speex/meson_options.txt

option('fft', type: 'combo', choices: ['auto', 'kiss', 'smallft', 'gpl-fftw3', 'proprietary-intel-mkl'], value: 'auto',
       description: 'Use an alternate FFT implementation (auto = kiss for fixed point and smallft for floating point')

option('test-binaries', type: 'feature', value: 'auto',
       description: 'Build speex test binaries')

option('fixed-point', type: 'feature', value: 'disabled',
       description: 'Use fixed-point arithmetic instead of floating-point')

option('fixed-point-debug', type: 'feature', value: 'disabled',
       description: 'Debug fixed-point arithmetic implementation])')

option('float-api', type: 'feature', value: 'enabled',
       description: 'Disable all parts of the API that are using floats')

option('tools', type: 'feature', value: 'auto',
       description: 'Build speex command line tools')

option('valgrind', type: 'feature', value: 'disabled',
       description: 'Enable valgrind extra checks')

option('vbr', type: 'feature', value: 'enabled',
       description: 'Disable support for VBR and VAD from the codec')

option('vorbis-psy', type: 'feature', value: 'disabled',
       description: 'Enable support for the Vorbis psy model')

# Assembly + DSP options
option('arm4-asm', type: 'feature', value: 'disabled',
       description: 'Make use of ARM4 assembly optimizations')

option('arm5e-asm', type: 'feature', value: 'disabled',
       description: 'Make use of ARM5E assembly optimizations')

option('blackfin-asm', type: 'feature', value: 'disabled',
       description: 'Make use of Blackfin assembly optimizations')

option('sse', type: 'feature', value: 'auto',
       description: 'Enable or disable SSE support')

#option('ti-c55x', type: 'feature', value: 'disabled',
#       description: 'Enable support for TI C55X DSP')