Improved infrastructure for fast-rebuilding of parts of the tree
authorSimon Marlow <marlowsd@gmail.com>
Fri, 3 Jul 2009 07:45:27 +0000 (07:45 +0000)
committerSimon Marlow <marlowsd@gmail.com>
Fri, 3 Jul 2009 07:45:27 +0000 (07:45 +0000)
e.g.

  cd compiler
  make FAST=YES stage1/build/HscTypes.o

builds just the specified .o file, without rebuilding dependencies,
and omitting some of the makefile phases.  FAST=YES works anywhere, to
omit depenencies and phases.  'make fast' is shorthand for 'make
all FAST=YES'.


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