* gcc.misc-tests/linkage.exp: Handle biarch GCC for powerpc64.

[pf3gnuchains/gcc-fork.git] / gcc / testsuite / README.compat

diff --git a/gcc/testsuite/README.compat b/gcc/testsuite/README.compat
index 5295821..b78718f 100644 (file)
--- a/gcc/testsuite/README.compat
+++ b/gcc/testsuite/README.compat
@@ -29,6 +29,11 @@ sets of compiler options.
   varible ALT_LD_LIBRARY_PATH.  If it needs different options to build
   a shared object, define those in ALT_SHOBJ_OPTIONS.
 
+  Normally, only a small amount of compatibility tests is run.
+  Setting RUN_ALL_COMPAT_TESTS=1 in the environment before running the
+  testsuite enables running all compatibility tests, but might take
+  significantly longer than it takes without this variable.
+
 To run only the C++ compatibility tests, optionally specifying an
 alternate compiler and/or sets of options, do from $objdir/gcc: