Latest subversion sources of Indy 10 won't build in Delphi XE

Just grabbed the latest sources from subversion, for Indy 10, and I get this error:

[DCC Error] IdWinsock2.pas(2421): E2003 Undeclared identifier: 'SIZE_T'

The code at IdWinsock2.pas line 2421 is:

  {$EXTERNALSYM WSACMSGHDR}
  WSACMSGHDR = record
    cmsg_len: SIZE_T;  // error.
    cmsg_level: Integer;
    cmsg_type: Integer;
    { followed by UCHAR cmsg_data[] }
  end;

This seems a pretty basic failure. I sort of expected the Indy sources to build in the latest Delphi, out of the box. It must be something wrong on my end, but I don't know what.

It looks like the stable tagged sources indy10\Indy10\tags\Indy 10.5.7 works fine. It's just Trunk that's fried.

Update: To try to fix it, I added this:

type
  SIZE_T = Cardinal;

Then it dies later on in the same IdWinsock2.pas, at 6238:

function WSA_CMSGHDR_ALIGN(cons开发者_运维问答t Alength: SIZE_T): SIZE_T;

And it's external-sym defined at line 3218 differently:

  function WSA_CMSGHDR_ALIGN(const Alength: PtrUInt): PtrUInt;

My best guess is someone is in mid-hack on an attempt to make this work in a 64 bit FPC and hasn't noticed that they broke ability to compile it in shipping Delphi.

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SIZE_T support is currently in progress. New code got checked in before it was ready, but it should be fixed shortly.

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Warren, see How to fix 'undeclared identifier' error in Indy?

This addresses that exact question, and has some notes about the versions of Delphi used to compile.

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I would declare size_t in Delphi as Cardinal:

type
  size_t = Cardinal;