Missing libquadmath.so

[chenghlee]

readelf -d $CONDA_PREFIX/lib/libgfortran.so.4.0.0 (from the libgfortran-ng-7.2.0-h9f7466a_2 package) shows one of its needed shared libraries is libquadmath.so.0. However, none of the packages I can find in the "defaults" channel provides this dynamic library.

When building a simple "hello world" FORTRAN application, I get the following error:

$ $CONDA_PREFIX/bin/x86_64-conda_cos6-linux-gnu-gfortran hello-world.f90 -o hello-world
$CONDA_PREFIX/bin/../lib/gcc/x86_64-conda_cos6-linux-gnu/7.2.0/../../../../x86_64-conda_cos6-linux-gnu/bin/ld: cannot find -lquadmath

The contents of hello-world.f90:

program HelloWorld
print*,"Hello world"
end program

[nehaljwani]

@chenghlee Try installing the libgcc-ng conda package. You will find libquadmath.so there.

cc @mingwandroid

[msarahan]

If you're using conda-build, the dependencies should be getting added automatically for you with run_exports. If you're using the compilers on your own without conda-build, then you're on your own. We'd be interested in fixing things if you are using conda-build but not getting the appropriate deps.

[chenghlee]

Installing libgcc-ng does indeed fix this issue. However, the libgfortran-ng package should have a dependency on libgcc-ng to ensure libquadmath is always installed when using the libgfortran-ng conda package.

[msarahan]

fixed in #14

new compiler packages are coming soon