bug#49350: closed (gcc-toolchain compilation error with -nostdinc++)

[GNU bug Tracking System]

Your message dated Tue, 27 Jul 2021 10:07:33 +0200
with message-id <87y29s89iy.fsf@mailbox.org>
and subject line Re: bug#49350: gcc-toolchain compilation error with -nostdinc++
has caused the debbugs.gnu.org bug report #49350,
regarding gcc-toolchain compilation error with -nostdinc++
to be marked as done.

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-- 
49350: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=49350
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> --- Begin Message ---
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> Subject: 
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> gcc-toolchain compilation error with -nostdinc++
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> Date: 
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> Sat, 03 Jul 2021 12:41:11 +0200
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> Hi all,
>
>
> I've problems compiling LLVM manually with the gcc-toolchain.
> sanitizer_posix_libcdep.cpp is build with -nostdinc++ and fails to find
> bits/c++config.h.
>
> I think the issue can be reproduced with this example test.cpp:
>
> #include <stdlib.h>
> int main() { return 0; }
>
> c++ from archlinux compiles that file, while c++ from gcc-toolchain doesn't:
>
> $ c++ -nostdinc++ test.cpp
> $ guix environment --ad-hoc gcc-toolchain -- c++ -nostdinc++ test.cpp
> In file included from 
> /gnu/store/nh9r04xhzmbk3hjsj92yhlhmjsp521g4-profile/include/c++/stdlib.h:36,
>                  from test.cpp:1:
> /gnu/store/nh9r04xhzmbk3hjsj92yhlhmjsp521g4-profile/include/c++/cstdlib:41:10: 
> fatal error: bits/c++config.h: No such file or directory
>    41 | #include <bits/c++config.h>
>       |          ^~~~~~~~~~~~~~~~~~
> compilation terminated.
>
> Is this expected and I'm doing something wrong?
>
> Thanks & best regards,
> Ontje
>
>
>
> --- End Message ---
> --- Begin Message ---
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>
>
> Subject: 
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> Re: bug#49350: gcc-toolchain compilation error with -nostdinc++
>
>
>
>
> Date: 
>
> Tue, 27 Jul 2021 10:07:33 +0200
>
>
>
>
> Hi Sarah,
>
>
> Sarah Morgensen <iskarian@mgsn.dev> writes:
>
> > The issue seems to be with the (automatically set by Guix)
> > CPLUS_INCLUDE_PATH environment variable. The following works as
> > expected:
> >
> >   guix environment --pure --ad-hoc gcc-toolchain -- CPLUS_INCLUDE_PATH= c++ 
> > -nostdinc++ test.cpp
>
> thanks, this solved my problem.
>
> Best regards,
> Ontje
>
>
> --- End Message ---