Bug 605040

Summary:	=sys-libs/libomp-3.9.1: Link fails when actually using on amd64-fbsd
Product:	Gentoo/Alt	Reporter:	Yuta SATOH <nigoro.dev>
Component:	FreeBSD	Assignee:	Gentoo/BSD Team <bsd+disabled>
Status:	RESOLVED OBSOLETE
Severity:	normal	CC:	llvm, voyageur
Priority:	Normal
Version:	unspecified
Hardware:	AMD64
OS:	FreeBSD
Whiteboard:
Package list:		Runtime testing required:	---

Description Yuta SATOH 2017-01-08 10:50:09 UTC

Package compilation and installation succeed.
However, when trying to actually use it, the link fails.

Please add 'sys-devel/clang-runtime openmp' to package.use.mask.

# clang -fopenmp=libomp test_omp.c -v -o test_omp
clang version 3.9.1 (tags/RELEASE_391/final)
Target: x86_64-gentoo-freebsd11.0
Thread model: posix
InstalledDir: /usr/bin
 "/usr/bin/clang-3.9" -cc1 -triple x86_64-gentoo-freebsd11.0 -emit-obj -mrelax-all -disable-free -disable-llvm-verifier -discard-value-names -main-file-name test_omp.c -mrelocation-model static -mthread-model posix -mdisable-fp-elim -masm-verbose -mconstructor-aliases -munwind-tables -target-cpu x86-64 -v -dwarf-column-info -debugger-tuning=gdb -resource-dir /usr/bin/../lib/clang/3.9.1 -fdebug-compilation-dir /tmp -ferror-limit 19 -fmessage-length 160 -fopenmp -fobjc-runtime=gnustep -fdiagnostics-show-option -fcolor-diagnostics -o /tmp/test_omp-45c561.o -x c test_omp.c
clang -cc1 version 3.9.1 based upon LLVM 3.9.1 default target x86_64-gentoo-freebsd11.0
#include "..." search starts here:
#include <...> search starts here:
 /usr/bin/../lib/clang/3.9.1/include
 /usr/include
End of search list.
 "/usr/bin/x86_64-gentoo-freebsd11.0-ld" --eh-frame-hdr -dynamic-linker /libexec/ld-elf.so.1 --hash-style=both --enable-new-dtags -o test_omp /usr/lib/crt1.o /usr/lib/crti.o /usr/lib/crtbegin.o -L/usr/lib /tmp/test_omp-45c561.o -lomp -lgcc --as-needed -lgcc_s --no-as-needed -lc -lgcc --as-needed -lgcc_s --no-as-needed /usr/lib/crtend.o /usr/lib/crtn.o
/usr/lib/libomp.so: undefined reference to `scalbnl'
/usr/lib/libomp.so: undefined reference to `logb'
/usr/lib/libomp.so: undefined reference to `scalbnf'
/usr/lib/libomp.so: undefined reference to `scalbn'
/usr/lib/libomp.so: undefined reference to `logbl'
/usr/lib/libomp.so: undefined reference to `logbf'
/usr/lib/libomp.so: undefined reference to `fmaxl'
clang-3.9: error: linker command failed with exit code 1 (use -v to see invocation)


FYI,
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=214258
https://reviews.freebsd.org/D6362?id=20677

Comment 1 Michał Górny archtester

2017-01-08 12:59:42 UTC

Looks like missing -lm when linking libomp. I wonder if that applies to all arches.

Comment 2 Michał Górny archtester

2019-10-11 17:37:25 UTC

*-fbsd is gone.