From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Message-Id: <200201072201.RAA05808@missioncriticallinux.com> From: mod+linuxppc-dev@MissionCriticalLinux.com To: linuxppc-dev@lists.linuxppc.org Subject: Link-time failures from "simple" CFLAGS changes Date: Mon, 07 Jan 2002 17:01:51 -0500 Sender: owner-linuxppc-dev@lists.linuxppc.org List-Id: When I change -O2 to -O0 in my CFLAGS definition in Makefile thus: CFLAGS := -g $(CPPFLAGS) -Wall -Wstrict-prototypes -Wno-trigraphs -O0 \ -fno-strict-aliasing -fno-common CFLAGS := -g $(CPPFLAGS) -Wall -Wstrict-prototypes -Wno-trigraphs -O2 \ -fno-strict-aliasing -fno-common ...I am astounded to see thousands of unresolved references at kernel link time. WTF? Any ideas? These are the sorts of symbols that come up undefined: after __bad_udelay before between clear_user copy_from_user copy_siginfo copy_to_user dcacheFlushSingle dcacheInvalidateSingle dev_load down down_interruptible down_trylock DQUOT_ALLOC_BLOCK DQUOT_FREE_BLOCK DQUOT_PREALLOC_BLOCK eieio empty_stack fib_find_info fn_flush_list fn_key_eq fn_key_leq frag_alloc_queue frag_free_queue frag_kfree_skb free_pgd_fast free_pgd_slow get_native_tbl get_order get_pgd_fast get_rtcl get_tbl get_tbu __get_user_bad htonl htons in_8 inet_getid inet_putpeer in_le16 in_le32 ipc_buildid ipc_checkid ipc_get ipc_lock ipc_lockall ipc_unlock ipc_unlockall ld_le32 maybe_unmark_and_push ntohl ntohs out_8 out_be32 out_le16 out_le32 pcibios_make_OF_bus_map pcibios_set_master phys_to_virt pmd_populate pop_stack prefetch prefetchw pte_free_slow __put_user_bad rotate_left rtnetlink_rcv_skb SBI __skb_cb_too_small_for_tcp sockfd_put socki_lookup strncpy_from_user strnlen_user tb_ticks_since tcpdiag_rcv_skb tcp_need_reset tcp_paws_discard tcp_replace_ts_recent tcp_store_ts_recent __udelay unix_get_socket unix_release_addr up __USE_RTC verify_area virt_to_bus virt_to_phys __xchg_called_with_bad_pointer xprt_move_iov This isn't a showstopper problem for me but I was so surprised to see it that I'm curious about its cause, so thanks for any enlightenment. ** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/