HACK: temporary deal with bugs in waf python tool.

bscript

@@ -43,6 +43,32 @@ def check_blas_lapack(conf):
     #conf.env.HAS_LAPACK = True
     #conf.env.LIB_LAPACK = ["lapack", "f77blas", "cblas", "atlas"]
 
+def remove_flag(name, flag):
+    while True:
+        if name in flag:
+            i = flag.index(name)
+            flag.pop(i)
+        else:
+            break
+
+def remove_flag_postvalue(name, flag):
+    while True:
+        if name in flag:
+            i = flag.index(name)
+            flag.pop(i)
+            flag.pop(i)
+        else:
+            break
+
+def remove_flag_prevalue(name, flag):
+    while True:
+        if name in flag:
+            i = flag.index(name)
+            flag.pop(i-1)
+            flag.pop(i-1)
+        else:
+            break
+
 @hooks.pre_configure()
 def pre_configure(context):
     conf = context.waf_context
@@ -56,6 +82,16 @@ def pre_configure(context):
         # FIXME: fix upstream waf tool to work on mac os X
         conf.env.CC = ["/usr/bin/gcc-4.0"]
         conf.env.LINK_CC = ["/usr/bin/gcc-4.0"]
+        # FIXME: fix upstream waf tool to avoid linking against libpython2.6.so
+        # (cause crashes when importing the extension)
+        name = "python%s" % ".".join([str(i) for i in sys.version_info[:2]])
+        remove_flag(name, conf.env.LIB_PYEXT)
+        remove_flag("-dynamiclib", conf.env.LINKFLAGS_cshlib)
+        remove_flag_postvalue("-compatibility_version", conf.env.CFLAGS_cshlib)
+        remove_flag_postvalue("-current_version", conf.env.CFLAGS_cshlib)
+        remove_flag_prevalue("ppc", conf.env.CFLAGS_PYEXT)
+        remove_flag_prevalue("ppc", conf.env.LINKFLAGS_PYEXT)
+        conf.env.LINKFLAGS_cshlib.extend(["-undefined", "dynamic_lookup", "-bundle"])
 
     conf.env.CFLAGS_PYEXT.append("-Wfatal-errors")
     check_blas_lapack(conf)