X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=utils%2Fghc-cabal%2Fghc.mk;h=b238db91ba6f878031e7aba61be56a51f268a6dc;hb=f4b727487a65e6b611bbaafbd2207bd63a8df706;hp=c0fd0f336d7930f134e90d9e07bff89bb7c8fab3;hpb=34cc75e1a62638f2833815746ebce0a9114dc26b;p=ghc-hetmet.git

diff --git a/utils/ghc-cabal/ghc.mk b/utils/ghc-cabal/ghc.mk
index c0fd0f3..b238db9 100644
--- a/utils/ghc-cabal/ghc.mk
+++ b/utils/ghc-cabal/ghc.mk
@@ -1,4 +1,15 @@
 # -----------------------------------------------------------------------------
+#
+# (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:
@@ -7,14 +18,15 @@ CABAL_DOTTED_VERSION := $(shell grep "^Version:" libraries/Cabal/Cabal.cabal | s
 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 \
@@ -42,10 +54,35 @@ $(eval $(call all-target,$(GHC_CABAL_DIR),$(GHC_CABAL_INPLACE)))
 $(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"] ++
+	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