# -----------------------------------------------------------------------------
-# $Id: Makefile,v 1.224 2002/10/09 15:03:48 simonpj Exp $
+# Main ghc/compiler Makefile
+
+# Targets:
+#
+# all builds stage1 compiler
+#
+# boot stage=N generate build dirs and dependencies for stage N.
+# NB. Must be done before 'make stageN'.
+# NB. Cannot 'make boot stage=2' until stage1 has
+# been built (similarly for stage3).
+#
+# stage1 (or stage=1) builds stage1 compiler
+# stage2 (or stage=2) builds stage2 compiler
+# stage3 (or stage=3) builds stage3 compiler
+#
TOP = ..
include $(TOP)/mk/boilerplate.mk
+#-----------------------------------------------------------------------------
+# Counting source code lines
+
USER_SRCS = $(filter-out $(DERIVED_SRCS),$(SRCS))
count :
./count_lines $(USER_SRCS)
#-----------------------------------------------------------------------------
# Building ghc different ways (default is just `normal' sequential)
+
WAYS=$(GhcCompilerWays)
# -----------------------------------------------------------------------------
+# Bootstrapping
+
+# The stage1/stage2/stage3 business is quite delicate. Here's how it works:
+#
+# - the variable $(stage) holds the current stage number. To build a
+# particular stage, you say 'make stage=N' where N is 1, 2, or 3.
+# N defaults to 1.
+#
+# - for stage N, object files and .hi files are placed inside
+# the directory stageN, in subdirectories as per the sources.
+#
+# - .hi-boot files are *linked* into the stageN tree, because in GHC 5.05+
+# the .hi-boot file must reside in the same place as the .hi file.
+#
+# - we use explicit -o and -ohi options to direct the output from C &
+# Haskell compilations.
+#
+# - we generate a different .depend file for each build. They need to be
+# different, because each stage might include different files: stage1
+# might not include GHCi, for example. For each stage, a normal .depend
+# file is generated, and then post-processed to add the correct stageN/
+# prefix to each object and .hi filename. The resulting .depend file
+# is named .depend-$(stage). See the end of this Makefile for details.
+#
+# - normal implicit rules don't work any more, because they're of the form
+#
+# %.o : %.hs
+#
+# whereas we really need
+#
+# stageN/%.o : %.hs
+#
+# so suffix.mk now defines the appropriate suffix rules when
+# $(odir) is set to a non-empty value. Here we set $(odir) to
+# stage1, stage2, or stage3.
+#
+# There are other plausible designs that might work, but each has different
+# problems:
+#
+# - using -odir and -hidir: GHC <= 4.08 doesn't support -hidir, and
+# anyway -odir puts all the objects in one directory (strips off the
+# subdirectory part), which eventually forces us to use VPATH to find
+# the sources. I have a really bad feeling about VPATH.
+#
+# - invoke make in the stageN subdirectory. This probably requires VPATH
+# too.
+#
+# - create a link tree. The problem with requiring link trees is that
+# Windows doesn't support symbolic links.
+
+boot ::
+ $(MKDIRHIER) stage$(stage)
+ for i in $(ALL_DIRS); do \
+ $(MKDIRHIER) stage$(stage)/$$i; \
+ done
+ for i in */*hi-boot*; do \
+ $(LN_S) -f ../../$$i stage$(stage)/$$i; \
+ done
+
+ifeq "$(stage)" ""
+stage=1
+endif
+
+ifeq "$(stage)" "1"
+HC=$(GHC)
+endif
+
+ifeq "$(stage)" "2"
+HC=$(GHC_STAGE1)
+endif
+
+ifeq "$(stage)" "3"
+HC=$(GHC_STAGE2)
+endif
+
+stage1 :
+ $(MAKE) stage=1
+
+stage2 :
+ $(MAKE) stage=2
+
+stage3 :
+ $(MAKE) stage=3
+
+odir=stage$(stage)
+
+SRC_HC_OPTS += $(patsubst %, -i$(odir)/%, $(ALL_DIRS))
+
+HS_OBJS = $(patsubst %, $(odir)/%, $(addsuffix .$(way_)o,$(basename $(HS_SRCS))))
