编译内核出现以下错误
CC arch/x86/mm/mmio-mod.oLD arch/x86/mm/mmiotrace.oLD arch/x86/mm/built-in.oCC arch/x86/crypto/crc32c-intel.oLD arch/x86/crypto/built-in.oLDS arch/x86/vdso/vdso32/vdso32.ldsAS arch/x86/vdso/vdso32/note.oAS arch/x86/vdso/vdso32/int80.oVDSO arch/x86/vdso/vdso32-int80.so.dbggcc: error: elf_i386: No such file or directorymake[1]: *** [arch/x86/vdso/vdso32-int80.so.dbg] Error 1make: *** [arch/x86/vdso] Error 2
看一下gcc编译器版本：
#gcc -vUsing built-in specs.COLLECT_GCC=gccCOLLECT_LTO_WRAPPER=/usr/lib/gcc/i686-linux-gnu/4.6.1/lto-wrapperTarget: i686-linux-gnuConfigured 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-gnuThread model: posixgcc 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
解决方案：
找到对应的Makefile文件 比如上面错误中的arch/x86/vdso/Makefile
把-m elf_x86_64替换为-m64
把-m elf_i386替换为-m32
