Re: [gentoo-user] Re: Firefox and clang

[Marco Rebhan <me@dblsaiko.net>]

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On Friday, 1 November 2024 17:41:25 CET Michael wrote:
> Without USE="clang" the emerge takes 12-18% longer, but I am not sure what
> is the recommended compiler for FF or why it was changed.

Hi Michael,

https://bugs.gentoo.org/941878 seems to be the relevant bug with discussion on 
why it was changed.

> PS. Also I do not understand the meaning of these notations:
> 
> IUSE="foo"

Everything outside the quotes is normal bash syntax, the variable contents are 
interpreted by Portage.

This sets the ebuild to have USE flags "foo". (If IUSE was set before this 
line, it will clear out all the USE flags that were defined before.)

> IUSE="+foo"

This sets the ebuild to have USE flags "foo", the preceding "+" on the USE 
flag means it is enabled by default.

> IUSE+="foo"

This appends to the previous IUSE value. Equivalent to IUSE="${IUSE}foo" (note 
the missing space, hence why the Firefox ebuild uses IUSE+=" foo" instead).

Cheers,
Marco

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