Summary:
We've been squeaking by with assuming that flex is installed already
on posix systems, but that isn't the case on the github actions default
configuration.
Adjust the bison recipe: on windows it deploys both flex and bison. We use the
same source for both flex and bison but install flex to a separate install
prefix to make it easier to consume the flex dependency distinct from the bison
dependency.
The latest flex release segfaults during compilation on linux unless we
force -DGNU_SOURCE, so the manifest does that on linux.
Reviewed By: simpkins
Differential Revision: D17385051
fbshipit-source-id: 9f31b07849af9de50099d1b20bedba517bbbdf2f
Summary:
These are ported over from the logic in the watchman and eden getdeps
scripts, with additions to help bootstrap a build environment.
These are sufficient to build watchman with thrift support on windows, mac and
linux, and eden on mac and linux when combined with the getdeps code that
follows in later diffs in this stack.
Reviewed By: simpkins
Differential Revision: D14691005
fbshipit-source-id: 7f8b02fedcdc020e2d0e758c466959d8161d4587
