在Windows上为ruby 2.0.0安装mysql2 gem时出错

Question

我正在尝试为Ruby 2.0.0安装mysql2 gem。

我尝试按照http://rorguide.blogspot.hk/2011/03/installing-mysql2-gem-on-ruby-192-and.html上的说明进行操作，但未成功。 鉴于以下错误消息，有人可以帮助我解决此错误吗？

Temporarily enhancing PATH to include DevKit...
Building native extensions.  This could take a while...
ERROR:  Error installing mysql2:
        ERROR: Failed to build gem native extension.

        C:/xampp/Ruby200-x64ruby.exe extconf.rb
checking for rb_thread_blocking_region()... yes
checking for main() in -llibmysql... 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=C:/xampp/Ruby200-x64ruby
        --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-libmysqllib
        --without-libmysqllib


Gem files will remain installed in C:/Ruby192/lib/ruby/gems/1.9.1/gems/mysql2-0.
3.6 for inspection.
Results logged to C:/Ruby192/lib/ruby/gems/1.9.1/gems/mysql2-0.3.6/ext/mysql2/ge
m_make.out

我的红宝石是从这里下载的：

http://rubyinstaller.org/

编辑

C:\xampp\Ruby200-x64\lib\ruby\gems\2.0.0>gem install mysql2 -- '--with-mysql-lib
="c:\xampp\mysql\lib" --with-mysql-include="c:\xampp\mysql\include" --with-mysql
-config="c:/xampp/mysql/bin/mysql_config.exe"'
Temporarily enhancing PATH to include DevKit...
Building native extensions with: '--with-mysql-lib="c:\xampp\mysql\lib" --with-m
ysql-include="c:\xampp\mysql\include" --with-mysql-config="c:/xampp/mysql/bin/my
sql_config.exe"'
This could take a while...
ERROR:  Error installing mysql2:
        ERROR: Failed to build gem native extension.

    C:/xampp/Ruby200-x64/bin/ruby.exe extconf.rb --with-mysql-lib="c:\xampp\mysq
l\lib" --with-mysql-include="c:\xampp\mysql\include" --with-mysql-config="c:/xam
pp/mysql/bin/mysql_config.exe"
checking for rb_thread_blocking_region()... *** 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=C:/xampp/Ruby200-x64/bin/ruby
C:/xampp/Ruby200-x64/lib/ruby/2.0.0/mkmf.rb:431:in `try_do': The compiler failed
 to generate an executable file. (RuntimeError)
You have to install development tools first.
        from C:/xampp/Ruby200-x64/lib/ruby/2.0.0/mkmf.rb:516:in `try_link0'
        from C:/xampp/Ruby200-x64/lib/ruby/2.0.0/mkmf.rb:531:in `try_link'
        from C:/xampp/Ruby200-x64/lib/ruby/2.0.0/mkmf.rb:717:in `try_func'
        from C:/xampp/Ruby200-x64/lib/ruby/2.0.0/mkmf.rb:1001:in `block in have_
func'
        from C:/xampp/Ruby200-x64/lib/ruby/2.0.0/mkmf.rb:892:in `block in checki
ng_for'
        from C:/xampp/Ruby200-x64/lib/ruby/2.0.0/mkmf.rb:337:in `block (2 levels
) in postpone'
        from C:/xampp/Ruby200-x64/lib/ruby/2.0.0/mkmf.rb:307:in `open'
        from C:/xampp/Ruby200-x64/lib/ruby/2.0.0/mkmf.rb:337:in `block in postpo
ne'
        from C:/xampp/Ruby200-x64/lib/ruby/2.0.0/mkmf.rb:307:in `open'
        from C:/xampp/Ruby200-x64/lib/ruby/2.0.0/mkmf.rb:333:in `postpone'
        from C:/xampp/Ruby200-x64/lib/ruby/2.0.0/mkmf.rb:891:in `checking_for'
        from C:/xampp/Ruby200-x64/lib/ruby/2.0.0/mkmf.rb:1000:in `have_func'
        from extconf.rb:9:in `<main>'


