diff --git a/configure.ac b/configure.ac
index ef7490362..9c1df03ab 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1301,6 +1301,20 @@ AC_HELP_STRING([--with-included-js[[[=shared]]]], [Use the JS engine (SpiderMonk
 dnl TODO use an $enable_js var
 AM_CONDITIONAL([JS], [[[[ $with_included_js = yes ]]]])
 
+dnl
+dnl
+dnl jemalloc
+dnl
+dnl
+
+RB_CHK_SYSHEADER(jemalloc/jemalloc.h, [JEMALLOC_H])
+AC_CHECK_LIB(jemalloc, malloc,
+[
+	jemalloc="yes"
+], [
+	jemalloc="no"
+])
+
 dnl
 dnl
 dnl Additional linkages