depends MOTIF && optional_depends "tiff" \ "" \ "" \ "for tiff support" && optional_depends "libpng" \ "--enable-pngdrv" \ "" \ "for PNG support" && optional_depends "JPEG" \ "--enable-jpegdrv" \ "" \ "for JPEG support" && optional_depends "t1lib" \ "--without-bundled-t1lib" \ "--with-bundled-t1lib" \ "for system t1lib support" && optional_depends "fftw" \ "--with-fftw" \ "--without-fftw" \ "for optimized Fast Fourier Transform Code"