Mysql2 Gem版本0.3.18 uptill 0.4.x韩元'；t安装在我的RubyonRails项目Ubuntu中

我正在从事RubyonRails遗留项目。我试图在我的系统（Ubuntu 20.4）中设置整个项目环境，但我面临以下问题：

运行bundle安装时，出现以下错误：

An error occurred while installing mysql2 (0.3.21), and Bundler cannot continue.
Make sure that `gem install mysql2 -v '0.3.21' --source 'https://rubygems.org/'` succeeds before bundling.

当我再次运行

gem安装mysql2-v“0.3.21”-source时https://rubygems.org/“

我得到以下错误：

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

    current directory: /home/syed/.rvm/gems/ruby-2.2.2/gems/mysql2-0.3.21/ext/mysql2
/usr/share/rvm/rubies/ruby-2.2.2/bin/ruby -I /usr/share/rvm/rubies/ruby-2.2.2/lib/ruby/site_ruby/2.2.0 -r ./siteconf20201005-54852-6qy3z2.rb extconf.rb
checking for ruby/thread.h... yes
checking for rb_thread_call_without_gvl() in ruby/thread.h... yes
checking for rb_thread_blocking_region()... no
checking for rb_wait_for_single_fd()... yes
checking for rb_hash_dup()... yes
checking for rb_intern3()... yes
-----
Using mysql_config at /usr/bin/mysql_config
-----
checking for mysql.h... yes
checking for errmsg.h... yes
checking for mysqld_error.h... yes
-----
Setting libpath to /usr/lib/x86_64-linux-gnu
-----
creating Makefile

current directory: /home/syed/.rvm/gems/ruby-2.2.2/gems/mysql2-0.3.21/ext/mysql2
make "DESTDIR=" clean

current directory: /home/syed/.rvm/gems/ruby-2.2.2/gems/mysql2-0.3.21/ext/mysql2
make "DESTDIR="
compiling infile.c
compiling client.c
client.c: In function ‘nogvl_read_query_result’:
client.c:439:3: error: unknown type name ‘my_bool’; did you mean ‘bool’?
  439 |   my_bool res = mysql_read_query_result(client);
      |   ^~~~~~~
      |   bool
client.c: In function ‘_mysql_client_options’:
client.c:762:3: error: unknown type name ‘my_bool’; did you mean ‘bool’?
  762 |   my_bool boolval;
      |   ^~~~~~~
      |   bool
client.c:797:10: error: ‘MYSQL_SECURE_AUTH’ undeclared (first use in this function); did you mean ‘MYSQL_DEFAULT_AUTH’?
  797 |     case MYSQL_SECURE_AUTH:
      |          ^~~~~~~~~~~~~~~~~
      |          MYSQL_DEFAULT_AUTH
client.c:797:10: note: each undeclared identifier is reported only once for each function it appears in
client.c: In function ‘set_secure_auth’:
client.c:1185:38: error: ‘MYSQL_SECURE_AUTH’ undeclared (first use in this function); did you mean ‘MYSQL_DEFAULT_AUTH’?
 1185 |   return _mysql_client_options(self, MYSQL_SECURE_AUTH, value);
      |                                      ^~~~~~~~~~~~~~~~~
      |                                      MYSQL_DEFAULT_AUTH
client.c:1186:1: warning: control reaches end of non-void function [-Wreturn-type]
 1186 | }
      | ^
make: *** [Makefile:238: client.o] Error 1

make failed, exit code 2

Gem files will remain installed in /home/syed/.rvm/gems/ruby-2.2.2/gems/mysql2-0.3.21 for inspection.
Results logged to /home/syed/.rvm/gems/ruby-2.2.2/extensions/x86_64-linux/2.2.0/mysql2-0.3.21/gem_make.out

• Ubuntu-20.4

• Ruby-2.2.2

• 轨道-4.2.2

• rvm-1.29.10

• MySQL（服务器、客户端等）-8.0.21-0ubuntu0.20.04.4

我尝试过的事情：

捆绑安装

包更新

将MySQL版本降级到5.x.x

尝试安装其他版本的mysql2 gems，如4.x.x

在我的gem文件中：

gem'mysql2'，'~>0.3.21'

在我的Gemlock文件中：

mysql2（0.3.21）

无论我做什么，在执行

捆绑安装时都会出现以下错误：

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

    current directory: /home/syed/.rvm/gems/ruby-2.2.2/gems/mysql2-0.3.21/ext/mysql2
/usr/share/rvm/rubies/ruby-2.2.2/bin/ruby -I /usr/share/rvm/rubies/ruby-2.2.2/lib/ruby/site_ruby/2.2.0 -r ./siteconf20201005-54852-6qy3z2.rb extconf.rb
checking for ruby/thread.h... yes
checking for rb_thread_call_without_gvl() in ruby/thread.h... yes
checking for rb_thread_blocking_region()... no
checking for rb_wait_for_single_fd()... yes
checking for rb_hash_dup()... yes
checking for rb_intern3()... yes
-----
Using mysql_config at /usr/bin/mysql_config
-----
checking for mysql.h... yes
checking for errmsg.h... yes
checking for mysqld_error.h... yes
-----
Setting libpath to /usr/lib/x86_64-linux-gnu
-----
creating Makefile

current directory: /home/syed/.rvm/gems/ruby-2.2.2/gems/mysql2-0.3.21/ext/mysql2
make "DESTDIR=" clean

current directory: /home/syed/.rvm/gems/ruby-2.2.2/gems/mysql2-0.3.21/ext/mysql2
make "DESTDIR="
compiling infile.c
compiling client.c
client.c: In function ‘nogvl_read_query_result’:
client.c:439:3: error: unknown type name ‘my_bool’; did you mean ‘bool’?
  439 |   my_bool res = mysql_read_query_result(client);
      |   ^~~~~~~
      |   bool
client.c: In function ‘_mysql_client_options’:
client.c:762:3: error: unknown type name ‘my_bool’; did you mean ‘bool’?
  762 |   my_bool boolval;
      |   ^~~~~~~
      |   bool
client.c:797:10: error: ‘MYSQL_SECURE_AUTH’ undeclared (first use in this function); did you mean ‘MYSQL_DEFAULT_AUTH’?
  797 |     case MYSQL_SECURE_AUTH:
      |          ^~~~~~~~~~~~~~~~~
      |          MYSQL_DEFAULT_AUTH
client.c:797:10: note: each undeclared identifier is reported only once for each function it appears in
client.c: In function ‘set_secure_auth’:
client.c:1185:38: error: ‘MYSQL_SECURE_AUTH’ undeclared (first use in this function); did you mean ‘MYSQL_DEFAULT_AUTH’?
 1185 |   return _mysql_client_options(self, MYSQL_SECURE_AUTH, value);
      |                                      ^~~~~~~~~~~~~~~~~
      |                                      MYSQL_DEFAULT_AUTH
client.c:1186:1: warning: control reaches end of non-void function [-Wreturn-type]
 1186 | }
      | ^
make: *** [Makefile:238: client.o] Error 1

make failed, exit code 2

Gem files will remain installed in /home/syed/.rvm/gems/ruby-2.2.2/gems/mysql2-0.3.21 for inspection.
Results logged to /home/syed/.rvm/gems/ruby-2.2.2/extensions/x86_64-linux/2.2.0/mysql2-0.3.21/gem_make.out


注:
我有无法更改rails或ruby版本的限制，因为这是一个遗留项目。
您有解决此问题的方法吗？因为我面临着同样的问题。