m4/ax_code_coverage.m4 - third_party/harfbuzz - Git at Google

 # ===========================================================================
 #     https://www.gnu.org/software/autoconf-archive/ax_code_coverage.html
 # ===========================================================================
 #
 # SYNOPSIS
 #
 #   AX_CODE_COVERAGE()
 #
 # DESCRIPTION
 #
 #   Defines CODE_COVERAGE_CPPFLAGS, CODE_COVERAGE_CFLAGS,
 #   CODE_COVERAGE_CXXFLAGS and CODE_COVERAGE_LIBS which should be included
 #   in the CPPFLAGS, CFLAGS CXXFLAGS and LIBS/LIBADD variables of every
 #   build target (program or library) which should be built with code
 #   coverage support. Also defines CODE_COVERAGE_RULES which should be
 #   substituted in your Makefile; and $enable_code_coverage which can be
 #   used in subsequent configure output. CODE_COVERAGE_ENABLED is defined
 #   and substituted, and corresponds to the value of the
 #   --enable-code-coverage option, which defaults to being disabled.
 #
 #   Test also for gcov program and create GCOV variable that could be
 #   substituted.
 #
 #   Note that all optimization flags in CFLAGS must be disabled when code
 #   coverage is enabled.
 #
 #   Usage example:
 #
 #   configure.ac:
 #
 #     AX_CODE_COVERAGE
 #
 #   Makefile.am:
 #
 #     @CODE_COVERAGE_RULES@
 #     my_program_LIBS = ... $(CODE_COVERAGE_LIBS) ...
 #     my_program_CPPFLAGS = ... $(CODE_COVERAGE_CPPFLAGS) ...
 #     my_program_CFLAGS = ... $(CODE_COVERAGE_CFLAGS) ...
 #     my_program_CXXFLAGS = ... $(CODE_COVERAGE_CXXFLAGS) ...
 #
 #   This results in a "check-code-coverage" rule being added to any
 #   Makefile.am which includes "@CODE_COVERAGE_RULES@" (assuming the module
 #   has been configured with --enable-code-coverage). Running `make
 #   check-code-coverage` in that directory will run the module's test suite
 #   (`make check`) and build a code coverage report detailing the code which
 #   was touched, then print the URI for the report.
 #
 #   In earlier versions of this macro, CODE_COVERAGE_LDFLAGS was defined
 #   instead of CODE_COVERAGE_LIBS. They are both still defined, but use of
 #   CODE_COVERAGE_LIBS is preferred for clarity; CODE_COVERAGE_LDFLAGS is
 #   deprecated. They have the same value.
 #
 #   This code was derived from Makefile.decl in GLib, originally licenced
 #   under LGPLv2.1+.
 #
 # LICENSE
 #
 #   Copyright (c) 2012, 2016 Philip Withnall
 #   Copyright (c) 2012 Xan Lopez
 #   Copyright (c) 2012 Christian Persch
 #   Copyright (c) 2012 Paolo Borelli
 #   Copyright (c) 2012 Dan Winship
 #   Copyright (c) 2015 Bastien ROUCARIES
 #
 #   This library is free software; you can redistribute it and/or modify it
 #   under the terms of the GNU Lesser General Public License as published by
 #   the Free Software Foundation; either version 2.1 of the License, or (at
 #   your option) any later version.
 #
 #   This library 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 Lesser
 #   General Public License for more details.
 #
 #   You should have received a copy of the GNU Lesser General Public License
 #   along with this program. If not, see <https://www.gnu.org/licenses/>.

 #serial 25

 AC_DEFUN([AX_CODE_COVERAGE],[
 	dnl Check for --enable-code-coverage
 	AC_REQUIRE([AC_PROG_SED])

 	# allow to override gcov location
 	AC_ARG_WITH([gcov],
 	  [AS_HELP_STRING([--with-gcov[=GCOV]], [use given GCOV for coverage (GCOV=gcov).])],
 	  [_AX_CODE_COVERAGE_GCOV_PROG_WITH=$with_gcov],
 	  [_AX_CODE_COVERAGE_GCOV_PROG_WITH=gcov])

 	AC_MSG_CHECKING([whether to build with code coverage support])
 	AC_ARG_ENABLE([code-coverage],
 	  AS_HELP_STRING([--enable-code-coverage],
 	  [Whether to enable code coverage support]),,
 	  enable_code_coverage=no)

