aclocal.m4

# generated automatically by aclocal 1.16.5 -*- Autoconf -*-

# Copyright (C) 1996-2021 Free Software Foundation, Inc.

# This file is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.

# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
# PARTICULAR PURPOSE.

m4_ifndef([AC_CONFIG_MACRO_DIRS], [m4_defun([_AM_CONFIG_MACRO_DIRS], [])m4_defun([AC_CONFIG_MACRO_DIRS], [_AM_CONFIG_MACRO_DIRS($@)])])
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# ===========================================================================
#   https://www.gnu.org/software/autoconf-archive/ax_ac_append_to_file.html
# ===========================================================================
#
# SYNOPSIS
#
#   AX_AC_APPEND_TO_FILE([FILE],[DATA])
#
# DESCRIPTION
#
#   Appends the specified data to the specified Autoconf is run. If you want
#   to append to a file when configure is run use AX_APPEND_TO_FILE instead.
#
# LICENSE
#
#   Copyright (c) 2009 Allan Caffee <allan.caffee@gmail.com>
#
#   Copying and distribution of this file, with or without modification, are
#   permitted in any medium without royalty provided the copyright notice
#   and this notice are preserved. This file is offered as-is, without any
#   warranty.

#serial 10

AC_DEFUN([AX_AC_APPEND_TO_FILE],[
AC_REQUIRE([AX_FILE_ESCAPES])
m4_esyscmd(
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[
printf "%s" "$2" >> "$1"
])
])

# ===========================================================================
#   https://www.gnu.org/software/autoconf-archive/ax_ac_print_to_file.html
# ===========================================================================
#
# SYNOPSIS
#
#   AX_AC_PRINT_TO_FILE([FILE],[DATA])
#
# DESCRIPTION
#
#   Writes the specified data to the specified file when Autoconf is run. If
#   you want to print to a file when configure is run use AX_PRINT_TO_FILE
#   instead.
#
# LICENSE
#
#   Copyright (c) 2009 Allan Caffee <allan.caffee@gmail.com>
#
#   Copying and distribution of this file, with or without modification, are
#   permitted in any medium without royalty provided the copyright notice
#   and this notice are preserved. This file is offered as-is, without any
#   warranty.

#serial 10

AC_DEFUN([AX_AC_PRINT_TO_FILE],[
m4_esyscmd(
AC_REQUIRE([AX_FILE_ESCAPES])
[
printf "%s" "$2" > "$1"
])
])

# ===========================================================================
#  https://www.gnu.org/software/autoconf-archive/ax_add_am_macro_static.html
# ===========================================================================
#
# SYNOPSIS
#
#   AX_ADD_AM_MACRO_STATIC([RULE])
#
# DESCRIPTION
#
#   Adds the specified rule to $AMINCLUDE.
#
# LICENSE
#
#   Copyright (c) 2009 Tom Howard <tomhoward@users.sf.net>
#   Copyright (c) 2009 Allan Caffee <allan.caffee@gmail.com>
#
#   Copying and distribution of this file, with or without modification, are
#   permitted in any medium without royalty provided the copyright notice
#   and this notice are preserved. This file is offered as-is, without any
#   warranty.

#serial 8

AC_DEFUN([AX_ADD_AM_MACRO_STATIC],[
  AC_REQUIRE([AX_AM_MACROS_STATIC])
  AX_AC_APPEND_TO_FILE(AMINCLUDE_STATIC,[$1])
])

# ===========================================================================
#   https://www.gnu.org/software/autoconf-archive/ax_am_macros_static.html
# ===========================================================================
#
# SYNOPSIS
#
#   AX_AM_MACROS_STATIC
#
# DESCRIPTION
#
#   Adds support for macros that create Automake rules. You must manually
#   add the following line
#
#     include $(top_srcdir)/aminclude_static.am
#
#   to your Makefile.am files.
#
# LICENSE
#
#   Copyright (c) 2009 Tom Howard <tomhoward@users.sf.net>
#   Copyright (c) 2009 Allan Caffee <allan.caffee@gmail.com>
#
#   Copying and distribution of this file, with or without modification, are
#   permitted in any medium without royalty provided the copyright notice
#   and this notice are preserved. This file is offered as-is, without any
#   warranty.

