Why do I get error compiling Ruby 3.2 on CentOS 7?-CodePudding

I try to build Ruby 3.2 using ruby-build plugin for rbenv but get some strange compilation error:

compiling bignum.c
In file included from vm_core.h:164:0,
                 from iseq.h:14,
                 from mini_builtin.c:3,
                 from miniinit.c:51:
thread_pthread.h:109:39: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘struct’
 RUBY_EXTERN RB_THREAD_LOCAL_SPECIFIER struct rb_execution_context_struct *ruby_current_ec;
                                       ^
In file included from iseq.h:14:0,
                 from mini_builtin.c:3,
                 from miniinit.c:51:
vm_core.h: In function ‘rb_current_execution_context’:
vm_core.h:1864:34: error: ‘ruby_current_ec’ undeclared (first use in this function)
     rb_execution_context_t *ec = ruby_current_ec;
                                  ^
vm_core.h:1864:34: note: each undeclared identifier is reported only once for each function it appears in

Here is the full log: https://gist.github.com/tycooon/c077a1d99299469bd86131211c565ff7.

Ruby 3.1 builds without any problems on the same machine. What could be the problem?

CodePudding user response：

The problem was centos7 being shipped with too old GCC. There was devtoolset-7-gcc.x86_64 package available on the machine in my case, so I was able to install Ruby 3.2 using the following command:

CC=/opt/rh/devtoolset-7/root/usr/bin/gcc rbenv install 3.2.0 -v

Hope this helps someone.