move native feature verification to setup.py

Author: cconlon

setup.py

@@ -33,6 +33,7 @@
 
 import wolfssl
 from wolfssl._build_wolfssl import build_wolfssl
+from wolfssl._build_wolfssl import wolfssl_inc_path, wolfssl_lib_path
 
 
 # long_description
@@ -43,6 +44,26 @@
     long_description = long_description.replace(".. include:: LICENSING.rst\n",
                                                 licensing_file.read())
 
+def verify_wolfssl_config():
+    # verify wolfSSL library has been configured correctly, so that cffi
+    # binding work correctly.
+
+    # open <wolfssl/options.h> header to parse for #define's
+    # This will throw a FileNotFoundError if not able to find options.h
+    optionsHeaderPath = wolfssl_inc_path() + "/wolfssl/options.h"
+    optionsHeader = open(optionsHeaderPath, 'r')
+    optionsHeaderStr = optionsHeader.read()
+    optionsHeader.close()
+
+    # require HAVE_SNI (--enable-sni) in native lib
+    if '#define HAVE_SNI' not in optionsHeaderStr:
+        raise RuntimeError("wolfSSL needs to be compiled with --enable-sni")
+
+    # require OPENSSL_EXTRA (--enable-opensslextra) in native lib
+    if '#define OPENSSL_EXTRA' not in optionsHeaderStr:
+        raise RuntimeError("wolfSSL needs to be compiled with "
+            "--enable-opensslextra")
+
 class cffiBuilder(build_ext, object):
 
     def build_extension(self, ext):
@@ -54,6 +75,8 @@ def build_extension(self, ext):
         if os.environ.get("USE_LOCAL_WOLFSSL") is None:
             build_wolfssl(wolfssl.__wolfssl_version__)
 
+        verify_wolfssl_config()
+
         super(cffiBuilder, self).build_extension(ext)
 
 setup(

src/wolfssl/_build_ffi.py

@@ -26,21 +26,6 @@
 from cffi import FFI
 from wolfssl._build_wolfssl import wolfssl_inc_path, wolfssl_lib_path
 
-# open <wolfssl/options.h> header to parse for #define's
-# This will throw a FileNotFoundError if not able to find options.h
-optionsHeaderPath = wolfssl_inc_path() + "/wolfssl/options.h"
-optionsHeader = open(optionsHeaderPath, 'r')
-optionsHeaderStr = optionsHeader.read()
-optionsHeader.close()
-
-# require HAVE_SNI (--enable-sni) in native lib
-if '#define HAVE_SNI' not in optionsHeaderStr:
-    raise SystemExit("wolfSSL needs to be compiled with --enable-sni")
-
-# require OPENSSL_EXTRA (--enable-opensslextra) in native lib
-if '#define OPENSSL_EXTRA' not in optionsHeaderStr:
-    raise SystemExit("wolfSSL needs to be compiled with --enable-opensslextra")
-
 ffi = FFI()
 
 ffi.set_source(

src/wolfssl/_build_wolfssl.py

@@ -41,7 +41,7 @@ def local_path(path):
 def wolfssl_inc_path():
     wolfssl_path = os.environ.get("USE_LOCAL_WOLFSSL")
     if wolfssl_path is None:
-        return local_path("lib/wolfssl")
+        return local_path("lib/wolfssl/src")
     else:
         if os.path.isdir(wolfssl_path) and os.path.exists(wolfssl_path):
             return wolfssl_path + "/include"