mingw-unicode.h

// This is for the MinGW compiler which does not support wmain.
// It is a wrapper for _tmain when _UNICODE is defined (wmain).
//
// !! Do not compile this file, but instead include it right before your _tmain function like:
// #include "mingw-unicode.h"
// int _tmain(int argc, _TCHAR *argv[]) {
//
// If you wish to have enpv in your main, then define the following before including this file:
// #define MAIN_USE_ENVP
//
// This wrapper adds ~300 bytes to the program and negligible overhead
//
// Taken from http://www.coderforlife.com/projects/utilities/mingw-unicode.c

#undef _tmain
#ifdef _UNICODE
#define _tmain wmain
#else
#define _tmain main
#endif

#if defined(__GNUC__) && defined(_UNICODE)

#ifndef __MSVCRT__
#error Unicode main function requires linking to MSVCRT
#endif

#include <wchar.h>
#include <stdlib.h>

extern int _CRT_glob;
extern
#ifdef __cplusplus
"C"
#endif
void __wgetmainargs(int*,wchar_t***,wchar_t***,int,int*);

#ifdef MAIN_USE_ENVP
int wmain(int argc, wchar_t *argv[], wchar_t *envp[]);
#else
int wmain(int argc, wchar_t *argv[]);
#endif

int main() {
	wchar_t **enpv, **argv;
	int argc, si = 0;
	__wgetmainargs(&argc, &argv, &enpv, _CRT_glob, &si); // this also creates the global variable __wargv
#ifdef MAIN_USE_ENVP
	return wmain(argc, argv, enpv);
#else
	return wmain(argc, argv);
#endif
}

#endif //defined(__GNUC__) && defined(_UNICODE)