安装ruby gem mysql 出现 checking for mysql_query() in -lmysqlclient... no-优快云博客

本文链接：https://blog.youkuaiyun.com/zhangfortune/article/details/84805218

本文记录了一次在Ruby环境中安装MySQL gem失败的问题排查过程。主要原因是缺少必要的库文件libmysqlclient-dev，通过安装该库成功解决了gem安装失败的问题。

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Building native extensions.  This could take a while...
ERROR:  Error installing mysql:
	ERROR: Failed to build gem native extension.

    current directory: /home/fz/.rvm/gems/ruby-2.3.0/gems/mysql-2.9.1/ext/mysql_api
/home/fz/.rvm/rubies/ruby-2.3.0/bin/ruby -r ./siteconf20160603-21721-69utdl.rb extconf.rb
checking for mysql_query() in -lmysqlclient... no
checking for main() in -lm... yes
checking for mysql_query() in -lmysqlclient... no
checking for main() in -lz... yes
checking for mysql_query() in -lmysqlclient... no
checking for main() in -lsocket... no
checking for mysql_query() in -lmysqlclient... no
checking for main() in -lnsl... yes
checking for mysql_query() in -lmysqlclient... no
checking for main() in -lmygcc... no
checking for mysql_query() in -lmysqlclient... 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=/home/fz/.rvm/rubies/ruby-2.3.0/bin/$(RUBY_BASE_NAME)
	--with-mysql-config
	--without-mysql-config
	--with-mysql-dir
	--without-mysql-dir
	--with-mysql-include
	--without-mysql-include=${mysql-dir}/include
	--with-mysql-lib
	--without-mysql-lib=${mysql-dir}/lib
	--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

To see why this extension failed to compile, please check the mkmf.log which can be found here:

  /home/fz/.rvm/gems/ruby-2.3.0/extensions/x86_64-linux/2.3.0/mysql-2.9.1/mkmf.log

extconf failed, exit code 1

Gem files will remain installed in /home/fz/.rvm/gems/ruby-2.3.0/gems/mysql-2.9.1 for inspection.
Results logged to /home/fz/.rvm/gems/ruby-2.3.0/extensions/x86_64-linux/2.3.0/mysql-2.9.1/gem_make.out

出现这个错误，是因为少安装了一个lib，执行