【EASY EAI Nano开源套件试用体验】Ubuntu 20.04下的开发环境搭建和第一个交叉编译程序执行

因为一直用Ubuntu 20.04环境，没有使用官方的VMWARE镜像搭建环境，所以直接开贴来一篇。

一、开发环境准备

（一）操作系统

使用的是Ubuntu 20.04。

root@EliteDesk:/$ uname -a
Linux EliteDesk 5.15.0-48-generic #54~20.04.1-Ubuntu SMP Thu Sep 1 16:17:26 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux

（二）Cmake

执行sudo apt install cmake命令安装cmake。

root@EliteDesk:/$ sudo apt  install cmake
[sudo] password for root:
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following package was automatically installed and is no longer required:
  libfwupdplugin1
Use 'sudo apt autoremove' to remove it.
The following additional packages will be installed:
  cmake-data libjsoncpp1 librhash0
Suggested packages:
  cmake-doc ninja-build
The following NEW packages will be installed:
  cmake cmake-data libjsoncpp1 librhash0
0 upgraded, 4 newly installed, 0 to remove and 0 not upgraded.
Need to get 5,470 kB of archives.
After this operation, 28.3 MB of additional disk space will be used.
Do you want to continue? [Y/n] y
Get:1 http://mirrors.aliyun.com/ubuntu focal/main amd64 cmake-data all 3.16.3-1ubuntu1 [1,612 kB]
Get:2 http://mirrors.aliyun.com/ubuntu focal/main amd64 libjsoncpp1 amd64 1.7.4-3.1ubuntu2 [75.6 kB]
Get:3 http://mirrors.aliyun.com/ubuntu focal/main amd64 librhash0 amd64 1.3.9-1 [113 kB]
Get:4 http://mirrors.aliyun.com/ubuntu focal/main amd64 cmake amd64 3.16.3-1ubuntu1 [3,669 kB]
Fetched 5,470 kB in 4s (1,397 kB/s)
Selecting previously unselected package cmake-data.
(Reading database ... 221845 files and directories currently installed.)
Preparing to unpack .../cmake-data_3.16.3-1ubuntu1_all.deb ...
Unpacking cmake-data (3.16.3-1ubuntu1) ...
Selecting previously unselected package libjsoncpp1:amd64.
Preparing to unpack .../libjsoncpp1_1.7.4-3.1ubuntu2_amd64.deb ...
Unpacking libjsoncpp1:amd64 (1.7.4-3.1ubuntu2) ...
Selecting previously unselected package librhash0:amd64.
Preparing to unpack .../librhash0_1.3.9-1_amd64.deb ...
Unpacking librhash0:amd64 (1.3.9-1) ...
Selecting previously unselected package cmake.
Preparing to unpack .../cmake_3.16.3-1ubuntu1_amd64.deb ...
Unpacking cmake (3.16.3-1ubuntu1) ...
Setting up librhash0:amd64 (1.3.9-1) ...
Setting up cmake-data (3.16.3-1ubuntu1) ...
Setting up libjsoncpp1:amd64 (1.7.4-3.1ubuntu2) ...
Setting up cmake (3.16.3-1ubuntu1) ...
Processing triggers for man-db (2.9.1-1) ...
Processing triggers for libc-bin (2.31-0ubuntu9.9) ...

二、安装交叉编译工具链
直接使用官方下载的rv1126_rv1109_compiler_20220715_175105.tar.gz 文件，执行sudo tar xvf rv1126_rv1109_compiler_20220715_175105.tar.gz -C /
千万记得加上sudo，不要问为什么。

