+git-for-windows
Ævar Arnfjörð Bjarmason wrote:

> Using BLK_SHA1 in lieu of the OpenSSL routines was done in [1], but
> since DC_SHA1 is now the default for git in general it makes sense for
> Windows to use that too, this looks like something that was missed
> back in [2].
>
> As noted in [3] OpenSSL has a performance benefit compared to BLK_SHA1
> on MinGW, so perhaps that and the Windows default should be changed
> around again, but that's a topic for another series, it seems clear
> that this specific flag is nobody's explicit intention.

I have some memory of performance issues on Windows when DC_SHA1 was
introduced leading to interest in a mixed configuration with DC_SHA1
only being used where it is security sensitive (e.g. for object naming
but not for packfile trailers).

Did anything come of that?

In any event removing this BLK_SHA1 setting looks like a good change
to me, but I'd rather that Windows folks weigh in.

Thanks,
Jonathan

[...]
> --- a/config.mak.uname
> +++ b/config.mak.uname
> @@ -361,7 +361,6 @@ ifeq ($(uname_S),Windows)
>       NO_REGEX = YesPlease
>       NO_GETTEXT = YesPlease
>       NO_PYTHON = YesPlease
> -     BLK_SHA1 = YesPlease
>       ETAGS_TARGET = ETAGS
>       NO_INET_PTON = YesPlease
>       NO_INET_NTOP = YesPlease

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