Fix from related FreeBSD bug: https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=274109
lld gets upset with certain non-existent symbols

Remade as original patch for openjdk 11 doesn't work with 17 or 21

Same issue also found in bug #922147
diff --git a/make/hotspot/lib/JvmMapfile.gmk b/make/hotspot/lib/JvmMapfile.gmk
index 2808ac2af03..bdf7515eb02 100644
--- a/make/hotspot/lib/JvmMapfile.gmk
+++ b/make/hotspot/lib/JvmMapfile.gmk
@@ -53,7 +53,7 @@ endif
 # platform dependent.
 
 ifeq ($(call isTargetOs, linux), true)
-  DUMP_SYMBOLS_CMD := $(NM) $(NMFLAGS) --defined-only *$(OBJ_SUFFIX)
+  DUMP_SYMBOLS_CMD := $(NM) $(NMFLAGS) --defined-only --extern-only *$(OBJ_SUFFIX)
   ifneq ($(FILTER_SYMBOLS_PATTERN), )
     FILTER_SYMBOLS_PATTERN := $(FILTER_SYMBOLS_PATTERN)|
   endif