Fix build error with gcc-15.2.0(ubuntu-26.04).

Author: jfb8856606

example/Makefile

@@ -14,7 +14,7 @@ CFLAGS += -O0 -g -gdwarf-2 $(shell $(PKGCONF) --cflags libdpdk)
 
 LIBS+= $(shell $(PKGCONF) --static --libs libdpdk)
 LIBS+= -L${FF_PATH}/lib -Wl,--whole-archive,-lfstack,--no-whole-archive
-LIBS+= -Wl,--no-whole-archive -lrt -lm -ldl -lcrypto -pthread -lnuma
+LIBS+= -Wl,--no-whole-archive -lrt -lm -ldl -lcrypto -lz -pthread -lnuma
 
 TARGET="helloworld"