Gem files will remain installed in C:/xampp/Ruby200-x64/lib/ruby/gems/2.0.0/gems
/mysql2-0.3.11 for inspection.
Results logged to C:/xampp/Ruby200-x64/lib/ruby/gems/2.0.0/gems/mysql2-0.3.11/ex
t/mysql2/gem_make.out

C:\xampp\Ruby200-x64\lib\ruby\gems\2.0.0>gem install mysql2 -- '--with-mysql-lib
="c:/xampp/mysql/lib" --with-mysql-include="c:/xampp/mysql/include" --with-mysql
-config="c:/xampp/mysql/bin/mysql_config.exe"'
Temporarily enhancing PATH to include DevKit...
Building native extensions with: '--with-mysql-lib="c:/xampp/mysql/lib" --with-m
ysql-include="c:/xampp/mysql/include" --with-mysql-config="c:/xampp/mysql/bin/my
sql_config.exe"'
This could take a while...
ERROR:  Error installing mysql2:
        ERROR: Failed to build gem native extension.

    C:/xampp/Ruby200-x64/bin/ruby.exe extconf.rb --with-mysql-lib="c:/xampp/mysq
l/lib" --with-mysql-include="c:/xampp/mysql/include" --with-mysql-config="c:/xam
pp/mysql/bin/mysql_config.exe"
checking for rb_thread_blocking_region()... *** 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=C:/xampp/Ruby200-x64/bin/ruby
C:/xampp/Ruby200-x64/lib/ruby/2.0.0/mkmf.rb:431:in `try_do': The compiler failed
 to generate an executable file. (RuntimeError)
You have to install development tools first.
        from C:/xampp/Ruby200-x64/lib/ruby/2.0.0/mkmf.rb:516:in `try_link0'
        from C:/xampp/Ruby200-x64/lib/ruby/2.0.0/mkmf.rb:531:in `try_link'
        from C:/xampp/Ruby200-x64/lib/ruby/2.0.0/mkmf.rb:717:in `try_func'
        from C:/xampp/Ruby200-x64/lib/ruby/2.0.0/mkmf.rb:1001:in `block in have_
func'
        from C:/xampp/Ruby200-x64/lib/ruby/2.0.0/mkmf.rb:892:in `block in checki
ng_for'
        from C:/xampp/Ruby200-x64/lib/ruby/2.0.0/mkmf.rb:337:in `block (2 levels
) in postpone'
        from C:/xampp/Ruby200-x64/lib/ruby/2.0.0/mkmf.rb:307:in `open'
        from C:/xampp/Ruby200-x64/lib/ruby/2.0.0/mkmf.rb:337:in `block in postpo
ne'
        from C:/xampp/Ruby200-x64/lib/ruby/2.0.0/mkmf.rb:307:in `open'
        from C:/xampp/Ruby200-x64/lib/ruby/2.0.0/mkmf.rb:333:in `postpone'
        from C:/xampp/Ruby200-x64/lib/ruby/2.0.0/mkmf.rb:891:in `checking_for'
        from C:/xampp/Ruby200-x64/lib/ruby/2.0.0/mkmf.rb:1000:in `have_func'
        from extconf.rb:9:in `<main>'


Gem files will remain installed in C:/xampp/Ruby200-x64/lib/ruby/gems/2.0.0/gems
/mysql2-0.3.11 for inspection.
Results logged to C:/xampp/Ruby200-x64/lib/ruby/gems/2.0.0/gems/mysql2-0.3.11/ex
t/mysql2/gem_make.out

C:\xampp\Ruby200-x64\lib\ruby\gems\2.0.0>gem install mysql -- '--with-mysql-lib=
"c:/xampp/mysql/lib" --with-mysql-include="c:/xampp/mysql/include" --with-mysql-
config="c:/xampp/mysql/bin/mysql_config.exe"'
Fetching: mysql-2.9.1.gem (100%)
Temporarily enhancing PATH to include DevKit...
Building native extensions with: '--with-mysql-lib="c:/xampp/mysql/lib" --with-m
ysql-include="c:/xampp/mysql/include" --with-mysql-config="c:/xampp/mysql/bin/my
sql_config.exe"'
This could take a while...
ERROR:  Error installing mysql:
        ERROR: Failed to build gem native extension.

