>>> eigen 3.4.0 Extracting
bzcat /home/buildroot/instance-0/dl/eigen/eigen-3.4.0.tar.bz2 | /home/buildroot/instance-0/output-1/host/bin/tar --strip-components=1 -C /home/buildroot/instance-0/output-1/build/eigen-3.4.0   -xf -
>>> eigen 3.4.0 Patching

Applying 0001-Adds-new-CMake-Options-for-controlling-build-components.patch using patch: 
patching file CMakeLists.txt
Hunk #1 succeeded at 495 (offset 18 lines).
Hunk #2 succeeded at 615 (offset 1 line).
Hunk #3 succeeded at 652 (offset -8 lines).
patching file blas/CMakeLists.txt
patching file lapack/CMakeLists.txt
Hunk #1 FAILED at 1.
Hunk #2 succeeded at 450 (offset -7 lines).
1 out of 2 hunks FAILED -- saving rejects to file lapack/CMakeLists.txt.rej
make: *** [package/pkg-generic.mk:241: /home/buildroot/instance-0/output-1/build/eigen-3.4.0/.stamp_patched] Error 1
make: Leaving directory '/home/buildroot/instance-0/buildroot'