root@EliteDesk:/$ sudo tar xvf rv1126_rv1109_compiler_20220715_175105.tar.gz -C /
[sudo] password for root:
opt/rv1126_rv1109_sdk/prebuilts/gcc/linux-x86/arm/gcc-arm-8.3-2019.03-x86_64-arm-linux-gnueabihf/
opt/rv1126_rv1109_sdk/prebuilts/gcc/linux-x86/arm/gcc-arm-8.3-2019.03-x86_64-arm-linux-gnueabihf/libexec/
opt/rv1126_rv1109_sdk/prebuilts/gcc/linux-x86/arm/gcc-arm-8.3-2019.03-x86_64-arm-linux-gnueabihf/libexec/gcc/
opt/rv1126_rv1109_sdk/prebuilts/gcc/linux-x86/arm/gcc-arm-8.3-2019.03-x86_64-arm-linux-gnueabihf/libexec/gcc/arm-linux-gnueabihf/
opt/rv1126_rv1109_sdk/prebuilts/gcc/linux-x86/arm/gcc-arm-8.3-2019.03-x86_64-arm-linux-gnueabihf/libexec/gcc/arm-linux-gnueabihf/8.3.0/
opt/rv1126_rv1109_sdk/prebuilts/gcc/linux-x86/arm/gcc-arm-8.3-2019.03-x86_64-arm-linux-gnueabihf/libexec/gcc/arm-linux-gnueabihf/8.3.0/cc1plus
opt/rv1126_rv1109_sdk/prebuilts/gcc/linux-x86/arm/gcc-arm-8.3-2019.03-x86_64-arm-linux-gnueabihf/libexec/gcc/arm-linux-gnueabihf/8.3.0/collect2
opt/rv1126_rv1109_sdk/prebuilts/gcc/linux-x86/arm/gcc-arm-8.3-2019.03-x86_64-arm-linux-gnueabihf/libexec/gcc/arm-linux-gnueabihf/8.3.0/liblto_plugin.so.0.0.0
opt/rv1126_rv1109_sdk/prebuilts/gcc/linux-x86/arm/gcc-arm-8.3-2019.03-x86_64-arm-linux-gnueabihf/libexec/gcc/arm-linux-gnueabihf/8.3.0/install-tools/
opt/rv1126_rv1109_sdk/prebuilts/gcc/linux-x86/arm/gcc-arm-8.3-2019.03-x86_64-arm-linux-gnueabihf/libexec/gcc/arm-linux-gnueabihf/8.3.0/install-tools/mkinstalldirs
opt/rv1126_rv1109_sdk/prebuilts/gcc/linux-x86/arm/gcc-arm-8.3-2019.03-x86_64-arm-linux-gnueabihf/libexec/gcc/arm-linux-gnueabihf/8.3.0/install-tools/fixincl
opt/rv1126_rv1109_sdk/prebuilts/gcc/linux-x86/arm/gcc-arm-8.3-2019.03-x86_64-arm-linux-gnueabihf/libexec/gcc/arm-linux-gnueabihf/8.3.0/install-tools/mkheaders
opt/rv1126_rv1109_sdk/prebuilts/gcc/linux-x86/arm/gcc-arm-8.3-2019.03-x86_64-arm-linux-gnueabihf/libexec/gcc/arm-linux-gnueabihf/8.3.0/install-tools/fixinc.sh
opt/rv1126_rv1109_sdk/prebuilts/gcc/linux-x86/arm/gcc-arm-8.3-2019.03-x86_64-arm-linux-gnueabihf/libexec/gcc/arm-linux-gnueabihf/8.3.0/f951
opt/rv1126_rv1109_sdk/prebuilts/gcc/linux-x86/arm/gcc-arm-8.3-2019.03-x86_64-arm-linux-gnueabihf/libexec/gcc/arm-linux-gnueabihf/8.3.0/plugin/
opt/rv1126_rv1109_sdk/prebuilts/gcc/linux-x86/arm/gcc-arm-8.3-2019.03-x86_64-arm-linux-gnueabihf/libexec/gcc/arm-linux-gnueabihf/8.3.0/plugin/gengtype
opt/rv1126_rv1109_sdk/prebuilts/gcc/linux-x86/arm/gcc-arm-8.3-2019.03-x86_64-arm-linux-gnueabihf/libexec/gcc/arm-linux-gnueabihf/8.3.0/lto-wrapper
opt/rv1126_rv1109_sdk/prebuilts/gcc/linux-x86/arm/gcc-arm-8.3-2019.03-x86_64-arm-linux-gnueabihf/libexec/gcc/arm-linux-gnueabihf/8.3.0/liblto_plugin.so
opt/rv1126_rv1109_sdk/prebuilts/gcc/linux-x86/arm/gcc-arm-8.3-2019.03-x86_64-arm-linux-gnueabihf/libexec/gcc/arm-linux-gnueabihf/8.3.0/liblto_plugin.so.0
opt/rv1126_rv1109_sdk/prebuilts/gcc/linux-x86/arm/gcc-arm-8.3-2019.03-x86_64-arm-linux-gnueabihf/libexec/gcc/arm-linux-gnueabihf/8.3.0/lto1
opt/rv1126_rv1109_sdk/prebuilts/gcc/linux-x86/arm/gcc-arm-8.3-2019.03-x86_64-arm-linux-gnueabihf/libexec/gcc/arm-linux-gnueabihf/8.3.0/cc1
opt/rv1126_rv1109_sdk/prebuilts/gcc/linux-x86/arm/gcc-arm-8.3-2019.03-x86_64-arm-linux-gnueabihf/8.3-2019.03-x86_64-arm-linux-gnueabihf-manifest.txt
opt/rv1126_rv1109_sdk/prebuilts/gcc/linux-x86/arm/gcc-arm-8.3-2019.03-x86_64-arm-linux-gnueabihf/share/
opt/rv1126_rv1109_sdk/prebuilts/gcc/linux-x86/arm/gcc-arm-8.3-2019.03-x86_64-arm-linux-gnueabihf/share/locale/

