Fixed CMake issues regarding CSM

cmake_modules/Findcsm.cmake

@@ -46,8 +46,8 @@ macro(csm_report_not_found REASON_MSG)
   # Note <package>_FIND_[REQUIRED/QUIETLY] variables defined by
   # FindPackage() use the camelcase library name, not uppercase.
   if (csm_FIND_QUIETLY)
-    message(STATUS "Failed to find csm- " ${REASON_MSG} ${ARGN})
-  else (csm_FIND_REQUIRED)
+    message(STATUS "Ignoring csm dependency - " ${REASON_MSG} ${ARGN})
+  elseif(csm_FIND_REQUIRED)
     message(FATAL_ERROR "Failed to find csm - " ${REASON_MSG} ${ARGN})
   else()
     # Neither QUIETLY nor REQUIRED, use SEND_ERROR which emits an error

src/CMakeLists.txt

@@ -73,7 +73,9 @@ SET(SRCS
   ENDIF(csm_FOUND)
 # create the shared library
 ADD_LIBRARY(${PROJECT_NAME} SHARED ${SRCS})
-target_link_libraries(${PROJECT_NAME} ${csm_LIBRARY})
+IF(csm_FOUND)
+  target_link_libraries(${PROJECT_NAME} ${csm_LIBRARY})
+ENDIF(csm_FOUND)
 
 #install library
 INSTALL(TARGETS ${PROJECT_NAME}