[RFC][PATCH][ld][testsuite] Add -ffat-lto-objects option to some ld tests

[Kyrill Tkachov]

On 26/11/13 14:58, H.J. Lu wrote:
> On Tue, Nov 26, 2013 at 6:55 AM, Kyrill Tkachov <kyrylo.tkachov@arm.com> wrote:
>> On 26/11/13 14:36, H.J. Lu wrote:
>>> On Tue, Nov 26, 2013 at 6:32 AM, Kyrill Tkachov <kyrylo.tkachov@arm.com>
>>> wrote:
>>>> Hi all,
>>>>
>>>> I'm seeing some ld testsuite failures on arm-none-linux-gnueabi and
>>>> aarch64-none-linux-gnu after a recent gcc commit (r205065) that set
>>>> -fno-fat-lto-objects as the default:
>>>>
>>>> PASS->FAIL: LTO 3 symbol
>>>> PASS->FAIL: PR ld/12758
>>>> PASS->FAIL: PR ld/12760
>>>> PASS->FAIL: PR ld/13183
>>>>
>>>> It seems that these tests need -ffat-lto-objects, at least on arm and
>>>> aarch64, but I'm not sure I understand the structure of these ld tests
>>>> well.
>>>>
>>>> Could someone please comment on whether this is the correct approach?
>>>> CC'ing H.J. since he wrote the lto.exp file.
>>>>
>>> Does -ffat-lto-objects always work when -flto is supported?
>>> If yes, OK for trunk.
>>
>> The gcc manual says about -ffat-lto-objects: " This option is effective only
>> when compiling with -flto and is ignored at link time".
>> I'd think that it's supposed to always work with -flto.
>>
> Was -ffat-lto-objects added together with -flto?
Hmmm... it seems not. -ffat-lto-objects exists in 4.7 but not in 4.6. -flto was 
added in 4.6.

Kyrill