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MacOS 10.14安装和brew更新后无法安装mysql gem

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在macOS 10.14安装Brew更新后,我的开发系统坏了.

我无法安装mysql gem.在尝试安装时,我得到：

$gem install mysql -v '2.8.1' --source 'http://rubygems.org/'
Building native extensions.  This could take a while...
ERROR:  Error installing mysql:
    ERROR: Failed to build gem native extension.

    current directory: /Users/MYACCOUNT/.rvm/gems/ruby-1.8.7-p374@WEBPROJECT/gems/mysql-2.8.1/ext/mysql_api
/Users/MYACCOUNT/.rvm/rubies/ruby-1.8.7-p374/bin/ruby -r ./siteconf20180926-49343-waujia-0.rb extconf.rb
checking for mysql_ssl_set()... yes
checking for rb_str_set_len()... yes
checking for rb_thread_start_timer()... yes
checking for mysql.h... no
checking for mysql/mysql.h... 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=/Users/MYACCOUNT/.rvm/rubies/ruby-1.8.7-p374/bin/ruby
    --with-mysql-config
    --without-mysql-config

To see why this extension failed to compile, please check the mkmf.log which can be found here:

  /Users/MYACCOUNT/.rvm/gems/ruby-1.8.7-p374@WEBPROJECT/extensions/x86-darwin-14/1.8/mysql-2.8.1/mkmf.log

extconf failed, exit code 1

Gem files will remain installed in /Users/MYACCOUNT/.rvm/gems/ruby-1.8.7-p374@WEBPROJECT/gems/mysql-2.8.1 for inspection.
Results logged to /Users/MYACCOUNT/.rvm/gems/ruby-1.8.7-p374@WEBPROJECT/extensions/x86-darwin-14/1.8/mysql-2.8.1/gem_make.out

相对mkmf.log是：

have_func: checking for mysql_ssl_set()... -------------------- yes

"/usr/local/bin/gcc-4.9 -o conftest -I. -I/Users/MYACCOUNT/.rvm/rubies/ruby-1.8.7-p374/lib/ruby/1.8/i686-darwin14.4.0 -I.  -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE   -I/usr/local/Cellar/mysql/5.7.21/include/mysql  -I/usr/local/opt/libyaml/include -I/usr/local/opt/readline/include -I/usr/local/opt/libksba/include -I/usr/local/opt/openssl098/include -O2 -fno-tree-dce -fno-optimize-sibling-calls  -fno-common -pipe -fno-common   conftest.c  -L. -L/Users/MYACCOUNT/.rvm/rubies/ruby-1.8.7-p374/lib -L. -L/usr/local/opt/libyaml/lib -L/usr/local/opt/readline/lib -L/usr/local/opt/libksba/lib -L/usr/local/opt/openssl098/lib    -L/usr/local/Cellar/mysql/5.7.21/lib -lmysqlclient -lssl -lcrypto  -lruby-static -L/usr/local/Cellar/mysql/5.7.21/lib -lmysqlclient -lssl -lcrypto  -ldl -lobjc  "
conftest.c: In function 't':
conftest.c:3:53: error: 'mysql_ssl_set' undeclared (first use in this function)
 int t() { void ((*volatile p)()); p = (void ((*)()))mysql_ssl_set; return 0; }
                                                     ^
conftest.c:3:53: note: each undeclared identifier is reported only once for each function it appears in
checked program was:
/* begin */
1: /*top*/
2: int main() { return 0; }
3: int t() { void ((*volatile p)()); p = (void ((*)()))mysql_ssl_set; return 0; }
/* end */

