Re: Phase 1 of gcc-in-cxx now complete (Ada)

[Richard Guenther <richard dot guenther at gmail dot com>]

On Thu, Jun 25, 2009 at 11:50 PM, Laurent GUERBY<laurent@guerby.net> wrote:
> On Thu, 2009-06-25 at 13:32 -0700, Ian Lance Taylor wrote:
>> I am pleased to report that if you configure gcc with
>> --enable-build-with-cxx, which causes the core compiler to be built
>> using a C++ compiler, a bootstrap on x86_64-unknown-linux-gnu now
>> completes.
>>
>> I would like to encourage people to try using --enable-build-with-cxx in
>> other configuration--other bootstraps, cross-compilers--to see how well
>> it works. ?Please let me know if you run into problems that you don't
>> know how, or don't have time, to fix.
>
> Hi,
>
> Wanting to test Ada on the branch, after checkout I did on x86_64-linux:
>
> ../gcc/configure --enable-languages=c,c++,ada --enable-__cxa_atexit
> --disable-nls --enable-threads=posix --with-mpfr=/opt/cfarm/mpfr-2.4.1/
> --with-gmp=/opt/cfarm/gmp-4.2.4/ ?--prefix=/n/16/guerby/cxx/install
> --enable-build-with-cxx
>
> make bootstrap
> ...
> g++ -c ?-g -g -DIN_GCC ? -W -Wall -Wwrite-strings -Wcast-qual
> -Wmissing-format-attribute -fno-common ?-DHAVE_CONFIG_H -I. -I.
> -I../../gcc/gcc -I../../gcc/gcc/. -I../../gcc/gcc/../include
> -I../../gcc/gcc/../libcpp/include -I/opt/cfarm/gmp-4.2.4//include
> -I/opt/cfarm/mpfr-2.4.1//include -I../../gcc/gcc/../libdecnumber
> -I../../gcc/gcc/../libdecnumber/bid
> -I../libdecnumber ? ?../../gcc/gcc/c-decl.c -o c-decl.o
> /usr/include/libintl.h:40: error: expected unqualified-id before ‘const’
> /usr/include/libintl.h:40: error: expected `)' before ‘const’
> /usr/include/libintl.h:40: error: expected initializer before ‘const’
> /usr/include/libintl.h:81: error: expected unqualified-id before ‘const’
> /usr/include/libintl.h:81: error: expected `)' before ‘const’
> /usr/include/libintl.h:81: error: expected initializer before ‘const’
> /usr/include/libintl.h:85: error: expected unqualified-id before ‘const’
> /usr/include/libintl.h:85: error: expected `)' before ‘const’
> /usr/include/libintl.h:85: error: expected initializer before ‘const’
> ../../gcc/gcc/c-decl.c: In function ‘tree_node* finish_enum(tree_node*,
> tree_node*, tree_node*)’:
> ../../gcc/gcc/c-decl.c:7011: warning: comparison between signed and
> unsigned integer expressions
> ../../gcc/gcc/c-decl.c:7032: warning: comparison between signed and
> unsigned integer expressions
> make[3]: *** [c-decl.o] Error 1
> make[3]: Leaving directory `/home/guerby/cxx/build/gcc'
> make[2]: *** [all-stage1-gcc] Error 2
> make[2]: Leaving directory `/home/guerby/cxx/build'
> make[1]: *** [stage1-bubble] Error 2
> make[1]: Leaving directory `/home/guerby/cxx/build'
> make: *** [bootstrap] Error 2
>
> Given the error is in non Ada-related code I guess this has to do
> with the base C++ compiler and system headers in C++ mode, gcc16 is
> running Debian 4.0 and GCC 4.1.2 (which works for trunk bootstrap of c,c
> ++,ada):
>
> guerby@gcc16:~/cxx/build$ g++ --version
