Build fixes for modern versions of binutils.

Need to explicitly list DSOs.

CMakeLists.txt

@@ -226,6 +226,9 @@ if(UNIX AND NOT APPLE)
   if(X11_Xcursor_FOUND)
     set(FLTK_LIBRARIES ${FLTK_LIBRARIES} ${X11_Xcursor_LIB})
   endif()
+  if(X11_Xrender_FOUND)
+    set(FLTK_LIBRARIES ${FLTK_LIBRARIES} ${X11_Xrender_LIB})
+  endif()
 endif()
 
 if(FLTK_FOUND)

cmake/StaticBuild.cmake

@@ -75,12 +75,12 @@ if(BUILD_STATIC)
     elseif(APPLE)
       set(FLTK_LIBRARIES "${FLTK_LIBRARIES} -framework Cocoa")
     else()
-      set(FLTK_LIBRARIES "${FLTK_LIBRARIES} -lm")
+      set(FLTK_LIBRARIES "${FLTK_LIBRARIES} -lm -ldl")
     endif()
 
     if(X11_FOUND AND NOT APPLE)
       if(${CMAKE_SYSTEM_NAME} MATCHES "SunOS")
-        set(FLTK_LIBRARIES "${FLTK_LIBRARIES} ${X11_Xcursor_LIB} ${X11_Xfixes_LIB} -Wl,-Bstatic -lXft -Wl,-Bdynamic -lfontconfig -lXext -R/usr/sfw/lib")
+        set(FLTK_LIBRARIES "${FLTK_LIBRARIES} ${X11_Xcursor_LIB} ${X11_Xfixes_LIB} -Wl,-Bstatic -lXft -Wl,-Bdynamic -lfontconfig -lXrender -lXext -R/usr/sfw/lib -L=/usr/sfw/lib -lfreetype -lsocket -lnsl")
       else()
         set(FLTK_LIBRARIES "${FLTK_LIBRARIES} -Wl,-Bstatic -lXcursor -lXfixes -lXft -lfontconfig -lexpat -lfreetype -lbz2 -lXrender -lXext -lXinerama -Wl,-Bdynamic")
       endif()