# -----------------------------------------------------------------------------
+#
+# (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:
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)
- $(MKDIRHIER) $(dir $@)
- $(CP) $< $@
+$(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 $(MKDIRHIER)
- $(MKDIRHIER) bootstrapping
- $(MKDIRHIER) $(dir $@)
- $(GHC) --make $(GHC_CABAL_DIR)/ghc-cabal.hs -o $@ \
+$(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 \
$(GHC_CABAL_DIR)_dist-dummy-ghc_MODULES = dummy-ghc
$(GHC_CABAL_DIR)_dist-dummy-ghc_PROG = dummy-ghc$(exeext)
-$(GHC_CABAL_DIR)/dist-dummy-ghc/build/dummy-ghc.hs : $(GHC_CABAL_DIR)/ghc.mk $(MKDIRHIER)
- $(MKDIRHIER) $(dir $@)
- echo "import System.Environment; import System.Cmd; import System.Exit" >$@
- echo "main = do args <- getArgs; if args == [\"--numeric-version\"] then putStrLn \"$(ProjectVersion)\" else do e <- rawSystem \"$(GHC_STAGE0)\" args; exitWith e" >>$@
+# depend on project.mk, so we pick up the new version number if it changes.
+$(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"] ++
+# Tabs are a pain to handle portably with sed, so rather than worrying
+# about them we just use tr to remove them all before we start.
+ echo 'extensions :: [String]' >> $@
+ echo 'extensions =' >> $@
+ '$(TR)' -d '\t' < compiler/main/DynFlags.hs | '$(SED)' '/^xFlags/,/]/s/^ *( *\("[^"]*"\)[^"]*/ [\1] ++/p;d' >> $@
+ echo ' []' >> $@
# We don't build dummy-ghc with Cabal, so we need to pass -package
# flags manually