-#################################################################################
-#
-# fptools/Makefile
-#
-# This is the main Makefile for fptools.
-#
-#################################################################################
-TOP=.
-include $(TOP)/mk/boilerplate.mk
-SRC_DIST_DIR=$(shell pwd)/$(SRC_DIST_NAME)
+ifeq "$(wildcard distrib/)" ""
-SUBDIRS = $(ProjectsToBuild)
+# We're in a bindist
-#
-# Files to include in fptools source distribution
-#
-SRC_DIST_DIRS += mk $(ProjectsToBuild)
-SRC_DIST_FILES += configure.in config.guess config.sub configure README ANNOUNCE NEWS INSTALL Makefile
+.PHONY: default
+default:
+ @echo 'Run "make install" to install'
+ @false
+.PHONY: install
+install:
+ $(MAKE) -r --no-print-directory -f ghc.mk install BINDIST=YES NO_INCLUDE_DEPS=YES
+.PHONY: show
+show:
+ $(MAKE) -r --no-print-directory -f ghc.mk $@
+
+else
+
+# The problem we need to solve is as follows.
#
-# Making a binary distribution
+# GNU make supports included Makefiles, and it is clever enough to try
+# to update those Makefiles when they are out-of-date or missing. It
+# first reads all the Makefiles, and then tries to build each one if
+# it is out-of-date, using the rules in the Makefiles themselves.
+# When it has brought all the Makefiles up-to-date, it restarts itself
+# to read the newly-generated Makefiles.
#
-BIN_DIST_TMPDIR=$(shell pwd)
-BIN_DIST_NAME=fptools
+# This works fine, unless there are dependencies *between* the
+# Makefiles. For example in the GHC build, for each package we have a
+# package-data.mk file which is generated by the ghc-cabal program,
+# and we have a .depend file. The .depend file cannot be generated
+# until package-data.mk has been generated and make has been restarted
+# to read in its contents, because it is the package-data.mk file that
+# tells us which modules are in the package. But make always makes
+# all the Makefiles before restarting - it doesn't take into account a
+# dependency between Makefiles and restart itself earlier.
+
+# Consider the following makefile:
+# --------------------
+# all :
#
-# list of toplevel `projects' to include in binary distrib.
+# include inc1.mk
+#
+# inc1.mk : Makefile
+# echo "X = C" >$@
+#
+# include inc2.mk
+#
+# inc2.mk : inc1.mk
+# echo "Y = $(X)" >$@
+# --------------------
+
+# Now try it:
+#
+# $ make -f fail.mk
+# fail.mk:3: inc1.mk: No such file or directory
+# fail.mk:8: inc2.mk: No such file or directory
+# echo "X = C" >inc1.mk
+# echo "Y = " >inc2.mk
+# make: Nothing to be done for `all'.
+
+# make built both inc1.mk and inc2.mk without restarting itself
+# between the two (even though we added a dependency on inc1.mk from
+# inc2.mk).
#
-BIN_DIST_DIRS=ghc
+# The solution we adopt in the GHC build system is essentially this:
-binary-dist:: binary-dist-pre
+# --------------------
+# PHASE = 0
+#
+# ifeq "$(PHASE)" "0"
+# all :
+# $(MAKE) PHASE=1
+# else
+# all :
+# endif
+#
+# -include inc1.mk
+#
+# inc1.mk : Makefile
+# echo "X = C" >$@
+#
+# ifneq "$(PHASE)" "0"
+# include inc2.mk
+#
+# inc2.mk : inc1.mk
+# echo "Y = $(X)" >$@
+# endif
+#
+# clean :
+# rm -f inc1.mk inc2.mk
+# --------------------
-BIN_DIST_TOP= distrib/Makefile-bin.in \
- distrib/configure-bin.in \
- distrib/README \
- distrib/INSTALL \
- distrib/ANNOUNCE
+# That is, every time make is invoked, we force it to update inc1.mk
+# and then restart. In the GHC build system we need to divide the
+# build into 4 phases in fact, with a restart between each phase. See
+# ghc.mk for the details on what happens in each phase and why.
-binary-dist::
- @for i in $(BIN_DIST_TOP); do \
- @echo cp $$i $(BIN_DIST_TMPDIR)/$(BIN_DIST_NAME) \
- cp $$i $(BIN_DIST_TMPDIR)/$(BIN_DIST_NAME) \
- done;
+default : all
+ @:
-#
-# Creating and copying the documentation into the bin-dist tree.
-#
-binary-dist::
- $(MKDIRHIER) $(BIN_DIST_TMPDIR)/$(BIN_DIST_NAME)/html
- $(MKDIRHIER) $(BIN_DIST_TMPDIR)/$(BIN_DIST_NAME)/dvi
- $(MKDIRHIER) $(BIN_DIST_TMPDIR)/$(BIN_DIST_NAME)/info
- @echo "Making html documentation.."
- $(MAKE) -C docs --no-print-directory $(MFLAGS) html
- cp docs/html/* $(BIN_DIST_TMPDIR)/$(BIN_DIST_NAME)/html
- @echo "Making dvi files.."
- $(MAKE) -C docs --no-print-directory $(MFLAGS) dvi
- cp docs/*.dvi $(BIN_DIST_TMPDIR)/$(BIN_DIST_NAME)/dvi
- @echo "Making info files.."
- $(MAKE) -C docs --no-print-directory $(MFLAGS) info
- cp docs/*.info* $(BIN_DIST_TMPDIR)/$(BIN_DIST_NAME)/info
-
-dist :: dist-pre
-include $(TOP)/mk/target.mk
-dist :: dist-post
+# No need to update makefiles for these targets:
+REALGOALS=$(filter-out clean clean_% distclean maintainer-clean show,$(MAKECMDGOALS))
+
+# NB. not the same as saying '%: ...', which doesn't do the right thing:
+# it does nothing if we specify a target that already exists.
+.PHONY: $(REALGOALS)
+$(REALGOALS) all:
+ @echo "===--- updating makefiles phase 0"
+ $(MAKE) -r --no-print-directory -f ghc.mk phase=0 just-makefiles
+ @echo "===--- updating makefiles phase 1"
+ $(MAKE) -r --no-print-directory -f ghc.mk phase=1 just-makefiles
+ @echo "===--- updating makefiles phase 2"
+ $(MAKE) -r --no-print-directory -f ghc.mk phase=2 just-makefiles
+ @echo "===--- updating makefiles phase 3"
+ $(MAKE) -r --no-print-directory -f ghc.mk phase=3 just-makefiles
+ @echo "===--- finished updating makefiles"
+ $(MAKE) -r --no-print-directory -f ghc.mk $@
+
+binary-dist:
+ rm -f bindist-list
+ $(MAKE) -r --no-print-directory -f ghc.mk bindist BINDIST=YES
+ $(MAKE) -r --no-print-directory -f ghc.mk binary-dist
+
+clean distclean maintainer-clean:
+ $(MAKE) -r --no-print-directory -f ghc.mk $@
+ test ! -d testsuite || $(MAKE) -C testsuite $@
+
+$(filter clean_%, $(MAKECMDGOALS)) : clean_% :
+ $(MAKE) -r --no-print-directory -f ghc.mk $@
+
+show:
+ $(MAKE) -r --no-print-directory -f ghc.mk $@
+
+# If the user says 'make A B', then we don't want to invoke two
+# instances of the rule above in parallel:
+.NOTPARALLEL:
+
+endif
projects / ghc-hetmet.git / blobdiff