Buildroot commit126162b915disabled parallel builds in Jan 2017 due to a bug which was fixed upstream in Nov 2017: https://github.com/pocoproject/poco/commit/1724e8ba53d05ce688dcdb5176b128f116af2682#diff-76ed074a9305c04054cdebb9e9aad2d818052b07091de1f20cad0bbac34ffb52 https://github.com/pocoproject/poco/commit/076dd9679bf2e77f1df219287f0eb42ea36b7371 Building with -j100 worked. Signed-off-by: Bernd Kuhls <bernd@kuhls.net> Signed-off-by: Julien Olivain <ju.o@free.fr> (cherry picked from commit2a1e6376c1) Signed-off-by: Thomas Perale <thomas.perale@mind.be>