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# -----------------------------------------------------------------------------
#
# (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
#
# -----------------------------------------------------------------------------
# Bootstrapping ghc-cabal
# Euch, hideous hack:
# XXX This should be in a different Makefile
CABAL_DOTTED_VERSION := $(shell grep "^Version:" libraries/Cabal/Cabal.cabal | sed "s/^Version: //")
CABAL_VERSION := $(subst .,$(comma),$(CABAL_DOTTED_VERSION))
CABAL_CONSTRAINT := --constraint="Cabal == $(CABAL_DOTTED_VERSION)"
$(GHC_CABAL_INPLACE) : $(GHC_CABAL_DIR)/dist/build/tmp/ghc-cabal$(exeext) | $$(dir $$@)/.
"$(CP)" $< $@
$(GHC_CABAL_DIR)/dist/build/tmp/ghc-cabal$(exeext): $(wildcard libraries/Cabal/Distribution/*/*/*.hs)
$(GHC_CABAL_DIR)/dist/build/tmp/ghc-cabal$(exeext): $(wildcard libraries/Cabal/Distribution/*/*.hs)
$(GHC_CABAL_DIR)/dist/build/tmp/ghc-cabal$(exeext): $(wildcard libraries/Cabal/Distribution/*.hs)
$(GHC_CABAL_DIR)/dist/build/tmp/ghc-cabal$(exeext): $(GHC_CABAL_DIR)/ghc-cabal.hs | $$(dir $$@)/. bootstrapping/.
"$(GHC)" $(SRC_HC_OPTS) --make $(GHC_CABAL_DIR)/ghc-cabal.hs -o $@ \
-Wall $(WERROR) \
-DCABAL_VERSION=$(CABAL_VERSION) \
-odir bootstrapping \
-hidir bootstrapping \
-ilibraries/Cabal \
-ilibraries/filepath \
-ilibraries/hpc
touch $@
# touch is required, because otherwise if mkdirhier is newer, we
# repeatedly rebuild ghc-cabal.
$(eval $(call clean-target,$(GHC_CABAL_DIR),dist,\
$(GHC_CABAL_DIR)/dist bootstrapping))
$(eval $(call all-target,$(GHC_CABAL_DIR),$(GHC_CABAL_INPLACE)))
# -----------------------------------------------------------------------------
# dummy-ghc
# This is a tiny program to fool Cabal's configure that we have a
# stage1 GHC, which lets us configure all the packages before we've
# build stage1.
$(GHC_CABAL_DIR)_dist-dummy-ghc_MODULES = dummy-ghc
$(GHC_CABAL_DIR)_dist-dummy-ghc_PROG = dummy-ghc$(exeext)
# depend on project.mk, so we pick up the new version number if it changes.
$(GHC_CABAL_DIR)/dist-dummy-ghc/build/dummy-ghc.hs : $(GHC_CABAL_DIR)/ghc.mk $(MKDIRHIER) mk/project.mk compiler/main/DynFlags.hs
"$(MKDIRHIER)" $(dir $@)
"$(RM)" $(RM_OPTS) $@
echo 'import System.Environment' >> $@
echo 'import System.Cmd' >> $@
echo 'import System.Exit' >> $@
echo 'main :: IO ()' >> $@
echo 'main = do args <- getArgs' >> $@
echo ' case args of' >> $@
echo ' ["--numeric-version"] ->' >> $@
echo ' putStrLn "$(ProjectVersion)"' >> $@
echo ' ["--supported-languages"] ->' >> $@
echo ' mapM_ putStrLn extensions' >> $@
echo ' _ ->' >> $@
echo ' do e <- rawSystem "$(GHC_STAGE0)" args' >> $@
echo ' exitWith e' >> $@
# This unpleasant sed script grabs the lines between the
# xFlags ::
# line and the
# ]
# line of compiler/main/DynFlags.hs, and if they look like
# ( "PostfixOperators", ...
# then it translates them into
# ["PostfixOperators"] ++
echo 'extensions :: [String]' >> $@
echo 'extensions =' >> $@
sed '/^xFlags/,/]/s/^[[:space:]]*([[:space:]]*\("[^"]*"\)[^"]*/ [\1] ++/p;d' compiler/main/DynFlags.hs >> $@
echo ' []' >> $@
# We don't build dummy-ghc with Cabal, so we need to pass -package
# flags manually
utils/ghc-cabal_dist-dummy-ghc_HC_OPTS = -package process
$(eval $(call build-prog,utils/ghc-cabal,dist-dummy-ghc,0))
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