PATCH RFA: Build stages 2 and 3 with C++

[Toon Moene]

On 07/16/2011 08:52 AM, Ian Lance Taylor wrote:

> I would like to propose this patch as a step toward building gcc using a
> C++ compiler.  This patch builds stage1 with the C compiler as usual,
> and defaults to building stages 2 and 3 with a C++ compiler built during
> stage 1.

I just completed a run using the following language configure options:

	../gcc/configure \
		...
		--enable-build-with-cxx \
		--enable-languages=c,c++,fortran,ada \

on x86-64-unknown-linux-gnu.  As far as I can see it was successful:

http://gcc.gnu.org/ml/gcc-testresults/2011-07/msg01852.html

For extra fun, the 0:20 UTC run at home using:

	../gcc/configure \
		...
		--with-build-config=bootstrap-lto \

is going to use Ada as a language *of choice* instead of Fortran based 
on the value of $RANDOM in the bash shell :-)

language=fortran
if [ $RANDOM -lt 16384 ]
then
    language=ada
fi
....
	../gcc/configure \
		--prefix=/tmp/lto \
		--enable-languages=$language \
		--with-build-config=bootstrap-lto \

I'll see you tomorrow (evil cackle) :-)

All this is using:

$ gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/x86_64-linux-gnu/gcc/x86_64-linux-gnu/4.6.1/lto-wrapper
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Debian 4.6.1-1' 
--with-bugurl=file:///usr/share/doc/gcc-4.6/README.Bugs 
--enable-languages=c,c++,fortran,objc,obj-c++,go --prefix=/usr 
--program-suffix=-4.6 --enable-shared --enable-multiarch 
--with-multiarch-defaults=x86_64-linux-gnu --enable-linker-build-id 
--with-system-zlib --libexecdir=/usr/lib/x86_64-linux-gnu 
--without-included-gettext --enable-threads=posix 
--with-gxx-include-dir=/usr/include/c++/4.6 
--libdir=/usr/lib/x86_64-linux-gnu --enable-nls --enable-clocale=gnu 
--enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-plugin 
--enable-objc-gc --with-arch-32=i586 --with-tune=generic 
--enable-checking=release --build=x86_64-linux-gnu 
--host=x86_64-linux-gnu --target=x86_64-linux-gnu
Thread model: posix
gcc version 4.6.1 (Debian 4.6.1-1)

toon@super:~$ gnat -v
GNAT 4.6.1
...

-- 
Toon Moene - e-mail: toon@moene.org - phone: +31 346 214290
Saturnushof 14, 3738 XG  Maartensdijk, The Netherlands
At home: http://moene.org/~toon/; weather: http://moene.org/~hirlam/
Progress of GNU Fortran: http://gcc.gnu.org/wiki/GFortran#news