1 files changed, 8 insertions, 1 deletions

diff --git a/configure1.in b/configure1.in
index 1494a91fa43..53c798a0e9d 100755
--- a/configure1.in
+++ b/configure1.in
@@ -789,11 +789,18 @@ case "${canonical}" in
     machine=i386 opsys=usg5-3
   ;;
 
-  ## Sequent Symmetry
+  ## Sequent Symmetry running Dynix
   i[345]86-sequent-bsd* )
     machine=symmetry opsys=bsd4-3
   ;;
 
+  ## Sequent Symmetry running DYNIX/ptx
+  ## Use the old cpp rather than the newer ANSI one.
+  i[345]86-sequent-ptx* )
+    machine=sequent-ptx opsys=ptx
+    NON_GNU_CPP="/lib/cpp"
+  ;;
+ 
   ## Unspecified sysv on an ncr machine defaults to svr4.2.
   ## (Plain usg5-4 doesn't turn on POSIX signals, which we need.)
   i[345]86-ncr-sysv* )