Method GetDirectoryWithExecutable

src/app/ApplicationBase.cpp:230–251

XXXX mk: as of C++20, there is no portable solution (yet ?)

// XXXX mk: as of C++20, there is no portable solution (yet ?)
std::filesystem::path donut::app::GetDirectoryWithExecutable()
{
	
    char path[PATH_MAX] = {0};
#ifdef _WIN32
    if (GetModuleFileNameA(nullptr, path, dim(path)) == 0)
        return "";
#else // _WIN32
	// /proc/self/exe is mostly linux-only, but can't hurt to try it elsewhere
	if (readlink("/proc/self/exe", path, std::size(path)) <= 0)
	{
		// portable but assumes executable dir == cwd
		if (!getcwd(path, std::size(path)))
			return ""; // failure
	}
#endif // _WIN32

    std::filesystem::path result = path;
    result = result.parent_path();

    return result;
}

nvrhi::GraphicsAPI donut::app::GetGraphicsAPIFromCommandLine(int argc, const char* const* argv)
{