#serial 11

AC_DEFUN([AMINCLUDE_STATIC],[aminclude_static.am])

AC_DEFUN([AX_AM_MACROS_STATIC],
[
AX_AC_PRINT_TO_FILE(AMINCLUDE_STATIC,[
# ]AMINCLUDE_STATIC[ generated automatically by Autoconf
# from AX_AM_MACROS_STATIC on ]m4_esyscmd([LC_ALL=C date])[
])
])

# ===========================================================================
#    https://www.gnu.org/software/autoconf-archive/ax_check_gnu_make.html
# ===========================================================================
#
# SYNOPSIS
#
#   AX_CHECK_GNU_MAKE([run-if-true],[run-if-false])
#
# DESCRIPTION
#
#   This macro searches for a GNU version of make. If a match is found:
#
#     * The makefile variable `ifGNUmake' is set to the empty string, otherwise
#       it is set to "#". This is useful for including a special features in a
#       Makefile, which cannot be handled by other versions of make.
#     * The makefile variable `ifnGNUmake' is set to #, otherwise
#       it is set to the empty string. This is useful for including a special
#       features in a Makefile, which can be handled
#       by other versions of make or to specify else like clause.
#     * The variable `_cv_gnu_make_command` is set to the command to invoke
#       GNU make if it exists, the empty string otherwise.
#     * The variable `ax_cv_gnu_make_command` is set to the command to invoke
#       GNU make by copying `_cv_gnu_make_command`, otherwise it is unset.
#     * If GNU Make is found, its version is extracted from the output of
#       `make --version` as the last field of a record of space-separated
#       columns and saved into the variable `ax_check_gnu_make_version`.
#     * Additionally if GNU Make is found, run shell code run-if-true
#       else run shell code run-if-false.
#
#   Here is an example of its use:
#
#   Makefile.in might contain:
#
#     # A failsafe way of putting a dependency rule into a makefile
#     $(DEPEND):
#             $(CC) -MM $(srcdir)/*.c > $(DEPEND)
#
#     @ifGNUmake@ ifeq ($(DEPEND),$(wildcard $(DEPEND)))
#     @ifGNUmake@ include $(DEPEND)
#     @ifGNUmake@ else
#     fallback code
#     @ifGNUmake@ endif
#
#   Then configure.in would normally contain:
#
#     AX_CHECK_GNU_MAKE()
#     AC_OUTPUT(Makefile)
#
#   Then perhaps to cause gnu make to override any other make, we could do
#   something like this (note that GNU make always looks for GNUmakefile
#   first):
#
#     if  ! test x$_cv_gnu_make_command = x ; then
#             mv Makefile GNUmakefile
#             echo .DEFAULT: > Makefile ;
#             echo \  $_cv_gnu_make_command \$@ >> Makefile;
#     fi
#
#   Then, if any (well almost any) other make is called, and GNU make also
#   exists, then the other make wraps the GNU make.
#
# LICENSE
#
#   Copyright (c) 2008 John Darrington <j.darrington@elvis.murdoch.edu.au>
#   Copyright (c) 2015 Enrico M. Crisostomo <enrico.m.crisostomo@gmail.com>
#
#   Copying and distribution of this file, with or without modification, are
#   permitted in any medium without royalty provided the copyright notice
#   and this notice are preserved. This file is offered as-is, without any
#   warranty.

#serial 12

AC_DEFUN([AX_CHECK_GNU_MAKE],dnl
  [AC_PROG_AWK
  AC_CACHE_CHECK([for GNU make],[_cv_gnu_make_command],[dnl
    _cv_gnu_make_command="" ;
dnl Search all the common names for GNU make
    for a in "$MAKE" make gmake gnumake ; do
      if test -z "$a" ; then continue ; fi ;
      if "$a" --version 2> /dev/null | grep GNU 2>&1 > /dev/null ; then
        _cv_gnu_make_command=$a ;
        AX_CHECK_GNU_MAKE_HEADLINE=$("$a" --version 2> /dev/null | grep "GNU Make")
        ax_check_gnu_make_version=$(echo ${AX_CHECK_GNU_MAKE_HEADLINE} | ${AWK} -F " " '{ print $(NF); }')
        break ;
      fi
    done ;])
dnl If there was a GNU version, then set @ifGNUmake@ to the empty string, '#' otherwise
  AS_VAR_IF([_cv_gnu_make_command], [""], [AS_VAR_SET([ifGNUmake], ["#"])],   [AS_VAR_SET([ifGNUmake], [""])])
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  AC_SUBST([ifGNUmake])
  AC_SUBST([ifnGNUmake])
])

