Problem: Package fftw3f was not found in the pkg-config

GNU Radio
1

Hello!

I´m new to GNU Radio. I´m working on a project now and trying to get it
to compile. I´m using cygwin and followed the "Installing GNU Radio with
Cygwin " instruction step-by-step. The only problem i hade on the way
was with wxPython because i tried the 2.8.6.0 and the instructions are
for version 2.8.0.1 and i am missing the config.patch file in the
2.8.6.0 version.

Anyhow…i tried it despide my failure with wxPython because the
instruction sais it is not necessary. Everything else was fine and
worked. Now i tried to configure gnuradio 3.0.4 and i get the following
message:

"
…
checking for fftw >= 3.0… Package fftw3f was not found in the
pkg-config search path. Perhaps you should add the directory containing
‘fftw3f.pc’ to the PKG_CONFIG_PATH enviroment variable No package
‘fftw3f’ found
configure: error: Libary requirements (fftw3f >= 3.0) not met; consider
adjusting the PKG_CONFIG_PATH enviroment variable if you libaries are in
a nonstander prefix so pkg-config can find tham.
"

soooo…what do i have to do? edit the PKR_CONFIG_PATH? I googled and
found out it FC5 could be the answer but FC5 installatin isw not
explained in the cygwin instruction
(http://gnuradio.org/trac/wiki/FC5Install) so anybody can give me a
hint?

thx!

Tomek

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2

On 10/4/07, Tomek [email protected] wrote:

configure: error: Libary requirements (fftw3f >= 3.0) not met; consider adjusting the PKG_CONFIG_PATH enviroment variable if you libaries are in a nonstander prefix so pkg-config can find tham.
"

soooo…what do i have to do? edit the PKR_CONFIG_PATH? I googled and found out it FC5 could be the answer but FC5 installatin isw not explained in the cygwin instruction (http://gnuradio.org/trac/wiki/FC5Install) so anybody can give me a hint?

I think when you do the install, it installed to
/usr/local/lib/pkgconfig. This is noted on the FFTW installation page
here:

http://gnuradio.org/trac/wiki/FFTWInstall

On my Cygwin installation, I have:

$ echo $PKG_CONFIG_PATH
/usr/lib/pkgconfig:/usr/local/lib/pkgconfig

Which allows me to run:

$ pkg-config --list-all | grep fft
fftw3                 FFTW - fast Fourier transform library
fftw3f                FFTW - fast Fourier transform library

thx!

Tomek

Brian

3

----- Original Message -----
From: “Tomek” [email protected]
To: [email protected]
Sent: Thursday, October 04, 2007 11:59 AM
Subject: [Discuss-gnuradio] Problem: Package fftw3f was not found in
thepkg-config

adjusting the PKG_CONFIG_PATH enviroment variable if you libaries are in a
nonstander prefix so pkg-config can find tham.
"

ls /usr/local/lib/pkgconfig

should list fftw3f.pc among the known packages.

PKG_CONFIG_PATH=/usr/local/lib/pkgconfig pkg-config --list-all

should also list fftw3f.pc among the known packages.

echo $PKG_CONFIG_PATH

should show that PKG_CONFIG_PATH is not defined. If it is defined as
anything other than /usr/local/lib/pkgconfig you have a problem; try
resetting it with

PKG_CONFIG_PATH=

– Don W.