[Vm-dev] Debugging the VM under gdb on cygwin

Nicolas Cellier nicolas.cellier.aka.nice at gmail.com
Fri Jul 7 20:47:20 UTC 2017

Hi Eliot,
I've installed both a cygwin32 and cygwin64 for that reason...
Even if cross compilation works well, cross debugging does not.

2017-07-07 22:37 GMT+02:00 Eliot Miranda <eliot.miranda at gmail.com>:

> Hi All,
>     I'm finding it very difficult to debug the 32-bit VM on 64-bit Windows
> using cygwin.  The default gdb for 64-bit cygwin simply doesn't work
> properly, finding set facts in programs that work out side of the
> debugger.  I've tried to build a 32-bit gdb from the 7.11 sources,
> configuring with ./configure --target=i686-w64-mingw32, but the resulting
> gdb doesn't find the 32-bit dlls in C:\Windows\SysWOW64', and complains
> "Don't know how to run.".
> Does anyone else have a working gdb for 32-bit programs on 64-bit
> Windows?  How did you build it?
> Does anyone else have a working gdb for 32-bit programs on 32-bit
> Windows?  How did you build it?  Do I need to create a 32-bit cygwin
> installation on 32-bit windows for this to work?
> Does anyone have the cygwin gdb 7.8 sources or a pointer to them?  One
> poster claimed that 32-bit gdb on cygwin only works if compiled from the
> 7.8 sources.
> Any other ideas?
> AdvThanksance
> _,,,^..^,,,_
> best, Eliot
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