If you are compiling core-sato-image yocto root filesystem, then you might have observed that it compile lot of development environment ( ubuntu ) specific packages which are required to compile the filesystem. So, if you are compiling the file-system again and again during the development, it may take lot of time to compile those native packages. So this can be avoided by adding ASSUME_PROVIDED in the meta/conf/bitbake.conf.

Execution & Command Syntax

Terminalbash
git everytime, since you already have git & uboots mkimage installed on your Ubuntu, then you can add an option as, ASSUME_PROVIDED = "\ git-native \ u-boot-mkimage \ " As per Yocto project reference manual ASSUME_PROVIDED is defined as, ASSUME_PROVIDED – Lists recipe names (PN values) BitBake does not attempt to build

Risk level: destructive. Review the command before running it.

Terminalbash
sed rather than building git-native

Technical Implementation Details

For example, you want to save time on compiling git everytime, since you already have git & uboots mkimage installed on your Ubuntu, then you can add an option as, ASSUME_PROVIDED = "\ git-native \ u-boot-mkimage \ " As per Yocto project reference manual ASSUME_PROVIDED is defined as, ASSUME_PROVIDED – Lists recipe names (PN values) BitBake does not attempt to build. Instead, BitBake assumes these recipes have already been built. In OpenEmbedded-Core, ASSUME_PROVIDED mostly specifies native tools that should not be built. An example is git-native, which when specified, allows for the Git binary from the host to be used rather than building git-native.

Gotchas and Common Issues

  • Permission Verification - confirm execution permissions and path variables before invoking system binaries.

  • Version Compatibility - check software version release notes for deprecated flags or syntax changes.

  • Log Monitoring - inspect system logs (journalctl or /var/log) to troubleshoot execution failures.

Following these steps ensures clean configuration, proper security boundaries, and reliable execution for speed up yocto build time using assume_provided.