scripts/release.sh - platform/external/bc - Git at Google

 #! /bin/sh
 #
 # SPDX-License-Identifier: BSD-2-Clause
 #
 # Copyright (c) 2018-2021 Gavin D. Howard and contributors.
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are met:
 #
 # * Redistributions of source code must retain the above copyright notice, this
 #   list of conditions and the following disclaimer.
 #
 # * Redistributions in binary form must reproduce the above copyright notice,
 #   this list of conditions and the following disclaimer in the documentation
 #   and/or other materials provided with the distribution.
 #
 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 # AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 # ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
 # LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 # CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 # SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 # INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 # CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 # ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 # POSSIBILITY OF SUCH DAMAGE.
 #

 # For OpenBSD, run using the following:
 #
 # scripts/release.sh 1 0 1 0 0 0 0 1 0 0 0 0
 #
 # For FreeBSD, run using the following:
 #
 # scripts/release.sh 1 0 1 0 0 0 0 1 0 1 0 0
 #
 # There is one problem with running this script on FreeBSD: it takes overcommit
 # to the extreme. This means that some tests that try to create allocation
 # failures instead make bc and dc crash. So running this script on FreeBSD does
 # not work right now.
 #
 # For Linux, run two separate ones (in different checkouts), like so:
 #
 # scripts/release.sh 1 1 1 0 1 0 0 1 0 1 0 1
 # scripts/release.sh 1 1 0 1 0 1 0 1 0 1 0 0
 #
 # Yes, I usually do sanitizers with Clang and Valgrind with GCC.
 #
 # To run sanitizers or Valgrind with generated tests, use the following:
 #
 # scripts/release.sh 1 1 1 0 1 0 0 1 0 1 0 1
 # scripts/release.sh 1 1 0 1 0 1 0 1 0 1 0 0
 #
 # If this script fails on any platform when starting the Karatsuba test, check
 # that Python is installed, especially if the error says something like:
 # "karatsuba.py: not found".

 # Print the usage and exit with an error. Each parameter should be an integer.
 # Non-zero activates, and zero deactivates.
 usage() {
 	printf 'usage: %s [run_tests] [generate_tests] [test_with_clang] [test_with_gcc] \n' "$script"
 	printf '          [run_sanitizers] [run_valgrind] [test_settings] [run_64_bit] \n'
 	printf '          [run_gen_script] [test_c11] [test_128_bit] [test_computed_goto]\n'
 	exit 1
 }

 # Print a header with a message. This is just to make it easy to track progress.
 # @param msg  The message to print in the header.
 header() {

 	_header_msg="$1"
 	shift

 	printf '\n'
 	printf '*******************\n'
 	printf "$_header_msg"
 	printf '\n'
 	printf '*******************\n'
 	printf '\n'
 }

 # Easy way to call make.
 do_make() {
 	# No reason to do 64 except to see if I actually can overload my system. :)
 	# Well, also that it might actually improve throughput as other jobs can run
 	# while some are waiting.
 	make -j64 "$@"
 }

 # Run configure.sh.
 # @param CFLAGS           The CFLAGS.
 # @param CC               The C compiler.
 # @param configure_flags  The flags for configure.sh itself.
 # @param GEN_HOST         The setting for GEN_HOST.
 # @param LONG_BIT         The setting for LONG_BIT.
 configure() {

 	_configure_CFLAGS="$1"
 	shift

 	_configure_CC="$1"
 	shift

 	_configure_configure_flags="$1"
 	shift

 	_configure_GEN_HOST="$1"
 	shift

 	_configure_LONG_BIT="$1"
 	shift

 	# Make sure to not generate tests if necessary.
 	if [ "$gen_tests" -eq 0 ]; then
 		_configure_configure_flags="-G $_configure_configure_flags"
 	fi

 	# Choose the right extra flags.
 	if [ "$_configure_CC" = "clang" ]; then
 		_configure_CFLAGS="$clang_flags $_configure_CFLAGS"
 	elif [ "$_configure_CC" = "gcc" ]; then
 		_configure_CFLAGS="$gcc_flags $_configure_CFLAGS"
 	fi

