fix release build

Author: kewlbear

Sources/LinkPython/PythonSupport.m

@@ -32,6 +32,9 @@
 int PyRun_SimpleString(const char *);
 void Py_Finalize(void);
 
+void Py_IncRef(void *);
+void Py_DecRef(void *);
+
 int PythonInitialize(int argc, const char **argv, const char *custom_builtin_importer)
 {
     int ret = 0;
@@ -61,3 +64,5 @@ void PythonRunSimpleString(const char *string)
 {
     PyRun_SimpleString(string);
 }
+
+ForceLink(Python, Py_IncRef(nil); Py_DecRef(nil))

Sources/LinkPython/include/PythonSupport.h

@@ -24,6 +24,16 @@
 
 #import <Foundation/Foundation.h>
 
+#define ForceLink(package, body) \
+@interface ForceLink##package : NSObject \
+@end \
+\
+@implementation ForceLink##package \
+- (void)foo { \
+    body; \
+} \
+@end
+
 NS_ASSUME_NONNULL_BEGIN
 
 int PythonInitialize(int, const char **, const char *);