2014年6月4日 (三) 20:03的版本

1 概述

工具链，即编译、调试等相关的工具，如 gcc, g++, as, ld, strip, gdb, objcopy, objdump, gprof, strings ...

小米路由 R1D（带硬盘版）主核心 BCM4709 内的处理器是两个 ARM Cortex-A9 核

Cortex-A9 为 ARMv7 指令集，多媒体引擎NEON (SIMD指令）和浮点部件VFP 为可选实现

貌似 BCM4709 没有带 neon 和 vfp

2 小米官方工具链

官方放出了一个工具链包： http://bigota.miwifi.com/xiaoqiang/sdk/toolchain/xiaomi_toolchain.zip

基于 crosstool-NG 1.19.0 构建，参数如下：

comcat@jackslab:/work/openwrt/xiaomi/toolchain$ ./arm-xiaomi-linux-uclibcgnueabi/bin/arm-xiaomi-linux-uclibcgnueabi-gcc -v
Using built-in specs.
COLLECT_GCC=./arm-xiaomi-linux-uclibcgnueabi/bin/arm-xiaomi-linux-uclibcgnueabi-gcc
COLLECT_LTO_WRAPPER=/work/openwrt/xiaomi/toolchain/arm-xiaomi-linux-uclibcgnueabi/bin/../libexec/gcc/arm-xiaomi-linux-uclibcgnueabi/4.8.2/lto-wrapper
Target: arm-xiaomi-linux-uclibcgnueabi
Configured with: /home/lijiqi/crossng/xq/.build/src/gcc-linaro-4.8-2013.06-1/configure --build=i686-build_pc-linux-gnu --host=i686-build_pc-linux-gnu 
 --target=arm-xiaomi-linux-uclibcgnueabi --prefix=/home/lijiqi/x-tools/arm-xiaomi-linux-uclibcgnueabi
 --with-sysroot=/home/lijiqi/x-tools/arm-xiaomi-linux-uclibcgnueabi/arm-xiaomi-linux-uclibcgnueabi/sysroot
 --enable-languages=c,c++
 --with-arch=armv7-a --with-cpu=cortex-a9 --with-tune=cortex-a9 --with-float=soft
 --with-pkgversion='crosstool-NG 1.19.0' --enable-__cxa_atexit --disable-libmudflap --disable-libgomp --disable-libssp --disable-libquadmath --disable-libquadmath-support
 --with-gmp=/home/lijiqi/crossng/xq/.build/arm-xiaomi-linux-uclibcgnueabi/buildtools --with-mpfr=/home/lijiqi/crossng/xq/.build/arm-xiaomi-linux-uclibcgnueabi/buildtools
 --with-mpc=/home/lijiqi/crossng/xq/.build/arm-xiaomi-linux-uclibcgnueabi/buildtools --with-isl=/home/lijiqi/crossng/xq/.build/arm-xiaomi-linux-uclibcgnueabi/buildtools
 --with-cloog=/home/lijiqi/crossng/xq/.build/arm-xiaomi-linux-uclibcgnueabi/buildtools --with-libelf=/home/lijiqi/crossng/xq/.build/arm-xiaomi-linux-uclibcgnueabi/buildtools
 --with-host-libstdcxx='-static-libgcc -Wl,-Bstatic,-lstdc++,-Bdynamic -lm' --enable-threads=posix --enable-target-optspace --disable-multilib
 --with-local-prefix=/home/lijiqi/x-tools/arm-xiaomi-linux-uclibcgnueabi/arm-xiaomi-linux-uclibcgnueabi/sysroot --enable-c99 --enable-long-long
Thread model: posix
gcc version 4.8.2 20130603 (prerelease) (crosstool-NG 1.19.0) 

3 Broadcom 官方工具链

Broadcom 为 BCM4709 发布的 SDK 带有相关工具链：hndtools-arm-linux-2.6.36-uclibc-4.5.3

comcat@jackslab:/work/openwrt/xiaomi/toolchain/arm-neon-vfp-test$ /opt/brcm-arm/bin/arm-brcm-linux-uclibcgnueabi-gcc -v
Using built-in specs.
COLLECT_GCC=/opt/brcm-arm/bin/arm-brcm-linux-uclibcgnueabi-gcc
COLLECT_LTO_WRAPPER=/opt/brcm-arm/hndtools-arm-linux-2.6.36-uclibc-4.5.3/bin/../libexec/gcc/arm-brcm-linux-uclibcgnueabi/4.5.3/lto-wrapper
Target: arm-brcm-linux-uclibcgnueabi
Configured with: /projects/toolchains_build/buildroot-2012.02-brcm/output/toolchain/gcc-4.5.3/configure
 --prefix=/projects/hnd/tools/linux/hndtools-arm-linux-2.6.36-uclibc-4.5.3 --build=i686-pc-linux-gnu --host=i686-pc-linux-gnu
 --target=arm-brcm-linux-uclibcgnueabi --enable-languages=c,c++
 --with-sysroot=/projects/hnd/tools/linux/hndtools-arm-linux-2.6.36-uclibc-4.5.3/arm-brcm-linux-uclibcgnueabi/sysroot
 --with-build-time-tools=/projects/hnd/tools/linux/hndtools-arm-linux-2.6.36-uclibc-4.5.3/arm-brcm-linux-uclibcgnueabi/bin
 --disable-__cxa_atexit --enable-target-optspace --disable-libgomp --with-gnu-ld --disable-libssp --disable-multilib
 --disable-tls --enable-shared --with-gmp=/projects/hnd/tools/linux/hndtools-arm-linux-2.6.36-uclibc-4.5.3
 --with-mpfr=/projects/hnd/tools/linux/hndtools-arm-linux-2.6.36-uclibc-4.5.3
 --with-mpc=/projects/hnd/tools/linux/hndtools-arm-linux-2.6.36-uclibc-4.5.3
 --enable-threads --disable-decimal-float --with-float=soft --with-abi=aapcs-linux
 --with-arch=armv7-a --with-tune=cortex-a9
 --with-pkgversion='Buildroot 2012.02' --with-bugurl=http://bugs.buildroot.net/
Thread model: posix
gcc version 4.5.3 (Buildroot 2012.02)