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List Info
Thread: Re: Executing shell command, save results to variable
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| Re: Executing shell command, save
results to variable |
 
United States |
2007-02-28 10:51:58 |
Diane,
Any chance of sharing your vision and some of your
enhancements with us? I would
love to see a back-tick capability for Jam.
Gary
Diane Holt wrote:
> I've done both. I pass back-ticked pkg-config commands
on my compile and
> link lines -- ie., I add them to the flags for each
(from a new rule,
> though, not an override on Cc/C++/Link -- although I do
have overrides
> for those rules, but for other reasons). And I also
modified Jam to be
> able to run a shell command from a rule (it bugged me
that there was
> something Make could do that Jam couldn't 
>
> In your case, Chris, if all you need is to pass that
wx-config in on the
> command line, adding it to the flags is the easiest way
to go.
>
> Diane
>
>
>
------------------------------------------------------------
------------
>
> _______________________________________________
> jamming mailing list - jamming perforce.com
> http://maillist.perforce.com/mailman/listinfo/jamming
_______________________________________________
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| Re: Executing shell command, save
results to variable |
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2007-02-28 11:19:20 |
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I didn't do it as a back-tick, but as a new built-in rule, which I call Command. It's used inside square brackets.
For example, this just captures the return code (note: the square brackets passed in the Command itself is the shell's 'test', not Jam's brackets):
RT_OK = [ Command "[ -e /lib/libc.so -o -e /usr/lib/libc.so ] ; echo $?" ] ;
if $(RT_OK) != 0 { Exit "Error: You must install the C runtime before building." ; }
(P.S. So you don't think I'm crazy, testing for something like that -- that's being run inside a chroot';d environment
This one captures the actual output:
local libname = [ Command "echo $(shared_lib) | sed -e 's:\(.*\)\.so\..*$:\1.so:9;" ] ;
If you're still interested, I can send the diff of
builtins.c.
Diane
On 2/28/07, Gary Gendel < garyicmanage.com">garyicmanage.com> wrote:
Diane,
Any chance of sharing your vision and some of your enhancements with us? I would
love to see a back-tick capability for Jam.
Gary
Diane Holt wrote:
>; I've done both. I pass back-ticked pkg-config commands on my compile and
> link lines -- ie., I add them to the flags for each (from a new rule,
> though, not an override on Cc/C++/Link -- although I do have overrides
> for those rules, but for other reasons). And I also modified Jam to be
> able to run a shell command from a rule (it bugged me that there was
> something Make could do that Jam couldn';t
>
> In your case, Chris, if all you need is to pass that wx-config in on the
> command line, adding it to the flags is the easiest way to go.
>
> Diane
>
>
> ------------------------------------------------------------------------
>;
> _______________________________________________
> jamming mailing list - jammingperforce.com">jammingperforce.com
> http://maillist.perforce.com/mailman/listinfo/jamming
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