1 files changed, 2 insertions, 0 deletions
diff --git a/scons/gallium.py b/scons/gallium.py
index 221d1848f6d..5a0c6fef13c 100755
--- a/scons/gallium.py
+++ b/scons/gallium.py
@@ -289,6 +289,8 @@ def generate(env):
             cppdefines += ['_DEBUG']
     if platform == 'windows':
         cppdefines += ['PIPE_SUBSYSTEM_WINDOWS_USER']
+    if platform == 'haiku':
+        cppdefines += ['BEOS_THREADS']
     if env['embedded']:
         cppdefines += ['PIPE_SUBSYSTEM_EMBEDDED']
     env.Append(CPPDEFINES = cppdefines)