[How to do instruction] 128x64 OLED with Song Status and Spectrum Display on Raspberry Pi

[TheOldPresbyope]

@Jempie

I'm puzzled. I can't tell what went wrong with your install but from the error message you posted 

Code:

checking for fftw_execute in -lfftw3... no
configure: error: fftw library is required!

it would seem that the fftw3-dev package did not get installed; I don't know why.

I just tried the same instructions on a new moOde player and succeeded without any errors. 

Here's the first part of the output I see for the first step

Code:

pi@moode:~ $ sudo apt install autoconf make libtool libfftw3-dev libmpdclient-dev libi2c-dev i2c-tools lm-sensors
Reading package lists... Done
Building dependency tree      
Reading state information... Done
autoconf is already the newest version (2.69-11).
i2c-tools is already the newest version (4.1-1).
i2c-tools set to manually installed.
libmpdclient-dev is already the newest version (2.16-1).
libtool is already the newest version (2.4.6-9).
make is already the newest version (4.2.1-1.2).
make set to manually installed.
The following additional packages will be installed:
 libfftw3-bin
Suggested packages:
 libfftw3-doc fancontrol
The following NEW packages will be installed:
 libfftw3-bin libfftw3-dev libi2c-dev lm-sensors
0 upgraded, 4 newly installed, 0 to remove and 67 not upgraded.
Need to get 1,220 kB of archives.
After this operation, 4,513 kB of additional disk space will be used.
Do you want to continue? [Y/n]

As you can see, the package libfftw3-dev was included along with libfftw3-bin.

This was confirmed in the configure step:

Code:

pi@moode:~/cava $ ./configure --disable-input-portaudio --disable-input-sndio --disable-output-ncurses --disable-input-pulse --program-prefix=mpd_oled_
...
checking for fftw_execute in -lfftw3... yes
...

The make step proceeded with many lines of output I won't repeat here.

Regards,
Kent