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| − | ===搭建编译环境===
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| − | 建议使用'''64位'''的[http://mirrors.aliyun.com/ubuntu-releases/20.04/ 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：
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| − | <syntaxhighlight lang="bash">
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| − | sudo apt-get -y update
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| − | sudo apt-get install -y sudo curl
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| − | sudo bash -c \
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| − | "$(curl -fsSL https://raw.githubusercontent.com/friendlyarm/build-env-on-ubuntu-bionic/master/install.sh)"
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| − | </syntaxhighlight>
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| − | 脚本执行完成后，你的电脑上会安装好如下交叉编译器:
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| − | {| class="wikitable"
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| − | |-
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| − | ! 版本
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| − | ! 架构
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| − | ! 编译器路径
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| − | ! 用途
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| − | |-
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| − | | 4.9.3
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| − | | armhf
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| − | | /opt/FriendlyARM/toolchain/4.9.3
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| − | | 用于编译32位的arm应用程序
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| − | |-
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| − | | 6.4
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| − | | aarch64
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| − | | /opt/FriendlyARM/toolchain/6.4-aarch64
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| − | | 用于交叉编译4.4内核及Qt5.10应用程序
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| − | |-
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| − | | 11.3
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| − | | aarch64
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| − | | /opt/FriendlyARM/toolchain/11.3-aarch64
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| − | | 用于交叉编译4.19及以上内核(含5.10,5.15)及uboot
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| − | |}
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| − | ===设置交叉编译器===
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| − | 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：
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| − | <syntaxhighlight lang="bash">
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| − | export PATH=/opt/FriendlyARM/toolchain/11.3-aarch64/bin:$PATH
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| − | export GCC_COLORS=auto
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| − | </syntaxhighlight>
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| − | 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：
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| − | <syntaxhighlight lang="bash">
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| − | . ~/.bashrc
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| − | </syntaxhighlight>
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| − | 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：
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| − | <syntaxhighlight lang="bash">
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| − | $ aarch64-linux-gcc -v
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| − | Using built-in specs.
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| − | COLLECT_GCC=aarch64-linux-gcc
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| − | COLLECT_LTO_WRAPPER=/opt/FriendlyARM/toolchain/11.3-aarch64/libexec/gcc/aarch64-cortexa53-linux-gnu/11.3.0/lto-wrapper
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| − | Target: aarch64-cortexa53-linux-gnu
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| − | 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
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| − | Thread model: posix
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| − | Supported LTO compression algorithms: zlib
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| − | gcc version 11.3.0 (ctng-1.25.0-119g-FA)
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| − | </syntaxhighlight>
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