* configure.in: add #include <errno.h> in AC_CHECK_DECLS().

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@2426 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,7 @@
+Fri May  3 20:19:00 2002  WATANABE Hirofumi  <eban@ruby-lang.org>
+
+	* configure.in: add #include <errno.h> in AC_CHECK_DECLS().
+
 Thu May  2 18:27:13 2002  WATANABE Hirofumi  <eban@ruby-lang.org>
 
 	* ext/extmk.rb.in, lib/mkmf.rb: use 'do...end' instead of '{}' for

configure.in

@@ -187,7 +187,8 @@ done])
 AC_DEFINE_UNQUOTED([NORETURN(x)], $rb_cv_noreturn)
 
 dnl Check whether we need to define sys_nerr locally
-AC_CHECK_DECLS([sys_nerr])
+AC_CHECK_DECLS([sys_nerr], [], [], [$ac_includes_default
+#include <errno.h>])
 
 dnl whether link libc_r or not
 AC_ARG_WITH(libc_r,