| Rebased on https://patch-diff.githubusercontent.com/raw/ruby/ruby/pull/2995.patch | |
| which was originally based on this file. | |
| --- a/configure.ac | |
| +++ b/configure.ac | |
| @@ -2471,7 +2471,10 @@ AS_CASE([$rb_cv_coroutine], [yes|''], [ | |
| rb_cv_coroutine=copy | |
| ], | |
| [ | |
| - rb_cv_coroutine=ucontext | |
| + AC_CHECK_FUNCS([getcontext swapcontext makecontext], | |
| + [rb_cv_coroutine=ucontext], | |
| + [rb_cv_coroutine=copy; break] | |
| + ) | |
| ] | |
| ) | |
| AC_MSG_RESULT(${rb_cv_coroutine}) |