Build issues gcc10

[Ansuel Smith]

>
> > -----Original Message-----
> > From: Ansuel Smith [mailto:ansuelsmth at gmail.com]
> > Sent: Sonntag, 12. September 2021 19:18
> > To: Rui Salvaterra <rsalvaterra at gmail.com>
> > Cc: Adrian Schmutzler <mail at adrianschmutzler.de>; OpenWrt Development
> > List <openwrt-devel at lists.openwrt.org>
> > Subject: Re: Build issues gcc10
> >
> > Il giorno dom 12 set 2021 alle ore 19:16 Rui Salvaterra
> > <rsalvaterra at gmail.com> ha scritto:
> > >
> > > Hi, Adrian,
> > >
> > > On Sun, 12 Sept 2021 at 15:15, Adrian Schmutzler
> > > <mail at adrianschmutzler.de> wrote:
> > > >
> > > > I'm having build issues with master and (default) gcc10 on ipq targets.
> > >
> > > I don't know about ipq, but I jumped straight to GCC 11.2. Does it
> > > make sense to bother with 10? That said…
> > >
> > > > xgcc: fatal error: cannot execute 'cc1plus': execvp: No such file or
> > > > directory
> > >
> > > … you seem to be missing the C++ compiler.
> >
> > A missing dependency for the prereq? Could be that they changed the
> > default package for debian 10 and 11 and nobody notice that?
>
> That was my first suspicion as well, but I didn't really have a good idea what's missing ...
>
>

Did you try reinstalling  build-essential ?