我已经为此奋斗了两天，是时候问StackOverflow了。
我准备了一个简单的Ruby应用程序（noob alert！），以这种语言开始。我使用过Sinatra和DataMapper。
使用MySql时一切都很顺利。我已经安装了dm-mysql-adapter，然后安装了rake migrate自动创建的表。
我试图通过postgres更改mysql（在Heroku上发布应用程序），现在是问题。
启动此命令：
sudo gem install dm-postgres-adapter
会给：
Building native extensions. This could take a while...
ERROR: Error installing dm-postgres-adapter:
ERROR: Failed to build gem native extension.
/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/bin/ruby extconf.rb
checking for main() in -lpq... yes
checking for libpq-fe.h... yes
checking for libpq/libpq-fs.h... yes
checking for postgres.h... yes
checking for mb/pg_wchar.h... no
*** extconf.rb failed ***
Could not create Makefile due to some reason, probably lack of necessary
libraries and/or headers. Check the mkmf.log file for more details. You may
need configuration options.
Provided configuration options:
--with-opt-dir
--without-opt-dir
--with-opt-include
--without-opt-include=${opt-dir}/include
--with-opt-lib
--without-opt-lib=${opt-dir}/lib
--with-make-prog
--without-make-prog
--srcdir=.
--curdir
--ruby=/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/bin/ruby
--with-pgsql-server-dir
--without-pgsql-server-dir
--with-pgsql-server-include
--without-pgsql-server-include=${pgsql-server-dir}/include
--with-pgsql-server-lib
--without-pgsql-server-lib=${pgsql-server-dir}/
--with-pgsql-client-dir
--without-pgsql-client-dir
--with-pgsql-client-include
--without-pgsql-client-include=${pgsql-client-dir}/include
--with-pgsql-client-lib
--without-pgsql-client-lib=${pgsql-client-dir}/
--with-pqlib
--without-pqlib
Could not find PostgreSQL build environment (libraries & headers): Makefile not created
我尝试卸载并重新安装Postgres（通过自制程序），并且还将一些参数传递给gem安装，例如：
sudo gem install dm-postgres-adapter -- --with-pgsql-server-dir=/usr/local/Cellar/postgresql/9.3.2/
sudo gem install dm-postgres-adapter -- --with-pgsql-server-dir=/usr/local/Cellar/postgresql/9.3.2/include/server/
sudo gem install dm-postgres-adapter -- --with-pgsql-server-include=/usr/local/Cellar/postgresql/9.3.2/include/
对此有何帮助？