 	# Print the header and do the job.
 	_configure_header=$(printf 'Running ./configure.sh %s ...' "$_configure_configure_flags")
 	_configure_header=$(printf "$_configure_header\n    CC=\"%s\"\n" "$_configure_CC")
 	_configure_header=$(printf "$_configure_header\n    CFLAGS=\"%s\"\n" "$_configure_CFLAGS")
 	_configure_header=$(printf "$_configure_header\n    LONG_BIT=%s" "$_configure_LONG_BIT")
 	_configure_header=$(printf "$_configure_header\n    GEN_HOST=%s" "$_configure_GEN_HOST")

 	header "$_configure_header"
 	CFLAGS="$_configure_CFLAGS" CC="$_configure_CC" GEN_HOST="$_configure_GEN_HOST" \
 		LONG_BIT="$_configure_LONG_BIT" ./configure.sh $_configure_configure_flags > /dev/null
 }

 # Build with make. This function also captures and outputs any warnings if they
 # exists because as far as I am concerned, warnings are not acceptable for
 # release.
 # @param CFLAGS           The CFLAGS.
 # @param CC               The C compiler.
 # @param configure_flags  The flags for configure.sh itself.
 # @param GEN_HOST         The setting for GEN_HOST.
 # @param LONG_BIT         The setting for LONG_BIT.
 build() {

 	_build_CFLAGS="$1"
 	shift

 	_build_CC="$1"
 	shift

 	_build_configure_flags="$1"
 	shift

 	_build_GEN_HOST="$1"
 	shift

 	_build_LONG_BIT="$1"
 	shift

 	configure "$_build_CFLAGS" "$_build_CC" "$_build_configure_flags" "$_build_GEN_HOST" "$_build_LONG_BIT"

 	_build_header=$(printf 'Building...\n    CC=%s' "$_build_CC")
 	_build_header=$(printf "$_build_header\n    CFLAGS=\"%s\"" "$_build_CFLAGS")
 	_build_header=$(printf "$_build_header\n    LONG_BIT=%s" "$_build_LONG_BIT")
 	_build_header=$(printf "$_build_header\n    GEN_HOST=%s" "$_build_GEN_HOST")

 	header "$_build_header"

 	# Capture and print warnings.
 	do_make > /dev/null 2> "$scriptdir/../.test.txt"

 	if [ -s "$scriptdir/../.test.txt" ]; then
 		printf '%s generated warning(s):\n' "$_build_CC"
 		printf '\n'
 		cat "$scriptdir/../.test.txt"
 		exit 1
 	fi
 }

 # Run tests with make.
 runtest() {

 	header "Running tests"

 	if [ "$#" -gt 0 ]; then
 		do_make "$@"
 	else
 		do_make test
 	fi
 }

 # Builds and runs tests with both calculators, then bc only, then dc only. If
 # run_tests is false, then it just does the builds.
 # @param CFLAGS           The CFLAGS.
 # @param CC               The C compiler.
 # @param configure_flags  The flags for configure.sh itself.
 # @param GEN_HOST         The setting for GEN_HOST.
 # @param LONG_BIT         The setting for LONG_BIT.
 # @param run_tests        Whether to run tests or not.
 runconfigtests() {

 	_runconfigtests_CFLAGS="$1"
 	shift

 	_runconfigtests_CC="$1"
 	shift

 	_runconfigtests_configure_flags="$1"
 	shift

 	_runconfigtests_GEN_HOST="$1"
 	shift

 	_runconfigtests_LONG_BIT="$1"
 	shift

 	_runconfigtests_run_tests="$1"
 	shift

 	if [ "$_runconfigtests_run_tests" -ne 0 ]; then
 		_runconfigtests_header=$(printf 'Running tests with configure flags')
 	else
 		_runconfigtests_header=$(printf 'Building with configure flags')
 	fi

