diff --git a/ChangeLog b/ChangeLog
index 8a5f7354d9..7e2beb6020 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Mon Mar 30 16:34:51 2015  NARUSE, Yui  <naruse@ruby-lang.org>
+
+	* configure.in: ac_cv_func_vfork=no on sparc-solaris.
+	  sparc-solaris deprecates vfork though i386-solaris doesn't.
+
 Mon Mar 30 14:42:41 2015  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* win32/win32.c (fileattr_to_unixmode, winnt_lstat): deal with
diff --git a/configure.in b/configure.in
index db37cd6644..201b3b21c6 100644
--- a/configure.in
+++ b/configure.in
@@ -1148,6 +1148,10 @@ main()
 		ac_cv_func_isinf=yes
 		ac_cv_func_isnan=yes
 		],
+[solaris*], [	LIBS="-lm $LIBS"
+	AS_CASE(["$target_cpu"],
+	 [sparc*], [ac_cv_func_vfork=no])
+		],
 [nacl], [
   LIBS="-lm $LIBS"
   if test "${nacl_cv_build_variant}" = "newlib"; then