cython_freeze for making stand-alone programs

1 files changed, 73 insertions, 0 deletions

diff --git a/bin/cython_freeze.py b/bin/cython_freeze.py
new file mode 100644
index 000000000..184c4a89e
--- /dev/null
+++ b/bin/cython_freeze.py
@@ -0,0 +1,73 @@
+#!/usr/bin/env python
+"""
+Create a C file for embedding one or more Cython source files.
+Requires Cython 0.11.2 (or perhaps newer).
+
+See README.rst for more details.
+"""
+
+import sys
+
+if len(sys.argv) < 2:
+    print >>sys.stderr, "USAGE: %s module [module ...]" % sys.argv[0]
+    sys.exit(1)
+
+def format_modname(name):
+    if name.endswith('.pyx'):
+        name = name[:-4]
+    return name.replace('.','_')
+
+modules = [format_modname(x) for x in sys.argv[1:]]
+
+print """
+#include <Python.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#if PY_MAJOR_VERSION < 3
+# define MODINIT(name)  init ## name
+#else
+# define MODINIT(name)  PyInit_ ## name
+#endif
+"""
+
+for name in modules:
+    print "PyMODINIT_FUNC MODINIT(%s) (void);" % name
+
+print """
+static struct _inittab inittab[] = {"""
+
+for name in modules:
+    print '    {"%(name)s", MODINIT(%(name)s)},' % {'name' : name}
+
+print """    {NULL, NULL}
+};
+
+extern int __pyx_module_is_main_%(main)s;
+
+#if PY_MAJOR_VERSION < 3 || (!defined(WIN32) && !defined(MS_WINDOWS))
+int main(int argc, char** argv) {
+#else
+int wmain(int argc, wchar_t **argv) {
+#endif
+    int r = 0;
+    PyObject *m = NULL;
+    if (PyImport_ExtendInittab(inittab)) {
+        fprintf(stderr, "No memory\\n");
+        exit(1);
+    }
+    Py_SetProgramName(argv[0]);
+    Py_Initialize();
+    PySys_SetArgv(argc, argv);
+    __pyx_module_is_main_%(main)s = 1;
+    m = PyImport_ImportModule(inittab[0].name);
+    if (!m) {
+        r = 1;
+        PyErr_Print(); /* This exits with the right code if SystemExit. */
+        if (Py_FlushLine()); PyErr_Clear();
+    }
+    Py_XDECREF(m);
+    Py_Finalize();
+    return r;
+}
+""" % {'main' : modules[0]}