ruby - 在 mac os 上安装 ruby​​ 2.6.7 时出错 - 如何解决？

Question

尝试将 Ruby 升级到 2.6.7 时出现以下错误:

$ rbenv install 2.6.7

...


implicit declaration of function 'rb_native_mutex_destroy' is invalid in C99
vm.c:2489:34: warning: expression does not compute the number of elements in this array; element type is 'const int', not 'VALUE' (aka 'unsigned long') [-Wsizeof-array-div]
                             sizeof(ec->machine.regs) / sizeof(VALUE));
                                    ~~~~~~~~~~~~~~~~  ^
vm.c:2489:34: note: place parentheses around the 'sizeof(VALUE)' expression to silence this warning

有解决办法吗？

Answer 1

是的，这是上游的一个已知问题:https://bugs.ruby-lang.org/issues/17777
ruby-build 也在跟踪这个问题:https://github.com/rbenv/ruby-build/issues/1489
解决方法是运行以下代码，然后再次安装 ruby​​ 2.6.7:

$ export warnflags=-Wno-error=implicit-function-declaration
$ rbenv install 2.6.7

-or-

$ CFLAGS="-Wno-error=implicit-function-declaration" rbenv install 2.6.7

看起来这也可能会影响具有 native 扩展的gem安装( mysql2是其中之一):

gem install <GEMNAME> -- --with-cflags="-Wno-error=implicit-function-declaration"