--- neon-0.32.0/macros/neon.m4.cflags
+++ neon-0.32.0/macros/neon.m4
@@ -1106,8 +1106,8 @@
 AC_DEFUN([NEON_GSSAPI], [
 AC_ARG_WITH(gssapi, AS_HELP_STRING(--without-gssapi, disable GSSAPI support))
 if test "$with_gssapi" != "no"; then
-  ne_save_CFLAGS=$CFLAGS
-  ne_save_LIBS=$NEON_LIBS
+  ne_save_CFLAGS="$CFLAGS"
+  ne_save_LIBS="$NEON_LIBS"
   NE_PKG_CONFIG(NE_GSSAPI, [krb5-gssapi],
     [AC_MSG_NOTICE(using GSSAPI configuration from pkg-config)
      KRB5_CONF_TOOL=pkgconf],
@@ -1142,7 +1142,7 @@
 #endif])])
      break
    ])
-   CFLAGS=$ne_save_CPPFLAGS
+   CFLAGS=$ne_save_CFLAGS
    NEON_LIBS=$ne_save_LIBS
 fi])