Sorry, that mail is almost duplicate with another one, which was sent
by accident.
At Thu, 12 Mar 2020 14:59:44 +0900 (JST), Kyotaro Horiguchi <horikyota.ntt@gmail.com> wrote in
> +1 for requiring such options for the same reason. The current patch
> disables LLVM for the enviroment where clang is installed but ccache
> is not, while building an extension based on postgresql-devel package.
> (ccache is in EPEL on RHEL/CentOS.)
>
> A bit aside from LLVM itself, I'd like CC/CPP/CLANG to fall back to
> them in the PATH on the running environment if they don't exist.
--
Kyotaro Horiguchi
NTT Open Source Software Center