Re: [nping] WINAPI becoming undefined

[David Fifield <david () bamsoftware com>]

On Tue, Apr 05, 2011 at 10:20:03PM +0200, Gisle Vanem wrote:
> I'm struggling with building nping using MingW. All programs in the
> nmap package builds fine except for nping. Somewhere in the headers the 
> 'WINAPI' definition becomes undefined! So nping's use of ShellExecute()  
> becomes unlinkable (the __attribute__((__stdcall__)) gets lost). I need 
> help finding out where.
>
> My theory is that there could be a local header in nmap that shadows for
> one of the system headers. Is there a tool to detect that? But I'm not 
> sure since the dependencies (generated using gcc -MM $(CFLAGS)) for 
> winfix.cc seems correct.
>
> Running "gcc -E -v $(CFLAGS) winfix.cc" gives me this. First the search list output:
>
> #include "..." search starts here:
> #include <...> search starts here:
> .
> ..
> ../nbase
> ../nsock/include
> ../mswin32
> ../libpcre
> ../libdnet-stripped/include
> ../liblua
> g:/MingW32/src/zlib-1.2.3
> g:/MingW32/src/inet/libpcap
> g:/MingW32/src/inet/libpcap/WinPcap/Include
> g:/MingW32/src/inet/OpenSSL-1.1.0/outinc
> g:/MingW32/include
> g:\mingw32\bin\../lib/gcc/mingw32/4.5.0/include/c++
> g:\mingw32\bin\../lib/gcc/mingw32/4.5.0/include/c++/mingw32
> g:\mingw32\bin\../lib/gcc/mingw32/4.5.0/include/c++/backward
> g:\mingw32\bin\../lib/gcc/mingw32/4.5.0/include
> g:\mingw32\bin\../lib/gcc/mingw32/4.5.0/include-fixed
> End of search list.
>
> Seems okay to me; it reflects my CFLAGS (except the "g:\mingw32\bin\.."
> part off-course). But the preprocessed output contains this:
>
>  # 290 "g:/MingW32/include/shellapi.h" 2 3
>  ...
>  HINSTANCE ShellExecuteA(HWND,LPCSTR,LPCSTR,LPCSTR,LPCSTR,INT);
>
> I.e. the WINAPI decoration gets dropped! 

This is getting outside of my offhand Windows header knowledge. Could
you perhaps trace the problem backwards with

#ifndef WINAPI
#error WINAPI undefined
#endif

David Fifield
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