[gentoo-user] portage and package specific CFLAGS

I thought perhaps

CFLAGS="whatever" CXXFLAGS="${CFLAGS}" emerge foo

no doubt some dev guru will tell me I am way out of line


On Wed, 30 Mar 2005 23:14:48 +0200
Antonio Coralles wrote:

> How can I tell portage to use specific CFLAGS for a particular package
> without temporary changing my /etc/make.conf ?
>
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Nick Rout

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Nick Rout wrote:
> I thought perhaps
>
> CFLAGS="whatever" CXXFLAGS="${CFLAGS}" emerge foo
>
> no doubt some dev guru will tell me I am way out of line

wrong! there's nothing wrong with doing that. If it was something like
ACCEPT_KEYWORDS you were setting, that'd be different

One thing to note though, is that your reasoning is flawed when setting
CXXFLAGS to $CFLAGS. CFLAGS wont be equal to "whatever" until after you hit
enter, so unless CFLAGS is already set in your env, CXXFLAGS will be null. If
it is set in your env, CXXFLAGS will be whatever CFLAGS is in your env, not
"whatever".

Cheers
- --
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Aaron Walker <ka0ttic.RemoveThis@gentoo.org>
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gentoo-user.TakeThisOut@gentoo.org wrote:

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>
> Nick Rout wrote:
>> I thought perhaps
>>
>> CFLAGS="whatever" CXXFLAGS="${CFLAGS}" emerge foo
>>
>> no doubt some dev guru will tell me I am way out of line
>
> wrong! there's nothing wrong with doing that. If it was something like
> ACCEPT_KEYWORDS you were setting, that'd be different
>
> One thing to note though, is that your reasoning is flawed when setting
> CXXFLAGS to $CFLAGS. CFLAGS wont be equal to "whatever" until after
> you hit
> enter, so unless CFLAGS is already set in your env, CXXFLAGS will be
> null. If
> it is set in your env, CXXFLAGS will be whatever CFLAGS is in your
> env, not
> "whatever".
>
So, the correct way would be (??):
#CFLAGS="whatever"
#CXXFLAGS=CFLAGS
#emerge something

> Cheers
> - --
> Zeere's nu secret tu belunce-a. Yuoo joost hefe-a tu feel zee vefes.
> Bork Bork Bork!
>
> -- Dervee Oodrede-a
>
antonio
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Juergen Fiedler wrote:
> If you really feel the need to cram it all onto one line, you could
> #CFLAGS="whatever" && CXXFLAGS=CFLAGS && emerge something

without the typo and even smaller:
# CFLAGS="whatever" && CXXFLAGS=$CFLAGS emerge something

SCNR
Christoph
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On Friday 01 April 2005 04:07, Ciaran McCreesh wrote:
> On Thu, 31 Mar 2005 20:46:31 +0200 Christoph Gysin <cgysin.DeleteThis@gmx.ch>
>
> wrote:
> | Juergen Fiedler wrote:
> | > If you really feel the need to cram it all onto one line, you could
> | > #CFLAGS="whatever" && CXXFLAGS=CFLAGS && emerge something
> |
> | without the typo and even smaller:
> | # CFLAGS="whatever" && CXXFLAGS=$CFLAGS emerge something
>
> CFLAGS="whatever" CXXFLAGS="$CFLAGS" emerge fnord
>
> No &&.

Conflicting advice...

On Thursday 31 March 2005 16:46, Aaron Walker wrote:
> One thing to note though, is that your reasoning is flawed when setting
> CXXFLAGS to $CFLAGS. CFLAGS wont be equal to "whatever" until after you
> hit enter, so unless CFLAGS is already set in your env, CXXFLAGS will be
> null. If it is set in your env, CXXFLAGS will be whatever CFLAGS is in
> your env, not "whatever".

/me checks which is correct.

$ CFLAGS="old"
$ CFLAGS="new" CXXFLAGS="$CFLAGS" echo $CFLAGS - $CXXFLAGS
old -

Woah... Ciaran is wrong! First time for everything, eh? *wink, nudge*

Regards,
Jason Stubbs
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