8 Commits (8dec1a87243ab0656eba087a9683332eb49b4e9b)

Author	SHA1	Message	Date
James Tucker	8c2b755b2e	tool/gocross: use grep -E over egrep to avoid warning ... Recent egrep builds produce a warning: ``` egrep: warning: egrep is obsolescent; using grep -E ``` Updates #cleanup Signed-off-by: James Tucker <james@tailscale.com>	2 years ago
David Anderson	c9a4dbe383	tool/gocross: correctly embed the git commit into gocross ... Previously, the build ended up embedding an empty string, which made the shell wrapper rebuild gocross on every invocation. This is still reasonably fast, but fixing the bypass shaves 80% off gocross's overhead when no rebuild is needed. Signed-off-by: David Anderson <danderson@tailscale.com>	2 years ago
David Anderson	e7a78bc28f	tool/gocross: support running from outside the repo dir ... A bunch of us invoke tool/go from outside the repo that hosts gocross, as a way of accessing our version-controlled toolchain. This removes assumptions from gocross that it's being invoked within the repository that contains its source code and toolchain configuration. Fixes tailscale/corp#9627 Signed-off-by: David Anderson <danderson@tailscale.com>	2 years ago
David Anderson	0498d5ea86	tool/gocross: delete bootstrap tarball downloads after use ... Signed-off-by: David Anderson <danderson@tailscale.com>	2 years ago
David Anderson	df3996cae3	tool/gocross: bootstrap correctly on an older toolchain ... Sometimes, our cached toolchain ends up being an older version of Go, older than our go.mod allows. In that scenario, gocross-wrapper.sh would find a usable toolchain, but then fail to compile gocross. This change makes the wrapper script check that the cached toolchain's minor version is good enough to build tailscale.com, and re-bootstraps in shell if not. Signed-off-by: David Anderson <danderson@tailscale.com>	2 years ago
David Anderson	64181e17c8	tool/gocross: support local toolchain for development ... This makes gocross and its bootstrap script understand an absolute path in go.toolchain.rev to mean "use the given toolchain directly". Signed-off-by: David Anderson <danderson@tailscale.com>	2 years ago
David Anderson	7444dabb68	tool/gocross: do all the bootstrap steps in a subshell ... This avoids accidentally overwriting variables from the input environment, which might non-deterministically change the behavior of gocross. Signed-off-by: David Anderson <danderson@tailscale.com>	2 years ago
David Anderson	860734aed9	tool/gocross: a tool for building Tailscale binaries ... Signed-off-by: David Anderson <danderson@tailscale.com>	2 years ago