Re: [Boost-users] [boost] [bjam] combinations of options

AMDG On 09/07/2016 07:00 PM, Lorenzo Caminiti wrote:

On Tue, Aug 30, 2016 at 8:26 AM, Steven Watanabe wrote:

...

<snip> Use an alias target with the default-build set to your combination. (This is how --build-type=complete at the root used to be implemented.)

I was not able to use alias here... let me show what I tried.

In my Jamfile I have a feature defined more or less like this:

feature.feature x : a b c : composite propagated link-incompatible ; feature.compose <x>a : <define>MACRO_A ; feature.compose <x>b : <define>MACRO_B ; feature.compose <x>c : <define>MACRO_C ;

So the following will build with feature x equal a, b, and then c:

$ bjam x=a,b,c

Now, I'd like to shortcut the above to just one target named "all_x":

$ bjam all_x

If I try to do that in the Jamfile using:

alias all_x : a b c ;

I get these errors:

error: Unable to find file or target named error: 'a'

The second argument should be a list of targets. a, b, and, c are not targets, they're the values of a feature.

If I try instead:

alias all_x : : <x>a <x>b <x>c ;

The third argument is the requirements. What you need to use is the fourth argument, default-build.

I also get errors:

error: explicitly-specified values of non-free feature <x> conflict error: existing values: a b c error: value from expanding <x>b : b

Can such an "all_x" target be defined using alias or some other BJam construct?

The correct way is: alias all_x : [list of targets to build] : : <x>a <x>b <x>c ; In Christ, Steven Watanabe