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Re: fft support on octave

From: niraj pandey
Subject: Re: fft support on octave
Date: Mon, 23 Dec 2019 11:26:11 +0530

Now during make (on octave code) I am getting the following error.

preserving existing HG-ID file
Makefile:30458: *** multiple target patterns.  Stop.


On Thu, Dec 19, 2019 at 8:20 AM Mike Miller <address@hidden> wrote:
On Tue, Dec 17, 2019 at 17:40:50 +0530, niraj pandey wrote:
> This give me the following error.
> ./configure --prefix=/home/niraj/fftw --enable-shared --enable-float
> --enable-long-double --enable-sse
> checking for a BSD-compatible install... /usr/bin/install -c
> checking whether build environment is sane... yes
> checking for a thread-safe mkdir -p... /usr/bin/mkdir -p
> checking for gawk... gawk
> checking whether make sets $(MAKE)... yes
> checking whether make supports nested variables... yes
> checking whether to enable maintainer-specific portions of Makefiles... no
> checking build system type... x86_64-pc-linux-gnu
> checking host system type... x86_64-pc-linux-gnu
> configure: error: --enable-single/--enable-long-double conflict
> After that I tried with the following option and build fftw.
>   /configure --prefix=/home/niraj/fftw --enable-shared
> --enable-long-double

You have to build and install FFTW twice with separate sets of configure
options for single and double precision floating point. For example,

    ./configure --prefix=/home/user/fftw --enable-shared
    make all
    make install
    make distclean
    ./configure --prefix=/home/user/fftw --enable-shared --enable-single
    make all
    make install

Both builds can be safely installed in the same --prefix option.


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