    C:/xampp/Ruby200-x64/bin/ruby.exe extconf.rb --with-mysql-lib="c:/xampp/mysq
l/lib" --with-mysql-include="c:/xampp/mysql/include" --with-mysql-config="c:/xam
pp/mysql/bin/mysql_config.exe"
checking for main() in -llibmysql... *** 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=C:/xampp/Ruby200-x64/bin/ruby
        --with-mysql-dir
        --without-mysql-dir
        --with-mysql-include=${mysql-dir}/include
        --with-mysql-lib=${mysql-dir}/
        --with-libmysqllib
        --without-libmysqllib
C:/xampp/Ruby200-x64/lib/ruby/2.0.0/mkmf.rb:431:in `try_do': The compiler failed
 to generate an executable file. (RuntimeError)
You have to install development tools first.
        from C:/xampp/Ruby200-x64/lib/ruby/2.0.0/mkmf.rb:516:in `try_link0'
        from C:/xampp/Ruby200-x64/lib/ruby/2.0.0/mkmf.rb:531:in `try_link'
        from C:/xampp/Ruby200-x64/lib/ruby/2.0.0/mkmf.rb:717:in `try_func'
        from C:/xampp/Ruby200-x64/lib/ruby/2.0.0/mkmf.rb:947:in `block in have_l
ibrary'
        from C:/xampp/Ruby200-x64/lib/ruby/2.0.0/mkmf.rb:892:in `block in checki
ng_for'
        from C:/xampp/Ruby200-x64/lib/ruby/2.0.0/mkmf.rb:337:in `block (2 levels
) in postpone'
        from C:/xampp/Ruby200-x64/lib/ruby/2.0.0/mkmf.rb:307:in `open'
        from C:/xampp/Ruby200-x64/lib/ruby/2.0.0/mkmf.rb:337:in `block in postpo
ne'
        from C:/xampp/Ruby200-x64/lib/ruby/2.0.0/mkmf.rb:307:in `open'
        from C:/xampp/Ruby200-x64/lib/ruby/2.0.0/mkmf.rb:333:in `postpone'
        from C:/xampp/Ruby200-x64/lib/ruby/2.0.0/mkmf.rb:891:in `checking_for'
        from C:/xampp/Ruby200-x64/lib/ruby/2.0.0/mkmf.rb:942:in `have_library'
        from extconf.rb:27:in `<main>'


Gem files will remain installed in C:/xampp/Ruby200-x64/lib/ruby/gems/2.0.0/gems
/mysql-2.9.1 for inspection.
Results logged to C:/xampp/Ruby200-x64/lib/ruby/gems/2.0.0/gems/mysql-2.9.1/ext/
mysql_api/gem_make.out

C:\xampp\Ruby200-x64\lib\ruby\gems\2.0.0>gem install mysql -- '--with-mysql-lib=
"c:/xampp/mysql/lib" --with-mysql-include="c:/xampp/mysql/include" --with-mysql-
config="c:/xampp/mysql/bin/mysql_config"'
Temporarily enhancing PATH to include DevKit...
Building native extensions with: '--with-mysql-lib="c:/xampp/mysql/lib" --with-m
ysql-include="c:/xampp/mysql/include" --with-mysql-config="c:/xampp/mysql/bin/my
sql_config"'
This could take a while...
ERROR:  Error installing mysql:
        ERROR: Failed to build gem native extension.

