[Build-common-hackers] Running scons twice with cdbs

[Adrian Knoth]

[Note: Jonas asked me to resent this question to the list. I'm not
subscribed, so if need be, keep me in the loop]

Hi!

There were some bugreports against ffado yesterday. One of them is
caused by FFADO being compiled with debugging enabled.

   http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=601657

Given that normally nobody needs this, I'd like to revert to DEBUG=0 as
an scons argument.

On the other hand, debugging output (it's #ifdef'ed printfs, not
debugging symbols, asserts and so on) is useful if things don't work.

How about building the lib twice, one time with DEBUG=0 and a second
time with DEBUG=1?

Problem is that both commands result in the same libffado.so.x.y file,
so we cannot install them both to /usr/lib/. But I feel it's ok to place
the DEBUG=0 version in /usr/lib/ and the DEBUG=1 lib somewhere else.

If someone wants to see debug output, he then uses LD_LIBRARY_PATH to
point to this special location. If need be, I could provide a helper
script, e.g. ffado-debug, that's used to prefix the normal startup
commands, i.e. /usr/bin/ffado-debug /usr/bin/jackd -d firewire...

Question is: does cdbs support such an approach? Perfect solution would
be to have both libs in the same package (libffado2), but if need be, I
could live with libffado-dbg (I guess that's what cdbs clearly supports,
given that we build ardour-i686 and ardour from the same source).


Right now, I've implemented it this way:

   http://git.debian.org/?p=pkg-multimedia/ffado.git;a=commitdiff;h=60e0d1546a1042042a46bdd320ab5a0e57c998c0

I wonder if this is something common that cdbs wants to address.



Cheers

-- 
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