Add Findrados.cmake (#539)

Update Findrados.cmake

Findrados.cmake

@@ -0,0 +1,61 @@
+# Copyright (c) 2017 MohamedGhaith.Kaabi@gmail.com
+
+# - Try to find the Rados library
+# Once done this will define
+#
+#  RADOS_ROOT - Set this variable to the root installation
+#
+# Read-Only variables:
+#  RADOS_FOUND - system has the Rados library
+#  RADOS_INCLUDE_DIR - the Rados include directory
+#  RADOS_LIBRARIES - The libraries needed to use Rados
+#  RADOS_VERSION - This is set to $major.$minor.$patch (eg. 0.9.8)
+
+include(FindPackageHandleStandardArgs)
+
+if(rados_FIND_REQUIRED)
+  set(_RADOS_output_type FATAL_ERROR)
+else()
+  set(_RADOS_output_type STATUS)
+endif()
+
+if(rados_FIND_QUIETLY)
+  set(_RADOS_output)
+else()
+  set(_RADOS_output 1)
+endif()
+
+find_path(_RADOS_INCLUDE_DIR rados/librados.hpp
+  HINTS ${CMAKE_SOURCE_DIR}/../../.. $ENV{RADOS_ROOT} ${RADOS_ROOT}
+  PATH_SUFFIXES include
+  PATHS /usr /usr/local /opt /opt/local)
+
+find_library(RADOS_LIBRARY rados
+  HINTS ${CMAKE_SOURCE_DIR}/../../.. $ENV{RADOS_ROOT} ${RADOS_ROOT}
+  PATH_SUFFIXES lib lib64
+  PATHS /usr /usr/local /opt /opt/local)
+
+if(rados_FIND_REQUIRED)
+  if(RADOS_LIBRARY MATCHES "RADOS_LIBRARY-NOTFOUND")
+    message(FATAL_ERROR "Missing the rados library.\n"
+      "Consider using CMAKE_PREFIX_PATH or the RADOS_ROOT environment variable. "
+      "See the ${CMAKE_CURRENT_LIST_FILE} for more details.")
+  endif()
+endif()
+find_package_handle_standard_args(rados DEFAULT_MSG
+                                  RADOS_LIBRARY _RADOS_INCLUDE_DIR)
+
+if(_RADOS_EPIC_FAIL)
+  set(RADOS_FOUND FALSE)
+  set(RADOS_LIBRARY)
+  set(_RADOS_INCLUDE_DIR)
+  set(RADOS_INCLUDE_DIRS)
+  set(RADOS_LIBRARIES)
+else()
+  set(RADOS_INCLUDE_DIRS ${_RADOS_INCLUDE_DIR})
+  set(RADOS_LIBRARIES ${RADOS_LIBRARY})
+  if(_RADOS_output)
+    message(STATUS
+      "Found rados in ${RADOS_INCLUDE_DIRS};${RADOS_LIBRARIES}")
+  endif()
+endif()