[ptxdist] How to add a compiler variable from another package?

[ptxdist] How to add a compiler variable from another package?

[Moritz Warning]

Hi,

I have a package that, when selected, should add a variable to a bunch 
of other packages.

Is this possible?

thanks,
mwarning

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Re: [ptxdist] How to add a compiler variable from another package?

[Michael Olbrich]

Hi,

On Thu, Aug 27, 2015 at 09:39:40AM +0200, Moritz Warning wrote:
> I have a package that, when selected, should add a variable to a
> bunch of other packages.
> 
> Is this possible?

What kind of variables? kconfig? make variables to influence the building
the package?
You can always access all PTXCONF_* variables in the makefiles. However,
using PTXCONF variables from another package breaks the dependency
handling, so what I do is something like this:

# this is the package that should trigger the change
config FOO
	tristate
	prompt "foo"
	...


config BAR
	tristate
	prompt "bar"

if BAR

config BAR_FOO
	bool
	default FOO


This way BAR_FOO has the same value as FOO and the package bar is rebuilt
when foo is enabled or disabled. Is that what you're looking for?

Michael

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