 	AM_CONDITIONAL([CODE_COVERAGE_ENABLED], [test x$enable_code_coverage = xyes])
 	AC_SUBST([CODE_COVERAGE_ENABLED], [$enable_code_coverage])
 	AC_MSG_RESULT($enable_code_coverage)

 	AS_IF([ test "$enable_code_coverage" = "yes" ], [
 		# check for gcov
 		AC_CHECK_TOOL([GCOV],
 		  [$_AX_CODE_COVERAGE_GCOV_PROG_WITH],
 		  [:])
 		AS_IF([test "X$GCOV" = "X:"],
 		  [AC_MSG_ERROR([gcov is needed to do coverage])])
 		AC_SUBST([GCOV])

 		dnl Check if gcc is being used
 		AS_IF([ test "$GCC" = "no" ], [
 			AC_MSG_ERROR([not compiling with gcc, which is required for gcov code coverage])
 		])

 		AC_CHECK_PROG([LCOV], [lcov], [lcov])
 		AC_CHECK_PROG([GENHTML], [genhtml], [genhtml])

 		AS_IF([ test -z "$LCOV" ], [
 			AC_MSG_ERROR([To enable code coverage reporting you must have lcov installed])
 		])

 		AS_IF([ test -z "$GENHTML" ], [
 			AC_MSG_ERROR([Could not find genhtml from the lcov package])
 		])

 		dnl Build the code coverage flags
 		dnl Define CODE_COVERAGE_LDFLAGS for backwards compatibility
 		CODE_COVERAGE_CPPFLAGS="-DNDEBUG"
 		CODE_COVERAGE_CFLAGS="-O0 -g -fprofile-arcs -ftest-coverage"
 		CODE_COVERAGE_CXXFLAGS="-O0 -g -fprofile-arcs -ftest-coverage"
 		CODE_COVERAGE_LIBS="-lgcov"
 		CODE_COVERAGE_LDFLAGS="$CODE_COVERAGE_LIBS"

 		AC_SUBST([CODE_COVERAGE_CPPFLAGS])
 		AC_SUBST([CODE_COVERAGE_CFLAGS])
 		AC_SUBST([CODE_COVERAGE_CXXFLAGS])
 		AC_SUBST([CODE_COVERAGE_LIBS])
 		AC_SUBST([CODE_COVERAGE_LDFLAGS])

 		[CODE_COVERAGE_RULES_CHECK='
 	-$(A''M_V_at)$(MAKE) $(AM_MAKEFLAGS) -k check
 	$(A''M_V_at)$(MAKE) $(AM_MAKEFLAGS) code-coverage-capture
 ']
 		[CODE_COVERAGE_RULES_CAPTURE='
 	$(code_coverage_v_lcov_cap)$(LCOV) $(code_coverage_quiet) $(addprefix --directory ,$(CODE_COVERAGE_DIRECTORY)) --capture --output-file "$(CODE_COVERAGE_OUTPUT_FILE).tmp" --test-name "$(call code_coverage_sanitize,$(PACKAGE_NAME)-$(PACKAGE_VERSION))" --no-checksum --compat-libtool $(CODE_COVERAGE_LCOV_SHOPTS) $(CODE_COVERAGE_LCOV_OPTIONS)
 	$(code_coverage_v_lcov_ign)$(LCOV) $(code_coverage_quiet) $(addprefix --directory ,$(CODE_COVERAGE_DIRECTORY)) --remove "$(CODE_COVERAGE_OUTPUT_FILE).tmp" "/tmp/*" $(CODE_COVERAGE_IGNORE_PATTERN) --output-file "$(CODE_COVERAGE_OUTPUT_FILE)" $(CODE_COVERAGE_LCOV_SHOPTS) $(CODE_COVERAGE_LCOV_RMOPTS)
 	-@rm -f $(CODE_COVERAGE_OUTPUT_FILE).tmp
 	$(code_coverage_v_genhtml)LANG=C $(GENHTML) $(code_coverage_quiet) $(addprefix --prefix ,$(CODE_COVERAGE_DIRECTORY)) --output-directory "$(CODE_COVERAGE_OUTPUT_DIRECTORY)" --title "$(PACKAGE_NAME)-$(PACKAGE_VERSION) Code Coverage" --legend --show-details "$(CODE_COVERAGE_OUTPUT_FILE)" $(CODE_COVERAGE_GENHTML_OPTIONS)
 	@echo "file://$(abs_builddir)/$(CODE_COVERAGE_OUTPUT_DIRECTORY)/index.html"
 ']
 		[CODE_COVERAGE_RULES_CLEAN='
 clean: code-coverage-clean
 distclean: code-coverage-clean
 code-coverage-clean:
 	-$(LCOV) --directory $(top_builddir) -z
 	-rm -rf $(CODE_COVERAGE_OUTPUT_FILE) $(CODE_COVERAGE_OUTPUT_FILE).tmp $(CODE_COVERAGE_OUTPUT_DIRECTORY)
 	-find . \( -name "*.gcda" -o -name "*.gcno" -o -name "*.gcov" \) -delete
 ']
 	], [
 		[CODE_COVERAGE_RULES_CHECK='
 	@echo "Need to reconfigure with --enable-code-coverage"
 ']
 		CODE_COVERAGE_RULES_CAPTURE="$CODE_COVERAGE_RULES_CHECK"
 		CODE_COVERAGE_RULES_CLEAN=''
 	])

