On Fri, 21 Jun 2013 09:39:15 +0200, Luboš Doležel wrote:
Searching on the net, it appears the attribute should be supported
since gcc 3.4 though. But I found posts about it being supported
only
on certain targets
Riccardo
Hi,
my bad, it appears __attribute__((weak)) does what I wanted to
achieve.
Now the question is whether this works on Windows.
I wrote a simple test program and compiled it under Windows and from
disassembly I'd say it doesn't work as expected. Windows dynamic library
model doesn't support it.
To make methods using these block calls working on Windows, an
initializer like this one may be required:
__attribute__((constructor)) void initBlocks()
{
HMODULE hmod = GetModuleHandle(_T("libobjc2"));
_Block_copy = GetProcAddress(hmod, "_Block_copy");
}
with _Block_copy being a function pointer.
But it has the downside of using libobjc2 specifically. Any better
ideas?
--
Luboš Doležel
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