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Hi! I am trying to compile a program called Grass5 on my RedHat 7.1 box (Intel) This program uses the fftw library and uses a file called fftw.h I have installed the Powertools FFTW packages and I discovered that there is no fftw.h file in it. I went to the www.fftw.org webserver and I downloaded and rebuilt the RedHat package provided there. This package contains the fftw.h file Curious, I compared the fftw.org and the redhat packages to discover that in the redhat packages fftw has been renamed dfftw (headers and libraries) and rfftw had been renamed drfftw (headers and libraries). Now my questions: Why is it so? Wouldn't it be possible to create links from dfftw to fftw and from drfftw to rfftw? Thanks in advance for any answer Daniel Tourde
Since Powertools was discontinued and this is not bad enough to warrant an errata release, there is nothing I can do about it, unfortunately (so the official fix is the removal of the package from current products). To your question: Red Hat did not rename fftw to dfftw. If fftw is built both in single-precision and double-precision mode, the fftw build process automatically names the binaries sfftw (s.p.) and dfftw (d.p.). The fftw.org RPM probably supports only one of them.