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List: boost-build
Subject: [Boost-build] Quick Q regarding feature propagation syntax
From: Kostas Kostiadis <kos () climaxgroup ! com>
Date: 2007-01-25 15:23:05
Message-ID: 495A161B83F7544AA943600A98833B530B75E170 () mimas
[Download RAW message or body]
Hello all,
Say I have a lib physics, that uses a lib math.
Also, say that the math lib has a "feature" <use_doubles_instead_of_floats>
with possible values no/yes, defaulting to no.
In my main project jamfile, I can do something like:
use-project /physics : /some/path/physics ;
exe foo
:
main.cpp
/physics/<use_doubles_instead_of_floats>yes
:
;
NOTE: The use_doubles_instead_of_floats feature is a feature in the math lib
NOT the physics lib.
How can I propagate this feature to the math lib?
Should I be using the math lib directly into the main project's jamfile?
i.e.
use-project /physics : /some/path/physics ;
use-project /math : /some/path/math ;
exe foo
:
main.cpp
/physics
/math/<use_doubles_instead_of_floats>yes
:
;
I don't really need to do this, because physics "uses" maths anyway.
Also, what is the syntax if I have multiple features for a given lib? Can I
do:
exe foo
:
main.cpp
/someLib/<feature1>on/<feature2>off/<someOtherFeature>yes
:
;
Your help much appreciated.
cheers,
K.
[Attachment #3 (text/html)]
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<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=us-ascii">
<META content="MSHTML 6.00.5730.11" name=GENERATOR></HEAD>
<BODY>
<DIV><SPAN class=623301215-25012007><FONT face=Arial color=#800000 size=2>Hello
all,</FONT></SPAN></DIV>
<DIV><SPAN class=623301215-25012007><FONT face=Arial color=#800000
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=623301215-25012007><FONT face=Arial color=#800000 size=2>Say I
have a lib physics, that uses a lib math.</FONT></SPAN></DIV>
<DIV><SPAN class=623301215-25012007><FONT face=Arial color=#800000 size=2>Also,
say that the math lib has a "feature" <use_doubles_instead_of_floats> with
possible values no/yes, defaulting to no.</FONT></SPAN></DIV>
<DIV><SPAN class=623301215-25012007><FONT face=Arial color=#800000
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=623301215-25012007><FONT face=Arial color=#800000 size=2>In my
main project jamfile, I can do something like:</FONT></SPAN></DIV>
<DIV><SPAN class=623301215-25012007><FONT face=Arial color=#800000
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=623301215-25012007><FONT face=Arial color=#800000
size=2>use-project /physics : /some/path/physics ;</FONT></SPAN></DIV>
<DIV><SPAN class=623301215-25012007><FONT face=Arial color=#800000
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=623301215-25012007><FONT face=Arial color=#800000 size=2>exe
foo</FONT></SPAN></DIV>
<DIV><SPAN class=623301215-25012007> <FONT face=Arial
color=#800000 size=2>:</FONT></SPAN></DIV>
<DIV><SPAN class=623301215-25012007>
<FONT face=Arial color=#800000 size=2>main.cpp</FONT></SPAN></DIV>
<DIV><SPAN class=623301215-25012007>
<FONT face=Arial color=#800000
size=2>/physics/<use_doubles_instead_of_floats>yes</FONT></SPAN></DIV>
<DIV><SPAN class=623301215-25012007> <FONT face=Arial
color=#800000 size=2>:</FONT></SPAN></DIV>
<DIV><SPAN class=623301215-25012007> <FONT face=Arial
color=#800000 size=2>;</FONT></SPAN></DIV>
<DIV><SPAN class=623301215-25012007><FONT face=Arial color=#800000
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=623301215-25012007><FONT face=Arial color=#800000
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=623301215-25012007><FONT face=Arial color=#800000 size=2>NOTE:
The use_doubles_instead_of_floats feature is a feature in the math lib NOT the
physics lib.</FONT></SPAN></DIV>
<DIV><SPAN class=623301215-25012007><FONT face=Arial color=#800000
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=623301215-25012007><FONT face=Arial color=#800000 size=2>How
can I propagate this feature to the math lib?</FONT></SPAN></DIV>
<DIV><SPAN class=623301215-25012007><FONT face=Arial color=#800000 size=2>Should
I be using the math lib directly into the main project's jamfile?
