tree b4e2f5b1b44580157fea9f11f098d4c8c1726e62
parent b86325a1eacd377ae6e9e935b0be25e18d6c57bf
author Andrew Walbran <qwandor@google.com> 1578932580 +0000
committer Andrew Walbran <qwandor@google.com> 1578932763 +0000

Set GCC_TOOLCHAIN_DIR for Linux builds so they get the right 'as'.

Previously this was being inferred from the LD we passed, but this
was broken by the Linux Makefile change in
https://hafnium-review.googlesource.com/c/hafnium/third_party/linux/+/7943,
which resulted in the build using the system assembler from
/usr/bin/as instead, which may fail and is not hermetic.

Bug: 132428451
Change-Id: I3ff7bf18d7a68435b9b5a4e9ddd1f9dcbd8d93d3