Canvas module compilation osx error

I'm trying to install captcha npm module, which exploits the canvas module.

Unfortunately I have problem to install that module on OSX. I'm getting the following error:

> [email protected] install ....../node_modules/canvas
> node-gyp rebuild

not found: ldconfig
gyp: Call to './util/has_lib.sh jpeg' returned exit status 0. while trying to load binding.gyp
gyp ERR! configure error 
gyp ERR! stack Error: `gyp` failed with exit code: 1
gyp ERR! stack     at ChildProcess.onCpExit (/usr/local/Cellar/node/0.10.21/lib/node_modules/npm/node_modules/node-gyp/lib/configure.js:424:16)
gyp ERR! stack     at ChildProcess.EventEmitter.emit (events.js:98:17)
gyp ERR! stack     at Process.ChildProcess._handle.onexit (child_process.js:789:12)
gyp ERR! System Darwin 13.0.0
gyp ERR! command "node" "/usr/local/Cellar/node/0.10.21/lib/node_modules/npm/node_modules/node-gyp/bin/node-gyp.js" "rebuild"
gyp ERR! cwd ...../node_modules/canvas
gyp ERR! node -v v0.10.21
gyp ERR! node-gyp -v v0.10.10
gyp ERR! not ok 
npm ERR! weird error 1

Any idea? Apparently there is ldconfig missing. But no idea how to install it.

I'm using homebrew, and I have the lastest XCode, and command line tools installed.

This is my workaround:

First we need to install cairo:

brew install cairo jpeg

It takes sometime. However now it's time to update PKG_CONFIG_PATH, pointing at the cairo libraries.

export PKG_CONFIG_PATH=/usr/local/lib/pkgconfig:/usr/X11/lib/pkgconfig

To compile canvas we need to have node-gyp installed.

npm install node-gyp -g

If the installation still is not working because of missing jpeg lib, you need to run:

npm install canvas

in directory of the project where it's needed and then to stop installation just before the error reporting. Then you need change directory and recompile manually the C++ binding

cd node_modules/canvas/
node-gyp rebuild

after that you should have working canvas module.