Building Linux Userspace Applications |
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This application note explains how to build a Linux userspace application from the Linux-hosted cross development environment and then to deploy the built executable on the target.
- On the development host, install the prebuilt Yocto toolchain from here.
- Activate the toolchain:
$ source /opt/st/stm32mp1-som/2.4-snapshot/environment-setup-cortexa7hf-neon-vfpv4-openstlinux_weston-linux-gnueabi $ unset CCACHE_PATH
- Now the CC, LD, CFLAGS and the others standard build environment variables are set for cross-compilation for the STM32MP1 platform, eg:
$ $CC hello.c -o hello ...
- To deploy the build executable to the target, copy it to a USB Flash and plug in the USB Flash into any of USB connectors on the board:
$ mount /dev/sda1 /media $ cp /media/hello /tmp $ /tmp/hello Hello from STM32MP1-SOM! $
- Alternatively, you could deploy your application from the host to the target using scp:
$ scp hello
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:/tmp
- Another way of deploying the binary to the target is the exporting the build directory as an NFS share. Having NFS configured on your host, run on the target:
$ mount -o nolock 172.17.0.19:/work/stmp1 /mnt
$ ls -l /mnt
...
-rwxrwxr-x 1 1002 1002 14612 Apr 16 20:37 hello
-rw-rw-r-- 1 1002 1002 219 Apr 16 20:36 hello.c
$ cp /mnt/hello /tmp
$
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