我正在使用基于 ubuntu 的回溯操作系统。我已经安装了 mysql，我可以停止、启动、连接到 mysql。
mysql -u root -p
工作正常，能够创建数据库，并且能够看到 /var/lib/mysql 中的数据
root@bt:/usr/share/mysql# gem install mysql2
Fetching: mysql2-0.3.11.gem (100%)
Building native extensions. This could take a while...
ERROR: Error installing mysql2:
ERROR: Failed to build gem native extension.
/usr/local/rvm/rubies/ruby-2.0.0-p0/bin/ruby extconf.rb
checking for rb_thread_blocking_region()... yes
checking for rb_wait_for_single_fd()... yes
checking for mysql_query()... -lmysqlclient
checking for main() in -lm... yes
checking for mysql_query()... -lmysqlclient
checking for main() in -lz... yes
checking for mysql_query()... -lmysqlclient
checking for main() in -lsocket... no
checking for mysql_query()... -lmysqlclient
checking for main() in -lnsl... yes
checking for mysql_query()... -lmysqlclient
checking for main() in -lmygcc... no
checking for mysql_query()... -lmysqlclient
*** 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=/usr/local/rvm/rubies/ruby-2.0.0-p0/bin/ruby
--with-mysql-config
--without-mysql-config
--with-mysql-dir
--without-mysql-dir
--with-mysql-include
--without-mysql-include=${mysql-dir}/include
--with-mysql-lib
--without-mysql-lib=${mysql-dir}/
--with-mysqlclientlib
--without-mysqlclientlib
--with-mlib
--without-mlib
--with-mysqlclientlib
--without-mysqlclientlib
--with-zlib
--without-zlib
--with-mysqlclientlib
--without-mysqlclientlib
--with-socketlib
--without-socketlib
--with-mysqlclientlib
--without-mysqlclientlib
--with-nsllib
--without-nsllib
--with-mysqlclientlib
--without-mysqlclientlib
--with-mygcclib
--without-mygcclib
--with-mysqlclientlib
--without-mysqlclientlib
Gem files will remain installed in /usr/local/rvm/gems/ruby-2.0.0-p0/gems/mysql2-0.3.11 for inspection.
Results logged to /usr/local/rvm/gems/ruby-2.0.0-p0/gems/mysql2-0.3.11/ext/mysql2/gem_make.out
同样的情况gem install mysql
root@bt:/var/lib/gems/1.9.2/gems/mysql-2.8.1# sudo gem install mysql -- --with-mysql-config=/usr/bin/mysql
Building native extensions. This could take a while...
ERROR: Error installing mysql:
ERROR: Failed to build gem native extension.
/usr/bin/ruby1.9.2 extconf.rb --with-mysql-config=/usr/bin/mysql
/usr/bin/mysql: unknown option '--cflags'
*** 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=/usr/bin/ruby1.9.2
--with-mysql-config
Gem files will remain installed in /var/lib/gems/1.9.2/gems/mysql-2.9.1 for inspection.
Results logged to /var/lib/gems/1.9.2/gems/mysql-2.9.1/ext/mysql_api/gem_make.out
问题是指定如下命令，我无法找到mysql_config文件。
gem install mysql -- --with-mysql-config=<PATH>我找不到。
请帮我解决这个问题。谢谢