---
name: "libggigcp"
section: "7"
platform: "linux"
package: "libggigcp1-dev"
version: "1.0.2+dfsg1-2"
release: "Debian 6.0 (Squeeze)"
platforms: ["linux"]
url: "https://new.carta.tech/libggigcp"
---

# libggigcp(7)

GGI extension for color and palette

## NAME

**libggigcp** - GGI extension for color and palette

## 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

`libggi(7)`