# ===========================================================================
#     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 add rules using AX_ADD_AM_MACRO_STATIC; 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:
#
#     include $(top_srcdir)/aminclude_static.am
#
#     my_program_LIBS = ... $(CODE_COVERAGE_LIBS) ...
#     my_program_CPPFLAGS = ... $(CODE_COVERAGE_CPPFLAGS) ...
#     my_program_CFLAGS = ... $(CODE_COVERAGE_CFLAGS) ...
#     my_program_CXXFLAGS = ... $(CODE_COVERAGE_CXXFLAGS) ...
#
#     clean-local: code-coverage-clean
#     distclean-local: code-coverage-dist-clean
#
#   This results in a "check-code-coverage" rule being added to any
#   Makefile.am which do "include $(top_srcdir)/aminclude_static.am"
#   (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.
#
#   This code was derived from Makefile.decl in GLib, originally licensed
#   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) 2015,2018 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 34

m4_define(_AX_CODE_COVERAGE_RULES,[
AX_ADD_AM_MACRO_STATIC([
# 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
# run only on top dir
if CODE_COVERAGE_ENABLED
 ifeq (\$(abs_builddir), \$(abs_top_builddir))
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:
	-\$(AM_V_at)\$(MAKE) \$(AM_MAKEFLAGS) -k check
	\$(AM_V_at)\$(MAKE) \$(AM_MAKEFLAGS) code-coverage-capture

# Capture code coverage data
code-coverage-capture: code-coverage-capture-hook
	\$(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-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-dist-clean:

A][M_DISTCHECK_CONFIGURE_FLAGS := \$(A][M_DISTCHECK_CONFIGURE_FLAGS) --disable-code-coverage
 else # ifneq (\$(abs_builddir), \$(abs_top_builddir))
check-code-coverage:

code-coverage-capture: code-coverage-capture-hook

code-coverage-clean:

code-coverage-dist-clean:
 endif # ifeq (\$(abs_builddir), \$(abs_top_builddir))
else #! CODE_COVERAGE_ENABLED
# Use recursive makes in order to ignore errors during check
check-code-coverage:
	@echo \"Need to reconfigure with --enable-code-coverage\"
# Capture code coverage data
code-coverage-capture: code-coverage-capture-hook
	@echo \"Need to reconfigure with --enable-code-coverage\"

code-coverage-clean:

code-coverage-dist-clean:

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

.PHONY: check-code-coverage code-coverage-capture code-coverage-dist-clean code-coverage-clean code-coverage-capture-hook
])
])

AC_DEFUN([_AX_CODE_COVERAGE_ENABLED],[
	AX_CHECK_GNU_MAKE([],[AC_MSG_ERROR([not using GNU make that is needed for coverage])])
	AC_REQUIRE([AX_ADD_AM_MACRO_STATIC])
	# 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 x"$LCOV" = x ], [
		AC_MSG_ERROR([To enable code coverage reporting you must have lcov installed])
	      ])

	AS_IF([ test x"$GENHTML" = x ], [
		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"

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

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

	# 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 "x$enable_code_coverage" = xyes ], [
		_AX_CODE_COVERAGE_ENABLED
	      ])

	_AX_CODE_COVERAGE_RULES
])

# ===========================================================================
#     https://www.gnu.org/software/autoconf-archive/ax_file_escapes.html
# ===========================================================================
#
# SYNOPSIS
#
#   AX_FILE_ESCAPES
#
# DESCRIPTION
#
#   Writes the specified data to the specified file.
#
# LICENSE
#
#   Copyright (c) 2008 Tom Howard <tomhoward@users.sf.net>
#
#   Copying and distribution of this file, with or without modification, are
#   permitted in any medium without royalty provided the copyright notice
#   and this notice are preserved. This file is offered as-is, without any
#   warranty.

#serial 8

AC_DEFUN([AX_FILE_ESCAPES],[
AX_DOLLAR="\$"
AX_SRB="\\135"
AX_SLB="\\133"
AX_BS="\\\\"
AX_DQ="\""
])

# Copyright (C) 2002-2021 Free Software Foundation, Inc.
#
# This file is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.

