On Mar 24, 2007, at 19:19, Takeshi Enomoto wrote:
What is the difference between fftw-3 and fftw-3-single?
I am not the original author. Fink has only one package for fftw3.
I will try to merge the two. We could name the merge package fftw3 and deprecate fftw-3 and fftw-3-single while keep them for a while.
The difference between fftw and fftw-single may be revealing: $ diff -u math/{fftw,fftw-single}/Portfile --- math/fftw/Portfile 2006-11-04 03:41:31.000000000 -0600 +++ math/fftw-single/Portfile 2007-03-02 18:12:40.000000000 -0600 @@ -1,12 +1,12 @@ -# $Id: Portfile 20399 2006-11-03 02:12:19Z jberry@macports.org $ +# $Id: Portfile 22478 2007-03-02 05:16:40Z pipping@macports.org $ -PortSystem 1.0 -name fftw +PortSystem 1.0 +name fftw-single version 2.1.5 -revision 2 +revision 1 categories math devel maintainers nomaintainer@macports.org -description Fast C routines to compute the Discrete Fourier Transform +description Single precision version of fftw long_description \ FFTW is a C subroutine library for computing the Discrete Fourier \ Transform (DFT) in one or more dimensions, of both real and complex \ @@ -20,14 +20,21 @@ platforms darwin +distname fftw-${version} homepage http://www.fftw.org/ master_sites ${homepage} \ ftp://ftp.fftw.org/pub/fftw/ \ ftp://ftp.kusastro.kyoto-u.ac.jp/pub/src/GNU/fftw/ checksums md5 8d16a84f3ca02a785ef9eb36249ba433 -configure.args --enable-type-prefix --enable-threads \ - --disable-fortran --infodir=${prefix}/share/info + +depends_run port:fftw + +configure.args --enable-type-prefix \ + --enable-threads \ + --enable-float \ + --disable-fortran \ + --infodir=${prefix}/share/info variant fortran { depends_lib-append port:gcc34 @@ -38,3 +45,9 @@ } } +# Documentation conflicts with the double precision version, +# so delete it. The documentation is installed by the dependency +# port:fftw, above. + +post-destroot { file delete -force ${destroot}${prefix}/share } + It seems that the difference is that the -single version uses -- enable-float. Perhaps when using --enable-float, fftw installs itself under a different name? And the comment before the post-destroot phase explains why things are being deleted -- because both versions install the same documentation, which would cause a conflict otherwise. Maybe that's why fftw-single depends on fftw -- so that fftw-single will still include the documentation. Apparently there must be some reason why one would want fftw and fftw- single to be able to be installed simultaneously. If you want to try to combine these into a single port, you may want to model your new port after the recently-updated zlib port, which does in fact configure, make and install itself twice as well, with different configure arguments: http://trac.macosforge.org/projects/macports/browser/trunk/dports/ archivers/zlib/Portfile Whatever you do should probably be the same for the fftw / fftw- single and fftw-3 / fftw-3-single ports.