I have succesfully built images from MASTER over the last week or so - but today after getting latest
git pull
./scripts/feeds update -a
./scripts/feeds install -a
make menuconfig
make V=s
I get a build error and w new missing dependency - but I can't see why? - can anyone help (nothing changed menuconfig (but I did try adding librt as that looked like a dependency - but same result...)
I believe it's an current issue with current mainline/snapshots, started with yesterday (20210215) snapshot
There are quite a few recent changes regarding ubox and ABI version, probably broke this
thanks @dominick-han and @anomeome - all fine indeed it looks like it was recent changes now fixed with another git pull, cleaned build environment anyway but now building fine again
I'm suffering the same error with a RPi4 build, I've tried the above steps but get the same error, I guess it's best to leave it a day or two and try again and see if the problem is fixed.
In general, always do "make clean" before a build, especially if you have already got failures.
Additionally, when the package metadata and its handling rules have changed (like now), it may also help do delete the contents of tmp/ and let the build system to re-create the package data. Directory tmp/ in buildroot contains several semi-hidden .package* database files, that may have now somehow sneakily invalid. (similar may happen e.g. when a package is moved from OpenWrt main repo to the Github feeds, or something similar)