Add components-aware FindLibcaf script for CMake

cmake/FindLibcaf.cmake

@@ -0,0 +1,65 @@
+# - Try to find user-defined components of libcaf
+# Once done this will define
+#
+#  LIBCAF_INCLUDE_DIRS - include directories for all found components
+#  LIBCAF_LIBRARY_$C   - library for component $C
+#  LIBCAF_FOUND        - system has libcaf
+#  LIBCAF_INCLUDE_DIRS - libcaf include dir
+#  LIBCAF_LIBRARIES    - link againgst libcaf
+#  LIBCAF_VERSION      - version in {major}.{minor}.{patch} format
+
+foreach (comp ${Libcaf_FIND_COMPONENTS})
+  string(TOUPPER "${comp}" UPPERCOMP)
+  if ("${comp}" STREQUAL "core")
+    set(HDRNAME "caf/all.hpp")
+  else ()
+    set(HDRNAME "caf/${comp}/all.hpp")
+  endif ()
+  message(STATUS "Search for libcaf_${comp} and ${HDRNAME}")
+  set(HDRHINT "actor-framework/libcaf_${comp}")
+  unset(LIBCAF_INCLUDE_DIR)
+  find_path(LIBCAF_INCLUDE_DIR_${UPPERCOMP}
+            NAMES
+              ${HDRNAME}
+            HINTS
+              ${LIBCAF_ROOT_DIR}/include
+              /usr/include
+              /usr/local/include
+              /opt/local/include
+              /sw/include
+              ${CMAKE_INSTALL_PREFIX}/include
+              ../${HDRHINT}
+              ../../${HDRHINT}
+              ../../../${HDRHINT})
+  mark_as_advanced(LIBCAF_INCLUDE_DIR_${UPPERCOMP})
+  if ("${LIBCAF_INCLUDE_DIR_${UPPERCOMP}}" STREQUAL "LIBCAF_INCLUDE_DIR_${UPPERCOMP}-NOTFOUND")
+    break ()
+  else ()
+    message(STATUS "Found headers for ${HDRNAME}")
+  endif ()
+  find_library(LIBCAF_LIBRARY_${UPPERCOMP}
+               NAMES
+                 "caf_${comp}"
+               HINTS
+                 ${LIBCAF_ROOT_DIR}/lib
+                 /usr/lib
+                 /usr/local/lib
+                 /opt/local/lib
+                 /sw/lib
+                 ${CMAKE_INSTALL_PREFIX}/lib
+                 ../actor-framework/build/lib
+                 ../../actor-framework/build/lib
+                 ../../../actor-framework/build/lib)
+  mark_as_advanced(LIBCAF_LIBRARY_${UPPERCOMP})
+  if ("${LIBCAF_LIBRARY_${UPPERCOMP}}" STREQUAL "LIBCAF_LIBRARY-NOTFOUND")
+    break ()
+  else ()
+    message(STATUS "Found lib: ${LIBCAF_LIBRARY_${UPPERCOMP}}")
+  endif ()
+endforeach ()
+
+include(FindPackageHandleStandardArgs)
+
+mark_as_advanced(
+  LIBCAF_ROOT_DIR
+  LIBCAF_INCLUDE_DIRS)