PKG_CHECK_MODULES([epoxy], [epoxy])
PKG_CHECK_MODULES([FFTW3], [fftw3])
PKG_CHECK_MODULES([epoxy], [epoxy])
PKG_CHECK_MODULES([FFTW3], [fftw3])
# Needed for unit tests and the demo app.
with_demo_app=yes
PKG_CHECK_MODULES([SDL2], [sdl2])
# Needed for unit tests and the demo app.
with_demo_app=yes
PKG_CHECK_MODULES([SDL2], [sdl2])