LibGGIGCP libraries and utilities ================================= GGI extension for color and palette ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ .. manpage:: 7 libggigcp Description ----------- LibGGIGCP is a generic color and palette management extension. It supports conversion between different color spaces such as RGBA, YUV, HSV and CMYK. Environment Variables --------------------- `GCP_DEBUG` The debugging level for LibGGIGCP: 0 or unset debug output is off; debugging is off 255 all debug output is on You may also bitwise-or any of the following together: - 2 : debug core - 4 : debug mode setting - 8 : debug color handling - 16 : debug drawing - 32 : misc debugging output - 64 : debug dynamic library handling - 128 : debug event handling The debugging output can be quite verbose and in most cases you should redirect stderr so that it does not interfere with your program's output. `GCP_DEBUGSYNC` Turn on synchronous debugging output, flushing the output buffers before returning from `DPRINT` calls. `GGI_CONFDIR` Override compiled-in path to global config files (Win32 only, but not Cygwin). Note that the last environment variable really begin with `GGI`, and not `GCP`. See Also -------- :man:`libggi(7)`