Merge branch 'fixg3ligBuild' into 'master'

BUG: Check DbgHelp library only on windows

See merge request iMSTK/iMSTK!266

CMake/Findg3log.cmake

@@ -3,13 +3,12 @@
 #-----------------------------------------------------------------------------
 if(WIN32)
   find_library(DbgHelp_LIBRARY NAMES DbgHelp)
+  
+  if(NOT DbgHelp_LIBRARY)
+    message(FATAL_ERROR "DbgHelp library not found")
+  endif()
 endif()
 
-if(NOT DbgHelp_LIBRARY)
-  message(FATAL_ERROR "DbgHelp library not found")
-endif()
-
-
 #-----------------------------------------------------------------------------
 # Find path
 #-----------------------------------------------------------------------------