Flattening the build seems to have changed the order of actions when using Make and output directories for perlasm are no longer created before Perl is run. Additionally, if the output directory doesn't exist, the perlasm scripts seem to output to stdout instead. Change-Id: I59b801f7347951a3b9cef2ff084b28a00b2d5a3c Reviewed-on: https://boringssl-review.googlesource.com/31645 Reviewed-by: Adam Langley <agl@google.com>kris/onging/CECPQ3_patch15