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Date:	Tue, 26 Jun 2007 11:12:21 -0700
From:	Brian Dessent <brian AT dessent DOT net>
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To:	cygwin AT cygwin DOT com
Subject:	Re: undefined reference to `__imp___iob'
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"Frederich, Eric P21322" wrote:

> If it (mixing msys/mingw and cygwin libraries) is "not encouraged" or
> "not supported", then I just won't do it and I'll either start using
> Msys for everything or start keeping two copies of the Windows libraries
> around.

It's not supported, correct.  But using -mno-cygwin is exactly the same
as using MinGW/MSYS, which is why you're suddenly confusing us all by
what you're saying.

> gcc -O2 -I/mylibraries/libraries/include   -c someProgram.c -o
> win/someProgram.o
> gcc -O2 -I/mylibraries/libraries/include   -c autocad.c -o win/autocad.o
> gcc -O2 -I/mylibraries/libraries/include   -c diagrams.c -o
> win/diagrams.o
> gcc -O2 -I/mylibraries/libraries/include   -c dxf.c -o win/dxf.o
> gcc -O2 -I/mylibraries/libraries/include   -c graph.c -o win/graph.o
> gcc -O2 -I/mylibraries/libraries/include   -c heap.c -o win/heap.o
> gcc -O2 -I/mylibraries/libraries/include   -c sort.c -o win/sort.o
> gcc -O2 -I/mylibraries/libraries/include   -c swdconn.c -o win/swdconn.o
> gcc -O2 -I/mylibraries/libraries/include   -c util.c -o win/util.o

These objects are compiled without -mno-cygwin, so they are Cygwin
objects.

> /mylibraries/libraries/lib/libhdg_win.a(hdg_win.o):hdg_win.c:(.text+0x13
> ): undefined reference to `__imp___iob'

This library is a MinGW library, so this link is doomed to failure.

Brian

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