[...]

-- Performing Test HAVE_INT64_T
-- Performing Test HAVE_INT64_T - Success
-- Performing Test HAVE_UINT64_T
-- Performing Test HAVE_UINT64_T - Success
-- Performing Test HAVE_U_INT64_T
-- Performing Test HAVE_U_INT64_T - Success
-- Performing Test HAVE_CXX_ATOMICS_WITHOUT_LIB
-- Performing Test HAVE_CXX_ATOMICS_WITHOUT_LIB - Success
-- Performing Test HAVE_CXX_ATOMICS64_WITHOUT_LIB
-- Performing Test HAVE_CXX_ATOMICS64_WITHOUT_LIB - Success
-- Performing Test LLVM_HAS_ATOMICS
-- Performing Test LLVM_HAS_ATOMICS - Success
-- Performing Test SUPPORTS_NO_VARIADIC_MACROS_FLAG
-- Performing Test SUPPORTS_NO_VARIADIC_MACROS_FLAG - Success
-- Performing Test HAS_MAYBE_UNINITIALIZED
-- Performing Test HAS_MAYBE_UNINITIALIZED - Success
-- Target triple: x86_64-unknown-linux-gnu
-- Native target architecture is X86
-- Threads enabled.
-- Doxygen disabled.
-- Sphinx enabled.
-- Found Sphinx: /usr/bin/sphinx-build  
Terminated
ended at: Sat Jun  1 20:00:05 2019, done in 0:00:28.697194
error: No files produced.
+ chmod -R u+rwX /tmp/B.oaK1Dx/BUILD
+ rm -rf /tmp/B.oaK1Dx/tmp /tmp/B.oaK1Dx/BUILD
stat /tmp/B.oaK1Dx/BUILD/tmp: no such file or directory
-- Go bindings disabled, need at least Go 1.2.
-- Could NOT find OCaml (missing: OCAMLFIND OCAML_VERSION OCAML_STDLIB_PATH) 
-- Could NOT find OCaml (missing: OCAMLFIND OCAML_VERSION OCAML_STDLIB_PATH) 
-- OCaml bindings disabled.
-- Performing Test C_SUPPORTS_FPIC
CMake Error: CMAKE_C_COMPILER not set, after EnableLanguage
CMake Error at /usr/share/cmake/Modules/CheckCSourceCompiles.cmake:109 (try_compile):
  Failed to configure test project build system.
Call Stack (most recent call first):
  /usr/share/cmake/Modules/CheckCCompilerFlag.cmake:50 (CHECK_C_SOURCE_COMPILES)
  cmake/modules/HandleLLVMOptions.cmake:135 (check_c_compiler_flag)
  cmake/modules/HandleLLVMOptions.cmake:161 (add_flag_or_print_warning)
  CMakeLists.txt:468 (include)
-- Configuring incomplete, errors occurred!
rm: cannot remove '/tmp/B.oaK1Dx/BUILD/llvm-3.9.1.src': Directory not empty
+ rm -rf /tmp/B.oaK1Dx
Begin-TLD-Builder-Info
Build-Time: user:4.52s sys:2.54s real:30.43s (faults io:0 non-io:81822)
End-TLD-Builder-Info