编译器错误，而安装rubygem'mysql2'在Ruby 1.9.2在CentOS 64位 [英] compiler error while installing rubygem 'mysql2' in Ruby 1.9.2 over CentOS 64-bit

问题描述

CentOS 64位服务器， Ruby 1.8.7& 1.9.2

{{没有RVM，无需RVM ...
目前所有Ruby1.9.2二进制文件都是ruby19和类似地访问，
，所以没有映射宝石路径或任何类别是}}

gem'mysql2' ...

is giving error while installing gem 'mysql2' ...

我已安装所有依赖项，并且都是 64位版本 ...

I have all dependencies installed and all are 64-bit versions ...

所有错误都是{./client.h:13：
错误：redefinition of typedef
'rb_unblock_function_t'}

All error are of kind {./client.h:13: error: redefinition of typedef ‘rb_unblock_function_t’}

可能{#warning ruby​​sig.h已过时}
是原因吗？

Could {#warning rubysig.h is obsolete} be a reason for this?

控制台捕获

#gem19 install mysql2 -v 0.2.7 -- --with-mysql-dir=/usr/bin --with-mysql-config=/usr/bin/mysql_config --with-mysql-include=/usr/include/mysql

Building native extensions.  This could take a while...
ERROR:  Error installing mysql2:
        ERROR: Failed to build gem native extension.

/usr/bin/ruby19 extconf.rb --with-mysql-dir=/usr/bin --with-mysql-config=/usr/bin/mysql_config --with-mysql-include=/usr/include/mysql
checking for rb_thread_blocking_region()... no
checking for mysql.h... yes
checking for errmsg.h... yes
checking for mysqld_error.h... yes
creating Makefile

make
gcc -I. -I/usr/include/ruby-1.9.1/x86_64-linux -I/usr/include/ruby-1.9.1/ruby/backward -I/usr/include/ruby-1.9.1 -I. -DHAVE_MYSQL_H -DHAVE_ERRMSG_H -DHAVE_MYSQLD_ERROR_H    -I/usr/include/mysql  -g -pipe -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4 -m64 -D_GNU_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -fno-strict-aliasing -fwrapv -fPIC -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4 -mtune=generic -Wall -fno-strict-aliasing -fPIC -Wall -funroll-loops  -o result.o -c result.c
In file included from ./client.h:11,
                 from ./mysql2_ext.h:39,
                 from result.c:1:
/usr/include/ruby-1.9.1/ruby/backward/rubysig.h:14:2: warning: #warning rubysig.h is obsolete
In file included from ./mysql2_ext.h:39,
                 from result.c:1:
./client.h:13: error: redefinition of typedef ‘rb_unblock_function_t’
/usr/include/ruby-1.9.1/ruby/intern.h:754: error: previous declaration of ‘rb_unblock_function_t’ was here
./client.h:14: error: redefinition of typedef ‘rb_blocking_function_t’
/usr/include/ruby-1.9.1/ruby/intern.h:755: error: previous declaration of ‘rb_blocking_function_t’ was here
./client.h:20: error: static declaration of ‘rb_thread_blocking_region’ follows non-static declaration
/usr/include/ruby-1.9.1/ruby/intern.h:759: error: previous declaration of ‘rb_thread_blocking_region’ was here
./client.h: In function ‘rb_thread_blocking_region’:
./client.h:23: warning: ‘rb_thread_blocking_region_begin’ is deprecated (declared at /usr/include/ruby-1.9.1/ruby/backward/rubysig.h:31)
./client.h:25: warning: ‘rb_thread_blocking_region_end’ is deprecated (declared at /usr/include/ruby-1.9.1/ruby/backward/rubysig.h:32)
In file included from ./mysql2_ext.h:39,
                 from result.c:1:
./client.h:41:7: warning: no newline at end of file
make: *** [result.o] Error 1

推荐答案

通过他们在gem上引入的补丁，以便它在Ruby 1.8中运行，但是在Ruby 1.9上不需要。

This is caused by a patch they introduced on the gem in order for it to run in Ruby 1.8 but it is not needed on Ruby 1.9.

要停用这个修复安装gem可以为编译器定义一个标志：

To deactivated this "fix" and be able to install the gem you can define a flag for the compiler:

gem install mysql2 -- --with-cflags=\"-DHAVE_RB_THREAD_BLOCKING_REGION\"

这篇关于编译器错误，而安装rubygem'mysql2'在Ruby 1.9.2在CentOS 64位的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！