+C_OBJS = $(patsubst %, $(odir)/%, $(addsuffix .$(way_)o,$(basename $(C_SRCS))))
+
+CLEAN_FILES += $(odir)/*/*.hi
+
+ifeq "$(stage)" "1"
+mostlyclean clean distclean maintainer-clean ::
+ $(MAKE) $@ stage=2
+ $(MAKE) $@ stage=3
+endif
+
+# -----------------------------------------------------------------------------
# Set HS_PROG
# Note: there have been reports of people running up against the ARG_MAX limit
#
ifneq "$(way)" "dll"
ifneq "$(TARGETPLATFORM)" "i386-unknown-mingw32"
-HS_PROG=ghc$(_way)-$(ProjectVersion)
+HS_PROG=$(odir)/ghc$(_way)-$(ProjectVersion)
else
-HS_PROG=ghc$(_way)
+HS_PROG=$(odir)/ghc$(_way)
endif
else
-HS_PROG=ghc-$(ProjectVersion)
+HS_PROG=$(odir)/ghc-$(ProjectVersion)
endif
# -----------------------------------------------------------------------------
bootstrapped = YES
compiling_with_4xx=NO
else
+ifneq "$(findstring $(stage), 2 3)" ""
+bootstrapped = YES
+compiling_with_4xx = NO
+else
bootstrapped = $(shell if (test $(GhcCanonVersion) -ge $(ProjectVersionInt) -a $(GhcPatchLevel) -ge $(ProjectPatchLevel)); then echo YES; else echo NO; fi)
compiling_with_4xx = $(shell if (test $(GhcCanonVersion) -lt 500); then echo YES; else echo NO; fi)
endif
+endif
# Only include GHCi if we're bootstrapping with at least version 411
ifeq "$(GhcWithInterpreter) $(bootstrapped)" "YES YES"
# -----------------------------------------------------------------------------
# Haskell compilations
-#
-# Compiler to use for building ghc, use the build tree
-# driver when booting.
-#
-HC=$(GHC)
-
-# magic from GNU make manual to convert a list of values
-# into a colon-separated list
-empty:=
-space:= $(empty) $(empty)
-
SRC_HC_OPTS += \
-cpp -fglasgow-exts -Rghc-timing \
- -I. -IcodeGen -InativeGen -Iparser \
- $(patsubst %, -i%, $(ALL_DIRS))
+ -I. -IcodeGen -InativeGen -Iparser
# Omitted: -I$(GHC_INCLUDE_DIR)
# We should have -I$(GHC_INCLUDE_DIR) in SRC_HC_OPTS,
# -----------------------------------------------------------------------------
# create ghc-inplace, a convenient way to run ghc from the build tree...
-all :: ghc-inplace
+all :: $(odir)/ghc-inplace ghc-inplace
-ghc-inplace : $(HS_PROG)
+$(odir)/ghc-inplace : $(HS_PROG)
@$(RM) $@
echo '#!/bin/sh' >>$@
echo exec $(FPTOOLS_TOP_ABS)/ghc/compiler/$(HS_PROG) '-B$(subst \,\\,$(FPTOOLS_TOP_ABS_PLATFORM))' '"$$@"' >>$@
chmod 755 $@
-CLEAN_FILES += ghc-inplace
+ghc-inplace : stage1/ghc-inplace
+ $(LN_S) $< $@
+
+CLEAN_FILES += $(odir)/ghc-inplace ghc-inplace
#-----------------------------------------------------------------------------
# install
#-----------------------------------------------------------------------------
# Include target-rule boilerplate
+# Don't use the default MKDEPENDHS stuff... we'll do our own, below
+MKDEPENDHS_SRCS =
+MKDEPENDC_SRCS =
+
include $(TOP)/mk/target.mk
+
+# -----------------------------------------------------------------------------
+# Dependencies
+
+MKDEPENDHS_HC_OPTS = $(shell echo $(HC_OPTS) | sed -e s@$(odir)/@@g)
+
+MKDEPENDHS=$(HC)
+
+# Must do this *after* including target.mk, because $(HS_SRCS) isn't set yet.
+depend :: $(HS_SRCS) $(C_SRCS)
+ $(MKDEPENDHS) -M -optdep-f -optdep.depend-BASE $(foreach way,$(WAYS),-optdep-s -optdep$(way)) $(foreach obj,$(MKDEPENDHS_OBJ_SUFFICES),-osuf $(obj)) $(MKDEPENDHS_OPTS) $(filter-out -split-objs, $(MKDEPENDHS_HC_OPTS)) $(HS_SRCS)
+ $(MKDEPENDC) -f .depend-BASE $(MKDEPENDC_OPTS) $(foreach way,$(WAYS),-s $(way)) -- $(CC_OPTS) -- $(C_SRCS)
+ $(PERL) -pe 's@^(\S*\.o)@stage$(stage)/$$1@g; s@(\S*\.hi)@stage$(stage)/$$1@g' <.depend-BASE >.depend-$(stage)
+
+-include .depend-$(stage)
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