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-rw-r--r--BuildTools/SCons/SConscript.boot1
1 files changed, 1 insertions, 0 deletions
diff --git a/BuildTools/SCons/SConscript.boot b/BuildTools/SCons/SConscript.boot
index d6977fe..2072239 100644
--- a/BuildTools/SCons/SConscript.boot
+++ b/BuildTools/SCons/SConscript.boot
@@ -181,6 +181,7 @@ if not env["assertions"] :
if env["experimental"] :
env.Append(CPPDEFINES = ["SWIFT_EXPERIMENTAL_FT"])
+ env.Append(CPPDEFINES = ["SWIFT_EXPERIMENTAL_WB"])
# If we build shared libs on AMD64, we need -fPIC.
# This should have no performance impact om AMD64