"/usr/local/bin/gcc-4.9 -o conftest -I. -I/Users/MYACCOUNT/.rvm/rubies/ruby-1.8.7-p374/lib/ruby/1.8/i686-darwin14.4.0 -I.  -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE   -I/usr/local/Cellar/mysql/5.7.21/include/mysql  -I/usr/local/opt/libyaml/include -I/usr/local/opt/readline/include -I/usr/local/opt/libksba/include -I/usr/local/opt/openssl098/include -O2 -fno-tree-dce -fno-optimize-sibling-calls  -fno-common -pipe -fno-common   conftest.c  -L. -L/Users/MYACCOUNT/.rvm/rubies/ruby-1.8.7-p374/lib -L. -L/usr/local/opt/libyaml/lib -L/usr/local/opt/readline/lib -L/usr/local/opt/libksba/lib -L/usr/local/opt/openssl098/lib    -L/usr/local/Cellar/mysql/5.7.21/lib -lmysqlclient -lssl -lcrypto  -lruby-static -L/usr/local/Cellar/mysql/5.7.21/lib -lmysqlclient -lssl -lcrypto  -ldl -lobjc  "
ld: warning: directory not found for option '-L/usr/local/opt/openssl098/lib'
checked program was:
/* begin */
1: /*top*/
2: int main() { return 0; }
3: int t() { mysql_ssl_set(); return 0; }
/* end */

--------------------

have_func: checking for rb_str_set_len()... -------------------- yes

"/usr/local/bin/gcc-4.9 -o conftest -I. -I/Users/MYACCOUNT/.rvm/rubies/ruby-1.8.7-p374/lib/ruby/1.8/i686-darwin14.4.0 -I.  -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE   -I/usr/local/Cellar/mysql/5.7.21/include/mysql  -I/usr/local/opt/libyaml/include -I/usr/local/opt/readline/include -I/usr/local/opt/libksba/include -I/usr/local/opt/openssl098/include -O2 -fno-tree-dce -fno-optimize-sibling-calls  -fno-common -pipe -fno-common   conftest.c  -L. -L/Users/MYACCOUNT/.rvm/rubies/ruby-1.8.7-p374/lib -L. -L/usr/local/opt/libyaml/lib -L/usr/local/opt/readline/lib -L/usr/local/opt/libksba/lib -L/usr/local/opt/openssl098/lib    -L/usr/local/Cellar/mysql/5.7.21/lib -lmysqlclient -lssl -lcrypto  -lruby-static -L/usr/local/Cellar/mysql/5.7.21/lib -lmysqlclient -lssl -lcrypto  -ldl -lobjc  "
conftest.c: In function 't':
conftest.c:3:53: error: 'rb_str_set_len' undeclared (first use in this function)
 int t() { void ((*volatile p)()); p = (void ((*)()))rb_str_set_len; return 0; }
                                                     ^
conftest.c:3:53: note: each undeclared identifier is reported only once for each function it appears in
checked program was:
/* begin */
1: /*top*/
2: int main() { return 0; }
3: int t() { void ((*volatile p)()); p = (void ((*)()))rb_str_set_len; return 0; }
/* end */

"/usr/local/bin/gcc-4.9 -o conftest -I. -I/Users/MYACCOUNT/.rvm/rubies/ruby-1.8.7-p374/lib/ruby/1.8/i686-darwin14.4.0 -I.  -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE   -I/usr/local/Cellar/mysql/5.7.21/include/mysql  -I/usr/local/opt/libyaml/include -I/usr/local/opt/readline/include -I/usr/local/opt/libksba/include -I/usr/local/opt/openssl098/include -O2 -fno-tree-dce -fno-optimize-sibling-calls  -fno-common -pipe -fno-common   conftest.c  -L. -L/Users/MYACCOUNT/.rvm/rubies/ruby-1.8.7-p374/lib -L. -L/usr/local/opt/libyaml/lib -L/usr/local/opt/readline/lib -L/usr/local/opt/libksba/lib -L/usr/local/opt/openssl098/lib    -L/usr/local/Cellar/mysql/5.7.21/lib -lmysqlclient -lssl -lcrypto  -lruby-static -L/usr/local/Cellar/mysql/5.7.21/lib -lmysqlclient -lssl -lcrypto  -ldl -lobjc  "
ld: warning: directory not found for option '-L/usr/local/opt/openssl098/lib'
checked program was:
/* begin */
1: /*top*/
2: int main() { return 0; }
3: int t() { rb_str_set_len(); return 0; }
/* end */