 	_runconfigtests_header=$(printf "$_runconfigtests_header \"%s\" ...\n" "$_runconfigtests_configure_flags")
 	_runconfigtests_header=$(printf "$_runconfigtests_header\n    CC=%s\n" "$_runconfigseries_CC")
 	_runconfigtests_header=$(printf "$_runconfigtests_header\n    CFLAGS=\"%s\"" "$_runconfigseries_CFLAGS")
 	_runconfigtests_header=$(printf "$_runconfigtests_header\n    LONG_BIT=%s" "$_runconfigtests_LONG_BIT")
 	_runconfigtests_header=$(printf "$_runconfigtests_header\n    GEN_HOST=%s" "$_runconfigtests_GEN_HOST")

 	header "$_runconfigtests_header"

 	build "$_runconfigtests_CFLAGS" "$_runconfigtests_CC" \
 		"$_runconfigtests_configure_flags" "$_runconfigtests_GEN_HOST" \
 		"$_runconfigtests_LONG_BIT"

 	if [ "$_runconfigtests_run_tests" -ne 0 ]; then
 		runtest
 	fi

 	do_make clean

 	build "$_runconfigtests_CFLAGS" "$_runconfigtests_CC" \
 		"$_runconfigtests_configure_flags -b" "$_runconfigtests_GEN_HOST" \
 		"$_runconfigtests_LONG_BIT"

 	if [ "$_runconfigtests_run_tests" -ne 0 ]; then
 		runtest
 	fi

 	do_make clean

 	build "$_runconfigtests_CFLAGS" "$_runconfigtests_CC" \
 		"$_runconfigtests_configure_flags -d" "$_runconfigtests_GEN_HOST" \
 		"$_runconfigtests_LONG_BIT"

 	if [ "$_runconfigtests_run_tests" -ne 0 ]; then
 		runtest
 	fi

 	do_make clean
 }

 # Builds and runs tests with runconfigtests(), but also does 64-bit, 32-bit, and
 # 128-bit rand, if requested. It also does it with the gen script (strgen.sh) if
 # requested. If run_tests is false, it just does the builds.
 # @param CFLAGS           The CFLAGS.
 # @param CC               The C compiler.
 # @param configure_flags  The flags for configure.sh itself.
 # @param run_tests        Whether to run tests or not.
 runconfigseries() {

 	_runconfigseries_CFLAGS="$1"
 	shift

 	_runconfigseries_CC="$1"
 	shift

 	_runconfigseries_configure_flags="$1"
 	shift

 	_runconfigseries_run_tests="$1"
 	shift

 	if [ "$run_64_bit" -ne 0 ]; then

 		if [ "$test_128_bit" -ne 0 ]; then
 			runconfigtests "$_runconfigseries_CFLAGS" "$_runconfigseries_CC" \
 				"$_runconfigseries_configure_flags" 1 64 "$_runconfigseries_run_tests"
 		fi

 		if [ "$run_gen_script" -ne 0 ]; then
 			runconfigtests "$_runconfigseries_CFLAGS" "$_runconfigseries_CC" \
 				"$_runconfigseries_configure_flags" 0 64 "$_runconfigseries_run_tests"
 		fi

 		runconfigtests "$_runconfigseries_CFLAGS -DBC_RAND_BUILTIN=0" "$_runconfigseries_CC" \
 			"$_runconfigseries_configure_flags" 1 64 "$_runconfigseries_run_tests"

 	fi

 	runconfigtests "$_runconfigseries_CFLAGS" "$_runconfigseries_CC" \
 		"$_runconfigseries_configure_flags" 1 32 "$_runconfigseries_run_tests"

 	if [ "$run_gen_script" -ne 0 ]; then
 		runconfigtests "$_runconfigseries_CFLAGS" "$_runconfigseries_CC" \
 			"$_runconfigseries_configure_flags" 0 32 "$_runconfigseries_run_tests"
 	fi
 }

 # Builds and runs tests with each setting combo running runconfigseries(). If
 # run_tests is false, it just does the builds.
 # @param CFLAGS           The CFLAGS.
 # @param CC               The C compiler.
 # @param configure_flags  The flags for configure.sh itself.
 # @param run_tests        Whether to run tests or not.
 runsettingsseries() {

 	_runsettingsseries_CFLAGS="$1"
 	shift

 	_runsettingsseries_CC="$1"
 	shift

 	_runsettingsseries_configure_flags="$1"
 	shift

 	_runsettingsseries_run_tests="$1"
 	shift

 	if [ "$test_settings" -ne 0 ]; then

 		while read _runsettingsseries_s; do
 			runconfigseries "$_runsettingsseries_CFLAGS" "$_runsettingsseries_CC" \
 				"$_runsettingsseries_configure_flags $_runsettingsseries_s" \
 				"$_runsettingsseries_run_tests"
 		done < "$scriptdir/release_settings.txt"

 	else
 		runconfigseries "$_runsettingsseries_CFLAGS" "$_runsettingsseries_CC" \
 			"$_runsettingsseries_configure_flags" "$_runsettingsseries_run_tests"
 	fi
 }

