The ARM1176JZF-S http://infocenter.arm.com/help/topic/com.arm.doc.ddi0301h/ddi0301h_arm1176jzfs_r0p7_trm.pdf%20ARM%20docBCM2835 SoC（在某些 Raspberry Pi 型号上使用）中的核心是 ARMv6z 架构，其中包括通过 VFPv2 的硬浮点支持，因此这绝对是一个有效的目标配置。
问题在于 Linaro 工具链的维护者指定 ARMv7A 作为最低支持的架构。它使得使用 Debian 交叉编译器包对 Raspberry Pi 进行交叉编译相当无望，因为如果您正确配置 BCM2835 的构建，各种内置程序将会失败-march=armv6z -mtune=arm1176jzf-s -mfpu=vfp -mfloat-abi=hard
This is gcc -v在 Raspbian 拉伸上：
$ gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/arm-linux-gnueabihf/6/lto-wrapper
Target: arm-linux-gnueabihf
Configured with: ../src/configure -v --with-pkgversion='Raspbian 6.3.0-18+rpi1+deb9u1' --with-bugurl=file:///usr/share/doc/gcc-6/README.Bugs --enable-languages=c,ada,c++,java,go,d,fortran,objc,obj-c++ --prefix=/usr --program-suffix=-6 --program-prefix=arm-linux-gnueabihf- --enable-shared --enable-linker-build-id --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --with-default-libstdcxx-abi=new --enable-gnu-unique-object --disable-libitm --disable-libquadmath --enable-plugin --with-system-zlib --disable-browser-plugin --enable-java-awt=gtk --enable-gtk-cairo --with-java-home=/usr/lib/jvm/java-1.5.0-gcj-6-armhf/jre --enable-java-home --with-jvm-root-dir=/usr/lib/jvm/java-1.5.0-gcj-6-armhf --with-jvm-jar-dir=/usr/lib/jvm-exports/java-1.5.0-gcj-6-armhf --with-arch-directory=arm --with-ecj-jar=/usr/share/java/eclipse-ecj.jar --with-target-system-zlib --enable-objc-gc=auto --enable-multiarch --disable-sjlj-exceptions --with-arch=armv6 --with-fpu=vfp --with-float=hard --enable-checking=release --build=arm-linux-gnueabihf --host=arm-linux-gnueabihf --target=arm-linux-gnueabihf
Thread model: posix
gcc version 6.3.0 20170516 (Raspbian 6.3.0-18+rpi1+deb9u1)
相比于arm-linux-gnueabi-gcc-6 -v在 Ubuntu 18.04 上：
$ arm-linux-gnueabihf-gcc-6 -v
Using built-in specs.
COLLECT_GCC=arm-linux-gnueabihf-gcc-6
COLLECT_LTO_WRAPPER=/usr/lib/gcc-cross/arm-linux-gnueabihf/6/lto-wrapper
Target: arm-linux-gnueabihf
Configured with: ../src/configure -v --with-pkgversion='Ubuntu/Linaro 6.4.0-17ubuntu1' --with-bugurl=file:///usr/share/doc/gcc-6/README.Bugs --enable-languages=c,ada,c++,go,d,fortran,objc,obj-c++ --prefix=/usr --with-as=/usr/bin/arm-linux-gnueabihf-as --with-ld=/usr/bin/arm-linux-gnueabihf-ld --program-suffix=-6 --enable-shared --enable-linker-build-id --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --with-default-libstdcxx-abi=new --enable-gnu-unique-object --disable-libitm --disable-libquadmath --enable-plugin --enable-default-pie --with-system-zlib --with-target-system-zlib --enable-multiarch --enable-multilib --disable-sjlj-exceptions --with-arch=armv7-a --with-fpu=vfpv3-d16 --with-float=hard --with-mode=thumb --disable-werror --enable-multilib --enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=arm-linux-gnueabihf --program-prefix=arm-linux-gnueabihf- --includedir=/usr/arm-linux-gnueabihf/include
Thread model: posix
gcc version 6.4.0 20180424 (Ubuntu/Linaro 6.4.0-17ubuntu1)
并注意前者有--with-arch=armv6 --with-fpu=vfp --with-float=hard而后者有--with-arch=armv7-a --with-fpu=vfpv3-d16 --with-float=hard
这篇博文 https://medium.com/@zw3rk/making-a-raspbian-cross-compilation-sdk-830fe56d75ba提供了一种解决方案（基本上使用 Clang 并自建 binutils）：
