Define NON_GNU_CPP on alpha-dec-osf5+.

1 files changed, 6 insertions, 0 deletions

diff --git a/configure.in b/configure.in
index 2c999c2ce5f..a8c135c53ee 100644
--- a/configure.in
+++ b/configure.in
@@ -252,6 +252,12 @@ case "${canonical}" in
     # This is needed to find X11R6.1 libraries for certain tests.
     NON_GCC_LINK_TEST_OPTIONS=-Wl,-rpath,/usr/X11R6/lib
     GCC_LINK_TEST_OPTIONS=-Wl,-rpath,/usr/X11R6/lib
+    case "${canonical}" in
+    # This is necessary on 5.0 to avoid mangling src/Makefile.
+    # Separated out in case it causes problems on earlier versions.
+    alpha*-dec-osf[5-9])
+      NON_GNU_CPP='cc -E -std0' ;;
+    esac
   ;;
 
   alpha*-*-linux-gnu* )