Revert "[Offload][NFCI] Remove coupling to omp target for version scripting (llvm#141637)"

breaks offload build

ld.lld: error: relocation R_X86_64_PC32 cannot be used against symbol 'ffi_type_float'; recompile with -fPIC
>>> defined in /usr/lib/x86_64-linux-gnu/libffi.a(types.o)

This reverts commit 20f9f1f.

Author: ronlieb

offload/CMakeLists.txt

@@ -350,6 +350,14 @@ else()
 endif()
 endmacro()
 
+if(OPENMP_STANDALONE_BUILD OR TARGET omp)
+  # Check LIBOMP_HAVE_VERSION_SCRIPT_FLAG
+  include(LLVMCheckCompilerLinkerFlag)
+  if(NOT APPLE)
+    llvm_check_compiler_linker_flag(C "-Wl,--version-script=${CMAKE_CURRENT_LIST_DIR}/../openmp/runtime/src/exports_test_so.txt" LIBOMP_HAVE_VERSION_SCRIPT_FLAG)
+  endif()
+endif()
+
 # OMPT support for libomptarget
 # Follow host OMPT support and check if host support has been requested.
 # LIBOMP_HAVE_OMPT_SUPPORT indicates whether host OMPT support has been implemented.

offload/liboffload/CMakeLists.txt

@@ -14,8 +14,8 @@ foreach(plugin IN LISTS LIBOMPTARGET_PLUGINS_TO_BUILD)
     target_link_libraries(LLVMOffload PRIVATE omptarget.rtl.${plugin})
 endforeach()
 
-if(LLVM_HAVE_LINK_VERSION_SCRIPT)
-  target_link_libraries(LLVMOffload PRIVATE "-Wl,--version-script=${CMAKE_CURRENT_SOURCE_DIR}/exports")
+if(LIBOMP_HAVE_VERSION_SCRIPT_FLAG)
+    target_link_libraries(LLVMOffload PRIVATE "-Wl,--version-script=${CMAKE_CURRENT_SOURCE_DIR}/exports")
 endif()
 
 target_include_directories(LLVMOffload PUBLIC

offload/libomptarget/CMakeLists.txt

@@ -46,8 +46,9 @@ target_include_directories(omptarget PRIVATE
   ${LIBOMPTARGET_INCLUDE_DIR} ${LIBOMPTARGET_BINARY_INCLUDE_DIR}
 )
 
-if(LLVM_HAVE_LINK_VERSION_SCRIPT)
-  target_link_libraries(omptarget PRIVATE "-Wl,--version-script=${CMAKE_CURRENT_SOURCE_DIR}/exports")
+if (LIBOMP_HAVE_VERSION_SCRIPT_FLAG)
+  target_link_libraries(omptarget PRIVATE
+    "-Wl,--version-script=${CMAKE_CURRENT_SOURCE_DIR}/exports")
 endif()
 
 # Don't override an externally defined RPATH