1 files changed, 68 insertions, 0 deletions
diff --git a/rc3/runtime/cmake/LibompCheckLinkerFlag.cmake b/rc3/runtime/cmake/LibompCheckLinkerFlag.cmake
new file mode 100644
index 0000000..75a38e3
--- /dev/null
+++ b/rc3/runtime/cmake/LibompCheckLinkerFlag.cmake
@@ -0,0 +1,68 @@
+#
+#//===----------------------------------------------------------------------===//
+#//
+#//                     The LLVM Compiler Infrastructure
+#//
+#// This file is dual licensed under the MIT and the University of Illinois Open
+#// Source Licenses. See LICENSE.txt for details.
+#//
+#//===----------------------------------------------------------------------===//
+#
+
+# Checking a linker flag to build a shared library
+# There is no real trivial way to do this in CMake, so we implement it here
+# this will have ${boolean} = TRUE if the flag succeeds, otherwise FALSE.
+function(libomp_check_linker_flag flag boolean)
+  if(NOT DEFINED "${boolean}")
+  set(retval TRUE)
+  set(library_source
+    "int foo(int a) { return a*a; }")
+  set(cmake_source
+    "cmake_minimum_required(VERSION 2.8)
+     project(foo C)
+     set(CMAKE_SHARED_LINKER_FLAGS \"${flag}\")
+     add_library(foo SHARED src_to_link.c)")
+  set(failed_regexes "[Ee]rror;[Uu]nknown;[Ss]kipping;LINK : warning")
+  set(base_dir ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/link_flag_check_${boolean})
+  file(MAKE_DIRECTORY ${base_dir})
+  file(MAKE_DIRECTORY ${base_dir}/build)
+  file(WRITE ${base_dir}/src_to_link.c "${library_source}")
+  file(WRITE ${base_dir}/CMakeLists.txt "${cmake_source}")
+
+  message(STATUS "Performing Test ${boolean}")
+  try_compile(
+    try_compile_result
+    ${base_dir}/build
+    ${base_dir}
+    foo
+    OUTPUT_VARIABLE OUTPUT)
+
+  if(try_compile_result)
+    foreach(regex IN LISTS failed_regexes)
+      if("${OUTPUT}" MATCHES ${regex})
+        set(retval FALSE)
+      endif()
+    endforeach()
+  else()
+    set(retval FALSE)
+  endif()
+
+  if(${retval})
+    set(${boolean} 1 CACHE INTERNAL "Test ${boolean}")
+    message(STATUS "Performing Test ${boolean} - Success")
+    file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log
+      "Performing C Linker Flag test ${boolean} succeeded with the following output:\n"
+      "${OUTPUT}\n"
+      "Source file was:\n${library_source}\n")
+  else()
+    set(${boolean} "" CACHE INTERNAL "Test ${boolean}")
+    message(STATUS "Performing Test ${boolean} - Failed")
+    file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log
+      "Performing C Linker Flag test ${boolean} failed with the following output:\n"
+      "${OUTPUT}\n"
+      "Source file was:\n${library_source}\n")
+  endif()
+
+  set(${boolean} ${retval} PARENT_SCOPE)
+  endif()
+endfunction()