 [CODE_COVERAGE_RULES='
 # Code coverage
 #
 # Optional:
 #  - CODE_COVERAGE_DIRECTORY: Top-level directory for code coverage reporting.
 #    Multiple directories may be specified, separated by whitespace.
 #    (Default: $(top_builddir))
 #  - CODE_COVERAGE_OUTPUT_FILE: Filename and path for the .info file generated
 #    by lcov for code coverage. (Default:
 #    $(PACKAGE_NAME)-$(PACKAGE_VERSION)-coverage.info)
 #  - CODE_COVERAGE_OUTPUT_DIRECTORY: Directory for generated code coverage
 #    reports to be created. (Default:
 #    $(PACKAGE_NAME)-$(PACKAGE_VERSION)-coverage)
 #  - CODE_COVERAGE_BRANCH_COVERAGE: Set to 1 to enforce branch coverage,
 #    set to 0 to disable it and leave empty to stay with the default.
 #    (Default: empty)
 #  - CODE_COVERAGE_LCOV_SHOPTS_DEFAULT: Extra options shared between both lcov
 #    instances. (Default: based on $CODE_COVERAGE_BRANCH_COVERAGE)
 #  - CODE_COVERAGE_LCOV_SHOPTS: Extra options to shared between both lcov
 #    instances. (Default: $CODE_COVERAGE_LCOV_SHOPTS_DEFAULT)
 #  - CODE_COVERAGE_LCOV_OPTIONS_GCOVPATH: --gcov-tool pathtogcov
 #  - CODE_COVERAGE_LCOV_OPTIONS_DEFAULT: Extra options to pass to the
 #    collecting lcov instance. (Default: $CODE_COVERAGE_LCOV_OPTIONS_GCOVPATH)
 #  - CODE_COVERAGE_LCOV_OPTIONS: Extra options to pass to the collecting lcov
 #    instance. (Default: $CODE_COVERAGE_LCOV_OPTIONS_DEFAULT)
 #  - CODE_COVERAGE_LCOV_RMOPTS_DEFAULT: Extra options to pass to the filtering
 #    lcov instance. (Default: empty)
 #  - CODE_COVERAGE_LCOV_RMOPTS: Extra options to pass to the filtering lcov
 #    instance. (Default: $CODE_COVERAGE_LCOV_RMOPTS_DEFAULT)
 #  - CODE_COVERAGE_GENHTML_OPTIONS_DEFAULT: Extra options to pass to the
 #    genhtml instance. (Default: based on $CODE_COVERAGE_BRANCH_COVERAGE)
 #  - CODE_COVERAGE_GENHTML_OPTIONS: Extra options to pass to the genhtml
 #    instance. (Default: $CODE_COVERAGE_GENHTML_OPTIONS_DEFAULT)
 #  - CODE_COVERAGE_IGNORE_PATTERN: Extra glob pattern of files to ignore
 #
 # The generated report will be titled using the $(PACKAGE_NAME) and
 # $(PACKAGE_VERSION). In order to add the current git hash to the title,
 # use the git-version-gen script, available online.