> g++ (GCC) 4.1.2 20061115 (prerelease) (Debian 4.1.1-21)
>
> gcc16 has a collection of GCC versions:
> guerby@gcc16:~/cxx/build$ ls /opt/cfarm/release/
> 4.2.0 ?4.2.1 ?4.2.2 ?4.2.3 ?4.2.4 ?4.3.0 ?4.3.1 ?4.3.2 ?4.3.3 ?4.4.0
>
> Using 4.2.3 as base compiler failed with the same error as system 4.1.2.
>
> Using 4.3.3 and 4.4.0 as base compiler bootstrap failed on Ada-related
> stuff, here gcc/ada/gcc-interface/decl.c:
>
> g++ -c ?-g -g -DIN_GCC ? -W -Wall -Wwrite-strings -Wcast-qual ? -fno-common ?-DHAVE_CONFIG_H -I.. -I. -Iada -I../../gcc/gcc -I../../gcc/gcc/ada -I../../gcc/gcc/../include -I../../gcc/gcc/../libcpp/include -\
> I/opt/cfarm/gmp-4.2.4//include -I/opt/cfarm/mpfr-2.4.1//include -I../../gcc/gcc/../libdecnumber -I../../gcc/gcc/../libdecnumber/bid -I../libdecnumber ? ?../../gcc/gcc/ada/gcc-interface/decl.c -o ada/decl.o
> ../../gcc/gcc/ada/gcc-interface/decl.c: In function 'tree_node* substitute_in_type(tree_node*, tree_node*, tree_node*)':
> ../../gcc/gcc/ada/gcc-interface/decl.c:7791: error: expected unqualified-id before 'new'
> ../../gcc/gcc/ada/gcc-interface/decl.c:7812: error: expected type-specifier before '=' token
> ../../gcc/gcc/ada/gcc-interface/decl.c:7812: error: lvalue required as left operand of assignment
> ../../gcc/gcc/ada/gcc-interface/decl.c:7813: error: expected type-specifier before ')' token
> ../../gcc/gcc/ada/gcc-interface/decl.c:7813: error: request for member 'base' in '*(int*)__t', which is of non-class type 'int'
> ../../gcc/gcc/ada/gcc-interface/decl.c:7813: error: request for member 'base' in '*(int*)__t', which is of non-class type 'int'
> ../../gcc/gcc/ada/gcc-interface/decl.c:7813: error: request for member 'base' in '*(int*)__t', which is of non-class type 'int'
> ../../gcc/gcc/ada/gcc-interface/decl.c:7813: error: request for member 'base' in '*(int*)__t', which is of non-class type 'int'
> ../../gcc/gcc/ada/gcc-interface/decl.c:7813: error: request for member 'base' in '*(int*)__t', which is of non-class type 'int'
> ../../gcc/gcc/ada/gcc-interface/decl.c:7813: error: cannot convert 'int* const' to 'const tree_node*' for argument '1' to 'void tree_check_failed(const tree_node*, const char*, int, const char*, ...)'
> ../../gcc/gcc/ada/gcc-interface/decl.c:7813: error: request for member 'type' in '*({...})', which is of non-class type 'int'
> ../../gcc/gcc/ada/gcc-interface/decl.c:7814: error: expected type-specifier before ')' token
> [...]
> make[3]: *** [ada/decl.o] Error 1
> make[3]: Leaving directory `/home/guerby/cxx/build/gcc'
> make[2]: *** [all-stage1-gcc] Error 2
> make[2]: Leaving directory `/home/guerby/cxx/build'
> make[1]: *** [stage1-bubble] Error 2
> make[1]: Leaving directory `/home/guerby/cxx/build'
> make: *** [bootstrap] Error 2
>
> I guess this has to do with reserved word conflict on "new":
>
> <<
> tree
> substitute_in_type (tree t, tree f, tree r)
> {
> ?tree new;
>>>
>
> Do you have some way to deal with this?

Use a non-reserved identifier.  I guess on trunk Ada doesn't build
with -Wc++-compat, does it?

Richard.

> Sincerely,
>
> Laurent
>
>
>
>