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Date: Tue, 14 May 2013 09:37:43 +0200
From: Stefan Hajnoczi <stefanha@gmail.com>
Message-ID: <20130514073743.GA3632@stefanha-thinkpad.redhat.com>
References: <20130513204627.25790.62828.malonedeb@chaenomeles.canonical.com>
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Subject: Re: [Qemu-devel] [Bug 1179664] [NEW] migration.c:293: undefined
 reference to	`__sync_val_compare_and_swap_4'
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To: Bug 1179664 <1179664@bugs.launchpad.net>
Cc: qemu-devel@nongnu.org

On Mon, May 13, 2013 at 08:46:27PM -0000, therock247uk wrote:
> Public bug reported:
> 
> latest git qemu error i get on compiling with mingw
> 
>   LINK  i386-softmmu/qemu-system-i386w.exe
> ../migration.o: In function `migrate_finish_set_state':
> C:\MinGW\msys\1.0\home\therock247uk\qemu/migration.c:293: undefined reference to
>  `__sync_val_compare_and_swap_4'
> C:\MinGW\msys\1.0\home\therock247uk\qemu/migration.c:293: undefined reference to
>  `__sync_val_compare_and_swap_4'
> C:\MinGW\msys\1.0\home\therock247uk\qemu/migration.c:293: undefined reference to
>  `__sync_val_compare_and_swap_4'
> collect2.exe: error: ld returned 1 exit status
> make[1]: *** [qemu-system-i386w.exe] Error 1
> make: *** [subdir-i386-softmmu] Error 2

Please post your gcc version:

  $ gcc --version