我通过在 OS X 10.8.5 上安装了 Homebrew 版本的 Postgres
brew install postgresql
然后cp /usr/local/Cellar/postgresql/9.2.3/homebrew.mxcl.postgresql.plist ~/Library/LaunchAgents/为它添加了一个午餐启动器。
然后我将（setup.cfg）指向它并输入python setup.py build
，但随后出现此错误：
ld: warning: ignoring file
/usr/local/Cellar/postgresql/9.2.3/lib/libpq.dylib, file was built for
unsupported file format ( 0xcf 0xfa 0xed 0xfe 0x 7 0x 0 0x 0 0x 1 0x 3
0x 0 0x 0 0x 0 0x 6 0x 0 0x 0 0x 0 ) which is not the architecture
being linked (i386):
/usr/local/Cellar/postgresql/9.2.3/lib/libpq.dylib
因此，通过 brew 构建 libpq 似乎有些奇怪（从psycopg2的角度来看）