[debian-mysql] Bug#754623: percona-xtradb-cluster-galera-2.x: FTBFS on many archs

[Dejan Latinovic]

Hi,

The reason for this failure is a difference
in alignment of long long for MIPS ISA and IA32.
This results that size of gu_rse structure on mips is 24,
instead of expected 20 (on ia32).

As long long is first attribute in structure,
so it is safe to use pack(4).

> struct gu_rse
> {
>     long long   time;
>     const void* heap_ptr;
>     const void* stack_ptr;
>     long        pid;
> };


I assume that this fix could be used for other architectures like:
armel, armhf, powerpc, sparc.
I did not have a chance to test it on those architectures,
so my changes affects only mips and mipsel.



Solving this issue, fallowing error appears:

> gcs/src/gcs.c:1161: undefined reference to `__sync_fetch_and_add_8'


Mips platform does not have 64-bit __sync_* operations.
To avoid this behaviuor it is needed to use
corresponding __atomic_* from libatomic library.


Patch that solves both issues for mips/mipsel is attached.

Could you please consider including this patch?


Best Regards,
Dejan




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