[PATCH][gdb/testsuite] Compile index-cache.c with -Wl,--build-id

[Tom de Vries]

On 21-06-19 18:32, Pedro Alves wrote:
> On 6/21/19 4:54 PM, Tom de Vries wrote:
>> On 21-06-19 17:47, Pedro Alves wrote:
>>> On 6/21/19 4:27 PM, Tom de Vries wrote:
>>>> Hi,
>>>>
>>>> When building gdb using a combined gcc/binutils-gdb build and running
>>>> gdb.base/index-cache.exp we get:
>>>> ...
>>>> FAIL: gdb.base/index-cache.exp: test_cache_enabled_miss: at least one file was created
>>>> FAIL: gdb.base/index-cache.exp: test_cache_enabled_miss: couldn't get executable build id
>>>> FAIL: gdb.base/index-cache.exp: test_cache_enabled_hit: check index-cache stats
>>>> ...
>>>>
>>>> With "set debug index-cache on" we get:
>>>> ...
>>>> (gdb) file index-cache
>>>> Reading symbols from index-cache...
>>>> index cache: objfile index-cache has no build id
>>>> ...
>>>>
>>>> The problem is that the vanilla toolchain does not add a build-id, which is
>>>> required for the index-cache functionality.
>>>
>>> What is "vanilla" here?  A non-combined gcc/build-gdb build?
>>> Or is "combined gcc/build-gdb build" irrelevant here, and
>>> "vanilla" means "no-distro-patches build"?
>>
>> The latter.
> 
> OK.  Please tweak the commit log in that direction then.
> 
> The fix LGTM too.

Thanks for the review, I've updated the rationale.

I'll commit in a bit unless there are further comments.

Thanks,
- Tom