Hello. I'm porting an application (DLib, https://reviews.freebsd.org/D12559) that uses BLAS and LAPACK, and I have some questions.
1. Is there any pure C implementation that does not require Fortran compiler? 2. My application looks for cblas_ddot function in BLAS library, but the default library (netlib) doesn't seem to have that. It has ddot, though, so I'm not sure if it is a wrong check on app's side, or netlib is indeed doesn't suit there. For now I've used openblas, but I'm also not sure if it is a right choice. 3. How to link properly to any of BLAS libraries? All BLAS implementations blaslapack.mk features require Fortran. This implies USE_GCC=yes, so these are compiled with GCC, not Clang. Now when I try to link Clang-compiled DLib to GCC-compiled openblas, I get undefined references: //usr/local/lib/gcc6/libgfortran.so.3: undefined reference to `__getf2@GCC_4.6.0' //usr/local/lib/gcc6/libgfortran.so.3: undefined reference to `__floatunditf@GCC_4.6.0' //usr/local/lib/gcc6/libgfortran.so.3: undefined reference to `__subtf3@GCC_4.6.0' //usr/local/lib/gcc6/libgfortran.so.3: undefined reference to `__multf3@GCC_4.6.0' //usr/local/lib/gcc6/libgfortran.so.3: undefined reference to `__unordtf2@GCC_4.6.0' //usr/local/lib/gcc6/libgfortran.so.3: undefined reference to `__lttf2@GCC_4.6.0' //usr/local/lib/gcc6/libgfortran.so.3: undefined reference to `__addtf3@GCC_4.6.0' //usr/local/lib/gcc6/libgfortran.so.3: undefined reference to `__gttf2@GCC_4.6.0' //usr/local/lib/gcc6/libgfortran.so.3: undefined reference to `__divtf3@GCC_4.6.0' //usr/local/lib/gcc6/libgfortran.so.3: undefined reference to `__letf2@GCC_4.6.0' //usr/local/lib/gcc6/libgfortran.so.3: undefined reference to `__netf2@GCC_4.6.0' //usr/local/lib/gcc6/libgfortran.so.3: undefined reference to `__floatditf@GCC_4.6.0' //usr/local/lib/gcc6/libgfortran.so.3: undefined reference to `__eqtf2@GCC_4.6.0' //usr/local/lib/gcc6/libgfortran.so.3: undefined reference to `__floatsitf@GCC_4.6.0' I've tracked these symbols to /usr/local/lib/gcc6/libgcc_s.so. But there is also /usr/lib/libgcc_s.so and it doesn't have such symbols. I suspect this is the source of the error, but I wasn't able to fix it. Passing -Wl,-rpath as advised by lang/gcc6 pkg-message doesn't help. The only workaround I came up with is USE_GCC=yes to compile DLib itself, but that's pretty unsatisfactory. Thanks in advance. _______________________________________________ [email protected] mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-ports To unsubscribe, send any mail to "[email protected]"
