diff --git a/configure.in.in b/configure.in.in
index adca9209d8d..89529e38e43 100644
--- a/configure.in.in
+++ b/configure.in.in
@@ -68,6 +68,9 @@ AC_SUBST(PHP_VERSION)
 AM_CONFIG_HEADER(php_config.h)
 AM_MAINTAINER_MODE
 
+phplibdir=$libdir/php
+AC_SUBST(phplibdir)
+
 dnl We want this one before the checks, so the checks can modify CFLAGS.
 test -z "$CFLAGS" && auto_cflags=1
 
@@ -966,7 +969,6 @@ AC_SUBST(EXTRA_LIBS)
 # reading config stubs
 esyscmd(./scripts/config-stubs)
 
-
 divert(4)
 
 dnl If we're using gcc and the user hasn't specified CFLAGS, add -O2.