 # Optional variables
 CODE_COVERAGE_DIRECTORY ?= $(top_builddir)
 CODE_COVERAGE_OUTPUT_FILE ?= $(PACKAGE_NAME)-$(PACKAGE_VERSION)-coverage.info
 CODE_COVERAGE_OUTPUT_DIRECTORY ?= $(PACKAGE_NAME)-$(PACKAGE_VERSION)-coverage
 CODE_COVERAGE_BRANCH_COVERAGE ?=
 CODE_COVERAGE_LCOV_SHOPTS_DEFAULT ?= $(if $(CODE_COVERAGE_BRANCH_COVERAGE),\
 --rc lcov_branch_coverage=$(CODE_COVERAGE_BRANCH_COVERAGE))
 CODE_COVERAGE_LCOV_SHOPTS ?= $(CODE_COVERAGE_LCOV_SHOPTS_DEFAULT)
 CODE_COVERAGE_LCOV_OPTIONS_GCOVPATH ?= --gcov-tool "$(GCOV)"
 CODE_COVERAGE_LCOV_OPTIONS_DEFAULT ?= $(CODE_COVERAGE_LCOV_OPTIONS_GCOVPATH)
 CODE_COVERAGE_LCOV_OPTIONS ?= $(CODE_COVERAGE_LCOV_OPTIONS_DEFAULT)
 CODE_COVERAGE_LCOV_RMOPTS_DEFAULT ?=
 CODE_COVERAGE_LCOV_RMOPTS ?= $(CODE_COVERAGE_LCOV_RMOPTS_DEFAULT)
 CODE_COVERAGE_GENHTML_OPTIONS_DEFAULT ?=\
 $(if $(CODE_COVERAGE_BRANCH_COVERAGE),\
 --rc genhtml_branch_coverage=$(CODE_COVERAGE_BRANCH_COVERAGE))
 CODE_COVERAGE_GENHTML_OPTIONS ?= $(CODE_COVERAGE_GENHTML_OPTIONS_DEFAULT)
 CODE_COVERAGE_IGNORE_PATTERN ?=

 GITIGNOREFILES ?=
 GITIGNOREFILES += $(CODE_COVERAGE_OUTPUT_FILE) $(CODE_COVERAGE_OUTPUT_DIRECTORY)

 code_coverage_v_lcov_cap = $(code_coverage_v_lcov_cap_$(V))
 code_coverage_v_lcov_cap_ = $(code_coverage_v_lcov_cap_$(AM_DEFAULT_VERBOSITY))
 code_coverage_v_lcov_cap_0 = @echo "  LCOV   --capture"\
  $(CODE_COVERAGE_OUTPUT_FILE);
 code_coverage_v_lcov_ign = $(code_coverage_v_lcov_ign_$(V))
 code_coverage_v_lcov_ign_ = $(code_coverage_v_lcov_ign_$(AM_DEFAULT_VERBOSITY))
 code_coverage_v_lcov_ign_0 = @echo "  LCOV   --remove /tmp/*"\
  $(CODE_COVERAGE_IGNORE_PATTERN);
 code_coverage_v_genhtml = $(code_coverage_v_genhtml_$(V))
 code_coverage_v_genhtml_ = $(code_coverage_v_genhtml_$(AM_DEFAULT_VERBOSITY))
 code_coverage_v_genhtml_0 = @echo "  GEN   " $(CODE_COVERAGE_OUTPUT_DIRECTORY);
 code_coverage_quiet = $(code_coverage_quiet_$(V))
 code_coverage_quiet_ = $(code_coverage_quiet_$(AM_DEFAULT_VERBOSITY))
 code_coverage_quiet_0 = --quiet

 # sanitizes the test-name: replaces with underscores: dashes and dots
 code_coverage_sanitize = $(subst -,_,$(subst .,_,$(1)))

 # Use recursive makes in order to ignore errors during check
 check-code-coverage:'"$CODE_COVERAGE_RULES_CHECK"'

 # Capture code coverage data
 code-coverage-capture: code-coverage-capture-hook'"$CODE_COVERAGE_RULES_CAPTURE"'

 # Hook rule executed before code-coverage-capture, overridable by the user
 code-coverage-capture-hook:

 '"$CODE_COVERAGE_RULES_CLEAN"'

 A''M_DISTCHECK_CONFIGURE_FLAGS ?=
 A''M_DISTCHECK_CONFIGURE_FLAGS += --disable-code-coverage

 .PHONY: check-code-coverage code-coverage-capture code-coverage-capture-hook code-coverage-clean
 ']

