GHC new build system megapatch

1 files changed, 135 insertions, 0 deletions

diff --git a/rules/build-package.mk b/rules/build-package.mk
new file mode 100644
index 0000000000..4ca3c6e66f
--- /dev/null
+++ b/rules/build-package.mk
@@ -0,0 +1,135 @@
+
+# Build a package with the stage-1 compiler, multiple ways.  A typical
+# libraries/foo/ghc.mk will look like this:
+#
+# $(eval $(call build-package,libraries/base,dist-install))
+#
+# The package metadata is generated from the .cabal file and placed in
+# package-data.mk.  It will look something like this:
+#
+# libraries/base_dist_MODULES = GHC.Base Data.Tuple ...
+# libraries/base_dist_PACKAGE = base
+# libraries/base_dist_VERSION = 4.0.0.0
+# libraries/base_dist_HC_OPTS = -package ghc-prim-0.1.0.0 -XRank2Types ...
+# libraries/base_dist_C_SRCS  = cbits/PrelIOUtils.c ...
+# libraries/base_dist_S_SRCS  = cbits/foo.S ...
+# libraries/base_dist_CC_OPTS = -Iinclude ...
+# libraries/base_dist_LD_OPTS = -package ghc-prim-0.1.0.0
+
+# TODO: soext
+
+define build-package
+# $1 = dir
+# $2 = distdir
+# $3 = GHC stage to use (0 == bootstrapping compiler)
+
+ifeq "$$(findstring $3,0 1 2)" ""
+$$(error $1/$2: stage argument to build-package should be 0, 1, or 2)
+endif
+
+# We don't install things compiled by stage 0, so no need to put them
+# in the bindist.
+ifneq "$(BINDIST) $3" "YES 0"
+
+$(call all-target,$1,all_$1_$2)
+
+$(call clean-target,$1,$2,$1/$2)
+
+distclean : clean_$1_$2_config
+
+.PHONY: clean_$1_$2_config
+clean_$1_$2_config:
+	$(RM) $1/config.log $1/config.status $1/include/Hs*Config.h
+	$(RM) -r $1/autom4te.cache
+
+# --- CONFIGURATION
+
+$1_$2_USE_BOOT_LIBS = YES
+$(call package-config,$1,$2,$3)
+
+ifneq "$$(NO_INCLUDE_PKGDATA)" "YES"
+include $1/$2/package-data.mk
+endif
+
+ifeq "$$($1_$2_DISABLE)" "YES"
+
+ifeq "$$(DEBUG)" "YES"
+$$(warning $1/$2 disabled)
+endif
+
+# A package is disabled when we want to bring its package-data.mk file
+# up-to-date first, or due to other build dependencies.
+
+$(call all-target,$1_$2,$1/$2/package-data.mk)
+
+ifneq "$(BINDIST)" "YES"
+# We have a rule for package-data.mk only when the package is
+# disabled, because we want the build to fail if we haven't run phase 0.
+$(call build-package-data,$1,$2)
+endif
+
+else
+
+ifneq "$$(NO_INCLUDE_PKGDATA)" "YES"
+ifeq "$$($1_$2_VERSION)" ""
+$$(error phase ordering error: $1/$2 is enabled, but $1/$2/package-data.mk does not exist)
+endif
+endif
+
+# Sometimes we need to modify the automatically-generated package-data.mk
+# bindings in a special way for the GHC build system, so allow that here:
+$($1_PACKAGE_MAGIC)
+
+# Bootstrapping libs are only built one way
+ifeq "$3" "0"
+$1_$2_WAYS = v
+else
+$1_$2_WAYS = $$(GhcLibWays)
+endif
+
+$(call hs-sources,$1,$2)
+$(call c-sources,$1,$2)
+$(call includes-sources,$1,$2)
+
+# --- DEPENDENCIES
+
+# We must use a different dependency file if $(GhcLibWays) changes, so
+# encode the ways into the name of the file.
+$1_$2_WAYS_DASHED = $$(subst $$(space),,$$(patsubst %,-%,$$(strip $$($1_$2_WAYS))))
+$1_$2_depfile = $1/$2/build/.depend$$($1_$2_WAYS_DASHED)
+
+$(call build-dependencies,$1,$2)
+
+# --- BUILDING
+
+# We don't bother splitting the bootstrap packages (built with stage 0)
+ifeq "$$($1_$2_SplitObjs)" ""
+ifeq "$$(SplitObjs) $3" "YES 1"
+$1_$2_SplitObjs = YES
+else
+$1_$2_SplitObjs = NO
+endif
+endif
+
+# C and S files are built only once, not once per way
+$(call c-objs,$1,$2)
+$(call distdir-opts,$1,$2,$3)
+$(call c-suffix-rules,$1,$2,v,YES)
+
+# Now generate all the build rules for each way in this directory:
+$$(foreach way,$$($1_$2_WAYS),$$(eval $$(call build-package-way,$1,$2,$$(way),$3)))
+
+$(call haddock,$1,$2)
+
+endif # package-data.mk exists
+
+# Don't put bootstrapping packages in the bindist
+ifeq "$3" "1"
+BINDIST_EXTRAS += $1/*.cabal $1/$2/setup-config $1/LICENSE
+BINDIST_EXTRAS += $$($1_$2_INSTALL_INCLUDES_SRCS)
+endif
+
+endif
+
+endef
+