[libomptarget] Build all libraries in libomptarget/

In standalone build, plugins where previously built in their
subdirectory in plugins/ and tests couldn't find them.

Differential Revision: https://reviews.llvm.org/D39920

llvm-svn: 317979

openmp/libomptarget/CMakeLists.txt

@@ -35,6 +35,9 @@ if(${LIBOMPTARGET_STANDALONE_BUILD})
   endif()
   set(LIBOMPTARGET_LIBDIR_SUFFIX "" CACHE STRING
     "suffix of lib installation directory, e.g. 64 => lib64")
+
+  # Build all libraries into a common place so that tests can find them.
+  set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
 else()
   set(LIBOMPTARGET_ENABLE_WERROR ${LLVM_ENABLE_WERROR})
   # If building in tree, we honor the same install suffix LLVM uses.