i.e.</FONT></SPAN></DIV>
<DIV><SPAN class=623301215-25012007><FONT face=Arial color=#800000
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=623301215-25012007>
<DIV><SPAN class=623301215-25012007><FONT face=Arial color=#800000
size=2>use-project /physics : /some/path/physics ;</FONT></SPAN></DIV>
<DIV><SPAN class=623301215-25012007><FONT face=Arial color=#800000 size=2>
<DIV><SPAN class=623301215-25012007><FONT face=Arial color=#800000
size=2>use-project /math : /some/path/math ;</FONT></SPAN></DIV>
<DIV><SPAN class=623301215-25012007></SPAN> </DIV></FONT></SPAN></DIV>
<DIV><SPAN class=623301215-25012007><FONT face=Arial color=#800000 size=2>exe
foo</FONT></SPAN></DIV>
<DIV><SPAN class=623301215-25012007> <FONT face=Arial
color=#800000 size=2>:</FONT></SPAN></DIV>
<DIV><SPAN class=623301215-25012007>
<FONT face=Arial color=#800000 size=2>main.cpp</FONT></SPAN></DIV>
<DIV><SPAN class=623301215-25012007>
<FONT face=Arial color=#800000 size=2>/physics</FONT></SPAN></DIV>
<DIV><SPAN class=623301215-25012007>
<FONT face=Arial color=#800000
size=2>/math/<use_doubles_instead_of_floats>yes</FONT></SPAN></DIV>
<DIV><SPAN class=623301215-25012007> <FONT face=Arial
color=#800000 size=2>:</FONT></SPAN></DIV>
<DIV><SPAN class=623301215-25012007> <FONT face=Arial
color=#800000 size=2>;</FONT></SPAN></DIV>
<DIV><SPAN class=623301215-25012007><FONT face=Arial color=#800000
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=623301215-25012007><FONT face=Arial color=#800000 size=2>I
don't really need to do this, because physics "uses" maths
anyway.</FONT></SPAN></DIV>
<DIV><SPAN class=623301215-25012007><FONT face=Arial color=#800000
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=623301215-25012007><FONT face=Arial color=#800000 size=2>Also,
what is the syntax if I have multiple features for a given lib? Can I
do:</FONT></SPAN></DIV>
<DIV><SPAN class=623301215-25012007><FONT face=Arial color=#800000
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=623301215-25012007><FONT face=Arial color=#800000 size=2>exe
foo</FONT></SPAN></DIV>
<DIV><SPAN class=623301215-25012007> <FONT face=Arial
color=#800000 size=2>:</FONT></SPAN></DIV>
<DIV><SPAN class=623301215-25012007>
<FONT face=Arial color=#800000 size=2>main.cpp</FONT></SPAN></DIV>
<DIV><SPAN class=623301215-25012007>
<FONT face=Arial color=#800000
size=2>/someLib/<feature1>on/<feature2>off/<someOtherFeature>yes</FONT></SPAN></DIV>
<DIV><SPAN class=623301215-25012007> <FONT face=Arial
color=#800000 size=2>:</FONT></SPAN></DIV>
<DIV><SPAN class=623301215-25012007> <FONT face=Arial
color=#800000 size=2>;</FONT></SPAN></DIV>
<DIV><SPAN class=623301215-25012007><FONT face=Arial color=#800000
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=623301215-25012007><FONT face=Arial color=#800000
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=623301215-25012007><FONT face=Arial color=#800000 size=2>Your
help much appreciated.</FONT></SPAN></DIV>
<DIV><SPAN class=623301215-25012007><FONT face=Arial color=#800000
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=623301215-25012007><FONT face=Arial color=#800000
size=2>cheers,</FONT></SPAN></DIV>
<DIV><SPAN class=623301215-25012007><FONT face=Arial color=#800000
size=2>K.</FONT></SPAN></DIV>
<DIV><SPAN class=623301215-25012007><FONT face=Arial color=#800000
size=2></FONT></SPAN> </DIV></SPAN></DIV></BODY></HTML>
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