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# -----------------------------------------------------------------------------
#
# (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
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#      http://ghc.haskell.org/trac/ghc/wiki/Building/Architecture
#      http://ghc.haskell.org/trac/ghc/wiki/Building/Modifying
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#
# -----------------------------------------------------------------------------
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# Eliminate use of the built-in implicit rules, and clear out the default list
# of suffixes for suffix rules. Speeds up make quite a bit. Both are needed
# for the shortest `make -d` output.
# Don't set --no-builtin-variables; some rules might stop working if you do
# (e.g. 'make clean' in testsuite/ currently relies on an implicit $RM).
MAKEFLAGS += --no-builtin-rules
.SUFFIXES:

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# -----------------------------------------------------------------------------
# Sanitize environment

# See Trac #11530
export GREP_OPTIONS :=

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ifneq "$(filter maintainer-clean distclean clean clean_% help,$(MAKECMDGOALS))" ""
-include mk/config.mk
else
include mk/config.mk
ifeq "$(ProjectVersion)" ""
$(error Please run ./configure first)
endif
endif

include mk/custom-settings.mk


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ifeq "$(wildcard distrib/)" ""
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# We're in a bindist
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.PHONY: default
default:
	@echo 'Run "make install" to install'
	@false
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.PHONY: install show
install show:
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	$(MAKE) --no-print-directory -f ghc.mk $@ BINDIST=YES NO_INCLUDE_DEPS=YES
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# Note [install-strip]
#
# install-strip is like install, but it strips the executable files while
# installing them.
#
# From http://www.gnu.org/prep/standards/html_node/Standard-Targets.html:
#
#   "install-strip should not strip the executables in the build directory
#   which are being copied for installation. It should only strip the copies
#   that are installed. "

.PHONY: install-strip
install-strip:
	# See Note [install-strip].
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	$(MAKE) --no-print-directory -f ghc.mk INSTALL_PROGRAM='$(INSTALL_PROGRAM) -s' install BINDIST=YES NO_INCLUDE_DEPS=YES
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else
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.PHONY: default
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default : all
	@:
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# For help, type 'make help'
.PHONY: help
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help:
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	@cat MAKEHELP.md
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# Verify that stage 0 LLVM backend isn't affected by Bug #9439 if needed
ifeq "$(GHC_LLVM_AFFECTED_BY_9439)" "1"
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ifneq "$(findstring -fllvm,$(SRC_HC_OPTS) $(GhcHcOpts) $(GhcStage1HcOpts))" ""
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$(error Stage 0 compiler is affected by Bug #9439. Refusing to bootstrap with -fllvm)
endif
endif

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# No need to update makefiles for these targets:
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# (the ones we're filtering out)
REALGOALS=$(filter-out \
    binary-dist \
    binary-dist-prep \
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    install-strip \
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    sdist sdist-ghc \
    sdist-ghc-prep \
    sdist-windows-tarballs \
    sdist-windows-tarballs-prep \
    sdist-testsuite \
    sdist-testsuite-prep \
    bootstrapping-files \
    framework-pkg \
    clean \
    clean_% \
    distclean \
    maintainer-clean \
    show \
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    show! \
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    echo \
    help \
    test \
    fulltest \
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    slowtest \
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    fasttest \
  ,$(MAKECMDGOALS))
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# configure touches certain files even if they haven't changed.  This
# can mean a lot of unnecessary recompilation after a re-configure, so
# here we cache the old versions of these files so we can restore the
# timestamps.
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%.old:  %
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	@set -x && test -f $@ && cmp -s $< $@ || cp -p $< $@
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	touch -r $@ $<

