编译内核，出现gcc: error: elf_i386: No such file or directory

  CC      arch/x86/mm/mmio-mod.o
  LD      arch/x86/mm/mmiotrace.o
  LD      arch/x86/mm/built-in.o
  CC      arch/x86/crypto/crc32c-intel.o
  LD      arch/x86/crypto/built-in.o
  LDS     arch/x86/vdso/vdso32/vdso32.lds
  AS      arch/x86/vdso/vdso32/note.o
  AS      arch/x86/vdso/vdso32/int80.o
  VDSO    arch/x86/vdso/vdso32-int80.so.dbg
gcc: error: elf_i386: No such file or directory
make[1]: *** [arch/x86/vdso/vdso32-int80.so.dbg] Error 1
make: *** [arch/x86/vdso] Error 2
chenyu@chenyu-virtual-machine:~/chenyu/linux-2.6.30.9$

 

编译内核出现上述错误，

看一下gcc编译器版本：

chenyu@chenyu-virtual-machine:~$ gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/i686-linux-gnu/4.6.1/lto-wrapper
Target: i686-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Ubuntu/Linaro 4.6.1-9ubuntu3' --with-bugurl=file:///usr/share/doc/gcc-4.6/README.Bugs --enable-languages=c,c++,fortran,objc,obj-c++,go --prefix=/usr --program-suffix=-4.6 --enable-shared --enable-linker-build-id --with-system-zlib --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --with-gxx-include-dir=/usr/include/c++/4.6 --libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-plugin --enable-objc-gc --enable-targets=all --disable-werror --with-arch-32=i686 --with-tune=generic --enable-checking=release --build=i686-linux-gnu --host=i686-linux-gnu --target=i686-linux-gnu
Thread model: posix
gcc version 4.6.1 (Ubuntu/Linaro 4.6.1-9ubuntu3)

编译器是gcc-4.6.1的，编译器版本太高，对于gcc 4.6它 不再支持 linker-style 架构（网上是这么说的）

修改：
1.在内核目录arch/x86/vdso/Makefile中，大约在28,29行 找到 VDSO_LDFLAGS_vdso.lds = -m elf_x86_64 -Wl,-soname=linux-vdso.so.1 \   -Wl,-z,max-page-size=4096 -Wl,-z,common-page-size=4096 把"-m elf_x86_64" 替换为 "-m64"

2然后再继续找，大约在72行左右，找到VDSO_LDFLAGS_vdso32.lds = -m elf_i386 -Wl,-soname=linux-gate.so.1中的 "-m elf_i386" 替换为 "-m32"

然后继续编译，就额可以了，by chenyu