更换Ubuntu 14.04内核时，遇到的一些错误及解决办法

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PROBLEM:-1

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gcc: error: elf_i386: No such file or directory

OBJCOPY arch/x86/vdso/vdso32-int80.so

objcopy: 'arch/x86/vdso/vdso32-int80.so.dbg': No such file

make[2]: *** [arch/x86/vdso/vdso32-int80.so] Error 1

make[1]: *** [arch/x86/vdso] Error 2

make: *** [arch/x86] Error 2

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SOLUTION:

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The problem is that gcc 4.6 doesn't support anymore linker-style architecture options.

Apply the following changes to solve the problem :

In arch/x86/vdso/Makefile :

replace "-m elf_x86_64" by "-m64" on the line starting with VDSO_LDFLAGS_vdso.lds

replace "-m elf_i386" by "-m32" on the line starting with VDSO_LDFLAGS_vdso32.lds

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PROBLEM:-2

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In file included from drivers/net/igbvf/ethtool.c:36:0:

drivers/net/igbvf/igbvf.h: At top level:

drivers/net/igbvf/igbvf.h:129:15: error: duplicate member 'page'

make[3]: *** [drivers/net/igbvf/ethtool.o] Error 1

make[2]: *** [drivers/net/igbvf] Error 2

make[1]: *** [drivers/net] Error 2

make: *** [drivers] Error 2

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SOLUTION:

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struct igbvf_buffer {

dma_addr_t dma;

struct sk_buff *skb;`enter code here`

union {

/* Tx */

struct {

unsigned long time_stamp;

u16 length;

u16 next_to_watch;

u16 mapped_as_page;

};

/* Rx */

struct {

struct page *page; <--------------- No 1

u64 page_dma;

unsigned int page_offset;

};

};

struct page *page; <------------ No 2

};

Hmm conflict of a member with a transparent union.

Maybe older gccs didn't catch that. But it looks very broken

Comment second pointer.

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PROBLEM 3: Similar to Problem-2

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In file included from drivers/scsi/pmcraid.c:57:0:

drivers/scsi/pmcraid.h: At top level:

drivers/scsi/pmcraid.h:601:8: error: duplicate member 'sense_buffer'

drivers/scsi/pmcraid.c: In function 'pmcraid_abort_cmd':

drivers/scsi/pmcraid.c:2940:33: warning: variable 'res' set but not used [-Wunused-but-set-variable]

drivers/scsi/pmcraid.c: In function 'pmcraid_ioctl_passthrough':

drivers/scsi/pmcraid.c:3745:5: warning: variable 'access' set but not used [-Wunused-but-set-variable]

drivers/scsi/pmcraid.c: In function 'pmcraid_check_ioctl_buffer':

drivers/scsi/pmcraid.c:4052:6: warning: variable 'access' set but not used [-Wunused-but-set-variable]

make[3]: *** [drivers/scsi/pmcraid.o] Error 1

make[2]: *** [drivers/scsi] Error 2

make[1]: *** [drivers] Error 2

make[1]: Leaving directory `/home/ashish/litmus-rt'

make: *** [debian/stamp/build/kernel] Error 2

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SOLUTION:

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Comment drivers/scsi/pmcraid.h:571

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