linking GNU fortran with OpenMP

[Bosse7]

Hi

I use MigGW in Windows and want to test using OpenMP parallel processing in my Fortran program
and compile the code with -fopenmp but the linker returns with error

C./mingw/bin/.../lib/gcc/mingw32/4.8.1/../../../ ... cannot find -lpthread

Which MinGW package is missing?

There is no problem compiling, linking and executing if I omitt the -fopenmp

Bosse

 

[xwb]

Check if libpthread.a is in mingw/lib

 

[Bosse7]

There is no such library. When I look at the mingw installation tool it lists a number of POSIX threading libraries that all are marked as installed except the mingw32-libquserex.dll This is marked as experimental and useless for 64 bit

I have a 64 bit installation.

 

[mikrom]

There must be something wrong with your MinGW installation. I used OpenMP in some older threads e.g.:

http://www.tek-tips.com/viewthread.cfm?qid=1736891

and it worked fine for me.

I have the library mentioned by xwb in my installation of MinGW in 2 directories:
C:\MinGW\lib\libpthread.a
C:\MinGW\mingw32\lib\libpthread.a

 

[Bosse7]

OK, I removed and installed again the POSIX packages and now it works. Thanks