Scons missed include for pthread.

source/blender/editors/object/SConscript

@@ -10,6 +10,13 @@ incs += ' ../../render/extern/include ../../gpu' # for object_bake.c
 
 defs = []
 
+if env['OURPLATFORM'] == 'linux2':
+    cflags='-pthread'
+    incs += ' ../../../extern/binreloc/include'
+
+if env['OURPLATFORM'] in ('win32-vc', 'win32-mingw', 'linuxcross', 'win64-vc'):
+    incs += ' ' + env['BF_PTHREADS_INC']
+
 if not env['WITH_BF_PYTHON']:
 	defs.append('DISABLE_PYTHON')