 # Builds and runs tests with each build type running runsettingsseries(). If
 # run_tests is false, it just does the builds.
 # @param CFLAGS           The CFLAGS.
 # @param CC               The C compiler.
 # @param configure_flags  The flags for configure.sh itself.
 # @param run_tests        Whether to run tests or not.
 runtestseries() {

 	_runtestseries_CFLAGS="$1"
 	shift

 	_runtestseries_CC="$1"
 	shift

 	_runtestseries_configure_flags="$1"
 	shift

 	_runtestseries_run_tests="$1"
 	shift

 	_runtestseries_flags="E H N EH EN HN EHN"

 	runsettingsseries "$_runtestseries_CFLAGS" "$_runtestseries_CC" \
 		"$_runtestseries_configure_flags" "$_runtestseries_run_tests"

 	for _runtestseries_f in $_runtestseries_flags; do
 		runsettingsseries "$_runtestseries_CFLAGS" "$_runtestseries_CC" \
 			"$_runtestseries_configure_flags -$_runtestseries_f" "$_runtestseries_run_tests"
 	done
 }

 # Builds and runs the tests for bcl. If run_tests is false, it just does the
 # builds.
 # @param CFLAGS           The CFLAGS.
 # @param CC               The C compiler.
 # @param configure_flags  The flags for configure.sh itself.
 # @param run_tests        Whether to run tests or not.
 runlibtests() {

 	_runlibtests_CFLAGS="$1"
 	shift

 	_runlibtests_CC="$1"
 	shift

 	_runlibtests_configure_flags="$1"
 	shift

 	_runlibtests_run_tests="$1"
 	shift

 	_runlibtests_configure_flags="$_runlibtests_configure_flags -a"

 	build "$_runlibtests_CFLAGS" "$_runlibtests_CC" "$_runlibtests_configure_flags" 1 64

 	if [ "$_runlibtests_run_tests" -ne 0 ]; then
 		runtest
 	fi

 	build "$_runlibtests_CFLAGS" "$_runlibtests_CC" "$_runlibtests_configure_flags" 1 32

 	if [ "$_runlibtests_run_tests" -ne 0 ]; then
 		runtest
 	fi
 }

 # Builds and runs tests under C99, then C11, if requested, using
 # runtestseries(). If run_tests is false, it just does the builds.
 # @param CFLAGS           The CFLAGS.
 # @param CC               The C compiler.
 # @param configure_flags  The flags for configure.sh itself.
 # @param run_tests        Whether to run tests or not.
 runtests() {

 	_runtests_CFLAGS="$1"
 	shift

 	_runtests_CC="$1"
 	shift

 	_runtests_configure_flags="$1"
 	shift

 	_runtests_run_tests="$1"
 	shift

 	runtestseries "-std=c99 $_runtests_CFLAGS" "$_runtests_CC" "$_runtests_configure_flags" "$_runtests_run_tests"

 	if [ "$test_c11" -ne 0 ]; then
 		runtestseries "-std=c11 $_runtests_CFLAGS" "$_runtests_CC" "$_runtests_configure_flags" "$_runtests_run_tests"
 	fi
 }

 # Runs the karatsuba tests.
 karatsuba() {

 	header "Running Karatsuba tests"
 	do_make karatsuba_test
 }

 # Builds and runs under valgrind. It runs both, bc only, then dc only.
 vg() {

 	header "Running valgrind"

 	if [ "$run_64_bit" -ne 0 ]; then
 		_vg_bits=64
 	else
 		_vg_bits=32
 	fi

 	build "$debug -std=c99" "gcc" "-O3 -gv" "1" "$_vg_bits"
 	runtest test

 	do_make clean_config

 	build "$debug -std=c99" "gcc" "-O3 -gvb" "1" "$_vg_bits"
 	runtest test

 	do_make clean_config

 	build "$debug -std=c99" "gcc" "-O3 -gvd" "1" "$_vg_bits"
 	runtest test

 	do_make clean_config

 	build "$debug -std=c99" "gcc" "-O3 -gva" "1" "$_vg_bits"
 	runtest test

 	do_make clean_config
 }

 # Builds the debug series and runs the tests if run_tests allows. If sanitizers
 # are enabled, it also does UBSan.
 # @param CC         The C compiler.
 # @param run_tests  Whether to run tests or not.
 debug() {

