GitLab

We no longer use dummy-ghc; instead we don't configure most packages
until the stage1 compiler is available.
  
We also now use Cabal for building the ghc-bin package.

There are a couple more sanity checks too.

This fixes the "does unsetenv return void" test in the unix package on
OS X, if I tell it to make 10.4-compatible binaries. The test uses
CPPFLAGS but not CFLAGS, so it thought it returned int (as it was
in 10.5-mode), but the C compiler (using CFLAGS, so in 10.4 mode)
thought it returned void.

I also added CONF_LD_OPTS_STAGE$3 to the list of things in LDFLAGS,
which looks like an accidental ommission.

If the GHCi .o lib doesn't exist, load the .a instead

saying

  make TRACE=1

prints most of the macro calls and their arguments.  It's easy to
trace new macros; see rules/trace.mk.

When using the bootstrapping compiler, we now explicitly constrain
the version of boot packages (Cabal, extensible-exceptions, etc) to the
in-tree version, so that the build system is less fragile should the
user have a newer version installed for the bootstrapping compiler.

- Needed to get arch-dependent options, eg, on Snow Leopard

It confuses the build system.

Should help to fix the build on OpenBSD (together with a corresponding
patch to libraries/base).

When configuring packages, enable library profiling and shared libraries
based on the ways in GhcLibWays.

When configure tests for a feature it may not generate warning-free C
code, and thus may think that the feature doesn't exist if -Werror is
on.

I've also added some missing $s to some makefiles. These aren't
technically necessary, but it's nice to be consistent.

It tried to do this already, but the make variable name was wrong.

we also have $1_$2_CONFIGURE_OPTS, which is used.

when we configure ghc with --enable-shared

# -----------------------------------------------------------------------------
#
# (c) 2009 The University of Glasgow
#
# This file is part of the GHC build system.
#
# To understand how the build system works and how to modify it, see
#      http://hackage.haskell.org/trac/ghc/wiki/Building/Architecture
#      http://hackage.haskell.org/trac/ghc/wiki/Building/Modifying
#
# -----------------------------------------------------------------------------