Re: Cross-compilation artifact is broken

["Daniel P. Berrangé" <berrange@redhat.com>]

On Wed, Mar 12, 2025 at 03:52:45PM +0200, Konstantin Kostiuk wrote:
> Hi All,
> 
> I cross-compiled qemu-ga from current master branch
> (825b96dbcee23d134b691fc75618b59c5f53da32) and found strange behavior.
> 
> Configure CLI:
> ./configure --disable-docs --disable-system --disable-user
> --cross-prefix=x86_64-w64-mingw32- --enable-guest-agent
> --disable-guest-agent-msi --disable-qga-vss
> Build CLI:
> make -j8 qemu-ga
> 
> Linker wrote the following information but exited with 0 code:
> 
> /usr/lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../x86_64-w64-mingw32/bin/ld:
> qga/qemu-ga.exe:/4: section below image base
> /usr/lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../x86_64-w64-mingw32/bin/ld:
> qga/qemu-ga.exe:/24: section below image base
> 
> As a result, this binary failed to start on Windows without any details,
> just a message that the application is not compatible. I also tried to run
> it with wine and got the error:
> 
> wine: failed to start
> L"Z:\\home\\user\\Documents\\repos\\qemu\\build\\qga\\qemu-ga.exe"
> Application could not be started, or no application associated with the
> specified file.
> ShellExecuteEx failed: Bad EXE format for
> Z:\home\user\Documents\repos\qemu\build\qga\qemu-ga.exe.
> 
> I bisected the tree and found the commit that caused the problem:
> https://gitlab.com/qemu-project/qemu/-/commit/563b1a35ed1f1151505d4fe5f723827d1b3fd4bc
> 
> Adding --disable-split-debug to the configure CLI fixes the issue.
> 
> $ x86_64-w64-mingw32-gcc --version
> x86_64-w64-mingw32-gcc (GCC) 14.2.0
> 
> My question is, is this expected behavior or is this a bug?

Your configure args don't include "--enable-debug", so I would
not have expected -gsplit-dwarf to have been enabled, so I'm
surprised that commit casued a problem.


With regards,
Daniel
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