Re: [gentoo-dev] per-package environment variables.

[aye <aye@gentoo.pl>]

well - i've got one more idea. all your proposal have one weakness from
my point of view. i've reported bug (and reopened the second one) for
one reason: i want to have some base system compiled in way, which makes
me possibility to run on diffrent procesors (mainly i'm interested in
pentiums and athlons), while the rest of programs should be compiled
with optimalization for my home cpu.
in your solutions i'd have to had a long file looks like it:

category/package1 low_c_flags*
category/package2 low_c_flags
category/package3 low_c_flags
category/package4 low_c_flags
category/package5 low_c_flags
[...]
category/package100 low_c_flags

*low_c_flags is just example - no matter how it'd be called, if it would
be file name or settings or some kind of keyword - it looks ugly. in the
other hand i don't think that anyboby would need more then 3 or 4 sets
of flag. so what i propose is to have a /etc/portage/package.env with
syntax as below:

CFLAGS="-option1 -option2 -option3"
PACKAGES="category/package1
category/package2
category/package3
category/package4
[...]
category/packageN"

CFLAGS="-option1 -option4 -option4"
PACKAGES="category/packageN+1
category/packageN+2
category/packageN+3
category/packageN+4
[...]
category/packageN+M"

LINGUAS="pl"
PACKAGES="category/package3
category/package5"

and so on. 
there is one disadvantage in this idea. it's pretty certain, that man
want to have diffrent CFLAGS and CXXFLAGS for the same package. in
contruction as above, he'd have to copy packages and have the same
package in 2 places, so i think, we could set these flags together, for
example:

CFLAGS="..."
CXXFLAGS="..."
PACKAGES="..."

CFLAGS="..."
PACKAGES="..." <no CXXFLAGS definition here -> CXXFLAGS are taken from make.conf

now one can say: "hey - why the hell CFLAGS and CXXFLAGS are treated in
diffrent way than the rest?". ok. so let's make:

CFLAGS="..."
CXXFLAGS="..."
MAKEOPTS="..."
PACKAGES="..."

CFLAGS="..."
PACKAGES="..." < again - not declared setting are taken from enviroment here

isn't that clear anought? let's make /etc/portage/package.env a
directory.

ls /etc/portage/package.env
set1.env
set2.env
set3.env

cat /etc/portage/package.env/set1.env
# definitions for base-system
CFLAGS="..."
CXXFLAGS="..."
MAKEOPTS="..."
PACKAGES="..."

cat /etc/portage/package.env/set2.env
# definitions for kde
CFLAGS="..."
LINGUAS="..."
PACKAGES="..."

and so on...
what do you think of that?

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