Linking to static libraries, e.g. gsl and hdf5

Thu Oct 17 21:02:00 GMT 2013

Hi,
it seems that linking to some static libraries has broken down since 
the last time I tried to recompile my project (in April). Now the 
linking commands fail, e.g.
/usr/bin/g++.exe -Wall -O2 -funroll-loops -mtune=generic -msse2 
-static -fopenmp program.cpp -lgsl -lgslcblas -llapack -lblas -lgfortran
results in
/usr/lib/gcc/i686-pc-cygwin/4.7.3/../../../../i686-pc-cygwin/bin/ld: 
cannot find -lgsl
/usr/lib/gcc/i686-pc-cygwin/4.7.3/../../../../i686-pc-cygwin/bin/ld: 
cannot find -lgslcblas
I also get the same error when linking to -lhdf5.
Having had a look at /usr/lib, I noticed that a lot of the libraries 
follow the *nix convention
of the static libraries being named libfoo.a, while others have names 
of the type libfoo.dll.a.
Indeed, the latter was true for the GSL and the HDF5 libraries, and symlinking
/usr/lib/libgsl.a -> /usr/lib/libgsl.dll.a
/usr/lib/libgslcblas.a -> /usr/lib/libgslcblas.dll.a
/usr/lib/libhdf5.a -> /usr/lib/libhdf5.dll.a
solved the problem.
Why is this not done in the gsl and hdf5 packages? Other packages 
might also be affected.
-- 
Susi Lehtola
susi.lehtola@iki.fi
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