Re: [Qemu-devel] [PULL 00/28] ppc-for-2.6 queue 20160125

[Peter Maydell]

On 25 January 2016 at 14:00, David Gibson <address@hidden> wrote:
> On Mon, Jan 25, 2016 at 11:59:22AM +0000, Peter Maydell wrote:
>> On 25 January 2016 at 11:19, David Gibson <address@hidden> wrote:
>> > I think I've fixed it, but it's a bit hard to tell since for me
>> > origin/master also fails to compile on 32-bit :(.
>>
>> Oops -- what's the failure there?
>>
>> (I do know of a vixl compile failure with older gcc you might be running
>> into; if that's it try configuring with --cxx=none. I should send a patch
>> to fix that.)
>
> Doesn't look like it.  Might be something to do with a specific glib
> version though:
>
> $ make -k
>   CC    qga/commands-posix.o
> qga/commands-posix.c: In function ‘qmp_guest_file_write’:
> qga/commands-posix.c:529:39: error: passing argument 3 of ‘qbase64_decode’ 
> from incompatible pointer type [-Werror=incompatible-pointer-types]
>      buf = qbase64_decode(buf_b64, -1, &buf_len, errp);
>                                        ^
> In file included from qga/commands-posix.c:32:0:
> /home/dwg/src/qemu/include/qemu/base64.h:52:10: note: expected ‘size_t * {aka 
> unsigned int *}’ but argument is of type ‘gsize * {aka long unsigned int *}’
>  uint8_t *qbase64_decode(const char *input,
>           ^
> cc1: all warnings being treated as errors
> /home/dwg/src/qemu/rules.mak:57: recipe for target 'qga/commands-posix.o' 
> failed
> make: *** [qga/commands-posix.o] Error 1
>   CC    util/base64.o

Ah, that's your compile environment being wrong -- you're trying to
build QEMU 32-bit but using the 64-bit glib headers.

Daniel sent a patch which diagnoses this at the configure stage
  http://patchwork.ozlabs.org/patch/544254/
but it looks like it didn't get applied...

Try setting PKG_CONFIG_LIBDIR and perhaps other things.

thanks
-- PMM