然后坐等安装完成。

设置环境变量，将刚才安装的SDK包含：

root@EliteDesk:/media/rv1126$ export PATH=/opt/rv1126_rv1109_sdk/buildroot/output/rockchip_face_board/host/bin:$PATH
root@EliteDesk:/media/rv1126$ export ARCH=arm
root@EliteDesk:/media/rv1126$ export CROSS_COMPILE=arm-linux-gnueabihf-

测试交叉编译环境是否安装成功：

root@EliteDesk:/media/rv1126$ qmake -v
QMake version 3.1
Using Qt version 5.15.2 in /opt/rv1126_rv1109_sdk/buildroot/output/rockchip_face_board/host/arm-buildroot-linux-gnueabihf/sysroot/usr/lib
root@EliteDesk:/media/rv1126$ arm-linux-gnueabihf-gcc -v
Using built-in specs.
COLLECT_GCC=/opt/rv1126_rv1109_sdk/buildroot/../prebuilts/gcc/linux-x86/arm/gcc-arm-8.3-2019.03-x86_64-arm-linux-gnueabihf/bin/arm-linux-gnueabihf-gcc
COLLECT_LTO_WRAPPER=/opt/rv1126_rv1109_sdk/prebuilts/gcc/linux-x86/arm/gcc-arm-8.3-2019.03-x86_64-arm-linux-gnueabihf/bin/../libexec/gcc/arm-linux-gnueabihf/8.3.0/lto-wrapper
Target: arm-linux-gnueabihf
Configured with: /tmp/dgboter/bbs/rhev-vm8--rhe6x86_64/buildbot/rhe6x86_64--arm-linux-gnueabihf/build/src/gcc/configure --target=arm-linux-gnueabihf --prefix= --with-sysroot=/arm-linux-gnueabihf/libc --with-build-sysroot=/tmp/dgboter/bbs/rhev-vm8--rhe6x86_64/buildbot/rhe6x86_64--arm-linux-gnueabihf/build/build-arm-linux-gnueabihf/install//arm-linux-gnueabihf/libc --with-bugurl=https://bugs.linaro.org/ --enable-gnu-indirect-function --enable-shared --disable-libssp --disable-libmudflap --enable-checking=release --enable-languages=c,c++,fortran --with-gmp=/tmp/dgboter/bbs/rhev-vm8--rhe6x86_64/buildbot/rhe6x86_64--arm-linux-gnueabihf/build/build-arm-linux-gnueabihf/host-tools --with-mpfr=/tmp/dgboter/bbs/rhev-vm8--rhe6x86_64/buildbot/rhe6x86_64--arm-linux-gnueabihf/build/build-arm-linux-gnueabihf/host-tools --with-mpc=/tmp/dgboter/bbs/rhev-vm8--rhe6x86_64/buildbot/rhe6x86_64--arm-linux-gnueabihf/build/build-arm-linux-gnueabihf/host-tools --with-isl=/tmp/dgboter/bbs/rhev-vm8--rhe6x86_64/buildbot/rhe6x86_64--arm-linux-gnueabihf/build/build-arm-linux-gnueabihf/host-tools --with-arch=armv7-a --with-fpu=neon --with-float=hard --with-arch=armv7-a --with-pkgversion='GNU Toolchain for the A-profile Architecture 8.3-2019.03 (arm-rel-8.36)'
Thread model: posix
gcc version 8.3.0 (GNU Toolchain for the A-profile Architecture 8.3-2019.03 (arm-rel-8.36))

OK，一切正常。

三、HELLO Easy EAI

来个hello小程序吧。

#include <stdio.h>
#include <stdlib.h>
int main(void)
{
        int i;
        for(i = 0; i < 5; i++) {
                printf("hello Easy EAI!%d \n", i);
        }
        return 0;
}