Try fixing quoting for ldflags

diff --git a/builder b/builder
index ac46689..e21c767 100755 (executable)
--- a/builder
+++ b/builder
@@ -148,7 +148,7 @@ prefix = options.prefix
 root_command = options.root_command
 dist = options.dist
 configure_opts = ['--prefix', prefix,
-                  "LDFLAGS=-Wl,-L"+prefix+"/lib -Wl,-rpath="+prefix+"/lib",
+                  "LDFLAGS='-Wl,-L"+prefix+"/lib -Wl,-rpath="+prefix+"/lib'",
                   'CPPFLAGS=-I '+prefix+'/include',
                   '--with-system-libtool', '--with-system-libltdl',
                   '--enable-tls', '--with-gssapi='+prefix,