> On 30 Jul 2015, at 16:13, Luke Dunstan <[email protected]> wrote:
>
>
> On the normal Trusty cubieboard2 image I can install minios-xen fine, but on
> Vivid I get an error:
>
> $ opam install minios-xen
>
> [ERROR] The compilation of minios-xen failed at "make debug=n".
> ...
> ### stderr ###
> # dtc/libfdt/fdt_ro.c:453:6: error: ‘nodedepth’ may be used uninitialized in
> this function [-Werror=maybe-uninitialized]
> # [...]
> # /home/mirage/.opam/4.02.1/build/minios-xen.0.7/include/libfdt.h: In
> function ‘fdt_parent_offset’:
> # dtc/libfdt/fdt_ro.c:468:9: error: ‘nodedepth’ may be used uninitialized in
> this function [-Werror=maybe-uninitialized]
> # return fdt_supernode_atdepth_offset(fdt, nodeoffset,
> # ^
> # dtc/libfdt/fdt_ro.c:453:6: note: ‘nodedepth’ was declared here
> # int nodedepth;
> # ^
> # cc1: all warnings being treated as errors
> # make: ***
> [/home/mirage/.opam/4.02.1/build/minios-xen.0.7/dtc/libfdt/fdt_ro.o] Error 1
>
> mirage-xen-minios.0.7.0 was OK because of:
>
> https://github.com/talex5/xen/commit/804d40b4fe00d68e1be3160f8bcc0d94f3d4edf0
> <https://github.com/talex5/xen/commit/804d40b4fe00d68e1be3160f8bcc0d94f3d4edf0>
>
> I'm guessing that the difference in this image is that it has GCC-4.9.2
> instead of 4.8.x, but I'm not certain.
Could we turn off -Werror for the OPAM builds, Thomas? It's only really useful
on Travis or other CI builds to spot regressions, but quite a blocker when
using a varied build toolchain.
-anil
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