[MacPorts] #50853: "dyld: Library not loaded: @rpath/libLLVM.dylib" in clang-3.8 and ld64-latest +llvm38

[MacPorts]

#50853: "dyld: Library not loaded: @rpath/libLLVM.dylib" in clang-3.8 and
ld64-latest +llvm38
-------------------------+--------------------------------------------
 Reporter:  rjvbertin@…  |      Owner:  macports-tickets@…
     Type:  defect       |     Status:  new
 Priority:  Normal       |  Milestone:
Component:  ports        |    Version:  2.3.4
 Keywords:               |       Port:  llvm-3.8, clang-3.8, ld-latest
-------------------------+--------------------------------------------
 I have have just installed the binary llvm+clang 3.8 packages for OS X
 10.9 and am running into issues with them.

 With ld64_latest +llvm37 installed, I'm seeing ld-latest crashing and
 errors like this:

 {{{
 > clang++-mp-3.8 -O3 -march=native -v -o kk crc32test.cpp
 clang version 3.8.0 (branches/release_38 262722)
 Target: x86_64-apple-darwin13.4.0
 Thread model: posix
 InstalledDir: /opt/local/libexec/llvm-3.8/bin
  "/opt/local/libexec/llvm-3.8/bin/clang" -cc1 -triple x86_64-apple-
 macosx10.9.0 -Wdeprecated-objc-isa-usage -Werror=deprecated-objc-isa-usage
 -emit-obj -disable-free -disable-llvm-verifier -main-file-name
 crc32test.cpp -mrelocation-model pic -pic-level 2 -mthread-model posix
 -mdisable-fp-elim -masm-verbose -munwind-tables -target-cpu sandybridge
 -target-feature -sse4a -target-feature -avx512bw -target-feature +cx16
 -target-feature -tbm -target-feature +xsave -target-feature -fma4 -target-
 feature -avx512vl -target-feature -prfchw -target-feature -bmi2 -target-
 feature -adx -target-feature -xsavec -target-feature -fsgsbase -target-
 feature +avx -target-feature -avx512cd -target-feature -avx512pf -target-
 feature -rtm -target-feature +popcnt -target-feature -fma -target-feature
 -bmi -target-feature +aes -target-feature -rdrnd -target-feature -xsaves
 -target-feature +sse4.1 -target-feature +sse4.2 -target-feature -avx2
 -target-feature -avx512er -target-feature +sse -target-feature -lzcnt
 -target-feature +pclmul -target-feature -avx512f -target-feature -f16c
 -target-feature +ssse3 -target-feature +mmx -target-feature -pku -target-
 feature +cmov -target-feature -xop -target-feature -rdseed -target-feature
 -movbe -target-feature -hle -target-feature +xsaveopt -target-feature -sha
 -target-feature +sse2 -target-feature +sse3 -target-feature -avx512dq
 -target-linker-version 253.3 -v -dwarf-column-info -debugger-tuning=lldb
 -resource-dir /opt/local/libexec/llvm-3.8/bin/../lib/clang/3.8.0
 -stdlib=libc++ -O3 -fdeprecated-macro -fdebug-compilation-dir
 /Users/bertin/work/src/new/Qt -ferror-limit 19 -fmessage-length 132
 -stack-protector 1 -fblocks -fobjc-runtime=macosx-10.9.0 -fencode-
 extended-block-signature -fcxx-exceptions -fexceptions -fmax-type-align=16
 -fdiagnostics-show-option -fcolor-diagnostics -vectorize-loops -vectorize-
 slp -o /var/folders/j1/1439ppj08xj8h6006s6drbq00000gs/T/crc32test-254929.o
 -x c++ crc32test.cpp
 clang -cc1 version 3.8.0 based upon LLVM 3.8.0 default target x86_64
 -apple-darwin13.4.0
 ignoring nonexistent directory "/usr/include/c++/v1"
 #include "..." search starts here:
 #include <...> search starts here:
  /opt/local/libexec/llvm-3.8/bin/../include/c++/v1
  /usr/local/include
  /opt/local/libexec/llvm-3.8/bin/../lib/clang/3.8.0/include
  /usr/include
  /System/Library/Frameworks (framework directory)
  /Library/Frameworks (framework directory)
 End of search list.
  "/opt/local/libexec/llvm-3.8/bin/ld" -demangle -dynamic -arch x86_64
 -macosx_version_min 10.9.0 -o kk
 /var/folders/j1/1439ppj08xj8h6006s6drbq00000gs/T/crc32test-254929.o -lc++
 -lSystem
 /opt/local/libexec/llvm-3.8/bin/../lib/clang/3.8.0/lib/darwin/libclang_rt.osx.a
 dyld: Library not loaded: @rpath/libLLVM.dylib
   Referenced from: /opt/local/libexec/llvm-3.8/lib/libLTO.dylib
   Reason: image not found
 clang: error: unable to execute command: Trace/BPT trap: 5
 clang: error: linker command failed due to signal (use -v to see
 invocation)
 }}}

 When I build ld64-latest +llvm38 (non-default variant so by definition a
 local build) I'm seeing this:

 {{{
 %> otool -L /opt/local/bin/ld-latest
 /opt/local/bin/ld-latest:
         @rpath/libLTO.dylib (compatibility version 1.0.0, current version
 3.8.0)
         /usr/lib/libxar.1.dylib (compatibility version 1.0.0, current
 version 1.0.0)
         /usr/lib/libc++.1.dylib (compatibility version 1.0.0, current
 version 120.0.0)
         /usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current
 version 1197.1.1)

 %> /opt/local/bin/ld-latest
 dyld: Library not loaded: @rpath/libLTO.dylib
   Referenced from: /opt/local/bin/ld-latest
   Reason: image not found
 Trace/BPT trap
 Exit 133
 }}}

 I think in both cases the error is that the referenced shared library
 isn't available in a directory that is on the standard rpath (or in
 ${prefix}/lib supposing that path is added to the rpath in all MacPorts
 builds). Indeed, when I symlink
 ${prefix}/libexec/llvm-3.8/lib/lib{LTO,LLVM}.dylib into /usr/local/lib the
 errors disappear.

-- 
Ticket URL: <https://trac.macports.org/ticket/50853>
MacPorts <https://www.macports.org/>
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