haiku: Fix build through scons corrections and viewport fixes

* Add HAVE_PTHREAD, we do have pthread support wrappers now for
  non-native Haiku threaded applications.
* Viewport changed behavior recently breaking the build.
  We fix this by looking at the gl_context ViewportArray
  (Thanks Brian for the idea)

Acked-by: Brian Paul <[email protected]>

1 files changed, 5 insertions, 0 deletions

diff --git a/scons/gallium.py b/scons/gallium.py
index f505a62be56..e11d4dba312 100755
--- a/scons/gallium.py
+++ b/scons/gallium.py
@@ -269,6 +269,11 @@ def generate(env):
             cppdefines += ['HAVE_ALIAS']
         else:
             cppdefines += ['GLX_ALIAS_UNSUPPORTED']
+    if env['platform'] == 'haiku':
+        cppdefines += [
+            'HAVE_PTHREAD',
+            'HAVE_POSIX_MEMALIGN'
+        ]
     if platform == 'windows':
         cppdefines += [
             'WIN32',