utils/ghc-cabal/ghc.mk

   1 # -----------------------------------------------------------------------------
   2 #
   3 # (c) 2009 The University of Glasgow
   4 #
   5 # This file is part of the GHC build system.
   6 #
   7 # To understand how the build system works and how to modify it, see
   8 #      http://hackage.haskell.org/trac/ghc/wiki/Building/Architecture
   9 #      http://hackage.haskell.org/trac/ghc/wiki/Building/Modifying
  10 #
  11 # -----------------------------------------------------------------------------
  12
  13 # Bootstrapping ghc-cabal
  14
  15 # Euch, hideous hack:
  16 # XXX This should be in a different Makefile
  17 CABAL_DOTTED_VERSION := $(shell grep "^Version:" libraries/Cabal/Cabal.cabal | sed "s/^Version: //")
  18 CABAL_VERSION := $(subst .,$(comma),$(CABAL_DOTTED_VERSION))
  19 CABAL_CONSTRAINT := --constraint="Cabal == $(CABAL_DOTTED_VERSION)"
  20
  21 $(GHC_CABAL_INPLACE) : $(GHC_CABAL_DIR)/dist/build/tmp/ghc-cabal$(exeext) | $$(dir $$@)/.
  22         "$(CP)" $< $@
  23
  24 $(GHC_CABAL_DIR)/dist/build/tmp/ghc-cabal$(exeext): $(GHC_CABAL_DIR)/ghc-cabal.hs | $$(dir $$@)/. bootstrapping/.
  25         "$(GHC)" $(SRC_HC_OPTS) --make $(GHC_CABAL_DIR)/ghc-cabal.hs -o $@ \
  26                -Wall $(WERROR) \
  27                -DCABAL_VERSION=$(CABAL_VERSION) \
  28                -odir  bootstrapping \
  29                -hidir bootstrapping \
  30                -ilibraries/Cabal \
  31                -ilibraries/filepath \
  32                -ilibraries/hpc
  33         touch $@
  34
  35 # touch is required, because otherwise if mkdirhier is newer, we
  36 # repeatedly rebuild ghc-cabal.
  37
  38 $(eval $(call clean-target,$(GHC_CABAL_DIR),dist,\
  39    $(GHC_CABAL_DIR)/dist bootstrapping))
  40
  41 $(eval $(call all-target,$(GHC_CABAL_DIR),$(GHC_CABAL_INPLACE)))
  42
  43 # -----------------------------------------------------------------------------
  44 # dummy-ghc
  45
  46 # This is a tiny program to fool Cabal's configure that we have a
  47 # stage1 GHC, which lets us configure all the packages before we've
  48 # build stage1.
  49
  50 $(GHC_CABAL_DIR)_dist-dummy-ghc_MODULES = dummy-ghc
  51 $(GHC_CABAL_DIR)_dist-dummy-ghc_PROG    = dummy-ghc$(exeext)
  52
  53 # depend on project.mk, so we pick up the new version number if it changes.
  54 $(GHC_CABAL_DIR)/dist-dummy-ghc/build/dummy-ghc.hs : $(GHC_CABAL_DIR)/ghc.mk $(MKDIRHIER) mk/project.mk compiler/main/DynFlags.hs
  55         "$(MKDIRHIER)" $(dir $@)
  56         "$(RM)" $(RM_OPTS) $@
  57         echo 'import System.Environment'                                  >> $@
  58         echo 'import System.Cmd'                                          >> $@
  59         echo 'import System.Exit'                                         >> $@
  60         echo 'main :: IO ()'                                              >> $@
  61         echo 'main = do args <- getArgs'                                  >> $@
  62         echo '          case args of'                                     >> $@
  63         echo '              ["--numeric-version"] ->'                     >> $@
  64         echo '                  putStrLn "$(ProjectVersion)"'             >> $@
  65         echo '              ["--supported-languages"] ->'                 >> $@
  66         echo '                  mapM_ putStrLn extensions'                >> $@
  67         echo '              _ ->'                                         >> $@
  68         echo '                  do e <- rawSystem "$(GHC_STAGE0)" args'   >> $@
  69         echo '                     exitWith e'                            >> $@
  70 # This unpleasant sed script grabs the lines between the
  71 #       xFlags ::
  72 # line and the
  73 #   ]
  74 # line of compiler/main/DynFlags.hs, and if they look like
  75 #   ( "PostfixOperators", ...
  76 # then it translates them into
  77 #   ["PostfixOperators"] ++
  78         echo 'extensions :: [String]'                                     >> $@
  79         echo 'extensions ='                                               >> $@
  80         sed '/^xFlags/,/]/{/^  (/{s/^[^"]*"/  ["/; s/"[^"]*$$/"] ++/; p}}; d' compiler/main/DynFlags.hs >> $@
  81         echo '  []'                                                       >> $@
  82
  83 # We don't build dummy-ghc with Cabal, so we need to pass -package
  84 # flags manually
  85 utils/ghc-cabal_dist-dummy-ghc_HC_OPTS = -package process
  86 $(eval $(call build-prog,utils/ghc-cabal,dist-dummy-ghc,0))
  87