismail\Desktop>clang -O2 -fms-compatibility-version=19 -fopenmp
>> -v omp_hello.c clang version 3.8.0 (http://llvm.org/git/clang
>> 45770fa6e4eb618277ed85044d5a2d4c962c57cf) (http://llvm.org/git/llvm
>> 97bdbf60d9923a9e06effbb96801129070499fd5)
>> Target: x86_64-pc-windows-msvc
>> Thread model: posix
>> InstalledDir: C:\Program Files\LLVM\bin
>>   "C:\\Program Files\\LLVM\\bin\\clang.exe" -cc1 -triple
>> x86_64-pc-windows-msvc19.0.0 -emit-obj -disable-free -main-file-name
>> omp_hello.c -mrelocation-model pic -pic-level 2 -mthread-model posix
>> -fmath-errno -masm-verbose -mconstructor-aliases -munwind-tables
>> -target-cpu x86-64 -momit-leaf-frame-pointer -v -dwarf-column-info
>> -resource-dir "C:\\Program Files\\LLVM\\bin\\..\\lib\\clang\\3.8.0"
>> -internal-isystem "C:\\Program
>> Files\\LLVM\\bin\\..\\lib\\clang\\3.8.0\\include" -internal-isystem
>> "C:\\Program Files (x86)\\Microsoft Visual Studio 14.0\\VC\\INCLUDE"
>> -internal-isystem "C:\\Program Files (x86)\\Microsoft Visual Studio
>> 14.0\\VC\\ATLMFC\\INCLUDE" -internal-isystem "C:\\Program Files
>> (x86)\\Windows Kits\\10\\include\\10.0.10150.0\\ucrt"
>> -internal-isystem "C:\\Program Files (x86)\\Windows
>> Kits\\NETFXSDK\\4.6\\include\\um" -internal-isystem "C:\\Program Files
>> (x86)\\Windows Kits\\8.1\\include\\shared" -internal-isystem "C:\\Program
>> Files (x86)\\Windows Kits\\8.1\\include\\um"
>> -internal-isystem "C:\\Program Files (x86)\\Windows
>> Kits\\8.1\\include\\winrt" -O2 -fdebug-compilation-dir
>> "C:\\Users\\ismail\\Desktop" -ferror-limit 19 -fmessage-length 100 -fopenmp
>> -fnoopenmp-use-tls -mstackrealign -fms-extensions -fms-compatibility
>> -fms-compatibility-version=19 -fdelayed-template-parsing -fobjc-runtime=gcc
>> -fdiagnostics-show-option -fcolor-diagnostics -vectorize-loops
>> -vectorize-slp -o
>> "C:\\Users\\ismail\\AppData\\Local\\Temp\\omp_hello-45bdc2.o" -x c
>> omp_hello.c clang -cc1 version 3.8.0 based upon LLVM 3.8.0svn default
>> target x86_64-pc-windows-msvc #include "..." search starts here:
>> #include <...> search starts here:
>>   C:\Program Files\LLVM\bin\..\lib\clang\3.8.0\include
>>   C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\INCLUDE
>> C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\ATLMFC\INCLUDE
>> C:\Program Files (x86)\Windows Kits\10\include\10.0.10150.0\ucrt
>> C:\Program Files (x86)\Windows Kits\NETFXSDK\4.6\include\um  C:\Program
>> Files (x86)\Windows Kits\8.1\include\shared  C:\Program Files (x86)\Windows
>> Kits\8.1\include\um  C:\Program Files (x86)\Windows Kits\8.1\include\winrt
>> End of search list.
>>   "C:\\Program Files (x86)\\Microsoft Visual Studio
>> 14.0\\VC\\bin\\amd64\\link.exe" -out:a.exe -defaultlib:libcmt -nologo
>> "C:\\Users\\ismail\\AppData\\Local\\Temp\\omp_hello-45bdc2.o"
>> omp_hello-45bdc2.o : error LNK2019: unresolved external symbol
>> __kmpc_fork_call referenced in function main omp_hello-45bdc2.o : error
>> LNK2019: unresolved external symbol omp_get_thread_num referenced in
>> function .omp_outlined.
>> omp_hello-45bdc2.o : error LNK2019: unresolved external symbol
>> omp_get_num_threads referenced in function .omp_outlined.
>> omp_hello-45bdc2.o : error LNK2019: unresolved external symbol
>> __kmpc_cancel_barrier referenced in function .omp_outlined.
>> a.exe : fatal error LNK1120: 4 unresolved externals
>> clang.exe: error: linker command failed with exit code 1120 (use -v to
>> see invocation)
>>
>> C:\Users\ismail\Desktop>
>> _______________________________________________
>> Openmp-dev mailing list
>> Openmp-dev at lists.llvm.org
>> http://lists.llvm.org/cgi-bin/mailman/listinfo/openmp-dev
>>
>
> _______________________________________________
> Openmp-dev mailing list
> Openmp-dev at lists.llvm.org
> http://lists.llvm.org/cgi-bin/mailman/listinfo/openmp-dev
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.llvm.org/pipermail/openmp-dev/attachments/20150811/a935a6f0/attachment.html>