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From FriendlyELEC WiKi
1 搭建编译环境
建议使用64位的Ubuntu 20.04系统,下载并执行以下脚本,会安装编译及打包所需要的软件包,以及交叉编译器:
sudo apt-get -y update sudo apt-get install -y sudo curl sudo bash -c \ "$(curl -fsSL https://raw.githubusercontent.com/friendlyarm/build-env-on-ubuntu-bionic/master/install.sh)"
脚本执行完成后,你的电脑上会安装好如下交叉编译器:
版本 | 架构 | 编译器路径 | 用途 |
---|---|---|---|
4.9.3 | armhf | /opt/FriendlyARM/toolchain/4.9.3 | 用于编译32位的arm应用程序 |
6.4 | aarch64 | /opt/FriendlyARM/toolchain/6.4-aarch64 | 用于交叉编译4.4内核及Qt5.10应用程序 |
11.3 | aarch64 | /opt/FriendlyARM/toolchain/11.3-aarch64 | 用于交叉编译4.19及以上内核(含5.10,5.15)及uboot |
2 设置交叉编译器
参考上一节的表格,选用合适版本的编译器,然后将编译器的路径加入到PATH中,例加要使用11.3的交叉编译器,用vi编辑vi ~/.bashrc,在末尾加入以下内容:
export PATH=/opt/FriendlyARM/toolchain/11.3-aarch64/bin:$PATH export GCC_COLORS=auto
执行一下~/.bashrc脚本让设置立即在当前shell窗口中生效,注意"."后面有个空格:
. ~/.bashrc
这个编译器是64位的,不能在32位的PC Linux系统上运行,设置完成后,用以下命令可以验证是否安装成功:
$ aarch64-linux-gcc -v Using built-in specs. COLLECT_GCC=aarch64-linux-gcc COLLECT_LTO_WRAPPER=/opt/FriendlyARM/toolchain/11.3-aarch64/libexec/gcc/aarch64-cortexa53-linux-gnu/11.3.0/lto-wrapper Target: aarch64-cortexa53-linux-gnu Configured with: /home/cross/arm64/src/gcc/configure --build=x86_64-build_pc-linux-gnu --host=x86_64-build_pc-linux-gnu --target=aarch64-cortexa53-linux-gnu --prefix=/opt/FriendlyARM/toolchain/11.3-aarch64 --exec_prefix=/opt/FriendlyARM/toolchain/11.3-aarch64 --with-sysroot=/opt/FriendlyARM/toolchain/11.3-aarch64/aarch64-cortexa53-linux-gnu/sysroot --enable-languages=c,c++ --enable-fix-cortex-a53-843419 --with-arch=armv8-a+crypto+crc --with-cpu=cortex-a53 --with-pkgversion=ctng-1.25.0-119g-FA --with-bugurl=http://www.friendlyelec.com/ --enable-objc-gc --enable-__cxa_atexit --disable-libmudflap --disable-libgomp --disable-libssp --disable-libquadmath --disable-libquadmath-support --disable-libsanitizer --disable-libmpx --with-gmp=/home/cross/arm64/buildtools --with-mpfr=/home/cross/arm64/buildtools --with-mpc=/home/cross/arm64/buildtools --with-isl=/home/cross/arm64/buildtools --enable-lto --enable-threads=posix --disable-libstdcxx-pch --enable-clocale=gnu --enable-libstdcxx-time=yes --with-default-libstdcxx-abi=new --enable-gnu-indirect-function --enable-gnu-unique-object --enable-default-pie --enable-linker-build-id --with-linker-hash-style=gnu --enable-plugin --enable-gold --with-libintl-prefix=/home/cross/arm64/buildtools --disable-multilib --with-local-prefix=/opt/FriendlyARM/toolchain/11.3-aarch64/aarch64-cortexa53-linux-gnu/sysroot --enable-long-long --enable-checking=release --enable-link-serialization=2 Thread model: posix Supported LTO compression algorithms: zlib gcc version 11.3.0 (ctng-1.25.0-119g-FA)