1 files changed, 15 insertions, 0 deletions
diff --git a/gcc/c-common.c b/gcc/c-common.c
index c85c23c..251a255 100644
--- a/gcc/c-common.c
+++ b/gcc/c-common.c
@@ -567,6 +567,21 @@ int flag_permissive;
 
 int flag_enforce_eh_specs = 1;
 
+/*  The version of the C++ ABI in use.  The following values are
+    allowed:
+
+    0: The version of the ABI believed most conformant with the 
+       C++ ABI specification.  This ABI may change as bugs are
+       discovered and fixed.  Therefore, 0 will not necessarily
+       indicate the same ABI in different versions of G++.
+
+    1: The version of the ABI first used in G++ 3.2.
+
+    Additional positive integers will be assigned as new versions of
+    the ABI become the default version of the ABI.  */
+
+int flag_abi_version = 1;
+
 /* Nonzero means warn about things that will change when compiling
    with an ABI-compliant compiler.  */