Question

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

获取此信息：

    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.

修改

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

Answer 1

在做任何事情之前，我建议尝试这个：

sudo yum install mysql-devel

Answer 2

似乎无法找到libmysql_r.so。它未安装或系统无法找到它，因为它未正确配置。你能列出你安装的MySQL软件包吗？你能在系统上找到libmysqlclient_r.so吗？你能告诉我们ldconfig -p|grep mysql的输出吗？

如果没有libmysqlclient_r.so文件，则可能没有安装MySQL客户端软件包。如果安装了正确的软件包，则可以找到libmysqlclient_r.so，但它不会出现在ldconfig -p的输出中，您可以通过运行ldconfig -v来更新ldconfig缓存。它应该拿起图书馆。然后尝试再次安装宝石。

Answer 3

我也遇到了同样的问题。我通过rpm -ivh MySQL-shared-5.6.30-1.el6.x86_64.rpm解决了这个问题。

使用MySQL 5.6的CentOS 6.4 x64上的mysql2 gem安装失败

3 个答案: