Table of Contents

Common errors when building OpenWrt

Unclean buildroot

  1. Files inside the buildroot are specific to host systems.
    Build dependency: Please install GNU find

# old files in staging_dir/host
  2. remove untracked files with the help of svn or git
  3. use make targets depending on what you don't want
    make clean
make dirclean
make distclean
make target/linux/clean *
rm -rf tmp/
rm .config .config.old
  4. Kernel Config change is not triggering rebuild, see: openwrt-devel

If you are running a buildroot inside a VM with many threads you might experience random build failures.

Setup: Host: i7 16GB RAM, VM on Harddisk, Win 7 64bit, VMWare Player Guest: Lubuntu 13.04 64bit 4GB RAM ext4 partition make -j 8

Errors: Build fails like 

mv: cannot stat '.deps/dlog.Tpo': No such file or directory

or 

../libtool: line 46: -c: command not found
libtool: Version mismatch error.  This is libtool 2.4, but the
libtool: definition of this LT_INIT comes from libtool 2.2.6.
libtool: You should recreate aclocal.m4 with macros from libtool 2.4
libtool: and run autoconf again.

Cleaning up buildroot helps sometimes, reduce concurrency.

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