 	AC_SUBST([CODE_COVERAGE_RULES])
 	m4_ifdef([_AM_SUBST_NOTMAKE], [_AM_SUBST_NOTMAKE([CODE_COVERAGE_RULES])])
 ])
	# ===========================================================================
	# https://www.gnu.org/software/autoconf-archive/ax_code_coverage.html
	# ===========================================================================
	#
	# SYNOPSIS
	#
	# AX_CODE_COVERAGE()
	#
	# DESCRIPTION
	#
	# Defines CODE_COVERAGE_CPPFLAGS, CODE_COVERAGE_CFLAGS,
	# CODE_COVERAGE_CXXFLAGS and CODE_COVERAGE_LIBS which should be included
	# in the CPPFLAGS, CFLAGS CXXFLAGS and LIBS/LIBADD variables of every
	# build target (program or library) which should be built with code
	# coverage support. Also defines CODE_COVERAGE_RULES which should be
	# substituted in your Makefile; and $enable_code_coverage which can be
	# used in subsequent configure output. CODE_COVERAGE_ENABLED is defined
	# and substituted, and corresponds to the value of the
	# --enable-code-coverage option, which defaults to being disabled.
	#
	# Test also for gcov program and create GCOV variable that could be
	# substituted.
	#
	# Note that all optimization flags in CFLAGS must be disabled when code
	# coverage is enabled.
	#
	# Usage example:
	#
	# configure.ac:
	#
	# AX_CODE_COVERAGE
	#
	# Makefile.am:
	#
	# @CODE_COVERAGE_RULES@
	# my_program_LIBS = ... $(CODE_COVERAGE_LIBS) ...
	# my_program_CPPFLAGS = ... $(CODE_COVERAGE_CPPFLAGS) ...
	# my_program_CFLAGS = ... $(CODE_COVERAGE_CFLAGS) ...
	# my_program_CXXFLAGS = ... $(CODE_COVERAGE_CXXFLAGS) ...
	#
	# This results in a "check-code-coverage" rule being added to any
	# Makefile.am which includes "@CODE_COVERAGE_RULES@" (assuming the module
	# has been configured with --enable-code-coverage). Running `make
	# check-code-coverage` in that directory will run the module's test suite
	# (`make check`) and build a code coverage report detailing the code which
	# was touched, then print the URI for the report.
	#
	# In earlier versions of this macro, CODE_COVERAGE_LDFLAGS was defined
	# instead of CODE_COVERAGE_LIBS. They are both still defined, but use of
	# CODE_COVERAGE_LIBS is preferred for clarity; CODE_COVERAGE_LDFLAGS is
	# deprecated. They have the same value.
	#
	# This code was derived from Makefile.decl in GLib, originally licenced
	# under LGPLv2.1+.
	#
	# LICENSE
	#
	# Copyright (c) 2012, 2016 Philip Withnall
	# Copyright (c) 2012 Xan Lopez
	# Copyright (c) 2012 Christian Persch
	# Copyright (c) 2012 Paolo Borelli
	# Copyright (c) 2012 Dan Winship
	# Copyright (c) 2015 Bastien ROUCARIES
	#
	# This library is free software; you can redistribute it and/or modify it
	# under the terms of the GNU Lesser General Public License as published by
	# the Free Software Foundation; either version 2.1 of the License, or (at
	# your option) any later version.
	#
	# This library 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 Lesser
	# General Public License for more details.
	#
	# You should have received a copy of the GNU Lesser General Public License
	# along with this program. If not, see <https://www.gnu.org/licenses/>.

	#serial 25

	AC_DEFUN([AX_CODE_COVERAGE],[
	dnl Check for --enable-code-coverage
	AC_REQUIRE([AC_PROG_SED])

	# allow to override gcov location
	AC_ARG_WITH([gcov],
	[AS_HELP_STRING([--with-gcov[=GCOV]], [use given GCOV for coverage (GCOV=gcov).])],
	[_AX_CODE_COVERAGE_GCOV_PROG_WITH=$with_gcov],
	[_AX_CODE_COVERAGE_GCOV_PROG_WITH=gcov])

	AC_MSG_CHECKING([whether to build with code coverage support])
	AC_ARG_ENABLE([code-coverage],
	AS_HELP_STRING([--enable-code-coverage],
	[Whether to enable code coverage support]),,
	enable_code_coverage=no)