--------------------

have_func: checking for rb_thread_start_timer()... -------------------- yes

"/usr/local/bin/gcc-4.9 -o conftest -I. -I/Users/MYACCOUNT/.rvm/rubies/ruby-1.8.7-p374/lib/ruby/1.8/i686-darwin14.4.0 -I.  -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE   -I/usr/local/Cellar/mysql/5.7.21/include/mysql  -I/usr/local/opt/libyaml/include -I/usr/local/opt/readline/include -I/usr/local/opt/libksba/include -I/usr/local/opt/openssl098/include -O2 -fno-tree-dce -fno-optimize-sibling-calls  -fno-common -pipe -fno-common   conftest.c  -L. -L/Users/MYACCOUNT/.rvm/rubies/ruby-1.8.7-p374/lib -L. -L/usr/local/opt/libyaml/lib -L/usr/local/opt/readline/lib -L/usr/local/opt/libksba/lib -L/usr/local/opt/openssl098/lib    -L/usr/local/Cellar/mysql/5.7.21/lib -lmysqlclient -lssl -lcrypto  -lruby-static -L/usr/local/Cellar/mysql/5.7.21/lib -lmysqlclient -lssl -lcrypto  -ldl -lobjc  "
conftest.c: In function 't':
conftest.c:3:53: error: 'rb_thread_start_timer' undeclared (first use in this function)
 int t() { void ((*volatile p)()); p = (void ((*)()))rb_thread_start_timer; return 0; }
                                                     ^
conftest.c:3:53: note: each undeclared identifier is reported only once for each function it appears in
checked program was:
/* begin */
1: /*top*/
2: int main() { return 0; }
3: int t() { void ((*volatile p)()); p = (void ((*)()))rb_thread_start_timer; return 0; }
/* end */

"/usr/local/bin/gcc-4.9 -o conftest -I. -I/Users/MYACCOUNT/.rvm/rubies/ruby-1.8.7-p374/lib/ruby/1.8/i686-darwin14.4.0 -I.  -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE   -I/usr/local/Cellar/mysql/5.7.21/include/mysql  -I/usr/local/opt/libyaml/include -I/usr/local/opt/readline/include -I/usr/local/opt/libksba/include -I/usr/local/opt/openssl098/include -O2 -fno-tree-dce -fno-optimize-sibling-calls  -fno-common -pipe -fno-common   conftest.c  -L. -L/Users/MYACCOUNT/.rvm/rubies/ruby-1.8.7-p374/lib -L. -L/usr/local/opt/libyaml/lib -L/usr/local/opt/readline/lib -L/usr/local/opt/libksba/lib -L/usr/local/opt/openssl098/lib    -L/usr/local/Cellar/mysql/5.7.21/lib -lmysqlclient -lssl -lcrypto  -lruby-static -L/usr/local/Cellar/mysql/5.7.21/lib -lmysqlclient -lssl -lcrypto  -ldl -lobjc  "
ld: warning: directory not found for option '-L/usr/local/opt/openssl098/lib'
checked program was:
/* begin */
1: /*top*/
2: int main() { return 0; }
3: int t() { rb_thread_start_timer(); return 0; }
/* end */

--------------------

have_header: checking for mysql.h... -------------------- no

"/usr/local/bin/gcc-4.9 -E -I. -I/Users/MYACCOUNT/.rvm/rubies/ruby-1.8.7-p374/lib/ruby/1.8/i686-darwin14.4.0 -I.  -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE   -I/usr/local/Cellar/mysql/5.7.21/include/mysql  -I/usr/local/opt/libyaml/include -I/usr/local/opt/readline/include -I/usr/local/opt/libksba/include -I/usr/local/opt/openssl098/include -O2 -fno-tree-dce -fno-optimize-sibling-calls  -fno-common -pipe -fno-common    conftest.c -o conftest.i"
In file included from conftest.c:1:0:
/usr/local/Cellar/mysql/5.7.21/include/mysql/mysql.h:35:23: fatal error: sys/types.h: No such file or directory
 #include <sys/types.h>
                       ^
compilation terminated.
checked program was:
/* begin */
1: #include <mysql.h>
/* end */