# AM_AUTOMAKE_VERSION(VERSION)
# ----------------------------
# Automake X.Y traces this macro to ensure aclocal.m4 has been
# generated from the m4 files accompanying Automake X.Y.
# (This private macro should not be called outside this file.)
AC_DEFUN([AM_AUTOMAKE_VERSION],
[am__api_version='1.16'
dnl Some users find AM_AUTOMAKE_VERSION and mistake it for a way to
dnl require some minimum version.  Point them to the right macro.
m4_if([$1], [1.16.5], [],
      [AC_FATAL([Do not call $0, use AM_INIT_AUTOMAKE([$1]).])])dnl
])

# _AM_AUTOCONF_VERSION(VERSION)
# -----------------------------
# aclocal traces this macro to find the Autoconf version.
# This is a private macro too.  Using m4_define simplifies
# the logic in aclocal, which can simply ignore this definition.
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# AM_AUX_DIR_EXPAND                                         -*- Autoconf -*-

# Copyright (C) 2001-2021 Free Software Foundation, Inc.
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# For projects using AC_CONFIG_AUX_DIR([foo]), Autoconf sets
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# AM_CONDITIONAL                                            -*- Autoconf -*-

# Copyright (C) 1997-2021 Free Software Foundation, Inc.
#
# This file is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.

# AM_CONDITIONAL(NAME, SHELL-CONDITION)
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# Copyright (C) 1999-2021 Free Software Foundation, Inc.
#
# This file is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.


# There are a few dirty hacks below to avoid letting 'AC_PROG_CC' be
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AC_SUBST([$1DEPMODE], [depmode=$am_cv_$1_dependencies_compiler_type])
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# AM_SET_DEPDIR
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# Choose a directory name for dependency files.
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AC_DEFUN([AM_SET_DEPDIR],
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AC_SUBST([DEPDIR], ["${am__leading_dot}deps"])dnl
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# AM_DEP_TRACK
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# Generate code to set up dependency tracking.              -*- Autoconf -*-

# Copyright (C) 1999-2021 Free Software Foundation, Inc.
#
# This file is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.

# _AM_OUTPUT_DEPENDENCY_COMMANDS
# ------------------------------
AC_DEFUN([_AM_OUTPUT_DEPENDENCY_COMMANDS],
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# AM_OUTPUT_DEPENDENCY_COMMANDS
# -----------------------------
# This macro should only be invoked once -- use via AC_REQUIRE.
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# Do all the work for Automake.                             -*- Autoconf -*-

# Copyright (C) 1996-2021 Free Software Foundation, Inc.
#
# This file is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
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# This macro actually does too much.  Some checks are only needed if
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dnl Redefine AC_PROG_CC to automatically invoke _AM_PROG_CC_C_O.
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# AM_INIT_AUTOMAKE(PACKAGE, VERSION, [NO-DEFINE])
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AC_DEFUN([AM_INIT_AUTOMAKE],
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AC_REQUIRE([AC_ARG_PROGRAM])dnl
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AM_MISSING_PROG([AUTOHEADER], [autoheader])
AM_MISSING_PROG([MAKEINFO], [makeinfo])
AC_REQUIRE([AM_PROG_INSTALL_SH])dnl
AC_REQUIRE([AM_PROG_INSTALL_STRIP])dnl
AC_REQUIRE([AC_PROG_MKDIR_P])dnl
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AC_SUBST([mkdir_p], ['$(MKDIR_P)'])
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AC_REQUIRE([AM_SET_LEADING_DOT])dnl
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AC_PROVIDE_IFELSE([AC_PROG_OBJC],
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AC_REQUIRE([AM_SILENT_RULES])dnl
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Aborting the configuration process, to ensure you take notice of the issue.

You can download and install GNU coreutils to get an 'rm' implementation
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If you want to complete the configuration process using your problematic
'rm' anyway, export the environment variable ACCEPT_INFERIOR_RM_PROGRAM
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END
    AC_MSG_ERROR([Your 'rm' program is bad, sorry.])
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# Copyright (C) 2001-2021 Free Software Foundation, Inc.
#
# This file is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
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# AM_PROG_INSTALL_SH
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AC_SUBST([install_sh])])

# Copyright (C) 2003-2021 Free Software Foundation, Inc.
#
# This file is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
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AC_SUBST([am__leading_dot])])

# Check to see how 'make' treats includes.	            -*- Autoconf -*-

# Copyright (C) 2001-2021 Free Software Foundation, Inc.
#
# This file is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.

# AM_MAKE_INCLUDE()
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AC_SUBST([am__include])])
AC_SUBST([am__quote])])

# Fake the existence of programs that GNU maintainers use.  -*- Autoconf -*-

# Copyright (C) 1997-2021 Free Software Foundation, Inc.
#
# This file is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.

# AM_MISSING_PROG(NAME, PROGRAM)
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$1=${$1-"${am_missing_run}$2"}
AC_SUBST($1)])

# AM_MISSING_HAS_RUN
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# Helper functions for option handling.                     -*- Autoconf -*-

# Copyright (C) 2001-2021 Free Software Foundation, Inc.
#
# This file is free software; the Free Software Foundation
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# _AM_MANGLE_OPTION(NAME)
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AC_DEFUN([_AM_MANGLE_OPTION],
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# Copyright (C) 1999-2021 Free Software Foundation, Inc.
#
# This file is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.

