Add extension flag

typon/trans/main.py

@@ -21,6 +21,7 @@ def main():
     
     parser.add_argument("input", help="input file", nargs="?" if "--cpp-flags" in sys.argv else 1)
     parser.add_argument("-o", "--output", help="output file")
+    parser.add_argument("-e", "--extension", help="generate binding code to allow importing this from CPython", action="store_true")
     parser.add_argument("--cpp-flags", help="print cpp flags", action="store_true")
     parser.add_argument(
         '-d', '--debug',
@@ -53,6 +54,8 @@ def main():
             *["-I" + d for d in include_dirs],
             "-pthread", "-luring", "-lfmt", "-lssl", "-lcrypto", "-lpython3.10", "-std=c++20"
         ]
+        if args.extension:
+            cpp_flags.extend(("-DTYPON_EXTENSION", "-fPIC", "-shared"))
         print(" ".join(cpp_flags))
         exit(0)
     

typon/trans/test_runner.py

@@ -74,6 +74,7 @@ def run_test(path, quiet=True):
         code = f.read()
         execute = "# norun" not in code
         compile = "# nocompile" not in code
+        extension = "# extension" in code
         try:
             res = format_code(transpile(code, path.name, path))
         except: