fftw2 hasn't been updated since 1999! I think it is safe to use fftw3 now...
On Sun, Jan 18, 2015 at 2:24 PM, Miller Puckette <[email protected]> wrote: > Hi Chuck - > > It looks like this would then no longer work with fftw2 - is this a > problem, or is fftw3 widely enough distributed now that nobody will > need fftw2 comatibility? > > thanks > Miller > > On Sun, Jan 18, 2015 at 12:59:14PM -0600, Charles Z Henry wrote: > > pd-0.45.4 has the right code for FFTW3 but has the wrong configure.ac > > code to test for it. > > > > fftw_one is a function in FFTW2, which plans a 1D FFT. The comparable > > function in FFTW3 is fftw_plan_dft_1d > > > > To get this to configure properly, you only need to change the name of > > the library and the function it looks for. For the single precision > > fftw3 library ( libfftw3f.so ) the function is named > > sfftw_plan_dft_1d_ or sfftw_plan_dft_1d__ > > > > Before filing a bug, I wanted to get another set of eyes on it. Does > > that function name look suspicious to anyone else? I've confirmed the > > symbol is the same in the system installed 3.3.3 version of the > > library in ubuntu 14.04 and the custom compiled 3.3.4 version that I'm > > using. > > > > To fix: > > > > This section of code in configure.ac: > > dnl fftw v2 > > AC_ARG_ENABLE([fftw], > > [AS_HELP_STRING([--enable-fftw], > > [use FFTW package])], > > [fftw=$enableval]) > > if test x$fftw = xyes; then > > AC_CHECK_LIB(fftw, fftw_one, [LIBS="$LIBS -lfftw"], > > [AC_MSG_NOTICE([fftw package not found - using built-in FFT]); > fftw=no]) > > fi > > AM_CONDITIONAL(FFTW, test x$fftw = xyes) > > > > becomes > > > > dnl fftw v3 > > AC_ARG_ENABLE([fftw], > > [AS_HELP_STRING([--enable-fftw], > > [use FFTW package])], > > [fftw=$enableval]) > > if test x$fftw = xyes; then > > AC_CHECK_LIB(fftw3f, sfftw_plan_dft_1d_, [LIBS="$LIBS -lfftw3f"], > > [AC_MSG_NOTICE([fftw package not found - using built-in FFT]); > fftw=no]) > > fi > > AM_CONDITIONAL(FFTW, test x$fftw = xyes) > > > > Then, I run: > > ./autogen.sh > > > > and > > > > ./configure --enable-jack --prefix=/home/chenry/pd-0.45.4 > > --enable-fftw CFLAGS=-I/home/chenry/linalg/include > > LDFLAGS=-L/home/chenry/linalg/lib > > > > Chuck > > > > _______________________________________________ > > Pd-dev mailing list > > [email protected] > > http://lists.puredata.info/listinfo/pd-dev > > _______________________________________________ > Pd-dev mailing list > [email protected] > http://lists.puredata.info/listinfo/pd-dev >
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