# _AM_PROG_CC_C_O
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# Like AC_PROG_CC_C_O, but changed for automake.  We rewrite AC_PROG_CC
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AC_REQUIRE_AUX_FILE([compile])dnl
AC_LANG_PUSH([C])dnl
AC_CACHE_CHECK(
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fi
AC_LANG_POP([C])])

# For backward compatibility.
AC_DEFUN_ONCE([AM_PROG_CC_C_O], [AC_REQUIRE([AC_PROG_CC])])

# Copyright (C) 2001-2021 Free Software Foundation, Inc.
#
# This file is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.

# AM_RUN_LOG(COMMAND)
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# Run COMMAND, save the exit status in ac_status, and log it.
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AC_DEFUN([AM_RUN_LOG],
[{ echo "$as_me:$LINENO: $1" >&AS_MESSAGE_LOG_FD
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   (exit $ac_status); }])

# Check to make sure that the build environment is sane.    -*- Autoconf -*-

# Copyright (C) 1996-2021 Free Software Foundation, Inc.
#
# This file is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.

# AM_SANITY_CHECK
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AC_DEFUN([AM_SANITY_CHECK],
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# Reject unsafe characters in $srcdir or the absolute working directory
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am_lf='
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# Do 'set' in a subshell so we don't clobber the current shell's
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# directory).
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AC_MSG_RESULT([yes])
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rm -f conftest.file
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# Copyright (C) 2009-2021 Free Software Foundation, Inc.
#
# This file is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.

# AM_SILENT_RULES([DEFAULT])
# --------------------------
# Enable less verbose build rules; with the default set to DEFAULT
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AC_DEFUN([AM_SILENT_RULES],
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AS_HELP_STRING(
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case $enable_silent_rules in @%:@ (((
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dnl
dnl A few 'make' implementations (e.g., NonStop OS and NextStep)
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dnl See automake bug#9928 and bug#10237.
am_make=${MAKE-make}
AC_CACHE_CHECK([whether $am_make supports nested variables],
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BAR1=true
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am__doit:
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else
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  AM_V=$AM_DEFAULT_VERBOSITY
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AC_SUBST([AM_V])dnl
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AC_SUBST([AM_DEFAULT_V])dnl
AM_SUBST_NOTMAKE([AM_DEFAULT_V])dnl
AC_SUBST([AM_DEFAULT_VERBOSITY])dnl
AM_BACKSLASH='\'
AC_SUBST([AM_BACKSLASH])dnl
_AM_SUBST_NOTMAKE([AM_BACKSLASH])dnl
])

# Copyright (C) 2001-2021 Free Software Foundation, Inc.
#
# This file is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.

# AM_PROG_INSTALL_STRIP
# ---------------------
# One issue with vendor 'install' (even GNU) is that you can't
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AC_DEFUN([AM_PROG_INSTALL_STRIP],
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# Installed binaries are usually stripped using 'strip' when the user
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# will honor the 'STRIP' environment variable to overrule this program.
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INSTALL_STRIP_PROGRAM="\$(install_sh) -c -s"
AC_SUBST([INSTALL_STRIP_PROGRAM])])

# Copyright (C) 2006-2021 Free Software Foundation, Inc.
#
# This file is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.

# _AM_SUBST_NOTMAKE(VARIABLE)
# ---------------------------
# Prevent Automake from outputting VARIABLE = @VARIABLE@ in Makefile.in.
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AC_DEFUN([_AM_SUBST_NOTMAKE])

# AM_SUBST_NOTMAKE(VARIABLE)
# --------------------------
# Public sister of _AM_SUBST_NOTMAKE.
AC_DEFUN([AM_SUBST_NOTMAKE], [_AM_SUBST_NOTMAKE($@)])

# Check how to create a tarball.                            -*- Autoconf -*-

# Copyright (C) 2004-2021 Free Software Foundation, Inc.
#
# This file is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.

# _AM_PROG_TAR(FORMAT)
# --------------------
# Check how to create a tarball in format FORMAT.
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# Substitute a variable $(am__tar) that is a command
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  AC_CACHE_VAL([am_cv_prog_tar_$1], [am_cv_prog_tar_$1=$_am_tool])
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AC_SUBST([am__tar])
AC_SUBST([am__untar])
]) # _AM_PROG_TAR