	AM_CONDITIONAL([CODE_COVERAGE_ENABLED], [test x$enable_code_coverage = xyes])
	AC_SUBST([CODE_COVERAGE_ENABLED], [$enable_code_coverage])
	AC_MSG_RESULT($enable_code_coverage)

	AS_IF([ test "$enable_code_coverage" = "yes" ], [
	# check for gcov
	AC_CHECK_TOOL([GCOV],
	[$_AX_CODE_COVERAGE_GCOV_PROG_WITH],
	[:])
	AS_IF([test "X$GCOV" = "X:"],
	[AC_MSG_ERROR([gcov is needed to do coverage])])
	AC_SUBST([GCOV])

	dnl Check if gcc is being used
	AS_IF([ test "$GCC" = "no" ], [
	AC_MSG_ERROR([not compiling with gcc, which is required for gcov code coverage])
	])

	AC_CHECK_PROG([LCOV], [lcov], [lcov])
	AC_CHECK_PROG([GENHTML], [genhtml], [genhtml])

	AS_IF([ test -z "$LCOV" ], [
	AC_MSG_ERROR([To enable code coverage reporting you must have lcov installed])
	])

	AS_IF([ test -z "$GENHTML" ], [
	AC_MSG_ERROR([Could not find genhtml from the lcov package])
	])

	dnl Build the code coverage flags
	dnl Define CODE_COVERAGE_LDFLAGS for backwards compatibility
	CODE_COVERAGE_CPPFLAGS="-DNDEBUG"
	CODE_COVERAGE_CFLAGS="-O0 -g -fprofile-arcs -ftest-coverage"
	CODE_COVERAGE_CXXFLAGS="-O0 -g -fprofile-arcs -ftest-coverage"
	CODE_COVERAGE_LIBS="-lgcov"
	CODE_COVERAGE_LDFLAGS="$CODE_COVERAGE_LIBS"

	AC_SUBST([CODE_COVERAGE_CPPFLAGS])
	AC_SUBST([CODE_COVERAGE_CFLAGS])
	AC_SUBST([CODE_COVERAGE_CXXFLAGS])
	AC_SUBST([CODE_COVERAGE_LIBS])
	AC_SUBST([CODE_COVERAGE_LDFLAGS])

	[CODE_COVERAGE_RULES_CHECK='
	-$(A''M_V_at)$(MAKE) $(AM_MAKEFLAGS) -k check
	$(A''M_V_at)$(MAKE) $(AM_MAKEFLAGS) code-coverage-capture
	']
	[CODE_COVERAGE_RULES_CAPTURE='
	$(code_coverage_v_lcov_cap)$(LCOV) $(code_coverage_quiet) $(addprefix --directory ,$(CODE_COVERAGE_DIRECTORY)) --capture --output-file "$(CODE_COVERAGE_OUTPUT_FILE).tmp" --test-name "$(call code_coverage_sanitize,$(PACKAGE_NAME)-$(PACKAGE_VERSION))" --no-checksum --compat-libtool $(CODE_COVERAGE_LCOV_SHOPTS) $(CODE_COVERAGE_LCOV_OPTIONS)
	$(code_coverage_v_lcov_ign)$(LCOV) $(code_coverage_quiet) $(addprefix --directory ,$(CODE_COVERAGE_DIRECTORY)) --remove "$(CODE_COVERAGE_OUTPUT_FILE).tmp" "/tmp/*" $(CODE_COVERAGE_IGNORE_PATTERN) --output-file "$(CODE_COVERAGE_OUTPUT_FILE)" $(CODE_COVERAGE_LCOV_SHOPTS) $(CODE_COVERAGE_LCOV_RMOPTS)
	-@rm -f $(CODE_COVERAGE_OUTPUT_FILE).tmp
	$(code_coverage_v_genhtml)LANG=C $(GENHTML) $(code_coverage_quiet) $(addprefix --prefix ,$(CODE_COVERAGE_DIRECTORY)) --output-directory "$(CODE_COVERAGE_OUTPUT_DIRECTORY)" --title "$(PACKAGE_NAME)-$(PACKAGE_VERSION) Code Coverage" --legend --show-details "$(CODE_COVERAGE_OUTPUT_FILE)" $(CODE_COVERAGE_GENHTML_OPTIONS)
	@echo "file://$(abs_builddir)/$(CODE_COVERAGE_OUTPUT_DIRECTORY)/index.html"
	']
	[CODE_COVERAGE_RULES_CLEAN='
	clean: code-coverage-clean
	distclean: code-coverage-clean
	code-coverage-clean:
	-$(LCOV) --directory $(top_builddir) -z
	-rm -rf $(CODE_COVERAGE_OUTPUT_FILE) $(CODE_COVERAGE_OUTPUT_FILE).tmp $(CODE_COVERAGE_OUTPUT_DIRECTORY)
	-find . \( -name ".gcda" -o -name ".gcno" -o -name "*.gcov" \) -delete
	']
	], [
	[CODE_COVERAGE_RULES_CHECK='
	@echo "Need to reconfigure with --enable-code-coverage"
	']
	CODE_COVERAGE_RULES_CAPTURE="$CODE_COVERAGE_RULES_CHECK"
	CODE_COVERAGE_RULES_CLEAN=''
	])

