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Date:      Tue, 27 Mar 2018 13:30:26 +0000
From:      bugzilla-noreply@freebsd.org
To:        freebsd-ports-bugs@FreeBSD.org
Subject:   [Bug 226976] math/rexx-regmath: fails to link with lld as system linker
Message-ID:  <bug-226976-13@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D226976

            Bug ID: 226976
           Summary: math/rexx-regmath: fails to link with lld as system
                    linker
           Product: Ports & Packages
           Version: Latest
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: Individual Port(s)
          Assignee: freebsd-ports-bugs@FreeBSD.org
          Reporter: emaste@freebsd.org
                CC: bob@eager.cx
            Blocks: 214864
                CC: bob@eager.cx
             Flags: maintainer-feedback?(bob@eager.cx)

I'm working on switching to LLVM's lld linker as the FreeBSD system linker
(/usr/bin/ld)[1], and the port in this PR is reported as a new failure in t=
he
exp-run, PR 214864.

An excerpt from the build log[2]:
---
cc  -O2 -pipe  -Wno-incompatible-pointer-types -fstack-protector
-fno-strict-aliasing  -g -pipe -fpic -I $HOME/regina -pipe -I/usr/local/inc=
lude
-Wno-incompatible-pointer-types -c rexxmath.c -o rexxmath.o
ld -Bdynamic -Bshareable  rexxmath.o -lm -o librexxmath.so
ld: error: unable to find library -lm
---
Known issues in this port or in lld that affect this port:

(2) lld has no built-in search paths (/lib, /usr/lib). Normally the linker =
is
invoked from the compiler driver, and the search paths are added by the
compiler. If lld is invoked directly library search paths must be specified
explicitly, with -L/lib -L/usr/lib.

FreeBSD 11 and later have lld available as /usr/bin/ld.lld, so one simple
option for testing is to just symlink /usr/bin/ld to ld.lld (and restore it=
 to
ld.bfd).

A port Makefile knob, LLD_UNSAFE=3Dyes, exists to indicate that a port does=
 not
work with lld, and requires either /usr/bin/ld.bfd or binutils from ports. =
This
should work for the common case of ports written in C using GNU autoconf; it
may have no effect on other ports.

[1] https://lists.freebsd.org/pipermail/freebsd-current/2018-March/068985.h=
tml
[2]
http://package18.nyi.freebsd.org/data/headamd64PR214864-default/2018-03-21_=
17h43m11s/logs/errors/rexx-regmath-1.00.log


Referenced Bugs:

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D214864
[Bug 214864] [exp-run] test build with lld as /usr/bin/ld
--=20
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