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Date:      Wed, 18 Sep 2024 07:26:43 +0000
From:      bugzilla-noreply@freebsd.org
To:        ports-bugs@FreeBSD.org
Subject:   [Bug 281557] net/mpich: fix build with clang 19 on i386
Message-ID:  <bug-281557-7788-kvch4YBc51@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-281557-7788@https.bugs.freebsd.org/bugzilla/>
References:  <bug-281557-7788@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D281557

--- Comment #3 from commit-hook@FreeBSD.org ---
A commit in branch main references this bug:

URL:
https://cgit.FreeBSD.org/ports/commit/?id=3D9d5e42894b39c428c6241efb1a053f7=
e571a6fee

commit 9d5e42894b39c428c6241efb1a053f7e571a6fee
Author:     Dimitry Andric <dim@FreeBSD.org>
AuthorDate: 2024-09-17 20:30:17 +0000
Commit:     Dimitry Andric <dim@FreeBSD.org>
CommitDate: 2024-09-18 07:24:55 +0000

    net/mpich: fix build with clang 19 on i386

    In bug 276035 this was already handled once, but with clang 19 on i386
    we get similar link errors:

      ld: error: undefined reference: __addtf3
      >>> referenced by lib/.libs/libmpi.so (disallowed by
--no-allow-shlib-undefined)

      ld: error: undefined reference: __gttf2
      >>> referenced by lib/.libs/libmpi.so (disallowed by
--no-allow-shlib-undefined)

      ld: error: undefined reference: __lttf2
      >>> referenced by lib/.libs/libmpi.so (disallowed by
--no-allow-shlib-undefined)

      ld: error: undefined reference: __multf3
      >>> referenced by lib/.libs/libmpi.so (disallowed by
--no-allow-shlib-undefined)

      ld: error: undefined reference: __extendxftf2
      >>> referenced by lib/.libs/libmpi.so (disallowed by
--no-allow-shlib-undefined)

      ld: error: undefined reference: __trunctfxf2
      >>> referenced by lib/.libs/libmpi.so (disallowed by
--no-allow-shlib-undefined)

    Again the cause is that the mpich configure script detects partial
    float128 support on i386 (i.e. the compile doesn't immediately choke on
    defining variables of that type). It then enables HAVE_FLOAT128, which
    leads to the above errors, because compiler-rt does not support float128
    on i386.

    PR:             281557
    Approved by:    laurent.chardon@gmail.com (maintainer)
    MFH:            2024Q3

 net/mpich/Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

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