compiling error when compile kgdb on ppc 74XX

[贾凤根]

     Hello, everyone:
     I am a novice in Linux. I am trying to build kernel 2.4.17 for ppc on i386 using ppc_74xx-gcc cross compiler.  And the version of GCC is 2.96. The configuration compiles fine when I exclude kernel hacking options. Once kgdb option of the kernel hacking options is included, kernel compilation fails with the following:
     arch/ppc/kernel/kernel.o: In function `getpacket':
     /home/my_work_directory/mykernel/kernel/arch/ppc/kernel/ppc-stub.c:352: undefined reference to `getDebugChar'
     /home/my_work_directory/mykernel/kernel/arch/ppc/kernel/ppc-stub.c:352: relocation truncated to fit: R_PPC_REL24 getDebugChar
     /home/my_work_directory/mykernel/kernel/arch/ppc/kernel/ppc-stub.c:361: undefined reference to `getDebugChar'
     /home/my_work_directory/mykernel/kernel/arch/ppc/kernel/ppc-stub.c:361: relocation truncated to fit: R_PPC_REL24 getDebugChar
     /home/my_work_directory/mykernel/kernel/arch/ppc/kernel/ppc-stub.c:375: undefined reference to `getDebugChar'
     /home/my_work_directory/mykernel/kernel/arch/ppc/kernel/ppc-stub.c:375: relocation truncated to fit: R_PPC_REL24 getDebugChar
     /home/my_work_directory/mykernel/kernel/arch/ppc/kernel/ppc-stub.c:376: undefined reference to `getDebugChar'
     /home/my_work_directory/mykernel/kernel/arch/ppc/kernel/ppc-stub.c:376: relocation truncated to fit: R_PPC_REL24 getDebugChar
     /home/my_work_directory/mykernel/kernel/arch/ppc/kernel/ppc-stub.c:378: undefined reference to `putDebugChar'
     /home/my_work_directory/mykernel/kernel/arch/ppc/kernel/ppc-stub.c:378: relocation truncated to fit: R_PPC_REL24 putDebugChar
     /home/my_work_directory/mykernel/kernel/arch/ppc/kernel/ppc-stub.c:380: undefined reference to `putDebugChar'
     /home/my_work_directory/mykernel/kernel/arch/ppc/kernel/ppc-stub.c:380: relocation truncated to fit: R_PPC_REL24 putDebugChar
     /home/my_work_directory/mykernel/kernel/arch/ppc/kernel/ppc-stub.c:383: undefined reference to `putDebugChar'
     /home/my_work_directory/mykernel/kernel/arch/ppc/kernel/ppc-stub.c:383: relocation truncated to fit: R_PPC_REL24 putDebugChar
     /home/my_work_directory/mykernel/kernel/arch/ppc/kernel/ppc-stub.c:384: undefined reference to `putDebugChar'
     /home/my_work_directory/mykernel/kernel/arch/ppc/kernel/ppc-stub.c:384: relocation truncated to fit: R_PPC_REL24 putDebugChar
     arch/ppc/kernel/kernel.o: In function `putpacket':
     /home/my_work_directory/mykernel/kernel/arch/ppc/kernel/ppc-stub.c:404: undefined reference to `putDebugChar'
     /home/my_work_directory/mykernel/kernel/arch/ppc/kernel/ppc-stub.c:404: relocation truncated to fit: R_PPC_REL24 putDebugChar
     arch/ppc/kernel/kernel.o:/home/my_work_directory/mykernel/kernel/arch/ppc/kernel/ppc-stub.c:409: more undefined references to `putDebugChar' follow
     arch/ppc/kernel/kernel.o: In function `putpacket':
     /home/my_work_directory/mykernel/kernel/arch/ppc/kernel/ppc-stub.c:409: relocation truncated to fit: R_PPC_REL24 putDebugChar
     /home/my_work_directory/mykernel/kernel/arch/ppc/kernel/ppc-stub.c:414: relocation truncated to fit: R_PPC_REL24 putDebugChar
     /home/my_work_directory/mykernel/kernel/arch/ppc/kernel/ppc-stub.c:415: relocation truncated to fit: R_PPC_REL24 putDebugChar
     /home/my_work_directory/mykernel/kernel/arch/ppc/kernel/ppc-stub.c:416: relocation truncated to fit: R_PPC_REL24 putDebugChar
     /home/my_work_directory/mykernel/kernel/arch/ppc/kernel/ppc-stub.c:417: undefined reference to `getDebugChar'
     /home/my_work_directory/mykernel/kernel/arch/ppc/kernel/ppc-stub.c:417: relocation truncated to fit: R_PPC_REL24 getDebugChar
     arch/ppc/kernel/kernel.o: In function `handle_exception':
     /home/my_work_directory/mykernel/kernel/arch/ppc/kernel/ppc-stub.c:602: undefined reference to `kgdb_interruptible'
     /home/my_work_directory/mykernel/kernel/arch/ppc/kernel/ppc-stub.c:602: relocation truncated to fit: R_PPC_REL24 kgdb_interruptible
     /home/my_work_directory/mykernel/kernel/arch/ppc/kernel/ppc-stub.c:794: undefined reference to `kgdb_interruptible'
     /home/my_work_directory/mykernel/kernel/arch/ppc/kernel/ppc-stub.c:794: relocation truncated to fit: R_PPC_REL24 kgdb_interruptible
     make: *** [vmlinux] Error 1

     Any suggestions?
     Thanks and regards.
                                                          Jiafenggen
                                                               2003-5-28

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