X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=compiler%2Fghc.mk;h=8ecfa7df7e49427170afb13568e7cc59c99452b4;hb=7b45c46cbabe1288ea87bd9b94c57e010ed17e60;hp=a1969e8f98480518583cd29d67320d05df8e9a1b;hpb=34cc75e1a62638f2833815746ebce0a9114dc26b;p=ghc-hetmet.git

diff --git a/compiler/ghc.mk b/compiler/ghc.mk
index a1969e8..8ecfa7d 100644
--- a/compiler/ghc.mk
+++ b/compiler/ghc.mk
@@ -1,4 +1,16 @@
 # -----------------------------------------------------------------------------
+#
+# (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
+#
+# -----------------------------------------------------------------------------
+
+# -----------------------------------------------------------------------------
 # For expressing extra dependencies on source files
 
 define compiler-hs-dependency # args: $1 = module, $2 = dependency
@@ -392,6 +404,23 @@ compiler/stage3/package-data.mk : compiler/ghc.mk
 
 compiler_PACKAGE = ghc
 
+# Note [fiddle-stage1-version]
+# The version of the GHC package changes every day, since the
+# patchlevel is the current date.  We don't want to force
+# recompilation of the entire compiler when this happens, so for stage
+# 1 we omit the patchlevel from the version number.  For stage 2 we
+# have to include the patchlevel since this is the package we install,
+# however.
+#
+# Note: we also have to tweak the version number of the package itself
+# when it gets registered; see Note [munge-stage1-package-config]
+# below.
+ifneq "$(ProjectPatchLevel)" "0"
+define compiler_PACKAGE_MAGIC
+compiler_stage1_VERSION = $(subst .$(ProjectPatchLevel),,$(ProjectVersion))
+endef
+endif
+
 # haddocking only happens for stage2
 compiler_stage1_DO_HADDOCK = NO
 compiler_stage3_DO_HADDOCK = NO
@@ -428,5 +457,17 @@ $(compiler_stage3_depfile) : compiler/stage3/$(PLATFORM_H)
 $(compiler_stage1_depfile) : $(includes_H_CONFIG) $(includes_H_PLATFORM) $(includes_GHCCONSTANTS) $(includes_DERIVEDCONSTANTS) $(PRIMOP_BITS)
 $(compiler_stage2_depfile) : $(includes_H_CONFIG) $(includes_H_PLATFORM) $(includes_GHCCONSTANTS) $(includes_DERIVEDCONSTANTS) $(PRIMOP_BITS)
 $(compiler_stage3_depfile) : $(includes_H_CONFIG) $(includes_H_PLATFORM) $(includes_GHCCONSTANTS) $(includes_DERIVEDCONSTANTS) $(PRIMOP_BITS)
+
+# Note [munge-stage1-package-config]
+# Strip the date/patchlevel from the version of stage1.  See Note
+# [fiddle-stage1-version] above.
+ifneq "$(ProjectPatchLevel)" "0"
+compiler/stage1/inplace-pkg-config-munged: compiler/stage1/inplace-pkg-config
+	sed "s#.$(ProjectPatchLevel)##" <$< >$@
+	$(compiler_stage1_GHC_PKG) update --force $(compiler_stage1_GHC_PKG_OPTS) $@
+
+$(compiler_stage1_v_LIB) : compiler/stage1/inplace-pkg-config-munged
+endif
+
 endif