Bug 226971 - audio/invada-studio-plugins-lv2: fails to build with lld as /usr/bin/ld
Summary: audio/invada-studio-plugins-lv2: fails to build with lld as /usr/bin/ld
Status: Closed FIXED
Alias: None
Product: Ports & Packages
Classification: Unclassified
Component: Individual Port(s) (show other bugs)
Version: Latest
Hardware: Any Any
: --- Affects Only Me
Assignee: Yuri Victorovich
Depends on:
Blocks: 214864
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Reported: 2018-03-27 13:08 UTC by Ed Maste
Modified: 2018-03-31 18:35 UTC (History)
2 users (show)

See Also:
bugzilla: maintainer-feedback? (yuri)


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Description Ed Maste freebsd_committer 2018-03-27 13:08:48 UTC
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 the exp-run, PR 214864.

An excerpt from the build log[2]:
ld: error: unknown argument: -fstack-protector
ld: error: unknown argument: -fPIC
ld: error: unable to find library -lc
ld: error: unable to find library -lm
ld: error: unable to find library -lpthread

Known issues in this port or in lld that affect this port:
(1) Passing compiler flags to the linker, such as -fPIC.

(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=yes, 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.html
[2] http://package18.nyi.freebsd.org/data/headamd64PR214864-default/2018-03-21_17h43m11s/logs/errors/invada-studio-plugins-lv2-1.2.0.log
Comment 1 Yuri Victorovich freebsd_committer 2018-03-27 19:58:40 UTC
> ld: error: unknown argument: -fstack-protector

-fstack-protector is added to LDFLAGS by the framework:
> $ make -V LDFLAGS
> -fstack-protector

You may want to fix it there.
Comment 2 commit-hook freebsd_committer 2018-03-27 20:10:17 UTC
A commit references this bug:

Author: yuri
Date: Tue Mar 27 20:10:03 UTC 2018
New revision: 465747
URL: https://svnweb.freebsd.org/changeset/ports/465747

  audio/invada-studio-plugins-lv2: Remove -fPIC from the linker command line for LLVM's lld linker

  PR:		226971
  Reported by:	emaste

Comment 3 Ed Maste freebsd_committer 2018-03-27 20:59:49 UTC
(In reply to Yuri Victorovich from comment #1)
LDFLAGS added by bsd.ssp.mk are intended to be passed to the compiler driver used for linking, not to the linker directly; CC'd bdrewery for any further comments.
Comment 4 commit-hook freebsd_committer 2018-03-31 18:35:01 UTC
A commit references this bug:

Author: krion
Date: Sat Mar 31 18:34:51 UTC 2018
New revision: 466075
URL: https://svnweb.freebsd.org/changeset/ports/466075

  Switch to ld.bfd by default as ld.ldd doesn't have built-in default
  output target.

  PR:		226971
  Submitted by:	emaste
  Approved by:	portmgr (LLD_UNSAFE blanket)