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### @configure_input@

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# Copyright (C) 2010-2016 Free Software Foundation, Inc.
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# This file is part of GNU Emacs.

# GNU Emacs is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.

# GNU Emacs is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.

# You should have received a copy of the GNU General Public License
# along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.

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### Commentary:

## Some targets:
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## check: re-run all tests, writing to .log files.
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## check-maybe: run all tests whose .log file needs updating
## filename.log: run tests from filename.el(c) if .log file needs updating
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## filename: re-run tests from filename.el(c), with no logging
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### Code:

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SHELL = @SHELL@
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srcdir = @srcdir@
VPATH = $(srcdir)

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SEPCHAR = @SEPCHAR@
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# We never change directory before running Emacs, so a relative file
# name is fine, and makes life easier.  If we need to change
# directory, we can use emacs --chdir.
EMACS = ../../src/emacs
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EMACS_EXTRAOPT=

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# Command line flags for Emacs.
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# Apparently MSYS bash would convert "-L :" to "-L ;" anyway,
# but we might as well be explicit.
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EMACSOPT = -batch --no-site-file --no-site-lisp -L "$(SEPCHAR)$(srcdir)" $(EMACS_EXTRAOPT)
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# Prevent any settings in the user environment causing problems.
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unexport EMACSDATA EMACSDOC EMACSPATH GREP_OPTIONS
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## To run tests under a debugger, set this to eg: "gdb --args".
GDB =

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# The locale to run tests under.  Tests should work if this is set to
# any supported locale.  Use the C locale by default, as it should be
# supported everywhere.
TEST_LOCALE = C

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# The actual Emacs command run in the targets below.
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# Prevent any setting of EMACSLOADPATH in user environment causing problems.
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emacs = EMACSLOADPATH= LC_ALL=$(TEST_LOCALE) EMACS_TEST_DIRECTORY=$(srcdir) \
 $(GDB) "$(EMACS)" $(EMACSOPT)
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.PHONY: all check
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all: check
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%.elc: %.el
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	@echo Compiling $<
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	@$(emacs) -f batch-byte-compile $<

## Ignore any test errors so we can continue to test other files.
## But compilation errors are always fatal.
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WRITE_LOG = > $@ 2>&1 || { stat=ERROR; cat $@; }; echo $$stat: $@
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## I'd prefer to use -emacs -f ert-run-tests-batch-and-exit rather
## than || true, since the former makes problems more obvious.
## I'd also prefer to @-hide the grep part and not the
## ert-run-tests-batch-and-exit part.
##
## We need to use $loadfile because:
## i) -L :$srcdir -l basename does not work, because we have files whose
## basename duplicates a file in lisp/ (eg eshell.el).
## ii) Although -l basename will automatically load .el or .elc,
## -l ./basename treats basename as a literal file (it would be nice
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## to change this; bug#17848 - if that gets done, this can be simplified).
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##
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## Beware: it approximates 'no-byte-compile', so watch out for false-positives!
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SELECTOR_DEFAULT=(quote (not (tag :expensive-test)))
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SELECTOR_EXPENSIVE=nil
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SELECTOR=
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%.log: ${srcdir}/%.el
	@if grep '^;.*no-byte-compile: t' $< > /dev/null; then \
	  loadfile=$<; \
	else \
	  loadfile=$<c; \
	  ${MAKE} $$loadfile; \
	fi; \
	echo Testing $$loadfile; \
	stat=OK ; \
	$(emacs) -l ert -l $$loadfile \
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	  --eval "(ert-run-tests-batch-and-exit ${SELECTOR})" ${WRITE_LOG}
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ELFILES = $(sort $(wildcard ${srcdir}/*.el))
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LOGFILES = $(patsubst %.el,%.log,$(notdir ${ELFILES}))
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TESTS = ${LOGFILES:.log=}
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## If we have to interrupt a hanging test, preserve the log so we can
## see what the problem was.
.PRECIOUS: %.log

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.PHONY: ${TESTS}

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## The short aliases that always re-run the tests, with no logging.
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define test_template
$(1):
	@test ! -f $(1).log || mv $(1).log $(1).log~
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	@${MAKE} $(1).log WRITE_LOG=
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endef

$(foreach test,${TESTS},$(eval $(call test_template,${test})))

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## Rerun default tests.
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check:
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	@${MAKE} check-doit SELECTOR="${SELECTOR_DEFAULT}"
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## Rerun also expensive tests.
.PHONY: check-expensive
check-expensive:
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	@${MAKE} check-doit SELECTOR="${SELECTOR_EXPENSIVE}"

## Re-run all the tests every time.
.PHONY: check-doit
check-doit:
	-@for f in *.log; do test ! -f $$f || mv $$f $$f~; done
	@${MAKE} check-maybe
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## Only re-run tests whose .log is older than the test.
.PHONY: check-maybe
check-maybe: ${LOGFILES}
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	$(emacs) -l ert -f ert-summarize-tests-batch-and-exit $^

.PHONY: mostlyclean clean bootstrap-clean distclean maintainer-clean

clean mostlyclean:
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	-rm -f *.log *.log~
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bootstrap-clean: clean
	-rm -f ${srcdir}/*.elc

distclean: clean
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	rm -f Makefile
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maintainer-clean: distclean bootstrap-clean

# Makefile ends here.