When autoconf and automake is built on macOS, the system perl sometimes cannot find Autom4te or Automake::Config.
Example: <https://github.com/Homebrew/linuxbrew-core/issues/950> <https://superuser.com/questions/458233/cant-locate-automake-config-pm-when-trying-to-run-aclocal-command-in-os-x-10-7> <https://superuser.com/questions/617872/cant-locate-autom4te-channeldefs-pm-in-inc-when-it-definitely-is-there> I am not quite certain about this, but I assume that the INC location of system perl on macOS is causing the problem. >From default perl on macOS: @INC: /Library/Perl/5.30/darwin-thread-multi-2level /Library/Perl/5.30 /Network/Library/Perl/5.30/darwin-thread-multi-2level /Network/Library/Perl/5.30 /Library/Perl/Updates/5.30.3/darwin-thread-multi-2level /Library/Perl/Updates/5.30.3 /System/Library/Perl/5.30/darwin-thread-multi-2level /System/Library/Perl/5.30 /System/Library/Perl/Extras/5.30/darwin-thread-multi-2level /System/Library/Perl/Extras/5.30 The user-installed perl has different location. @INC: /usr/local/lib/perl5/site_perl/5.36.0/darwin-2level /usr/local/lib/perl5/site_perl/5.36.0 /usr/local/lib/perl5/5.36.0/darwin-2level /usr/local/lib/perl5/5.36.0 I guess that the default perl on macOS cannot recognize .pm files under /usr/local/share. When I installed autoconf from the source code first time and executed it, it showed this error lines. Can't locate Autom4te/ChannelDefs.pm in @INC (you may need to install the Autom4te::ChannelDefs module) I tried many methods to solve this, and when I installed perl from source, the problem was solved. I guess we can solve this problem by setting PERL5LIB, but I don't know specifically since I don't have any knowledge in perl. ------- Original Message ------- On Saturday, November 19th, 2022 at 11:03 PM, Paul Eggert <egg...@cs.ucla.edu> wrote: > On 2022-11-19 13:20, Minsoo Choo wrote: > > > +On macOS, users should not use the default perl, but manually install > > +it fromhttps://www.perl.org/get.html. > > > Could you explain why this advice is helpful? What is the default perl > version on macOS, and do different macOS versions have different perl > versions, and why doesn't the most recent macOS version work with Autoconf?
