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Subject: Re: Can't link .res file (from windres) using i686-pc-mingw32-g++
To: cygwin AT cygwin DOT com
References: <CAK-n8j6Uq2c-a_Vz1nWq3aZSH6L8yzq5xh3ipOPUqJ+yjPAaNw AT mail DOT gmail DOT com>
From: Mark Geisert <mark AT maxrnd DOT com>
Message-ID: <56CE833C.2040200@maxrnd.com>
Date: Wed, 24 Feb 2016 20:29:48 -0800
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Jim Reisert AD1C wrote:
> I  have a 64-bit Cygwin environment.  I'm trying to compile a 32-bit
> (target) Windows program using i686-pc-mingw32-g++
>
> # i686-pc-mingw32-g++ -g -Wall -Iinclude -I../../library/include   -c
> -o NPOTAdlg.o NPOTAdlg.cpp
> # windres -Iinclude res/NPOTAdlg.rc -O coff -o res/NPOTAdlg.res
> # i686-pc-mingw32-g++ -s -mwindows -static-libgcc -static-libstdc++
> -lwininet  NPOTA.o NPOTAdlg.o res/NPOTAdlg.res ../../library/library.a
> /usr/i686-pc-mingw32/sys-root/mingw/lib/libwininet.a   -o NPOTA
>
> But I get this error on the link (last) step:
>
>    res/NPOTAdlg.res: file not recognized: File format not recognized
>
> This program is a clone of another program I wrote a couple of years
> ago (I wanted to re-use the Windows framework I had developed).
> However, at that time, I was using 32-bit Cygwin, not 64-bit Cygwin.
>
> Is there a work-around for this, other than re-creating a 32-bit
> Cygwin environment?

Just a guess: your 64-bit windres is generating a 64-bit .res file that the 
32-bit g++ can't grok.  Look at 'windres -h'.  There's a "-F" == "--target" flag 
that can specify a target type.  I would try adding "-F pe-i386" after the "-O 
coff" on your command.  If windres doesn't accept both -O and -F, try leaving 
off the "-O coff" and just specify the -F flag and value.  Good luck.

..mark

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