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- Get the source from /nfs/farm/g/glast/u05/extlib/cfitsio/cfitsio-v3.060A-src.tar.gz
- Unzip in temporary directory
- cd into that directory
- Run the following (for a shared library, instead of running "make," run, "make shared")
Code Block ./configure --prefix=<installation directory> make make installinstal
Mac
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O
*Note: Make sure you do the build from bldmac01 or bldmac02 (Intel processors). 
After you unzip the file, if the OS is Mac-9 or earlier, refer to the file README.MacOs (located in the directory with unpacked contents of cfitsio, "cfitsio-v3.060A").
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