module "generated_kernel_includes": cmd: unknown variable '$(PATH_OVERRIDE_SOONG)' #67
Description
Trying to build RR for Xperia XZ1 and getting
FAILED: out/soong/build.ninja out/soong/.bootstrap/bin/soong_build -t -l out/.module_paths/Android.bp.list -b out/soong -n out -d out/soong/build.ninja.d -globFile out/soong/.bootstrap/build-globs.ninja -o out/soong/build.ninja Android.bp error: vendor/rr/build/soong/Android.bp:30:8: module "generated_kernel_includes": cmd: unknown variable '$(PATH_OVERRIDE_SOONG)' 00:17:44 soong bootstrap failed with: exit status 1
How to fix? Internet is full of "solutions" but none seems to work.