precompiled binaries for OS X aren't 64bit

[laserpilot]

Last pull request lets ofxFFT work properly with OF 0.9.0 but the precompiled libraries for OSX are dated and seem to only work if you build in 32bit - throws these errors on 64bit - might need to just make updates to those libraries and hope it doesn't break much? http://www.fftw.org

ld: warning: ignoring file ../../../addons/ofxFft/libs/fftw/lib/osx/fftw3f.a, file was built for archive which is not the architecture being linked (x86_64): ../../../addons/ofxFft/libs/fftw/lib/osx/fftw3f.a Undefined symbols for architecture x86_64: "_fftwf_destroy_plan", referenced from: ofxFftw::~ofxFftw() in ofxFftw.o "_fftwf_plan_r2r_1d", referenced from: ofxFftw::setup(int, fftWindowType) in ofxFftw.o "_fftwf_cleanup", referenced from: ofxFftw::~ofxFftw() in ofxFftw.o "_fftwf_malloc", referenced from: ofxFftw::setup(int, fftWindowType) in ofxFftw.o "_fftwf_free", referenced from: ofxFftw::~ofxFftw() in ofxFftw.o "_fftwf_execute", referenced from: ofxFftw::executeFft() in ofxFftw.o ofxFftw::executeIfft() in ofxFftw.o ld: symbol(s) not found for architecture x86_64

[realadissu]

I faced the same issue and found a solution. As mentioned by @laserpilot, just go to http://www.fftw.org. Download the latest files and compile them on your own. I used the following commands from the terminal.

sudo ./configure --disable-shared --enable-static --enable-float --enable-threads CC="gcc -arch x86_64" CXX="g++ -arch x86_64" CPP="gcc -E" CXXCPP="g++ -E"
sudo make install

This creates 4 libraries at /usr/local/lib and their .la part. I copied them all into the ofxFft/libs/fftw/lib folder, replacing the old ones. In addition, I also replaced the fftw3.h file in ofxFft/libs/fftw/lib with the one from /usr/local/include.

Once this is done, I executed the following command in the project root folder:
xattr -cr
and made a Clean in XCode.

Then the compiling worked.

Please note, if you compile the libraries on e.g. Mojave you might get a lot of compiler warnings that the libraries have been compiled for a newer version of macOS if your target version is lower. I assume that there is another command to force to compile for an older version of macOS but I did not yet dive into this.

Maybe the ofxFft can be updated to fix this issue.

[Daandelange]

(note that both commands above don't need sudo)
To target another osx SDK, I used this command : ./configure --disable-shared --enable-static --enable-float --enable-threads CFLAGS="-arch x86_64 -mmacosx-version-min=10.9"