これが私のスタックです：
- RHEL 5.8 x86_64
- MySQL 5.5 x86_64
- ルビー 1.9.3p345
- レール 3.2.8
バンドラーを介して mysql2 0.3.11 gem をインストールしていますが、エラーが発生しました。この問題は、Ruby gem mysql2 install failingおよびmysql2 gem installation failsでよくあるエラーと同じではないようです。これらは、mysql 用に既にインストールしたパッケージです。
[user@local config]$ yum list installed | grep MySQL
Unable to read consumer identity
MySQL-client.x86_64 5.5.29-1.rhel5 installed
MySQL-devel.x86_64 5.5.29-1.rhel5 installed
MySQL-python.x86_64 1.2.3-0.1.c1.el5 installed
MySQL-server.x86_64 5.5.29-1.rhel5 installed
perl-DBD-MySQL.x86_64 3.0007-2.el5 installed
[user@local config]$ yum list installed | grep mysql
Unable to read consumer identity
libdbi-dbd-mysql.x86_64 0.8.1a-1.2.2 installed
エラーメッセージは次のとおりです。
Installing mysql2 (0.3.11) with native extensions
Gem::Installer::ExtensionBuildError: ERROR: Failed to build gem native extension.
/home/user/.rvm/rubies/ruby-1.9.3-p385/bin/ruby extconf.rb
checking for rb_thread_blocking_region()... yes
checking for rb_wait_for_single_fd()... yes
checking for mysql.h... yes
checking for errmsg.h... yes
checking for mysqld_error.h... yes
creating Makefile
make
compiling result.c
In file included from ./mysql2_ext.h:39,
from result.c:1:
./client.h:42:7: warning: no newline at end of file
compiling mysql2_ext.c
In file included from ./mysql2_ext.h:39,
from mysql2_ext.c:1:
./client.h:42:7: warning: no newline at end of file
compiling client.c
In file included from ./mysql2_ext.h:39,
from client.c:1:
./client.h:42:7: warning: no newline at end of file
client.c: In function a€?rb_raise_mysql2_errora€?:
client.c:98: warning: ISO C90 forbids mixed declarations and code
client.c: In function a€?rb_mysql_client_socketa€?:
client.c:590: warning: ISO C90 forbids mixed declarations and code
linking shared-object mysql2/mysql2.so
/usr/bin/ld: cannot find -lmysqlclient_r
collect2: ld returned 1 exit status
make: *** [mysql2.so] Error 1
Gem files will remain installed in /home/user/.rvm/gems/ruby-1.9.3-p385/gems/mysql2-0.3.11 for inspection.
Results logged to /home/user/.rvm/gems/ruby-1.9.3-p385/gems/mysql2-0.3.11/ext/mysql2/gem_make.out
An error occurred while installing mysql2 (0.3.11), and Bundler cannot continue.
Make sure that `gem install mysql2 -v '0.3.11'` succeeds before bundling.