Re: [gentoo-dev] Suggestion for apache in /etc/make.profile/use.defaults

[Christian Skarby]

<url: http://www.gentoo.org/doc/gentoo-howto.html > is a great start for
reading more about ebuild-writing, and in your /usr/portage there is two
skel.-files one for ebuilds and one for ChangeLogs.

Allow me to snip some quotes in order to clearify DEPEND, RDEPEND and
USE-flags

<snip>
The purpose of USE variables is to allow you to configure Portage to globally
and automatically enable or disable certain optional build-time
features.
</snip>

<snip>
The DEPEND variable inside your foo-x.y.z.ebuild tells Portage
about which packages are needed to build foo. The RDEPEND variable
specifies which packages are needed for foo to run.
</snip>

So, anything set with DEPEND (in the ebuild) tells portage that it is
NEEDED in order to build the "package." USE-flags are used (as far as I
understand, please correct me if I am wrong,) to enable or disable
(typically with a configure-script) diferent features for the package. For
an example please see "Code listing 4" in "Gentoo Linux Developers HOWTO"
url on the top of this email.


All the best,
Christian

> On Thu, 15 Aug 2002 12:34:40 +0200
> Paul de Vrieze <pauldv@××××××.nl> wrote:
>
>> On Thursday 15 August 2002 10:30, Henti Smith wrote:
>> > Hi there :)
>> >
>> > I've been working on getting a few apps I use onto ebuilds to
>> incorporate into gentoo, but some of them require apache to me
>> installed which is not a problem as I just add apache into the
>> requirements list.
>> >
>> > Some of the other packages has a apache/CGI interface .. but it's
>> not required and is a compile option. how big is the change to add
>> apache into /etc/make.profile/use.defaults and what effect will it
>> have on the overall system ?
>> >
>> > Please understand I'm new to gentoo and still learning the system
>> and this might be a silly question
>> >
>>
>> Why should apache be in the defaults, it is a server so I think it
>> shouldn't  be installed by default at all. A use option is something
>> different of  course.
>
> Hi paul ..
>
> and everybody else ..
>
> I Have read a lot more on the USE function and I think I understand
> better how things work. Just trying to figure out how the USE function
> effects the ebuild compile structure ..
>
> for instance.
>
> If I have apache as a DEPEND in my ebuild, but as a apache? (>=apache ),
> and I assume from my reading that it means it's optional not required,
> and  I do 'USE="-apache" emerge .ebuild' how can I specify that some
> ./configure option like "--with-CGI" doesn't get used at compile time ?
>
> Or am I understanding ebuild and USE incorreclty ?
>
> Henti Smith
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