Use official CAF CMake script.

FindCAF.cmake

@@ -0,0 +1,98 @@
+# Try to find CAF headers and library.
+#
+# Use this module as follows:
+#
+#     find_package(CAF)
+#
+# Variables used by this module (they can change the default behaviour and need
+# to be set before calling find_package):
+#
+#  CAF_ROOT_DIR  Set this variable either to an installation prefix or to wa
+#                CAF build directory where to look for the CAF libraries.
+#
+# Variables defined by this module:
+#
+#  CAF_FOUND              System has CAF headers and library
+#  CAF_LIBRARIES          List of library files  for all components
+#  CAF_INCLUDE_DIRS       List of include paths for all components
+#  CAF_LIBRARY_$C         Library file for component $C
+#  CAF_INCLUDE_DIR_$C     Include path for component $C
+
+# iterate over user-defined components
+foreach (comp ${CAF_FIND_COMPONENTS})
+  # we use uppercase letters only for variable names
+  string(TOUPPER "${comp}" UPPERCOMP)
+  if ("${comp}" STREQUAL "core")
+    set(HDRNAME "caf/all.hpp")
+  elseif ("${comp}" STREQUAL "test")
+    set(HDRNAME "caf/test/unit_test.hpp")
+  else ()
+    set(HDRNAME "caf/${comp}/all.hpp")
+  endif ()
+  if (CAF_ROOT_DIR)
+    set(header_hints
+        "${CAF_ROOT_DIR}/include"
+        "${CAF_ROOT_DIR}/../libcaf_${comp}")
+  endif ()
+  find_path(CAF_INCLUDE_DIR_${UPPERCOMP}
+            NAMES
+              ${HDRNAME}
+            HINTS
+              ${header_hints}
+              /usr/include
+              /usr/local/include
+              /opt/local/include
+              /sw/include
+              ${CMAKE_INSTALL_PREFIX}/include)
+  mark_as_advanced(CAF_INCLUDE_DIR_${UPPERCOMP})
+  if (NOT "${CAF_INCLUDE_DIR_${UPPERCOMP}}"
+      STREQUAL "CAF_INCLUDE_DIR_${UPPERCOMP}-NOTFOUND")
+    # mark as found (set back to false in case library cannot be found)
+    set(CAF_${comp}_FOUND true)
+    # add to CAF_INCLUDE_DIRS only if path isn't already set
+    set(duplicate false)
+    foreach (p ${CAF_INCLUDE_DIRS})
+      if (${p} STREQUAL ${CAF_INCLUDE_DIR_${UPPERCOMP}})
+        set(duplicate true)
+      endif ()
+    endforeach ()
+    if (NOT duplicate)
+      set(CAF_INCLUDE_DIRS ${CAF_INCLUDE_DIRS} ${CAF_INCLUDE_DIR_${UPPERCOMP}})
+    endif()
+    # look for (.dll|.so|.dylib) file, again giving hints for non-installed CAFs
+    # skip probe_event as it is header only
+    if (NOT ${comp} STREQUAL "probe_event" AND NOT ${comp} STREQUAL "test")
+      if (CAF_ROOT_DIR)
+        set(library_hints "${CAF_ROOT_DIR}/lib")
+      endif ()
+      find_library(CAF_LIBRARY_${UPPERCOMP}
+                   NAMES
+                     "caf_${comp}"
+                   HINTS
+                     ${library_hints}
+                     /usr/lib
+                     /usr/local/lib
+                     /opt/local/lib
+                     /sw/lib
+                     ${CMAKE_INSTALL_PREFIX}/lib)
+      mark_as_advanced(CAF_LIBRARY_${UPPERCOMP})
+      if ("${CAF_LIBRARY_${UPPERCOMP}}" STREQUAL "CAF_LIBRARY-NOTFOUND")
+        set(CAF_${comp}_FOUND false)
+      else ()
+        set(CAF_LIBRARIES ${CAF_LIBRARIES} ${CAF_LIBRARY_${UPPERCOMP}})
+      endif ()
+    endif ()
+  endif ()
+endforeach ()
+
+# let CMake check whether all requested components have been found
+include(FindPackageHandleStandardArgs)
+find_package_handle_standard_args(CAF
+                                  FOUND_VAR CAF_FOUND
+                                  REQUIRED_VARS CAF_LIBRARIES CAF_INCLUDE_DIRS
+                                  HANDLE_COMPONENTS)
+
+# final step to tell CMake we're done
+mark_as_advanced(CAF_ROOT_DIR
+                 CAF_LIBRARIES
+                 CAF_INCLUDE_DIRS)