From 5971cecb8634e95278295c8c563bebd9700509e3 Mon Sep 17 00:00:00 2001
From: simonmar <unknown>
Date: Tue, 13 Sep 2005 12:50:59 +0000
Subject: [PATCH] [project @ 2005-09-13 12:50:59 by simonmar] Never use an
 installed Cabal package when building GHC (except when
 bootstrapping in stages 2 & 3).  This insulates us from
 changes the user may have made to their Cabal installation.

---
 ghc/compiler/Makefile      |    4 +++-
 ghc/lib/compat/Makefile    |   29 ++++++-----------------------
 ghc/lib/compat/compat.mk   |    5 +++++
 ghc/utils/ghc-pkg/Makefile |    4 ----
 4 files changed, 14 insertions(+), 28 deletions(-)

diff --git a/ghc/compiler/Makefile b/ghc/compiler/Makefile
index bed555c..2d47f04 100644
--- a/ghc/compiler/Makefile
+++ b/ghc/compiler/Makefile
@@ -491,7 +491,9 @@ PKG_DEPENDS += unix
 endif
 endif
 
-ifneq "$(findstring YES, $(bootstrapped) $(ghc_ge_603))" ""
+# We use the Cabal package in stages 2/3 only; in stage 1 we're using
+# the libcompat library which provides the Cabal modules.
+ifneq "$(stage)" "1"
 SRC_HC_OPTS += -package Cabal
 PKG_DEPENDS += Cabal
 endif
diff --git a/ghc/lib/compat/Makefile b/ghc/lib/compat/Makefile
index 95277c4..9cc0395 100644
--- a/ghc/lib/compat/Makefile
+++ b/ghc/lib/compat/Makefile
@@ -41,32 +41,15 @@ UseGhcForCc = YES
 SRC_HC_OPTS += $(filter-out -D%, $(GhcHcOpts)) 
 
 ifeq "$(ghc_ge_603)" "YES"
-# These modules are all provided in GHC 6.3+
+# These modules are provided in GHC 6.3+
 EXCLUDED_SRCS += \
-	System/Directory/Internals.hs \
-	Distribution/Compat/FilePath.hs \
-	Distribution/Compat/ReadP.hs \
-	Distribution/GetOpt.hs \
-	Distribution/InstalledPackageInfo.hs \
-	Distribution/License.hs \
-	Distribution/Package.hs \
-	Distribution/ParseUtils.hs \
-	Distribution/Compiler.hs \
-	Distribution/Version.hs \
-	Language/Haskell/Extension.hs
+	System/Directory/Internals.hs
 
 SRC_MKDEPENDHS_OPTS += \
-	-optdep--exclude-module=System.Directory.Internals \
-	-optdep--exclude-module=Distribution.Compat.FilePath \
-	-optdep--exclude-module=Distribution.Compat.ReadP \
-	-optdep--exclude-module=Distribution.GetOpt \
-	-optdep--exclude-module=Distribution.InstalledPackageInfo \
-	-optdep--exclude-module=Distribution.License \
-	-optdep--exclude-module=Distribution.Package \
-	-optdep--exclude-module=Distribution.ParseUtils \
-	-optdep--exclude-module=Distribution.Compiler \
-	-optdep--exclude-module=Distribution.Version \
-	-optdep--exclude-module=Language.Haskell.Extension
+	-optdep--exclude-module=System.Directory.Internals
+
+# GHC 6.3+ has Cabal, but we're replacing it:
+SRC_HC_OPTS += -ignore-package Cabal
 endif
 
 # Some explicit dependencies, needed because ghc -M can't discover the
diff --git a/ghc/lib/compat/compat.mk b/ghc/lib/compat/compat.mk
index c85e6df..156f033 100644
--- a/ghc/lib/compat/compat.mk
+++ b/ghc/lib/compat/compat.mk
@@ -10,6 +10,11 @@
 SRC_HC_OPTS += -i$(GHC_LIB_COMPAT_DIR)
 SRC_LD_OPTS += -L$(GHC_LIB_COMPAT_DIR) -lghccompat
 
+# Do *not* use the installed Cabal:
+ifeq "$(ghc_ge_603)" "YES"
+SRC_HC_OPTS += -ignore-package Cabal
+endif
+
 # And similarly for when booting from .hc files:
 HC_BOOT_LD_OPTS += -L$(GHC_LIB_COMPAT_DIR)
 HC_BOOT_LIBS += -lghccompat
diff --git a/ghc/utils/ghc-pkg/Makefile b/ghc/utils/ghc-pkg/Makefile
index 2e09ab0..d513a91 100644
--- a/ghc/utils/ghc-pkg/Makefile
+++ b/ghc/utils/ghc-pkg/Makefile
@@ -23,10 +23,6 @@ ifeq "$(ghc_ge_504)" "NO"
 SRC_HC_OPTS +=  -package lang -package util -package text
 endif
 
-ifeq "$(ghc_ge_603)" "YES"
-SRC_HC_OPTS +=  -package Cabal
-endif
-
 # On Windows, ghc-pkg is a standalone program
 # ($bindir/ghc-pkg.exe), whereas on Unix it needs a wrapper script
 # to pass the appropriate flag to the real binary
-- 
1.7.10.4