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Re: devel/libiberty breaks lang/{gcc46,gcc47,gcc48} builds (Was: alloca.c build failures for gcc46, gcc47 and gcc48 on netbsd-6 amd64)

Is there a way to add a 'BUILD_CONFLICT' or equivalent? On netbsd-6 if
something has pulled in devel/libiberty it is impossible to build
gcc46,47, or 48?

This just bit me again on a fresh pkgsrc build on a netbsd-6 host...

On 18 November 2014 at 22:50, David Brownlee <> wrote:
> devel/libiberty, which appears to be from a relatively ancient version
> of gcc (3.4.0), breaks lang/gcc4{6,7,8} builds. Specifically it the
> version of libiberty.h is used in preference to the one bundled with
> gcc.
> The offending line command was
>  /var/obj/pkg/lang/gcc46/work/obj/./prev-gcc/xgcc
> -B/var/obj/pkg/lang/gcc46/work/obj/./prev-gcc/
> -B/usr/pkg/gcc46/x86_64-unknown-netbsd6.1./bin/
> -B/usr/pkg/gcc46/x86_64-unknown-netbsd6.1./bin/
> -B/usr/pkg/gcc46/x86_64-unknown-netbsd6.1./lib/ -isystem
> /usr/pkg/gcc46/x86_64-unknown-netbsd6.1./include -isystem
> /usr/pkg/gcc46/x86_64-unknown-netbsd6.1./sys-include    -c
> -DHAVE_CONFIG_H -g -O2 -gtoggle
> -I/var/obj/pkg/lang/gcc46/work/.buildlink/include -I/usr/pkg/include
> -I/usr/include -I.
> -I/var/obj/pkg/lang/gcc46/work/gcc-4.6.4/libiberty/../include  -W
> -Wall -Wwrite-strings -Wc++-compat -Wstrict-prototypes -pedantic
> -fpic /var/obj/pkg/lang/gcc46/work/gcc-4.6.4/libiberty/alloca.c -o
> pic/alloca.o
> and the error (due to a missing XNEWVEC definition)
> /var/obj/pkg/lang/gcc46/work/gcc-4.6.4/libiberty/alloca.c:200:43:
> error: expected expression before 'char'
> Obviously the value of an ancient libiberty.h is somewhat
> questionable, but it might make sense for a gcc/build guru to take a
> poke at the gcc build config to make it more robust...

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