Re: [MiNT] Binutils 2.18 + GCC 4.2.3

[Vincent Rivière <vincent.riviere@freesbee.fr>]

MiKRO wrote:
> - well known (at least to me) problem with "have strtof/strtold", I
> had to #undef these two flags in c++locale.cc

I finally found what was different between the native build and the 
cross build. On some targets, during the GCC bootstrap, the configure 
script of libstdc++-v3 does not know all the libraries required, so it 
is not able to do linker tests. Thus, on native builds, the linker tests 
are performed (in libstdc++-v3/configure.ac: if $GLIBCXX_IS_NATIVE ...), 
but on cross builds, some other tests are performed, or hardcoded values 
are used (in libstdc++-v3/configure.host).

Another thing is that _GNU_SOURCE must be defined in order to enable all 
the features of the MiNTLib and compile libstdc++-v3 successfully.

I changed 2 things:
- In the previous patch, the -D_GNU_SOURCE was only defined for cross 
compilation. It is now defined for native builds, too.
- Now, the native and cross tests produce (more or less) the same 
results in config.h

I made a new GCC patch, available at the usual place:
http://vincent.riviere.free.fr/soft/m68k-atari-mint/
It affects only C++.
Now the behavior should be the same with native and cross compilers.
This will have to be verified when someone tries to make a full native 
build.

So far, if I remember well, there is no more problem with GCC 4.2.3 ?

--
Vincent Rivière