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From: Jonathan Wakely <jwakely.gcc@gmail.com>
Date: Wed, 11 May 2022 09:10:39 +0100
Message-ID: <CAH6eHdS0dFaou7RC_WzfiRS7_BVr+Xg-UfAhqgsCJ4nSHOWjMg@mail.gmail.com>
Subject: Re: libjava configure fails on finding no C compiler in $PATH despite
 gcc being present
To: Zopolis0 <creatorsmithmdt@gmail.com>
Cc: Xi Ruoyao <xry111@xry111.site>, gcc-help <gcc-help@gcc.gnu.org>
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It's possible you'll need to regenerate the libjava/configure script
and the libjava/tools/Makefile.in template, because since libjava was
removed from GCC the rest of the source tree was updated to use a
newer automake and autoconf:

https://gcc.gnu.org/g:22e052725189a472e4e86ebb6595278a49f4bcdd

   Update GCC to autoconf 2.69, automake 1.15.1 (PR bootstrap/82856).

Maybe it doesn't matter, if the libjava configure is self-contained.
But it's something to be aware of.