Date: Sat, 23 Mar 2019 13:54:12 +0000 From: bugzilla-noreply@freebsd.org To: ports-bugs@FreeBSD.org Subject: [Bug 236734] devel/libtool: C++ libraries are linked with -nostdlib Message-ID: <bug-236734-7788@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D236734 Bug ID: 236734 Summary: devel/libtool: C++ libraries are linked with -nostdlib Product: Ports & Packages Version: Latest Hardware: Any OS: Any Status: New Severity: Affects Only Me Priority: --- Component: Individual Port(s) Assignee: tijl@FreeBSD.org Reporter: rakuco@FreeBSD.org Flags: maintainer-feedback?(tijl@FreeBSD.org) Assignee: tijl@FreeBSD.org When C++ libraries are built with libtool, they are linked with -nostdlib by default, which then causes flags such as -pthread to be ignored, resulting = in shared libraries that do not have all necessary DT_NEEDED entries. This happens to graphics/ilmbase, where libIlmThread.so is linked with -nostdlib -pthread and ends up not linking against libthr.so. With the rece= nt work in HEAD to make lld use --no-allow-shlib-undefined by default when lin= king executables, we end up with failures like the one in graphics/krita (http://beefy12.nyi.freebsd.org/data/head-amd64-default/p496405_s345355/log= s/krita-4.1.8_1.log): ld: error: /usr/local/lib/libIlmThread.so: undefined reference to pthread_create c++: error: linker command failed with exit code 1 (use -v to see invocatio= n) There are some old reports from Linux distros complaining about the same problem: https://bugzilla.redhat.com/show_bug.cgi?id=3D661333 and https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=3D468555 Distros have since just started patching ilmbase to make it use -lpthread instead of -pthread when linking: https://git.archlinux.org/svntogit/packages.git/tree/trunk/ilmbase-2.0.1-no= _undefined.patch?h=3Dpackages/ilmbase and https://salsa.debian.org/debian-phototools-team/ilmbase/blob/master/debian/= rules#L29, for example. I wonder if we should change the libtool port, or just start patching ilmba= se as well. --=20 You are receiving this mail because: You are the assignee for the bug.=
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