 	_debug_CC="$1"
 	shift

 	_debug_run_tests="$1"
 	shift


 	if [ "$_debug_CC" = "clang" -a "$run_sanitizers" -ne 0 ]; then
 		runtests "$debug -fsanitize=undefined" "$_debug_CC" "-gm" "$_debug_run_tests"
 	else
 		runtests "$debug" "$_debug_CC" "-g" "$_debug_run_tests"
 	fi


 	if [ "$_debug_CC" = "clang" -a "$run_sanitizers" -ne 0 ]; then
 		runlibtests "$debug -fsanitize=undefined" "$_debug_CC" "-gm" "$_debug_run_tests"
 	else
 		runlibtests "$debug" "$_debug_CC" "-g" "$_debug_run_tests"
 	fi
 }

 # Builds the release series and runs the test if run_tests allows.
 # @param CC         The C compiler.
 # @param run_tests  Whether to run tests or not.
 release() {

 	_release_CC="$1"
 	shift

 	_release_run_tests="$1"
 	shift

 	runtests "$release" "$_release_CC" "-O3" "$_release_run_tests"

 	runlibtests "$release" "$_release_CC" "-O3" "$_release_run_tests"
 }

 # Builds the release debug series and runs the test if run_tests allows. If
 # sanitizers are enabled, it also does ASan and MSan.
 # @param CC         The C compiler.
 # @param run_tests  Whether to run tests or not.
 reldebug() {

 	_reldebug_CC="$1"
 	shift

 	_reldebug_run_tests="$1"
 	shift


 	if [ "$_reldebug_CC" = "clang" -a "$run_sanitizers" -ne 0 ]; then
 		runtests "$debug -fsanitize=address" "$_reldebug_CC" "-mgO3" "$_reldebug_run_tests"
 		runtests "$debug -fsanitize=memory" "$_reldebug_CC" "-mgO3" "$_reldebug_run_tests"
 	else
 		runtests "$debug" "$_reldebug_CC" "-gO3" "$_reldebug_run_tests"
 	fi


 	if [ "$_reldebug_CC" = "clang" -a "$run_sanitizers" -ne 0 ]; then
 		runlibtests "$debug -fsanitize=address" "$_reldebug_CC" "-mgO3" "$_reldebug_run_tests"
 		runlibtests "$debug -fsanitize=memory" "$_reldebug_CC" "-mgO3" "$_reldebug_run_tests"
 	else
 		runlibtests "$debug" "$_reldebug_CC" "-gO3" "$_reldebug_run_tests"
 	fi
 }

 # Builds the min size release series and runs the test if run_tests allows.
 # @param CC         The C compiler.
 # @param run_tests  Whether to run tests or not.
 minsize() {

 	_minsize_CC="$1"
 	shift

 	_minsize_run_tests="$1"
 	shift

 	runtests "$release" "$_minsize_CC" "-Os" "$_minsize_run_tests"

 	runlibtests "$release" "$_minsize_CC" "-Os" "$_minsize_run_tests"
 }

 # Builds all sets: debug, release, release debug, and min size, and runs the
 # tests if run_tests allows.
 # @param CC         The C compiler.
 # @param run_tests  Whether to run tests or not.
 build_set() {

 	_build_set_CC="$1"
 	shift

 	_build_set_run_tests="$1"
 	shift

 	debug "$_build_set_CC" "$_build_set_run_tests"
 	release "$_build_set_CC" "$_build_set_run_tests"
 	reldebug "$_build_set_CC" "$_build_set_run_tests"
 	minsize "$_build_set_CC" "$_build_set_run_tests"
 }

