Example of code

#if PLATFORM_WINDOWS
#include <windows.h>
#endif

#ifndef _MSC_VER
#include <dirent.h>
#include <unistd.h>
#else
#include <fileapi.h>
#include <stringapiset.h>

uint16_t *win_utf8to16(const char *value UNUSED)
{
#if PLATFORM_WINDOWS
	size_t len = strlen(value);
	int needed = MultiByteToWideChar(CP_UTF8, 0, value, len + 1, NULL, 0);
	if (needed <= 0)
	{
		error_exit("Failed to convert name '%s'.", value);
	}
	uint16_t *wide = malloc(needed * sizeof(uint16_t));
	if (MultiByteToWideChar(CP_UTF8, 0, value, len + 1, wide, needed) <= 0)
	{
		error_exit("Failed to convert name '%s'.", value);
	}
	return wide;
#else
	UNREACHABLE
#endif
}

bool dir_make(const char *path)
{
#if (_MSC_VER)
	return CreateDirectoryW(win_utf8to16(path), NULL);
#else
	return mkdir(path, 0755) == 0;
#endif
}

bool dir_make_recursive(char *path)
{
	size_t len = strlen(path);
	for (size_t i = len; i > 1; i--)
	{
		char c = path[i];
		if (c == '\\' || c == '/')
		{
			path[i] = '\0';
			dir_make_recursive(path);
			path[i] = c;
			break;
		}
	}
	return dir_make(path);
}

FILE *file_open_read(const char *path)
{
#if (_MSC_VER)
	return _wfopen(win_utf8to16(path), L"rb");
#else
	return fopen(path, "rb");
#endif
}

const char *find_lib_dir(void)
{
	char *lib_dir_env = getenv("C3C_LIB");
	if (lib_dir_env && strlen(lib_dir_env) > 0)
	{
		INFO_LOG("Using stdlib library from env 'C3C_LIB': %s.", lib_dir_env);
		if (!file_exists(lib_dir_env))
		{
			error_exit("Library path from 'C3C_LIB' environment variable: '%s', could not be resolved.", lib_dir_env);
		}
		return strdup(lib_dir_env);
	}
	char *path = find_executable_path();

	INFO_LOG("Detected executable path at %s", path);

	size_t strlen_path = strlen(path);
	// Remove any last path slash
	if (strlen_path > 1 && (path[strlen_path - 1] == '/' || path[strlen_path - 1] == '\\'))
	{
		path[strlen_path - 1] = '\0';
	}
	const char *lib_path = NULL;
	if ((lib_path = lib_find(path, "/../lib/c3/"))) goto DONE;
	if ((lib_path = lib_find(path, "/../lib/"))) goto DONE;
	if ((lib_path = lib_find(path, "/lib/c3/"))) goto DONE;
	if ((lib_path = lib_find(path, "/lib/"))) goto DONE;
	if ((lib_path = lib_find(path, "/c3/"))) goto DONE;
	if ((lib_path = lib_find(path, "/"))) goto DONE;
	if ((lib_path = lib_find(path, "/../c3/"))) goto DONE;
	if ((lib_path = lib_find(path, "/../"))) goto DONE;
	if ((lib_path = lib_find(path, "/../../lib/c3/"))) goto DONE;
	if ((lib_path = lib_find(path, "/../../lib/"))) goto DONE;

	INFO_LOG("Could not find the standard library /lib/std/");
DONE:;
	free(path);
	return lib_path;
}