numpy python extension - added basic SCons build system, started on unit tests

SConstruct

@@ -0,0 +1,51 @@
+import distutils.sysconfig
+import numpy.distutils.misc_util
+import re
+import os
+
+def ApplyFlags(env, flags):
+    flags = env.ParseFlags(flags)
+    flags["CCFLAGS"] = [opt for opt in flags["CCFLAGS"] if not opt.startswith("-O")]
+    flags["CFLAGS"] = [opt for opt in flags["CFLAGS"] if not opt.startswith("-O")]
+    debug = ARGUMENTS.get('debug', 0)
+    if int(debug):
+        try:
+            flags["CPPDEFINES"].remove("NDEBUG")
+        except: pass
+    env.MergeFlags(flags)
+
+def ConfigurePython(env):
+    cflags = " ".join(v for v in distutils.sysconfig.get_config_vars("BASECFLAGS","OPT")
+                      if v is not None).split()
+    libs = " ".join(v for v in distutils.sysconfig.get_config_vars("BLDLIBRARY","LIBS")
+                    if v is not None).split()
+    try: # not valid for C++
+        cflags.remove("-Wstrict-prototypes")
+    except ValueError: pass
+    cflags = [f for f in cflags if not f.startswith("-O")]
+    try:
+        libs.remove("-L.")
+    except ValueError: pass
+    cflags.append("-I%s" % distutils.sysconfig.get_python_inc())
+    ApplyFlags(env, cflags + libs)
+
+def ConfigureNumpy(env):
+    folders = numpy.distutils.misc_util.get_numpy_include_dirs()
+    env.Append(CPPPATH=folders)
+
+env = Environment()
+ConfigurePython(env)
+ConfigureNumpy(env)
+env.Append(LIBS = "boost_python")
+env.Append(CPPPATH = "#")
+
+Export("env")
+lib = SConscript("libs/python/numpy/src/SConscript")
+libpath = os.path.abspath("libs/python/numpy/src")
+if os.environ.has_key("LD_LIBRARY_PATH"):
+    env["ENV"]["LD_LIBRARY_PATH"] = "%s:%s" % (libpath, os.environ["LD_LIBRARY_PATH"])
+else:
+    env["ENV"]["LD_LIBRARY_PATH"] = libpath
+env.Append(LIBPATH=libpath)
+Export("lib")
+SConscript("libs/python/numpy/test/SConscript")