GNU make and GNU gcc (version 4.x) are required for compilation.

If you obtained libsharp directly from the git repository, you will also
need a copy of the GNU autotools. In this case, run "autoconf" in libsharp's
main directory before any other steps.
For libsharp releases distributed as a .tar.gz file, this step is not necessary.

Afterwards, simply run "./configure"; if this fails, please refer to the output
of "./configure --help" for additional hints and, if necessary, provide
additional flags to the configure script.
Once the script finishes successfully, run "make"
(or "gmake"). This should install the compilation products in the
subdirectory "auto/".

Documentation can be created by the command "(g)make doc".
However this requires the doxygen application to be installed
on your system.
The documentation will be created in the subdirectory doc/.