(using NON_GNU_CPP): Fix test for CPP already set.

diff --git a/configure1.in b/configure1.in
index 0e59358a6d5629acae600962079e90d7dd213008..90c21084b4f819fc37b7374caa1e0b3843a25770 100755 (executable)
--- a/configure1.in
+++ b/configure1.in
@@ -1109,7 +1109,7 @@ esac
 #### Some systems specify a CPP to use unless we are using GCC.
 #### Now that we know whether we are using GCC, we can decide whether
 #### to use that one.
-if [ "x$NON_GNU_CPP" = x ] || [ x$GCC = x1 ] || [ "x$CPP" = x ]
+if [ "x$NON_GNU_CPP" = x ] || [ x$GCC = x1 ] || [ "x$CPP" != x ]
 then true
 else
   CPP="$NON_GNU_CPP"