    C:/xampp/Ruby200-x64/bin/ruby.exe extconf.rb --with-mysql-lib="c:/xampp/mysq
l/lib" --with-mysql-include="c:/xampp/mysql/include" --with-mysql-config="c:/xam
pp/mysql/bin/mysql_config"
checking for main() in -llibmysql... *** 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=C:/xampp/Ruby200-x64/bin/ruby
        --with-mysql-dir
        --without-mysql-dir
        --with-mysql-include=${mysql-dir}/include
        --with-mysql-lib=${mysql-dir}/
        --with-libmysqllib
        --without-libmysqllib
C:/xampp/Ruby200-x64/lib/ruby/2.0.0/mkmf.rb:431:in `try_do': The compiler failed
 to generate an executable file. (RuntimeError)
You have to install development tools first.
        from C:/xampp/Ruby200-x64/lib/ruby/2.0.0/mkmf.rb:516:in `try_link0'
        from C:/xampp/Ruby200-x64/lib/ruby/2.0.0/mkmf.rb:531:in `try_link'
        from C:/xampp/Ruby200-x64/lib/ruby/2.0.0/mkmf.rb:717:in `try_func'
        from C:/xampp/Ruby200-x64/lib/ruby/2.0.0/mkmf.rb:947:in `block in have_l
ibrary'
        from C:/xampp/Ruby200-x64/lib/ruby/2.0.0/mkmf.rb:892:in `block in checki
ng_for'
        from C:/xampp/Ruby200-x64/lib/ruby/2.0.0/mkmf.rb:337:in `block (2 levels
) in postpone'
        from C:/xampp/Ruby200-x64/lib/ruby/2.0.0/mkmf.rb:307:in `open'
        from C:/xampp/Ruby200-x64/lib/ruby/2.0.0/mkmf.rb:337:in `block in postpo
ne'
        from C:/xampp/Ruby200-x64/lib/ruby/2.0.0/mkmf.rb:307:in `open'
        from C:/xampp/Ruby200-x64/lib/ruby/2.0.0/mkmf.rb:333:in `postpone'
        from C:/xampp/Ruby200-x64/lib/ruby/2.0.0/mkmf.rb:891:in `checking_for'
        from C:/xampp/Ruby200-x64/lib/ruby/2.0.0/mkmf.rb:942:in `have_library'
        from extconf.rb:27:in `<main>'


Gem files will remain installed in C:/xampp/Ruby200-x64/lib/ruby/gems/2.0.0/gems
/mysql-2.9.1 for inspection.
Results logged to C:/xampp/Ruby200-x64/lib/ruby/gems/2.0.0/gems/mysql-2.9.1/ext/
mysql_api/gem_make.out

C:\xampp\Ruby200-x64\lib\ruby\gems\2.0.0>

Answer 1

checking for main() in -llibmysql... no

您缺少libmysql-headers。

编辑：是重复的： 由于缺少libmysql，在Windows上安装mysql-2.9.0 gem失败

Answer 2

您的错误明确表明与您的Devkit有关，因此您可以从以下位置下载Devkit

http://rubyinstaller.org/downloads

并遵循以下步骤

https://github.com/oneclick/rubyinstaller/wiki/Development-Kit

这将解决您的问题

Answer 3

llibmysql错误意味着ruby无法看到libmysql.dll。 我刚刚收到错误，所以我已经将libmySQL.dll复制到$ mysqldir / lib并出现了另一个错误

checking for main() in -llibmysql... yes
checking for mysql.h... no
checking for mysql/mysql.h... no
-----
mysql.h is missing.  please check your installation of mysql and try again.

因此，现在ruby可以看到libmysql.dll，但是现在它需要mysql文件。 我再次启动mysql安装程序，然后选择需要包含文件的位置。 2分钟-我得到包含目录。 再次启动gem install mysql2.... ，并1 gem installed了1 gem installed 。

Answer 4

如果像我一样，您有一些同事使用Windows（在我的情况下为Windows 7）从事Rails项目。 为了安装gem“ mysql2”，您需要在命令行中指定使用库的路径。

先决条件：已安装MYSQL。

要运行的命令行（通过安装路径替换路径）

 gem install mysql2 — ‘–with-mysql-lib=”c:\Program Files\MySQL\MySQL Server 5.6\lib” –with-mysql-include=”c:\Program Files\MySQL\MySQL Server 5.6\include”‘