Re: [Mingw-msys] Is there a MinGW winapi macro defined?

[Greg C. <chi...@co...>]

On 2005-9-29 14:24 UTC, Keith MARSHALL wrote:
> Angus Leeming asked:
> 
>>Is there some macro that I can use to identify the winapi headers
>>as comming from MinGW rather from Microsoft? grep doesn't turn up
>>anything but of course that just means I don't know what to search
>>for :)
>>
>>I ask because differences in the two sets of headers will need work
>>arounds in user code.
> 
> Presumably by `macro', you mean an autoconf macro?

If, OTOH, "macro" means a C preprocessor macro, then I think
  __W32API_VERSION
might be the best choice. It even allows you to distinguish different
w32api releases. I think it also works for cygwin, and maybe some
other platforms too; if platform must further be distinguished, test
  __MINGW32__
  __CYGWIN__
and so on.

>>grep doesn't turn up
>>anything but of course that just means I don't know what to search
>>for :)

To find out what macros are always predefined:

  touch eraseme.h; /MinGW/bin/cpp -dM eraseme.h

To find out what macros are defined when you include any mingw header:

  echo "#include <stdio.h>" > eraseme.h; /MinGW/bin/cpp -dM eraseme.h

It might be useful to replace <stdio.h> with <w32api.h> in that last
command, for the present purpose.