FFTW finally working under Qt code

FFTW was not working the way I wanted actually and yesterday I became crazy about it, giving me a not so good day...

Today I am quite sure that the problem is solved.

I found some hints on the net that helped me...

http://www.fftw.org/faq/section3.html#linkfails

"Question 3.13. My program does not link (on Unix).

The libraries must be listed in the correct order (-lfftw3 -lm for FFTW 3.x) and after your program sources/objects. (The general rule is that if A uses B, then A must be listed before B in the link command.)."

http://www.qtcentre.org/forum/archive/index.php/t-337.html

I tried a simple example of FFTW and it worked out perfectly not giving any error either warning.

Since I am working on Qt projects, it was not so easy as writing gcc -lfftw3 -lm helloworld.c,

so I had to add a line in the .pri file.

Here the new line in bold:

LIBS += -L$${QWT_ROOT}/lib -l$${QWTLIB} \

/usr/local/lib/libfftw3.a

Thanks to the ones who helped me to realise about this (basic) problem.

More inspired than yesterday Fer