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[bug #58347] Build failure on 32-bit ARM

From: anonymous
Subject: [bug #58347] Build failure on 32-bit ARM
Date: Sun, 10 May 2020 21:56:16 -0400 (EDT)
User-agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:76.0) Gecko/20100101 Firefox/76.0


                 Summary: Build failure on 32-bit ARM
                 Project: make
            Submitted by: None
            Submitted on: Mon 11 May 2020 01:56:14 AM UTC
                Severity: 3 - Normal
              Item Group: Bug
                  Status: None
                 Privacy: Public
             Assigned to: None
             Open/Closed: Open
         Discussion Lock: Any
       Component Version: 4.3
        Operating System: POSIX-Based
           Fixed Release: None
           Triage Status: None



makeint.h apparently believes (line 118-120) that no system that defines __arm
is actually POSIX, an assumption that seems to have existed since 1994 but is
clearly now nonsense.

job.c line 507, which is inside a block that is compiled only when POSIX is
_not_ defined but HAVE_SIGSETMASK is, contains both an outright syntax error
(missing semicolon) and a reference to an obsolete and non-portable function
whose existence is not tested for by configure. This bug appears to have
existed since 2017.

Together, these prevent compilation on any POSIX system which defines __arm,
including but probably not limited to FreeBSD on armv6/armv7 targets.

cf. https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=246351


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