编译树莓派4环境下的rt-thread系统

交叉编译rt-thread

https://gitee.com/rtthread/rt-thread

准备

下载交叉编译链 https://developer.arm.com/tools-and-software/open-source-software/developer-tools/gnu-toolchain/gnu-a/downloads按说明下载(gcc-arm-8.3-2019.03-x86_64-aarch64-elf.tar.xz)
下载源码 git clone https://gitee.com/rtthread
安装编译工具 sudo apt-get install scons

编译

将交叉编译工具链解压缩到对应目录或自定义目录，保证路径与rtconfig.py中的EXEC_PATH定义相同。

$ cd rtthread/bsp/raspberry-pi/raspi4-64
$ vi rtconfig.py
 16 PLATFORM    = 'gcc'
 17 EXEC_PATH   = r'/opt/gcc-arm-8.3-2019.03-x86_64-aarch64-elf/bin/'
$ scons

如果报错

scons: Reading SConscript files ...
scons: done reading SConscript files.
scons: Building targets ...
scons: building associated VariantDir targets: build
CC build/applications/main.o
In file included from /media/wii/storage2/ros-dev/gcc-arm-8.3-2019.03-x86_64-aarch64-elf/aarch64-elf/include/signal.h:6,
                 from /media/wii/storage2/ros-dev/rt-thread/include/libc/libc_signal.h:72,
                 from /media/wii/storage2/ros-dev/rt-thread/include/rtlibc.h:21,
                 from /media/wii/storage2/ros-dev/rt-thread/include/rtdef.h:1103,
                 from /media/wii/storage2/ros-dev/rt-thread/include/rtthread.h:24,
                 from applications/main.c:11:
/media/wii/storage2/ros-dev/gcc-arm-8.3-2019.03-x86_64-aarch64-elf/aarch64-elf/include/sys/signal.h:42:7: error: redefinition of 'union sigval'
 union sigval {
       ^~~~~~
In file included from /media/wii/storage2/ros-dev/rt-thread/include/rtlibc.h:21,
                 from /media/wii/storage2/ros-dev/rt-thread/include/rtdef.h:1103,
                 from /media/wii/storage2/ros-dev/rt-thread/include/rtthread.h:24,
                 from applications/main.c:11:
/media/wii/storage2/ros-dev/rt-thread/include/libc/libc_signal.h:28:7: note: originally defined here
 union sigval
       ^~~~~~
In file included from /media/wii/storage2/ros-dev/gcc-arm-8.3-2019.03-x86_64-aarch64-elf/aarch64-elf/include/signal.h:6,
                 from /media/wii/storage2/ros-dev/rt-thread/include/libc/libc_signal.h:72,
                 from /media/wii/storage2/ros-dev/rt-thread/include/rtlibc.h:21,
                 from /media/wii/storage2/ros-dev/rt-thread/include/rtdef.h:1103,
                 from /media/wii/storage2/ros-dev/rt-thread/include/rtthread.h:24,
                 from applications/main.c:11:
/media/wii/storage2/ros-dev/gcc-arm-8.3-2019.03-x86_64-aarch64-elf/aarch64-elf/include/sys/signal.h:47:8: error: redefinition of 'struct sigevent'
 struct sigevent {
        ^~~~~~~~
In file included from /media/wii/storage2/ros-dev/rt-thread/include/rtlibc.h:21,
                 from /media/wii/storage2/ros-dev/rt-thread/include/rtdef.h:1103,
                 from /media/wii/storage2/ros-dev/rt-thread/include/rtthread.h:24,
                 from applications/main.c:11:
/media/wii/storage2/ros-dev/rt-thread/include/libc/libc_signal.h:36:8: note: originally defined here
 struct sigevent
        ^~~~~~~~
In file included from /media/wii/storage2/ros-dev/gcc-arm-8.3-2019.03-x86_64-aarch64-elf/aarch64-elf/include/signal.h:6,
                 from /media/wii/storage2/ros-dev/rt-thread/include/libc/libc_signal.h:72,
                 from /media/wii/storage2/ros-dev/rt-thread/include/rtlibc.h:21,
                 from /media/wii/storage2/ros-dev/rt-thread/include/rtdef.h:1103,
                 from /media/wii/storage2/ros-dev/rt-thread/include/rtthread.h:24,
                 from applications/main.c:11:
/media/wii/storage2/ros-dev/gcc-arm-8.3-2019.03-x86_64-aarch64-elf/aarch64-elf/include/sys/signal.h:72:3: error: conflicting types for 'siginfo_t'
 } siginfo_t;
   ^~~~~~~~~
In file included from /media/wii/storage2/ros-dev/rt-thread/include/rtlibc.h:21,
                 from /media/wii/storage2/ros-dev/rt-thread/include/rtdef.h:1103,
                 from /media/wii/storage2/ros-dev/rt-thread/include/rtthread.h:24,
                 from applications/main.c:11:
/media/wii/storage2/ros-dev/rt-thread/include/libc/libc_signal.h:55:24: note: previous declaration of 'siginfo_t' was here
 typedef struct siginfo siginfo_t;
                        ^~~~~~~~~
scons: *** [build/applications/main.o] Error 1
scons: building terminated because of errors.

则执行

$ scons -c
$ scons 重新编译

编译成功生成三个文件

文件	说明
rtthread.bin
rtthread.elf
rtthread.map