	[CODE_COVERAGE_RULES='
	# Code coverage
	#
	# Optional:
	# - CODE_COVERAGE_DIRECTORY: Top-level directory for code coverage reporting.
	# Multiple directories may be specified, separated by whitespace.
	# (Default: $(top_builddir))
	# - CODE_COVERAGE_OUTPUT_FILE: Filename and path for the .info file generated
	# by lcov for code coverage. (Default:
	# $(PACKAGE_NAME)-$(PACKAGE_VERSION)-coverage.info)
	# - CODE_COVERAGE_OUTPUT_DIRECTORY: Directory for generated code coverage
	# reports to be created. (Default:
	# $(PACKAGE_NAME)-$(PACKAGE_VERSION)-coverage)
	# - CODE_COVERAGE_BRANCH_COVERAGE: Set to 1 to enforce branch coverage,
	# set to 0 to disable it and leave empty to stay with the default.
	# (Default: empty)
	# - CODE_COVERAGE_LCOV_SHOPTS_DEFAULT: Extra options shared between both lcov
	# instances. (Default: based on $CODE_COVERAGE_BRANCH_COVERAGE)
	# - CODE_COVERAGE_LCOV_SHOPTS: Extra options to shared between both lcov
	# instances. (Default: $CODE_COVERAGE_LCOV_SHOPTS_DEFAULT)
	# - CODE_COVERAGE_LCOV_OPTIONS_GCOVPATH: --gcov-tool pathtogcov
	# - CODE_COVERAGE_LCOV_OPTIONS_DEFAULT: Extra options to pass to the
	# collecting lcov instance. (Default: $CODE_COVERAGE_LCOV_OPTIONS_GCOVPATH)
	# - CODE_COVERAGE_LCOV_OPTIONS: Extra options to pass to the collecting lcov
	# instance. (Default: $CODE_COVERAGE_LCOV_OPTIONS_DEFAULT)
	# - CODE_COVERAGE_LCOV_RMOPTS_DEFAULT: Extra options to pass to the filtering
	# lcov instance. (Default: empty)
	# - CODE_COVERAGE_LCOV_RMOPTS: Extra options to pass to the filtering lcov
	# instance. (Default: $CODE_COVERAGE_LCOV_RMOPTS_DEFAULT)
	# - CODE_COVERAGE_GENHTML_OPTIONS_DEFAULT: Extra options to pass to the
	# genhtml instance. (Default: based on $CODE_COVERAGE_BRANCH_COVERAGE)
	# - CODE_COVERAGE_GENHTML_OPTIONS: Extra options to pass to the genhtml
	# instance. (Default: $CODE_COVERAGE_GENHTML_OPTIONS_DEFAULT)
	# - CODE_COVERAGE_IGNORE_PATTERN: Extra glob pattern of files to ignore
	#
	# The generated report will be titled using the $(PACKAGE_NAME) and
	# $(PACKAGE_VERSION). In order to add the current git hash to the title,
	# use the git-version-gen script, available online.