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# NB. not the same as saying '%: ...', which doesn't do the right thing:
# it does nothing if we specify a target that already exists.
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.PHONY: $(REALGOALS) all
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$(REALGOALS) all: mk/config.mk.old mk/project.mk.old compiler/ghc.cabal.old
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ifneq "$(OMIT_PHASE_0)" "YES"
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	@echo "===--- building phase 0"
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	$(MAKE) --no-print-directory -f ghc.mk phase=0 phase_0_builds
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endif
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ifneq "$(OMIT_PHASE_1)" "YES"
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	@echo "===--- building phase 1"
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	$(MAKE) --no-print-directory -f ghc.mk phase=1 phase_1_builds
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endif
	@echo "===--- building final phase"
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	$(MAKE) --no-print-directory -f ghc.mk phase=final $@
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.PHONY: binary-dist
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binary-dist: binary-dist-prep
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	mv bindistprep/*.tar.$(TAR_COMP_EXT) .
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.PHONY: binary-dist-prep
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binary-dist-prep:
ifeq "$(mingw32_TARGET_OS)" "1"
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	$(MAKE) --no-print-directory -f ghc.mk windows-binary-dist-prep
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else
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	rm -f bindist-list
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	$(MAKE) --no-print-directory -f ghc.mk bindist-list BINDIST=YES
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	$(MAKE) --no-print-directory -f ghc.mk unix-binary-dist-prep
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endif
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.PHONY: install-strip
install-strip:
	# See Note [install-strip].
	$(MAKE) --no-print-directory -f ghc.mk INSTALL_PROGRAM='$(INSTALL_PROGRAM) -s' install

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.PHONY: sdist sdist-ghc sdist-ghc-prep sdist-windows-tarballs sdist-windows-tarballs-prep sdist-testsuite sdist-testsuite-prep
# Just running `./boot && ./configure && make sdist` should work, so skip
# phase 0 and 1 and don't build any dependency files.
sdist sdist-ghc sdist-ghc-prep sdist-windows-tarballs sdist-windows-tarballs-prep sdist-testsuite sdist-testsuite-prep :
	$(MAKE) --no-print-directory -f ghc.mk $@ NO_INCLUDE_DEPS=YES NO_INCLUDE_PKGDATA=YES

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.PHONY: clean distclean maintainer-clean
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clean distclean maintainer-clean:
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	$(MAKE) --no-print-directory -f ghc.mk $@ CLEANING=YES
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	test ! -d testsuite || $(MAKE) -C testsuite $@
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.PHONY: $(filter clean_%,$(MAKECMDGOALS))
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$(filter clean_%, $(MAKECMDGOALS)) : clean_% :
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	$(MAKE) --no-print-directory -f ghc.mk $@ CLEANING=YES
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.PHONY: bootstrapping-files show echo
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bootstrapping-files show echo:
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	$(MAKE) --no-print-directory -f ghc.mk $@
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.PHONY: show!
show!:
	$(MAKE) --no-print-directory -f ghc.mk show NO_INCLUDE_PKGDATA=YES

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ifeq "$(darwin_TARGET_OS)" "1"
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.PHONY: framework-pkg
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framework-pkg:
	$(MAKE) -C distrib/MacOS $@
endif

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# If the user says 'make A B', then we don't want to invoke two
# instances of the rule above in parallel:
.NOTPARALLEL:
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endif
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# Note [validate and testsuite speed]
#
# There are 3 different validate and testsuite speed settings:
# fast, normal and slow.
#
#                              how    how   used
#           cd tests  config.  many   many  by
# validate  && make   speed=   tests  ways  whom
# =============================================================================
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# --fast    fast      2        some   1+exs Travis (to stay within time limit)
# --normal  test      1        all    1+exs Phabricator (slow takes too long?)
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# --slow    slow      0        all    all   Nightly (slow is ok)
#
#           accept    1        all    1
#
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# `--fast` and `--normal` run one default way, as well as any other ways which
# are explicitly requested by the test using extra_ways().
#
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# `make accept` should run all tests exactly once. There is no point in
# accepting a test for multiple ways, since it should produce the same output
# for all ways.
#
# To make sure all .stderr and .stdout files in the testsuite are never
# out-of-date, it is useful if Phabricator, via a normal `./validate` and `make
# test`, runs each test at least once.
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.PHONY: fasttest
fasttest:
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	$(MAKE) -C testsuite/tests CLEANUP=1 SUMMARY_FILE=../../testsuite_summary.txt fast
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.PHONY: test
test:
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	$(MAKE) -C testsuite/tests CLEANUP=1 SUMMARY_FILE=../../testsuite_summary.txt
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.PHONY: slowtest fulltest
slowtest fulltest:
	$(MAKE) -C testsuite/tests CLEANUP=1 SUMMARY_FILE=../../testsuite_summary.txt slow