diff --git a/ChangeLog b/ChangeLog
index d7fcb7f0ab..4987eb0331 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+Fri Jun 16 21:23:59 2000  WATANABE Hirofumi  <eban@os.rim.or.jp>
+
+	* configure.in: add pause(2) checking.
+
+	* eval.c: define pause() if missing.
+
 Fri Jun 16 05:18:45 2000  Yasuhiro Fukuma  <yasuf@bsdclub.org>
 
 	* configure.in: FreeBSD: do not link dummy libxpg4 which was
diff --git a/configure.in b/configure.in
index 6cb2b47b14..5696dfb6e2 100644
--- a/configure.in
+++ b/configure.in
@@ -222,7 +222,7 @@ AC_CHECK_FUNCS(fmod killpg drand48 random wait4 waitpid syscall getcwd\
 	      truncate chsize times utimes fcntl lockf setitimer\
 	      setruid seteuid setreuid setrgid setegid setregid\
 	      getpgrp setpgrp getpgid setpgid getgroups getpriority\
-	      dlopen sigprocmask sigaction _setjmp setsid getrlimit)
+	      dlopen sigprocmask sigaction _setjmp setsid getrlimit pause)
 AC_STRUCT_TIMEZONE
 AC_CACHE_CHECK(for external int daylight, rb_cv_have_daylight,
   [AC_TRY_LINK([#include <time.h>
diff --git a/eval.c b/eval.c
index fab7a9ee57..0282bbda02 100644
--- a/eval.c
+++ b/eval.c
@@ -69,6 +69,14 @@ struct timeval {
 
 #include <sys/stat.h>
 
+#if !defined HAVE_PAUSE
+# if defined _WIN32 && !defined __CYGWIN__
+#  define pause() Sleep(INFINITE)
+# else
+#  define pause() sleep(0x7fffffff)
+# endif
+#endif
+
 VALUE rb_cProc;
 static VALUE rb_cBinding;
 static VALUE proc_call _((VALUE,VALUE));