 # Set some strict warning flags. Clang's -Weverything can be way too strict, so
 # we actually have to turn off some things.
 clang_flags="-Weverything -Wno-padded -Wno-switch-enum -Wno-format-nonliteral"
 clang_flags="$clang_flags -Wno-cast-align -Wno-missing-noreturn -Wno-disabled-macro-expansion"
 clang_flags="$clang_flags -Wno-unreachable-code -Wno-unreachable-code-return"
 clang_flags="$clang_flags -Wno-implicit-fallthrough -Wno-unused-macros -Wno-gnu-label-as-value"
 gcc_flags="-Wno-maybe-uninitialized -Wno-clobbered"

 # Common CFLAGS.
 cflags="-Wall -Wextra -Werror -pedantic -Wno-conditional-uninitialized"

 # Common debug and release flags.
 debug="$cflags -fno-omit-frame-pointer"
 release="$cflags -DNDEBUG"

 set -e

 script="$0"
 scriptdir=$(dirname "$script")

 # Whether to run tests.
 if [ "$#" -gt 0 ]; then
 	run_tests="$1"
 	shift
 else
 	run_tests=1
 fi

 # Whether to generate tests. On platforms like OpenBSD, there is no GNU bc to
 # generate tests, so this must be off.
 if [ "$#" -gt 0 ]; then
 	gen_tests="$1"
 	shift
 else
 	gen_tests=1
 fi

 # Whether to test with clang.
 if [ "$#" -gt 0 ]; then
 	test_with_clang="$1"
 	shift
 else
 	test_with_clang=1
 fi

 # Whether to test with gcc.
 if [ "$#" -gt 0 ]; then
 	test_with_gcc="$1"
 	shift
 else
 	test_with_gcc=1
 fi

 # Whether to test with sanitizers.
 if [ "$#" -gt 0 ]; then
 	run_sanitizers="$1"
 	shift
 else
 	run_sanitizers=1
 fi

 # Whether to test with valgrind.
 if [ "$#" -gt 0 ]; then
 	run_valgrind="$1"
 	shift
 else
 	run_valgrind=1
 fi

 # Whether to test all settings combos.
 if [ "$#" -gt 0 ]; then
 	test_settings="$1"
 	shift
 else
 	test_settings=1
 fi

 # Whether to test 64-bit in addition to 32-bit.
 if [ "$#" -gt 0 ]; then
 	run_64_bit="$1"
 	shift
 else
 	run_64_bit=1
 fi

 # Whether to test with strgen.sh in addition to strgen.c.
 if [ "$#" -gt 0 ]; then
 	run_gen_script="$1"
 	shift
 else
 	run_gen_script=0
 fi

 # Whether to test on C11 in addition to C99.
 if [ "$#" -gt 0 ]; then
 	test_c11="$1"
 	shift
 else
 	test_c11=0
 fi

 # Whether to test 128-bit integers in addition to no 128-bit integers.
 if [ "$#" -gt 0 ]; then
 	test_128_bit="$1"
 	shift
 else
 	test_128_bit=0
 fi

 # Whether to test with computed goto or not.
 if [ "$#" -gt 0 ]; then
 	test_computed_goto="$1"
 	shift
 else
 	test_computed_goto=0
 fi

 if [ "$run_64_bit" -ne 0 ]; then
 	bits=64
 else
 	bits=32
 fi

 if [ "$test_computed_goto" -eq 0 ]; then
 	clang_flags="-DBC_NO_COMPUTED_GOTO $clang_flags"
 	gcc_flags="-DBC_NO_COMPUTED_GOTO $gcc_flags"
 fi

 cd "$scriptdir/.."

 # Setup a default compiler.
 if [ "$test_with_clang" -ne 0 ]; then
 	defcc="clang"
 elif [ "$test_with_gcc" -ne 0 ]; then
 	defcc="gcc"
 else
 	defcc="c99"
 fi

 export ASAN_OPTIONS="abort_on_error=1,allocator_may_return_null=1"
 export UBSAN_OPTIONS="print_stack_trace=1,silence_unsigned_overflow=1"

 build "$debug -std=c99" "$defcc" "-g" "1" "$bits"

 header "Running math library under --standard"

 # Make sure the math library is POSIX compliant.
 printf 'quit\n' | bin/bc -ls

 do_make clean_tests

 # Run the clang build sets.
 if [ "$test_with_clang" -ne 0 ]; then
 	build_set "clang" "$run_tests"
 fi

 # Run the gcc build sets.
 if [ "$test_with_gcc" -ne 0 ]; then
 	build_set "gcc" "$run_tests"
 fi

 if [ "$run_tests" -ne 0 ]; then

 	build "$release" "$defcc" "-O3" "1" "$bits"

