[Rd] Missing libpthread in RTools
It appears that Mingw gcc included in RTools is missing a dependent library. If I compile a program with '-lgomp' switch (for OpenMP support), I get a errors about undefined references to functions like '_imp__pthread_mutex_destroy'. Adding the '-static' switch, I get the following error: c:/rtools/mingw/bin/../lib/gcc/mingw32/4.5.0/../../../../mingw32/bin/ld.exe: cannot find -lpthread Sure enough, there is neither libpthread.a nor libpthread.dll under RTools' installation directory. I think these library are standard in Cygwin. Is there any chance to include them in RTools, too? Davor __ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
Re: [Rd] Missing libpthread in RTools
On 15/10/2010 4:53 PM, Davor Cubranic wrote: It appears that Mingw gcc included in RTools is missing a dependent library. If I compile a program with '-lgomp' switch (for OpenMP support), I get a errors about undefined references to functions like '_imp__pthread_mutex_destroy'. Adding the '-static' switch, I get the following error: c:/rtools/mingw/bin/../lib/gcc/mingw32/4.5.0/../../../../mingw32/bin/ld.exe: cannot find -lpthread Sure enough, there is neither libpthread.a nor libpthread.dll under RTools' installation directory. I think these library are standard in Cygwin. Is there any chance to include them in RTools, too? Rtools is for building R, and that library isn't needed in R. If you want it for some particular purpose, can't you just install a copy on your machine? Duncan Murdoch Davor __ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel __ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
Re: [Rd] Missing libpthread in RTools
On 2010-10-15, at 4:39 PM, Duncan Murdoch wrote: > On 15/10/2010 4:53 PM, Davor Cubranic wrote: >> It appears that Mingw gcc included in RTools is missing a dependent >> library. If I compile a program with '-lgomp' switch (for OpenMP >> support), I get a errors about undefined references to functions like >> '_imp__pthread_mutex_destroy'. Adding the '-static' switch, I get the >> following error: >> >> >> c:/rtools/mingw/bin/../lib/gcc/mingw32/4.5.0/../../../../mingw32/bin/ld.exe: >> cannot find -lpthread >> >> Sure enough, there is neither libpthread.a nor libpthread.dll under >> RTools' installation directory. I think these library are standard in >> Cygwin. Is there any chance to include them in RTools, too? > > Rtools is for building R, and that library isn't needed in R. If you want it > for some particular purpose, can't you just install a copy on your machine? Yes, I can. But does it make sense for the compiler to have support for OpenMP (i.e., allow -fopenmp), but not include its library dependency so that it fails in the linking phase? Davor __ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
Re: [Rd] Missing libpthread in RTools
On Tue, 19 Oct 2010, Davor Cubranic wrote: On 2010-10-15, at 4:39 PM, Duncan Murdoch wrote: On 15/10/2010 4:53 PM, Davor Cubranic wrote: It appears that Mingw gcc included in RTools is missing a dependent library. If I compile a program with '-lgomp' switch (for OpenMP support), I get a errors about undefined references to functions like '_imp__pthread_mutex_destroy'. Adding the '-static' switch, I get the following error: c:/rtools/mingw/bin/../lib/gcc/mingw32/4.5.0/../../../../mingw32/bin/ld.exe: cannot find -lpthread Sure enough, there is neither libpthread.a nor libpthread.dll under RTools' installation directory. I think these library are standard in Cygwin. Is there any chance to include them in RTools, too? Rtools is for building R, and that library isn't needed in R. If you want it for some particular purpose, can't you just install a copy on your machine? Yes, I can. But does it make sense for the compiler to have support for OpenMP (i.e., allow -fopenmp), but not include its library dependency so that it fails in the linking phase? For the MinGW project, yes. The 'Min' stands for 'minimal'. Note that there are a lot of issues with gcc using pthreads for OMP on Windows, and the gcc developers are working on a different solution. Davor __ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel -- Brian D. Ripley, rip...@stats.ox.ac.uk Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ University of Oxford, Tel: +44 1865 272861 (self) 1 South Parks Road, +44 1865 272866 (PA) Oxford OX1 3TG, UKFax: +44 1865 272595 __ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
