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extern/cmake/2.85/share/cmake-2.8/Modules/TestCXXAcceptsFlag.cmake

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+# - Test CXX compiler for a flag
+# Check if the CXX compiler accepts a flag
+#
+#  Macro CHECK_CXX_ACCEPTS_FLAG(FLAGS VARIABLE) -
+#     checks if the function exists
+#  FLAGS - the flags to try
+#  VARIABLE - variable to store the result
+#
+
+#=============================================================================
+# Copyright 2002-2009 Kitware, Inc.
+#
+# Distributed under the OSI-approved BSD License (the "License");
+# see accompanying file Copyright.txt for details.
+#
+# This software is distributed WITHOUT ANY WARRANTY; without even the
+# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+# See the License for more information.
+#=============================================================================
+# (To distribute this file outside of CMake, substitute the full
+#  License text for the above reference.)
+
+MACRO(CHECK_CXX_ACCEPTS_FLAG FLAGS  VARIABLE)
+  IF(NOT DEFINED ${VARIABLE})
+    MESSAGE(STATUS "Checking to see if CXX compiler accepts flag ${FLAGS}")
+    TRY_COMPILE(${VARIABLE}
+      ${CMAKE_BINARY_DIR}
+      ${CMAKE_ROOT}/Modules/DummyCXXFile.cxx
+      CMAKE_FLAGS -DCOMPILE_DEFINITIONS:STRING=${FLAGS}
+      OUTPUT_VARIABLE OUTPUT) 
+    IF(${VARIABLE})
+      MESSAGE(STATUS "Checking to see if CXX compiler accepts flag ${FLAGS} - yes")
+      FILE(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log
+        "Determining if the CXX compiler accepts the flag ${FLAGS} passed with "
+        "the following output:\n${OUTPUT}\n\n")
+    ELSE(${VARIABLE})
+      MESSAGE(STATUS "Checking to see if CXX compiler accepts flag ${FLAGS} - no")
+      FILE(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log
+        "Determining if the CXX compiler accepts the flag ${FLAGS} failed with "
+        "the following output:\n${OUTPUT}\n\n")
+    ENDIF(${VARIABLE})
+  ENDIF(NOT DEFINED ${VARIABLE})
+ENDMACRO(CHECK_CXX_ACCEPTS_FLAG)