 	# Run karatsuba.
 	karatsuba

 	# Valgrind.
 	if [ "$run_valgrind" -ne 0 -a "$test_with_gcc" -ne 0 ]; then
 		vg
 	fi

 	printf '\n'
 	printf 'Tests successful.\n'

 	# I just assume that I am going to be fuzzing when I am done.
 	header "Building for AFL++..."

 	"$scriptdir/fuzz_prep.sh"

 	printf '\n'
 	printf 'Ready for scripts/randmath.py and for fuzzing.\n'
 	printf '\n'
 	printf 'Run scripts/randmath.py if you changed any math code.\n'
 	printf '\n'
 	printf 'Then if there are no problems, run the fuzzer.\n'
 	printf '\n'
 	printf 'Then run `scripts/fuzz_prep.sh -a`.\n'
 	printf '\n'
 	printf 'Then run `scripts/afl.py --asan`.\n'

 fi
	#! /bin/sh
	#
	# SPDX-License-Identifier: BSD-2-Clause
	#
	# Copyright (c) 2018-2021 Gavin D. Howard and contributors.
	#
	# Redistribution and use in source and binary forms, with or without
	# modification, are permitted provided that the following conditions are met:
	#
	# * Redistributions of source code must retain the above copyright notice, this
	# list of conditions and the following disclaimer.
	#
	# * Redistributions in binary form must reproduce the above copyright notice,
	# this list of conditions and the following disclaimer in the documentation
	# and/or other materials provided with the distribution.
	#
	# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
	# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
	# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
	# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
	# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
	# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
	# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
	# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
	# POSSIBILITY OF SUCH DAMAGE.
	#

	# For OpenBSD, run using the following:
	#
	# scripts/release.sh 1 0 1 0 0 0 0 1 0 0 0 0
	#
	# For FreeBSD, run using the following:
	#
	# scripts/release.sh 1 0 1 0 0 0 0 1 0 1 0 0
	#
	# There is one problem with running this script on FreeBSD: it takes overcommit
	# to the extreme. This means that some tests that try to create allocation
	# failures instead make bc and dc crash. So running this script on FreeBSD does
	# not work right now.
	#
	# For Linux, run two separate ones (in different checkouts), like so:
	#
	# scripts/release.sh 1 1 1 0 1 0 0 1 0 1 0 1
	# scripts/release.sh 1 1 0 1 0 1 0 1 0 1 0 0
	#
	# Yes, I usually do sanitizers with Clang and Valgrind with GCC.
	#
	# To run sanitizers or Valgrind with generated tests, use the following:
	#
	# scripts/release.sh 1 1 1 0 1 0 0 1 0 1 0 1
	# scripts/release.sh 1 1 0 1 0 1 0 1 0 1 0 0
	#
	# If this script fails on any platform when starting the Karatsuba test, check
	# that Python is installed, especially if the error says something like:
	# "karatsuba.py: not found".

	# Print the usage and exit with an error. Each parameter should be an integer.
	# Non-zero activates, and zero deactivates.
	usage() {
	printf 'usage: %s [run_tests] [generate_tests] [test_with_clang] [test_with_gcc] \n' "$script"
	printf ' [run_sanitizers] [run_valgrind] [test_settings] [run_64_bit] \n'
	printf ' [run_gen_script] [test_c11] [test_128_bit] [test_computed_goto]\n'
	exit 1
	}

	# Print a header with a message. This is just to make it easy to track progress.
	# @param msg The message to print in the header.
	header() {

	_header_msg="$1"
	shift

	printf '\n'
	printf '*******************\n'
	printf "$_header_msg"
	printf '\n'
	printf '*******************\n'
	printf '\n'
	}

	# Easy way to call make.
	do_make() {
	# No reason to do 64 except to see if I actually can overload my system. :)
	# Well, also that it might actually improve throughput as other jobs can run
	# while some are waiting.
	make -j64 "$@"
	}

	# Run configure.sh.
	# @param CFLAGS The CFLAGS.
	# @param CC The C compiler.
	# @param configure_flags The flags for configure.sh itself.
	# @param GEN_HOST The setting for GEN_HOST.
	# @param LONG_BIT The setting for LONG_BIT.
	configure() {