--------------------

have_header: checking for mysql/mysql.h... -------------------- no

"/usr/local/bin/gcc-4.9 -E -I. -I/Users/MYACCOUNT/.rvm/rubies/ruby-1.8.7-p374/lib/ruby/1.8/i686-darwin14.4.0 -I.  -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE   -I/usr/local/Cellar/mysql/5.7.21/include/mysql  -I/usr/local/opt/libyaml/include -I/usr/local/opt/readline/include -I/usr/local/opt/libksba/include -I/usr/local/opt/openssl098/include -O2 -fno-tree-dce -fno-optimize-sibling-calls  -fno-common -pipe -fno-common    conftest.c -o conftest.i"
In file included from conftest.c:1:0:
/usr/local/include/mysql/mysql.h:35:23: fatal error: sys/types.h: No such file or directory
 #include <sys/types.h>
                       ^
compilation terminated.
checked program was:
/* begin */
1: #include <mysql/mysql.h>
/* end */

--------------------

我通过Brew安装了mysql并保持mysql,mysql @ 5.6或mysql@5.7有效.路径在.bash_profile中设置：

### Customize path for MYSQL
MYSQL=/usr/local/mysql/bin
export PATH=$PATH:$MYSQL
export DYLD_LIBRARY_PATH=/usr/local/mysql/lib:$DYLD_LIBRARY_PATH

当我切换到mysql@5.6或5.7时,我相应地改变了路径.
一般来说,mysql似乎存在一些问题.

当Ruby 1.8.7中的一个webapp,运行mysql数据库的Rails 3.2.5时,另外两个具有相同技术堆栈的webapp无法重新安装mysql gem或连接到数据库.

$rake db:migrate --trace
** Invoke db:migrate (first_time)
** Invoke environment (first_time)
** Execute environment
rake aborted!
Mysql::Error: Table 'dev_WEBPROJECT.safts' doesn't exist: SHOW FULL FIELDS FROM `safts`
/Users/MYACCOUNT/.rvm/gems/ruby-1.8.7-p374@WEBPROJECT/gems/activerecord-3.2.5/lib/active_record/connection_adapters/abstract_mysql_adapter.rb:243:in `query'
/Users/MYACCOUNT/.rvm/gems/ruby-1.8.7-p374@WEBPROJECT/gems/activerecord-3.2.5/lib/active_record/connection_adapters/abstract_mysql_adapter.rb:243:in `execute'
/Users/MYACCOUNT/.rvm/gems/ruby-1.8.7-p374@WEBPROJECT/gems/activerecord-3.2.5/lib/active_record/connection_adapters/abstract_adapter.rb:280:in `log'
.
.
.
/Users/MYACCOUNT/.rvm/gems/ruby-1.8.7-p374@WEBPROJECT/gems/rake-0.9.6/lib/rake/application.rb:70:in `run'
/Users/MYACCOUNT/.rvm/gems/ruby-1.8.7-p374@WEBPROJECT/gems/rake-0.9.6/bin/rake:37
/Users/MYACCOUNT/.rvm/gems/ruby-1.8.7-p374@WEBPROJECT/bin/rake:22:in `load'
/Users/MYACCOUNT/.rvm/gems/ruby-1.8.7-p374@WEBPROJECT/bin/rake:22
/Users/MYACCOUNT/.rvm/gems/ruby-1.8.7-p374@WEBPROJECT/bin/ruby_executable_hooks:15
Tasks: TOP => db:migrate => environment

有人可以帮忙吗？

解决方法:

