Re: Compiling libstdc++-v3 without the testsuite

[Paolo Carlini <pcarlini at suse dot de>]

Hi,

> Greetings,
>
> I am attempting to build a g++ cross-compiler without support for 
> exceptions. My problem is that the libstdc++-v3 testsuite uses the throw() 
> statement in about a million places and therefore refuses to compile. Is 
> there a ./configure time option which prevents compilation of the 
> testsuite? I cannot find one in the docs.
>  
If I understand correctly your problem, in principle you only need to pass
-fno-exceptions at build time, as part of the CXXFLAGS.

*But* I see that probably recently we are not testing sufficiently with 
that option
and you may need to fix locally a bit the code (we'll take care of those 
issues
ASAP): have a look to libstdc++-v3/libsupc++/exceptions_define.h, the idea
is that in principle we should never use naked throw, 
__throw_exception_again
instead. For me, 3.4.x works out of the box by just fixing a couple of 
naked throw
in testsuite_abi.cc.

I hope you will find this info useful, maybe others more expert than me 
in this
area can give you other suggestions.

Paolo.