44 lines
1.7 KiB
Markdown
44 lines
1.7 KiB
Markdown
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# Libsharp
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*IMPORTANT NOTE*: It appears that the default branch upon cloning from
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github.com/dagss/libsharp was an outdated 'dagss' branch instead of
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the 'master' branch. To get the latest copy,
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please do `git checkout master; git pull`. New clones are no longer affected.
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## Paper
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https://arxiv.org/abs/1303.4945
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## Compilation
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GNU make is required for compilation.
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Libsharp compilation has been successfully tested with GNU and Intel compilers.
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When using gcc, version 4.x is required [1].
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Since libsharp was written in standard C99, other compilers should work fine,
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but SSE2/AVX support will most likely be deactivated.
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If you obtained libsharp directly from the git repository, you will also
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need a copy of the GNU autotools. In this case, run "autoconf" in libsharp's
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main directory before any other steps.
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For libsharp releases distributed as a .tar.gz file, this step is not necessary.
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Afterwards, simply run "./configure"; if this fails, please refer to the output
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of "./configure --help" for additional hints and, if necessary, provide
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additional flags to the configure script.
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Once the script finishes successfully, run "make"
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(or "gmake"). This should install the compilation products in the
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subdirectory "auto/".
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Documentation can be created by the command "(g)make doc".
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However this requires the doxygen application to be installed
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on your system.
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The documentation will be created in the subdirectory doc/.
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[1] Some versions of the gcc 4.4.x release series contain a bug which causes
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the compiler to crash during libsharp compilation. This appears to be fixed
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in the gcc 4.4.7 release. It is possible to work around this problem by adding
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the compiler flag "-fno-tree-fre" after the other optimization flags - the
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configure script should do this automatically.
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