Mojave更改了编译C扩展所需的头文件的位置.您可能需要运行以下命令来安装mysql gem：

sudo installer -pkg /Library/Developer/CommandLineTools/Packages/macOS_SDK_headers_for_macOS_10.14.pkg -target /

参考：https://gorails.com/setup/osx/10.14-mojave

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mysql是在开发工作中最常用的一种关系型数据库,他是一个开源的数据库管理西宫,有MySQL AB公司开发,发布并支持的.MySQL是一个跨平台的开源关系型数据库管理系统,广泛的应用在中小型网站的开发中.具有实现数据共享,减少数据冗余,采用特定的数据类型,具有较高的数据独立性和统一的数据控制功能的有点.一.mysql安装1.开始下载,官网地址:https://www.mysql.com/downloads/.找到DOWNLOADS---Community---MySQL Community Downloads我选择...

Mac安装MySQL设置初始密码

在Mac上安装MySQL之后，通过Navigate登录本地数据连接，发现没有密码，而在安装MySQL过程中，是没有设置过密码的。其实，刚刚安装完，是有一个界面，分配了一个初始化的密码，可能大家都像我一样，直接点击就跳过去了，没有过保存，所以才需要对刚刚安装好的MySQL重新设置新的密码;　　直接上解决方案，命令行都直接用就成了：　　一、第一步：停止MySQL服务。　　关闭MySQL服务的操作：　　苹果->系统偏好设置->最下边点MySQL 在...

Mac笔记本安装mysql

Mac笔记本安装mysql在浏览器当中输入地址：dev.mysql.com/downloads/mysql/，如下图所示：进入以下界面，直接点击下面位置 ,选择跳过登录，点过这后直接下载，如下图所示：下载完成后, 直接双击打开,弹出以下界面,再继续点击即可，如下图所示：2 q 下面一直点继续直至安装完成。启动MySQL，安装完毕后,到设置当中查看以下选项,如果里面有MySQL说明已经安装成功，如下图所示：点击后, 启动MySQL ，如下图所示：修改数据库密码 ...

Mac下Python安装mysql不成功解决办法

如果是安装的是mysql-python,后import MySQLdb报错. 那么建议不要使用mysql-python了. 在Python3.6版本以后也没有支持.我个人使用的是第三方库pymysql,在终端中输入以下代码安装sudo pip install pymysql安装后, 如果使用的是flask_sqlalchemy 注意更改驱动的名字为pymysqlSQLALCHEMY_DATABASE_URI = [数据库名]+[数据库中间件(驱动)]://[用户名]: [password]@[主机IP地址]:[端口号]/[数据库名字]?charset=utf8SQLALCHEMY_TRACK_MO...

苹果macosx下tar.gz方式安装MySQL

在 Mac 系统上, 安装 MySQL Server 一般是用 DMG 包在图形化界面下按提示安装, 此外 MySQL 还提供了 Compressed TAR Archive 二进制包安装方式, 即免安装解压运行版, 相比 DMG 包, 免安装版过程更为简洁, 纯命令行操作, 更符合码客们的折腾精神。系统环境: OS X Yosemite 10.10.3 登录用户: wid (有 sudo 权限) MySQL版本: 5.6.24 (mysql-5.6.24-osx10.9-x86_64.tar.gz) MySQL下载: http://dev.mysql.com/downloads/mysql/找到下载...

MAC 安装 MySQL【图】

一:在官网下载 MySQL 安装包为了安装更方便,建议下载 dmg 包二:安装 MySQL双击 mysql-5.7.31-macos10.14-x86_64.dmg 文件，加载镜像双击 mysql-5.7.31-macos10.14-x86_64.pkg ，开始安装弹出安装界面之后一直点击继续,安装完成之后记下临时密码三:启动 MySQL 服务打开系统偏好设置,找到MySQL 此时 MySQL 是关闭的,点击 start 以打开 MySQL 服务打开终端,输入 PATH="$PATH":/usr/local/mysql/bin 为 MySQL 添加环境变量通过 my...

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MacOS 10.14安装和brew更新后无法安装mysql gem

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