See merge commit 66693401

This commit also adds a check for a left-over testsuite/.git folder to sync-all

This way, the first time sync-all is called after updating to a
post-testsuite-merge (see #8545) state of ghc.git, the sync-all script
aborts with an error message if a `testsuite/.git` folder is detected and
thus forces the user to take action.

Signed-off-by: Herbert Valerio Riedel <hvr@gnu.org>

Under --slow, the DPH tests can take incredible amounts of time to run.
And on some platforms, we may not have a fully working linker in order
to build DPH etc anyway. So this provides a way to turn it off.

This flag is off by default, but should your specify it, you can skip
the required 'dph' libraries in a build, should you remove them from the
source tree.

Signed-off-by: Austin Seipp <aseipp@pobox.com>

This basically turns the comment at the beginning of the `validate`
shell script into an interactive `--help` output plus some minor additions.

Should help to track down cache-out-of-date problems

This means that we can use the standard MonadIO class, rather than
needing our own copy.

This makes life easier, as ghc.mk has access to HADDOCK_DOCS
and DYNAMIC_BY_DEFAULT, so knows the right way to build it.

It's less precise now, but still good enough for what we need, and
this way we don't need to have literal tabs in the file.

I've also renamed the bindisttest install directory to contain multiple
spaces, so we are also testing that multiple spaces aren't getting
collapsed into a single space.

This makes "make" keep working after a "./validate --fast".

The --fast option now disables the following:
  - dynamic libs
  - bindist and bindisttest

Which knocks several minutes off validate for me, but it's still over
30 minutes using 5 cores on 64-bit Linux.

Usual caveats apply: if you're using --fast, then make sure you aren't
doing anything that might destabilise dynamic libs or binary dists.

We don't actually enable the test yet, but when we do validate will
check whether it fails.

This reverts commit e44c591c.

for debugging the build system.

This fixes the ghcpkg05 test failure.
(ghc-pkg check was complaining because the mtl docs didn't exist).

some more tests to run (those with reqlib('mtl')) and serves as an
extra sanity check on Cabal and the bindist.

If we aren't validating and mk/build.mk doesn't exist then boot
prints a warning, pointing at instructions for setting up mk/build.mk.

rather then the bootstrapping compiler. This fixes problems where the
bootstrapping compiler dynamically links against libraries not on the
target machine.

You can now run "make test" in the root, and the fast testsuite will be
run with cleaning enabled. It will also put the summary in
testsuite_summary.txt.

This stops us having to worry about sh/sed/... portability.

on Windows, as they are now in-tree

Cleaning should always succeed now