Re: adding conditionally a c++ file implies static linking with g++

[Ralf Wildenhues]

Hi Vincent,

* Vincent Torri wrote on Fri, Nov 05, 2010 at 04:56:55PM CET:
> foo_SOURCES = bar1.c
>
> if MY_COND
> foo_SOURCES += bar2.cpp
> else
> foo_SOURCES += bar2.c
> endif
>
> One told me on that ML that it is normal that automake uses g++ for  
> linking, even if MY_COND is not verified. One possible way to work around 
> that is redefining rules of linking, according to the value of MY_COND.  
> Something like (maybe not 100% correct) :
>
> if MY_COND
> foo_la-bar2.lo: bar2.cpp
>         $(LTCXXCOMPILE) blah blah blah
> else
> foo_la-bar2.lo: bar2.c
>       $(LTCOMPILE) blah blah blah
> endif
>
> Is there something more elegant than doing that ?

Not really.  I agree that it's kind of ugly, but what's even more,
there are uses relying on something like this to happen: it was
actually recommended to do e.g.,

if COND_FALSE
nodist_foo_SOURCES += force-c++-linker.cc
endif

so I'm afraid you might have to live with a workaround.
You can set foo_LINK for linking.

Hope that helps.

Cheers,
Ralf