Re: [PATCH] INSTALL: minor typo fix

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On Wed, Jan 28, 2015 at 6:09 AM, Chris Packham <judge.packham@xxxxxxxxx> wrote:
> Hi Alexander
>
> On Wed, Jan 28, 2015 at 5:15 AM, Alexander Kuleshov
> <kuleshovmail@xxxxxxxxx> wrote:
>> Signed-off-by: Alexander Kuleshov <kuleshovmail@xxxxxxxxx>
>> ---
>>  INSTALL | 2 +-
>>  1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/INSTALL b/INSTALL
>> index ffb071e..6f1c3d5 100644
>> --- a/INSTALL
>> +++ b/INSTALL
>> @@ -53,7 +53,7 @@ or
>>
>>  As a caveat: a profile-optimized build takes a *lot* longer since the
>>  git tree must be built twice, and in order for the profiling
>> -measurements to work properly, ccache must be disabled and the test
>> +measurements to work properly, cache must be disabled and the test
>>  suite has to be run using only a single CPU.  In addition, the profile
>>  feedback build stage currently generates a lot of additional compiler
>>  warnings.
>> --
>
> That's not a typo ccache[1] is a compiler cache tool that can be used
> to speed up rebuilding object files. I don't know anything about the
> profile enabled builds but I imagine it has something to do with
> needing the 2nd build to produce difference object files from the

s/difference/different/

> first (with ccache enabled I imagine the 2nd build would result in
> identical output since on source files are changed between builds).
>
> --
> [1] - https://ccache.samba.org/

The commit that added that note f2d713fc[1] has a bit more of an
explanation of why profile enabled builds and ccache are incompatible.

[1] - https://github.com/git/git/commit/f2d713fc3e8e0b7be89584f04b421808aa99c403
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