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Diffstat (limited to 'libraries/lapack-atlas/README.SLACKWARE')
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diff --git a/libraries/lapack-atlas/README.SLACKWARE b/libraries/lapack-atlas/README.SLACKWARE new file mode 100644 index 0000000000..fccc6b12b6 --- /dev/null +++ b/libraries/lapack-atlas/README.SLACKWARE @@ -0,0 +1,49 @@ +The following notes apply just for LAPACK built against ATLAS. + +IMPORTANT NOTES: + + +1) If you update ATLAS, you MUST also rebuild and reinstall LAPACK, even if + there is no update available for LAPACK! Otherwise you end up with a + broken/incomplete LAPACK library! + +2) This SlackBuild conflicts with the lapack.SlackBuild which is meant mainly + for compilation against the reference BLAS. You may install LAPACK by + this SlackBuild in parallel with the LAPACK built against the reference BLAS + if you use the SYS_DESTDIR and DEFAULT_DOCS variables (see below), but then + you are on your own, especially when compiling other software against LAPACK + and BLAS/ATLAS. + +3) There are a few extra variables which you may want or need to give + appropriate values when calling the lapack-atlas.SlackBuild: SYS_DESTDIR, + DEFAULT_DOCS, USE_ATLAS_PT_LIBS and TEST_LAPACK. + + SYS_DESTDIR is set by default to "/usr" and is the system destination + directory. When installing the package produced by this SlackBuild, + LAPACK's files will be written to $SYS_DESTDIR/lib (or lib64). + Documentation files are written to /usr/doc/lapack-atlas-$VERSION if not + otherwise stated (see below). + You may want to change the value of SYS_DESTDIR to avoid conflicts (see + the notes above). IMPORTANT: SYS_DESTDIR has to have an absolute + path as value. + + DEFAULT_DOCS has the default value "yes", which means that docs go + to /usr/doc/lapack-atlas-$VERSION, but you may want to let the docs to + go to $SYS_DESTDIR/doc/lapack-atlas-$VERSION. For this, just set this + variable to something like "no". + + USE_ATLAS_PT_LIBS is set by default to "yes" which means that this script + will try to build LAPACK against the threaded ATLAS libs. On a single + processor machine these are missing and you will get a WARNING which you + can ignore, since ATLAS will not create these libraries on such a machine. + On a multi processor machine the WARNING should not be there and you need to + set this variable to "no" if you want to force LAPACK to build against the + single threaded ATLAS libraries. At this point in time this is discouraged + and you are on your own if you do it, especially when compiling other + software which depends on LAPACK and ATLAS. + + TEST_LAPACK is set by default to "no" which means that this script will not + try to run the LAPACK test suite. Set it to "yes" if you want the opposite. + + All these settings may be done the usual way on the command line when + calling this SlackBuild, you do not have to edit the script. |