Research for software if we search for COMPONENTS.

Otherwise we will never search for e.g. Boost multiple
times and the upmost module in the hierarchy will dictate
the components to be used. That does not work for downstream
modules.

Therefore with this change we check whether there is an argument
COMPONENTS passed to find_package and make sure there will be
another call to it if that is the case.

cmake/Modules/OpmFind.cmake

@@ -139,6 +139,12 @@ macro (find_and_append_package_to prefix name)
 	set (${name}_FOUND FALSE)
 	set (${NAME}_FOUND FALSE)
   else ()
+    # List of components might differ for every module. Therefore we will
+    # need to research for a library multiple times. _search_components
+    # will hold the index of the string COMPONENTS in the list
+    set(_ARGN_LIST ${ARGN}) # Create a real list to use with list commands
+    list(FIND _ARGN_LIST "COMPONENTS" _search_components)
+
     # using config mode is better than using module (aka. find) mode
     # because then the package has already done all its probes and
     # stored them in the config file for us
@@ -147,7 +153,8 @@ macro (find_and_append_package_to prefix name)
     # We even need to repeat the search for opm-common once as this is done
     # in the top most CMakeLists.txt without querying defines, setting dependencies
     # and the likes which is only done via opm_find_package
-    if (NOT DEFINED ${name}_FOUND AND NOT DEFINED ${NAME}_FOUND)
+    if ( (NOT DEFINED ${name}_FOUND AND NOT DEFINED ${NAME}_FOUND )
+         OR _search_components GREATER -1)
       string(REGEX MATCH "(dune|opm)-.*" _is_opm ${name})
       if(NOT _is_opm)
         string(REGEX MATCH "ewoms" _is_opm ${name})