1

尝试在 CentOS 6.4 x64 上安装 mysql2 gem，并使用 rpm 安装 MySQL 5.6。

得到这个：

    Installing mysql2 (0.3.11)
    Gem::Installer::ExtensionBuildError: ERROR: Failed to build gem native extension.

            /usr/local/rbenv/versions/1.9.3-p448/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 mysql2_ext.c
    compiling result.c
    compiling client.c
    client.c: In function Б─≤rb_raise_mysql2_errorБ─≥:
    client.c:98: warning: ISO C90 forbids mixed declarations and code
    client.c: In function Б─≤rb_mysql_client_socketБ─≥:
    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 /usr/local/rbenv/versions/1.9.3-p448/lib/ruby/gems/1.9.1/gems/mysql2-0.3.11 for inspection.
    Results logged to /usr/local/rbenv/versions/1.9.3-p448/lib/ruby/gems/1.9.1/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.

编辑：

来自 ldconfig -p 的响应 | grep mysql

    libmysqlclient_r.so.16 (libc6,x86-64) => /usr/lib64/libmysqlclient_r.so.16
    libmysqlclient_r.so.15 (libc6,x86-64) => /usr/lib64/libmysqlclient_r.so.15
    libmysqlclient_r.so.14 (libc6,x86-64) => /usr/lib64/libmysqlclient_r.so.14
    libmysqlclient_r.so.12 (libc6,x86-64) => /usr/lib64/libmysqlclient_r.so.12
    libmysqlclient.so.16 (libc6,x86-64) => /usr/lib64/libmysqlclient.so.16
    libmysqlclient.so.15 (libc6,x86-64) => /usr/lib64/libmysqlclient.so.15
    libmysqlclient.so.14 (libc6,x86-64) => /usr/lib64/libmysqlclient.so.14
    libmysqlclient.so.12 (libc6,x86-64) => /usr/lib64/libmysqlclient.so.12
4

3 回答 3

3

在做任何事情之前，我建议先尝试一下：

sudo yum install mysql-devel
于 2014-05-20T04:42:06.217 回答
1

似乎找不到 libmysql_r.so。要么它没有安装，要么系统找不到它，因为它没有正确配置。你能列出你已经安装的 MySQL 包吗？你能在你的系统上找到 libmysqlclient_r.so 吗？你能给我们的输出ldconfig -p|grep mysql吗？

如果 libmysqlclient_r.so 文件不存在，您可能没有安装 MySQL 客户端软件包。如果安装了正确的包，可以找到 libmysqlclient_r.so 但它没有出现在 的输出中ldconfig -p，您可以通过运行更新 ldconfig 缓存ldconfig -v。它应该拿起图书馆。然后尝试再次安装 gem。

于 2013-10-17T15:56:03.977 回答
1

我也遇到了同样的问题。我解决了rpm -ivh MySQL-shared-5.6.30-1.el6.x86_64.rpm。

于 2016-06-08T06:47:57.763 回答