Add missing quotes.
diff --git a/configure b/configure
index 7b99041..27fe217 100755
--- a/configure
+++ b/configure
@@ -1,5 +1,5 @@
 #! /bin/sh
-# From configure.in Revision: 77031 .
+# From configure.in Revision: 77169 .
 # Guess values for system-dependent variables and create Makefiles.
 # Generated by GNU Autoconf 2.61 for python 2.7.
 #
@@ -27376,7 +27376,7 @@
 echo "${ECHO_T}$ac_cv_have_long_long_format" >&6; }
 fi
 
-if test $ac_cv_have_long_long_format = yes
+if test "$ac_cv_have_long_long_format" = yes
 then
 
 cat >>confdefs.h <<\_ACEOF