"automake: warnings are treated as errors" is most likely your problem.
Check your environment; it looks like automake will treat WARNINGS=error as a request for this, for example. There may be other triggers as well. Alternatively, to fix the "subdir-objects" warning at least you can try using the unofficial patchset at https://sourceforge.net/u/uecasm/etherlab-patches/ci/default/tree/ -- it definitely resolves that particular warning, though I'm not sure if it's completely warning-clean. Gavin Lambert Senior Software Developer [cid:logo_compac_5dcf97ef-52f5-498c-8b9b-728410ddffaf.png] [cid:compacicon_82e8a8c7-154a-4a32-9720-a5badb6258e0.png]<http://www.compacsort.com> [cid:facebook_fa85b924-53b9-45cc-8162-0564f64ec3a3.png] <https://www.facebook.com/Compacsort> [cid:linkedin_4ec016ad-84fa-443c-85a3-b9615a4ccef8.png] <https://www.linkedin.com/company/compac-sorting-equipment/> [cid:youtube_32142163-fc27-4aed-b14d-e8a377f98a6d.png] <https://vimeo.com/compacsort> [cid:twitter_d89338d8-98c8-4b65-9a9e-7b1333160b0d.png] <https://twitter.com/compacsort> [cid:insta2_1cd85de9-b3a2-4971-9904-52b2481a7c82.png] <https://www.instagram.com/compacsort/> COMPAC SORTING EQUIPMENT LTD | 4 Henderson Pl | Onehunga | Auckland 1061 | New Zealand Switchboard: +64 96 34 00 88 | tomra.com<http://www.tomra.com> The information contained in this communication and any attachment is confidential and may be legally privileged. It should only be read by the person(s) to whom it is addressed. If you have received this communication in error, please notify the sender and delete the communication. From: Steih, Martin Sent: Wednesday, 17 June 2020 23:14 To: etherlab-users@etherlab.org Subject: [etherlab-users] etherlab-users@etherlab.org Hello, lately, after getting the code from sourceforge, I am getting errors trying to bootstrap the etherlab-master code. See the output below. Has anyone an idea of why this error occurs? It did not occur two month ago but now occurs consistently on stretch as well buster. + touch ChangeLog + autoreconf -i configure.ac:44: installing 'autoconf/compile' configure.ac:44: installing 'autoconf/config.guess' configure.ac:44: installing 'autoconf/config.sub' configure.ac:33: installing 'autoconf/install-sh' configure.ac:33: installing 'autoconf/missing' examples/dc_user/Makefile.am: installing 'autoconf/depcomp' automake: warnings are treated as errors /usr/share/automake-1.15/am/ltlibrary.am: warning: 'libethercat.la': linking libtool libraries using a non-POSIX /usr/share/automake-1.15/am/ltlibrary.am: archiver requires 'AM_PROG_AR' in 'configure.ac' lib/Makefile.am:33: while processing Libtool library 'libethercat.la' tool/Makefile.am:38: warning: source file '../master/soe_errors.c' is in a subdirectory, tool/Makefile.am:38: but option 'subdir-objects' is disabled automake: warning: possible forward-incompatibility. automake: At least a source file is in a subdirectory, but the 'subdir-objects' automake: automake option hasn't been enabled. For now, the corresponding output automake: object file(s) will be placed in the top-level directory. However, automake: this behaviour will change in future Automake versions: they will automake: unconditionally cause object files to be placed in the same subdirectory automake: of the corresponding sources. automake: You are advised to start using 'subdir-objects' option throughout your automake: project, to avoid future incompatibilities. autoreconf: automake failed with exit status: 1 i. A. Martin Steih Entwicklung ________________________________ Lachmann & Rink GmbH Hommeswiese 129 57258 Freudenberg Telefon: +49 2734 2817 430 Telefax: +49 2734 2817 20 E-Mail: martin.st...@lachmann-rink.de<mailto:martin.st...@lachmann-rink.de> Internet: https://www.lachmann-rink.de<https://eur02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.lachmann-rink.de%2F&data=02%7C01%7Cgavin.lambert%40tomra.com%7C94279f4876634a12e92b08d812af8db1%7C4308d118edd143008a37cfeba8ad5898%7C0%7C1%7C637279892488258193&sdata=0e66EYQm2S9o5uCghDPolqr29ysIb1gux8O0utsDnYQ%3D&reserved=0> Geschäftsführer: Dipl.-Ing. Arjan Bijlard, Dipl.-Inf. Claudius Rink Amtsgericht Siegen, HRB 2600
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