Re: on how to compile gcc-4.6 correctly?

["Dennis, CHENG Renquan" <crquan at fedoraproject dot org>]

On Mon, Sep 6, 2010 at 10:51 PM, Kai Ruottu <kai.ruottu@wippies.com> wrote:
> This seems to be defined in a header generated during the build
> into the $BUILD/gcc :
>
> [root@localhost gcc]# grep ggc_alloc_cleared_lang_type *.h
> gtype-desc.h:#define ggc_alloc_cleared_lang_type_u() ((union lang_type_u
> *)(ggc_internal_cleared_alloc_stat (sizeof (union lang_type_u)
> MEM_STAT_INFO)))
>
> On CentOS 5.5/ia32 the build seemed to succeed for the
> 'x86_64-linux-gnu' target, using gcc-4.1.2 as the host
> and build compiler. ÂMust check the Fedora 13/x86_64
> host with its gcc-4.4.4 too but I wouldn't expect any
> change with it...
>
> So maybe the Gentoo distro has some problem...

No, I've tried compiling gcc-4.6-20100911 on ubuntu 10.04, the same
problem also happened;

and I also found that macro was defined in a generated header file, in
the gcc build directory;

renquan@flyer-1-1:~/src/gcc-4.6-build$ grep -RsInw
ggc_alloc_cleared_lang_type gcc/
gcc/gtype-desc.h:2451:#define ggc_alloc_cleared_lang_type() ((struct
lang_type *)(ggc_internal_cleared_alloc_stat (sizeof (struct
lang_type) MEM_STAT_INFO)))

this definition just doesn't accept any arguments, but inside
gcc/c-decl.c:7028 and 7311:

        space = ggc_alloc_cleared_lang_type (sizeof (struct lang_type));

  lt = ggc_alloc_cleared_lang_type (sizeof (struct lang_type));

both passes 1 argument, so the compiler report error, so the problem
is how can you succeed compiling that?

renquan@flyer-1-1:~/src/gcc-4.6-build$ (cd gcc/; gcc -c
-DIN_GCC_FRONTEND -g -O2 -DIN_GCC   -W -Wall -Wwrite-strings
-Wcast-qual -Wstrict-prototypes -Wmissing-prototypes
-Wmissing-format-attribute -pedantic -Wno-long-long
-Wno-variadic-macros -Wno-overlength-strings -Wold-style-definition
-Wc++-compat -fno-common  -DHAVE_CONFIG_H -I. -I.
-I../../gcc-4.6-20100911/gcc -I../../gcc-4.6-20100911/gcc/.
-I../../gcc-4.6-20100911/gcc/../include
-I../../gcc-4.6-20100911/gcc/../libcpp/include
-I/opt/gektop/usr/include
-I../../gcc-4.6-20100911/gcc/../libdecnumber
-I../../gcc-4.6-20100911/gcc/../libdecnumber/bid -I../libdecnumber
../../gcc-4.6-20100911/gcc/c-decl.c)
../../gcc-4.6-20100911/gcc/c-decl.c: In function âgrokdeclaratorâ:
../../gcc-4.6-20100911/gcc/c-decl.c:5536: warning: format not a string
literal and no format arguments
../../gcc-4.6-20100911/gcc/c-decl.c: In function âgrokparmsâ:
../../gcc-4.6-20100911/gcc/c-decl.c:6197: warning: format not a string
literal and no format arguments
../../gcc-4.6-20100911/gcc/c-decl.c:7028:64: error: macro
"ggc_alloc_cleared_lang_type" passed 1 arguments, but takes just 0
../../gcc-4.6-20100911/gcc/c-decl.c: In function âfinish_structâ:
../../gcc-4.6-20100911/gcc/c-decl.c:7028: error:
âggc_alloc_cleared_lang_typeâ undeclared (first use in this function)
../../gcc-4.6-20100911/gcc/c-decl.c:7028: error: (Each undeclared
identifier is reported only once
../../gcc-4.6-20100911/gcc/c-decl.c:7028: error: for each function it
appears in.)
../../gcc-4.6-20100911/gcc/c-decl.c:7311:62: error: macro
"ggc_alloc_cleared_lang_type" passed 1 arguments, but takes just 0
../../gcc-4.6-20100911/gcc/c-decl.c: In function âfinish_enumâ:
../../gcc-4.6-20100911/gcc/c-decl.c:7311: error:
âggc_alloc_cleared_lang_typeâ undeclared (first use in this function)

Thanks,