libguestfs: Make SKIP_* variables more robust.

diff --git a/config.ml b/config.ml
index 6820ddc..5fa42de 100644 (file)
--- a/config.ml
+++ b/config.ml
@@ -45,7 +45,8 @@ let libguestfs_localconfigure source =
 
 let libguestfs_localenv supermin =
   let skips =
-    shlines "grep SKIP_ %s" (fedora_specfile "libguestfs" "master") in
+    shlines "grep 'export SKIP_' %s"
+            (fedora_specfile "libguestfs" "master") in
 
   "\
 # Fails under valgrind because of a leak in the fuse library,