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-rw-r--r--configure.ac4
1 files changed, 4 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac
index 71f831636c..b878e5cbde 100644
--- a/configure.ac
+++ b/configure.ac
@@ -4364,6 +4364,10 @@ AS_IF([test "${universal_binary-no}" = yes ], [
arch="${target_cpu}-${target_os}"
])
AC_DEFINE_UNQUOTED(RUBY_PLATFORM, "$arch")
+
+ AS_IF([test "$arch" = "s390x-linux"], [
+ AC_DEFINE_UNQUOTED(USE_MN_THREADS, 0)
+ ])
])
unset sitearch