家里有一台cotext-A9(armv7-a) 的盒子，现在不用了，
一直想着废物利用。于是想怎么为这盒子编译程序。
目标机器：
root@routon-h1:/# uname -aLinux routon-h1 2.6.34 #3 SMP Mon Oct 29 19:01:06 CST armv7l GNU/Linux
装了一台 ubuntu 10.04 X86 的虚拟机
root@ubuntu:~# uname -aLinux ubuntu 2.6.32-38-generic #83-Ubuntu SMP Wed Jan 4 11:13:04 UTC i686 GNU/Linuxroot@ubuntu:~# lsb_release -aNo LSB modules are available.Distributor ID: UbuntuDescription: Ubuntu 10.04.4 LTSRelease: 10.04Codename: lucid
安装过程：
apt-get install python-software-propertiesadd-apt-repository ppa:linaro-maintainers/toolchainapt-get install gcc-4.4-arm-linux-gnueabi
apt-get install g++-4.4-arm-linux-gnueabi
测试代码：
#include <stdio.h>main(){printf("Hello World\n");}
编译过程：
root@ubuntu:~# arm-linux-gnueabi-gcc-4.4 -v hello.cUsing built-in specs.Target: arm-linux-gnueabiConfigured with: ../src/configure -v --with-pkgversion='Ubuntu/Linaro 4.4.6-3ubuntu1~ppa3' --with-bugurl=file:///usr/share/doc/gcc-4.4/README.Bugs --enable-languages=c,c++,fortran,objc,obj-c++ --prefix=/usr --program-suffix=-4.4 --enable-shared --enable-multiarch --enable-linker-build-id --with-system-zlib --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --with-gxx-include-dir=/usr/arm-linux-gnueabi/include/c++/4.4.6 --libdir=/usr/lib --enable-nls --enable-clocale=gnu --enable-libstdcxx-debug --enable-objc-gc --disable-sjlj-exceptions --with-arch=armv7-a --with-float=softfp --with-fpu=vfpv3-d16 --with-mode=thumb --disable-werror --enable-checking=release --program-prefix=arm-linux-gnueabi- --includedir=/usr/arm-linux-gnueabi/include --build=i486-linux-gnu --host=i486-linux-gnu --target=arm-linux-gnueabi --with-headers=/usr/arm-linux-gnueabi/include --with-libs=/usr/arm-linux-gnueabi/libThread model: posixgcc version 4.4.6 (Ubuntu/Linaro 4.4.6-3ubuntu1~ppa3)COLLECT_GCC_OPTIONS='-v' '-march=armv7-a' '-mfloat-abi=softfp' '-mfpu=vfpv3-d16' '-mthumb'/usr/lib/gcc/arm-linux-gnueabi/4.4.6/cc1 -quiet -v hello.c -quiet -dumpbase hello.c -march=armv7-a -mfloat-abi=softfp -mfpu=vfpv3-d16 -mthumb -auxbase hello -version -o /tmp/ccKJdMkG.signoring duplicate directory "/usr/lib/gcc/arm-linux-gnueabi/4.4.6/../../../../arm-linux-gnueabi/include"#include "..." search starts here:#include <...> search starts here:/usr/lib/gcc/arm-linux-gnueabi/4.4.6/include/usr/lib/gcc/arm-linux-gnueabi/4.4.6/include-fixed/usr/arm-linux-gnueabi/includeEnd of search list.GNU C (Ubuntu/Linaro 4.4.6-3ubuntu1~ppa3) version 4.4.6 (arm-linux-gnueabi)compiled by GNU C version 4.4.3, GMP version 4.3.2, MPFR version 2.4.2-p1.GGC heuristics: --param ggc-min-expand=98 --param ggc-min-heapsize=128244Compiler executable checksum: d8b1c137400b627d969f13ef7d115d11COLLECT_GCC_OPTIONS='-v' '-march=armv7-a' '-mfloat-abi=softfp' '-mfpu=vfpv3-d16' '-mthumb'/usr/lib/gcc/arm-linux-gnueabi/4.4.6/../../../../arm-linux-gnueabi/bin/as -march=armv7-a -mfloat-abi=softfp -mfpu=vfpv3-d16 -mimplicit-it=thumb -meabi=5 -o /tmp/ccEJ19An.o /tmp/ccKJdMkG.sCOMPILER_PATH=/usr/lib/gcc/arm-linux-gnueabi/4.4.6/:/usr/lib/gcc/arm-linux-gnueabi/4.4.6/:/usr/lib/gcc/arm-linux-gnueabi/:/usr/lib/gcc/arm-linux-gnueabi/4.4.6/:/usr/lib/gcc/arm-linux-gnueabi/:/usr/lib/gcc/arm-linux-gnueabi/4.4.6/../../../../arm-linux-gnueabi/bin/LIBRARY_PATH=/usr/lib/gcc/arm-linux-gnueabi/4.4.6/:/usr/lib/gcc/arm-linux-gnueabi/4.4.6/../../../../arm-linux-gnueabi/lib/COLLECT_GCC_OPTIONS='-v' '-march=armv7-a' '-mfloat-abi=softfp' '-mfpu=vfpv3-d16' '-mthumb'/usr/lib/gcc/arm-linux-gnueabi/4.4.6/collect2 --build-id --eh-frame-hdr -dynamic-linker /lib/ld-linux.so.3 -X --hash-style=both -m armelf_linux_eabi /usr/lib/gcc/arm-linux-gnueabi/4.4.6/../../../../arm-linux-gnueabi/lib/crt1.o /usr/lib/gcc/arm-linux-gnueabi/4.4.6/../../../../arm-linux-gnueabi/lib/crti.o /usr/lib/gcc/arm-linux-gnueabi/4.4.6/crtbegin.o -L/usr/lib/gcc/arm-linux-gnueabi/4.4.6 -L/usr/lib/gcc/arm-linux-gnueabi/4.4.6/../../../../arm-linux-gnueabi/lib /tmp/ccEJ19An.o -lgcc --as-needed -lgcc_s --no-as-needed -lc -lgcc --as-needed -lgcc_s --no-as-needed /usr/lib/gcc/arm-linux-gnueabi/4.4.6/crtend.o /usr/lib/gcc/arm-linux-gnueabi/4.4.6/../../../../arm-linux-gnueabi/lib/crtn.o
上传目标机器之后执行：
root@routon-h1:/mnt/tool/reverse-h1# ./a.outHello World
