我想安装PostgreSQL我正在开发的节点项目OSX Yosemite.我使用MacPorts,所以尝试了这里描述的方法:https://github.com/codeforamerica/ohana-api/wiki/Installing-PostgreSQL-with-MacPorts-on-OS-X
...但我在第2步中遇到错误:
$ sudo gem install pg -- --with-pg-config=/opt/local/lib/postgresql93/bin/pg_config > ruby_error
ERROR: Error installing pg:
ERROR: Failed to build gem native extension.
/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/bin/ruby extconf.rb --with-pg-config=/opt/local/lib/postgresql93/bin/pg_config
Using config values from /opt/local/lib/postgresql93/bin/pg_config
checking for libpq-fe.h... yes
checking for libpq/libpq-fs.h... yes
checking for pg_config_manual.h... yes
checking for PQconnectdb() in -lpq... no
checking for PQconnectdb() in -llibpq... no
checking for PQconnectdb() in -lms/libpq... no
Can't find the PostgreSQL client library (libpq)
*** extconf.rb failed ***
Could …