	# Optional variables
	CODE_COVERAGE_DIRECTORY ?= $(top_builddir)
	CODE_COVERAGE_OUTPUT_FILE ?= $(PACKAGE_NAME)-$(PACKAGE_VERSION)-coverage.info
	CODE_COVERAGE_OUTPUT_DIRECTORY ?= $(PACKAGE_NAME)-$(PACKAGE_VERSION)-coverage
	CODE_COVERAGE_BRANCH_COVERAGE ?=
	CODE_COVERAGE_LCOV_SHOPTS_DEFAULT ?= $(if $(CODE_COVERAGE_BRANCH_COVERAGE),\
	--rc lcov_branch_coverage=$(CODE_COVERAGE_BRANCH_COVERAGE))
	CODE_COVERAGE_LCOV_SHOPTS ?= $(CODE_COVERAGE_LCOV_SHOPTS_DEFAULT)
	CODE_COVERAGE_LCOV_OPTIONS_GCOVPATH ?= --gcov-tool "$(GCOV)"
	CODE_COVERAGE_LCOV_OPTIONS_DEFAULT ?= $(CODE_COVERAGE_LCOV_OPTIONS_GCOVPATH)
	CODE_COVERAGE_LCOV_OPTIONS ?= $(CODE_COVERAGE_LCOV_OPTIONS_DEFAULT)
	CODE_COVERAGE_LCOV_RMOPTS_DEFAULT ?=
	CODE_COVERAGE_LCOV_RMOPTS ?= $(CODE_COVERAGE_LCOV_RMOPTS_DEFAULT)
	CODE_COVERAGE_GENHTML_OPTIONS_DEFAULT ?=\
	$(if $(CODE_COVERAGE_BRANCH_COVERAGE),\
	--rc genhtml_branch_coverage=$(CODE_COVERAGE_BRANCH_COVERAGE))
	CODE_COVERAGE_GENHTML_OPTIONS ?= $(CODE_COVERAGE_GENHTML_OPTIONS_DEFAULT)
	CODE_COVERAGE_IGNORE_PATTERN ?=

	GITIGNOREFILES ?=
	GITIGNOREFILES += $(CODE_COVERAGE_OUTPUT_FILE) $(CODE_COVERAGE_OUTPUT_DIRECTORY)

	code_coverage_v_lcov_cap = $(code_coverage_v_lcov_cap_$(V))
	code_coverage_v_lcov_cap_ = $(code_coverage_v_lcov_cap_$(AM_DEFAULT_VERBOSITY))
	code_coverage_v_lcov_cap_0 = @echo " LCOV --capture"\
	$(CODE_COVERAGE_OUTPUT_FILE);
	code_coverage_v_lcov_ign = $(code_coverage_v_lcov_ign_$(V))
	code_coverage_v_lcov_ign_ = $(code_coverage_v_lcov_ign_$(AM_DEFAULT_VERBOSITY))
	code_coverage_v_lcov_ign_0 = @echo " LCOV --remove /tmp/*"\
	$(CODE_COVERAGE_IGNORE_PATTERN);
	code_coverage_v_genhtml = $(code_coverage_v_genhtml_$(V))
	code_coverage_v_genhtml_ = $(code_coverage_v_genhtml_$(AM_DEFAULT_VERBOSITY))
	code_coverage_v_genhtml_0 = @echo " GEN " $(CODE_COVERAGE_OUTPUT_DIRECTORY);
	code_coverage_quiet = $(code_coverage_quiet_$(V))
	code_coverage_quiet_ = $(code_coverage_quiet_$(AM_DEFAULT_VERBOSITY))
	code_coverage_quiet_0 = --quiet

	# sanitizes the test-name: replaces with underscores: dashes and dots
	code_coverage_sanitize = $(subst -,_,$(subst .,_,$(1)))

	# Use recursive makes in order to ignore errors during check
	check-code-coverage:'"$CODE_COVERAGE_RULES_CHECK"'

	# Capture code coverage data
	code-coverage-capture: code-coverage-capture-hook'"$CODE_COVERAGE_RULES_CAPTURE"'

	# Hook rule executed before code-coverage-capture, overridable by the user
	code-coverage-capture-hook:

	'"$CODE_COVERAGE_RULES_CLEAN"'

	A''M_DISTCHECK_CONFIGURE_FLAGS ?=
	A''M_DISTCHECK_CONFIGURE_FLAGS += --disable-code-coverage

	.PHONY: check-code-coverage code-coverage-capture code-coverage-capture-hook code-coverage-clean
	']

	AC_SUBST([CODE_COVERAGE_RULES])
	m4_ifdef([_AM_SUBST_NOTMAKE], [_AM_SUBST_NOTMAKE([CODE_COVERAGE_RULES])])
	])