[Bug 240737] devel/llvm90: -fopenmp fails with LLD_LINK=off

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=240737

            Bug ID: 240737
           Summary: devel/llvm90: -fopenmp fails with LLD_LINK=off
           Product: Ports & Packages
           Version: Latest
          Hardware: Any
                OS: Any
            Status: New
          Keywords: needs-patch
          Severity: Affects Only Me
          Priority: ---
         Component: Individual Port(s)
          Assignee: brooks at FreeBSD.org
          Reporter: jbeich at FreeBSD.org
             Flags: maintainer-feedback?(brooks at FreeBSD.org)
          Assignee: brooks at FreeBSD.org

https://bugs.llvm.org/show_bug.cgi?id=32279 still affects WITHOUT_LLD_IS_LD
architectures. Either files/openmp/patch-bug32279 needs to be copied/rebased
from llvm80 or LLD_LINK enabled everywhere.

$ uname -rp
11.3-RELEASE i386
$ pkg install -qy ca_root_nss llvm90
$ fetch https://computing.llnl.gov/tutorials/openMP/samples/C/omp_hello.c
$ clang90 -fopenmp omp_hello.c
/usr/local/llvm90/lib/libomp.so: undefined reference to `scalbnl'
/usr/local/llvm90/lib/libomp.so: undefined reference to `fmaxl'
/usr/local/llvm90/lib/libomp.so: undefined reference to `logbl'
/usr/local/llvm90/lib/libomp.so: undefined reference to `fmaxf'
/usr/local/llvm90/lib/libomp.so: undefined reference to `scalbnf'
/usr/local/llvm90/lib/libomp.so: undefined reference to `fmax'
/usr/local/llvm90/lib/libomp.so: undefined reference to `scalbn'
clang-9: error: linker command failed with exit code 1 (use -v to see
invocation)

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