Index: pycrypto-2.6/setup.py
===================================================================
--- pycrypto-2.6.orig/setup.py
+++ pycrypto-2.6/setup.py
@@ -271,7 +271,8 @@ class PCTBuildConfigure(Command):
         if not os.path.exists("config.status"):
             if os.system("chmod 0755 configure") != 0:
                 raise RuntimeError("chmod error")
-            cmd = "sh configure"    # we use "sh" here so that it'll work on mingw32 with standard python.org binaries
+            host = os.environ.get("HOST_SYS")
+            cmd = "ac_cv_func_malloc_0_nonnull=yes sh configure --host " + host   # we use "sh" here so that it'll work on mingw32 with standard python.org binaries
             if self.verbose < 1:
                 cmd += " -q"
             if os.system(cmd) != 0:
@@ -370,7 +371,7 @@ kw = {'name':"pycrypto",
       'ext_modules': plat_ext + [
             # _fastmath (uses GNU mp library)
             Extension("Crypto.PublicKey._fastmath",
-                      include_dirs=['src/','/usr/include/'],
+                      include_dirs=['src/'],
                       libraries=['gmp'],
                       sources=["src/_fastmath.c"]),