MAJ option LINKER pour les pb de doublon link avec OpenGL sous MAC

Utilities/FLTK/src/CMakeLists.txt

@@ -160,6 +160,13 @@ SET(CFILES
   vsnprintf.c
   )
 
+# To suppress "ld: cycle in dylib re-exports with /usr/X11R6/lib/libGL.dylib" error on APPLE and SHARED configuration 
+IF(APPLE AND BUILD_SHARED_LIBS)
+      FOREACH(c "" "_DEBUG" "_RELEASE" "_MINSIZEREL" "_RELWITHDEBINFO")
+        SET(CMAKE_SHARED_LINKER_FLAGS${c} "${CMAKE_SHARED_LINKER_FLAGS${c}} -Wl,-dylib_file,/System/Library/Frameworks/OpenGL.framework/Versions/A/Libraries/libGL.dylib:/System/Library/Frameworks/OpenGL.framework/Versions/A/Libraries/libGL.dylib")
+      ENDFOREACH(c)
+ENDIF(APPLE AND BUILD_SHARED_LIBS)
+
 ADD_LIBRARY(fltk ${CPPFILES} ${CFILES})
 INSTALL(TARGETS fltk
         RUNTIME DESTINATION ${OTB_INSTALL_BIN_DIR} COMPONENT RuntimeLibraries