npm 在 FreeBSD 10.1 上安装 canvas

npm install canvas on FreeBSD 10.1

谁能告诉我这是怎么回事? cairo-1.12.18_1,2 已安装。我试过 export PKG_CONFIG_PATH=/usr/local/libdata/pkgconfig 没用:

# uname -a
FreeBSD test 10.1-RELEASE FreeBSD 10.1-RELEASE #0 r274401: Tue Nov 11 21:02:49 UTC 2014
# npm install canvas
/
> canvas@1.1.6 install /usr/home/www/myapp/node_modules/canvas
> node-gyp rebuild

./util/has_cairo_freetype.sh: line 4: pkg-config: command not found
gyp: Call to './util/has_cairo_freetype.sh' 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/lib/node_modules/npm/node_modules/node-gyp/lib/configure.js:343:16)
gyp ERR! stack     at ChildProcess.emit (events.js:98:17)
gyp ERR! stack     at Process.ChildProcess._handle.onexit (child_process.js:820:12)
gyp ERR! System FreeBSD 10.1-RELEASE
gyp ERR! command "node" "/usr/local/lib/node_modules/npm/node_modules/node-gyp/bin/node-gyp.js" "rebuild"
gyp ERR! cwd /usr/home/www/myapp/node_modules/canvas
gyp ERR! node -v v0.10.35
gyp ERR! node-gyp -v v1.0.2
gyp ERR! not ok
npm ERR! FreeBSD 10.1-RELEASE
npm ERR! argv "node" "/usr/local/bin/npm" "install" "canvas"
npm ERR! node v0.10.35
npm ERR! npm  v2.1.18
npm ERR! code ELIFECYCLE

npm ERR! canvas@1.1.6 install: `node-gyp rebuild`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the canvas@1.1.6 install script 'node-gyp rebuild'.
npm ERR! This is most likely a problem with the canvas package,
npm ERR! not with npm itself.
npm ERR! Tell the author that this fails on your system:
npm ERR!     node-gyp rebuild
npm ERR! You can get their info via:
npm ERR!     npm owner ls canvas
npm ERR! There is likely additional logging output above.

npm ERR! Please include the following file with any support request:
npm ERR!     /usr/home/www/myapp/npm-debug.log

安装 pkgconf 包。 (将我的评论移到答案中,以便您可以将其标记为正确,以造福于未来的观众。)