	_configure_CFLAGS="$1"
	shift

	_configure_CC="$1"
	shift

	_configure_configure_flags="$1"
	shift

	_configure_GEN_HOST="$1"
	shift

	_configure_LONG_BIT="$1"
	shift

	# Make sure to not generate tests if necessary.
	if [ "$gen_tests" -eq 0 ]; then
	_configure_configure_flags="-G $_configure_configure_flags"
	fi

	# Choose the right extra flags.
	if [ "$_configure_CC" = "clang" ]; then
	_configure_CFLAGS="$clang_flags $_configure_CFLAGS"
	elif [ "$_configure_CC" = "gcc" ]; then
	_configure_CFLAGS="$gcc_flags $_configure_CFLAGS"
	fi

	# Print the header and do the job.
	_configure_header=$(printf 'Running ./configure.sh %s ...' "$_configure_configure_flags")
	_configure_header=$(printf "$_configure_header\n CC=\"%s\"\n" "$_configure_CC")
	_configure_header=$(printf "$_configure_header\n CFLAGS=\"%s\"\n" "$_configure_CFLAGS")
	_configure_header=$(printf "$_configure_header\n LONG_BIT=%s" "$_configure_LONG_BIT")
	_configure_header=$(printf "$_configure_header\n GEN_HOST=%s" "$_configure_GEN_HOST")

	header "$_configure_header"
	CFLAGS="$_configure_CFLAGS" CC="$_configure_CC" GEN_HOST="$_configure_GEN_HOST" \
	LONG_BIT="$_configure_LONG_BIT" ./configure.sh $_configure_configure_flags > /dev/null
	}

	# Build with make. This function also captures and outputs any warnings if they
	# exists because as far as I am concerned, warnings are not acceptable for
	# release.
	# @param CFLAGS The CFLAGS.
	# @param CC The C compiler.
	# @param configure_flags The flags for configure.sh itself.
	# @param GEN_HOST The setting for GEN_HOST.
	# @param LONG_BIT The setting for LONG_BIT.
	build() {

	_build_CFLAGS="$1"
	shift

	_build_CC="$1"
	shift

	_build_configure_flags="$1"
	shift

	_build_GEN_HOST="$1"
	shift

	_build_LONG_BIT="$1"
	shift

	configure "$_build_CFLAGS" "$_build_CC" "$_build_configure_flags" "$_build_GEN_HOST" "$_build_LONG_BIT"

	_build_header=$(printf 'Building...\n CC=%s' "$_build_CC")
	_build_header=$(printf "$_build_header\n CFLAGS=\"%s\"" "$_build_CFLAGS")
	_build_header=$(printf "$_build_header\n LONG_BIT=%s" "$_build_LONG_BIT")
	_build_header=$(printf "$_build_header\n GEN_HOST=%s" "$_build_GEN_HOST")

	header "$_build_header"

	# Capture and print warnings.
	do_make > /dev/null 2> "$scriptdir/../.test.txt"

	if [ -s "$scriptdir/../.test.txt" ]; then
	printf '%s generated warning(s):\n' "$_build_CC"
	printf '\n'
	cat "$scriptdir/../.test.txt"
	exit 1
	fi
	}

	# Run tests with make.
	runtest() {

	header "Running tests"

	if [ "$#" -gt 0 ]; then
	do_make "$@"
	else
	do_make test
	fi
	}

	# Builds and runs tests with both calculators, then bc only, then dc only. If
	# run_tests is false, then it just does the builds.
	# @param CFLAGS The CFLAGS.
	# @param CC The C compiler.
	# @param configure_flags The flags for configure.sh itself.
	# @param GEN_HOST The setting for GEN_HOST.
	# @param LONG_BIT The setting for LONG_BIT.
	# @param run_tests Whether to run tests or not.
	runconfigtests() {

	_runconfigtests_CFLAGS="$1"
	shift

	_runconfigtests_CC="$1"
	shift

	_runconfigtests_configure_flags="$1"
	shift

	_runconfigtests_GEN_HOST="$1"
	shift

	_runconfigtests_LONG_BIT="$1"
	shift

	_runconfigtests_run_tests="$1"
	shift

	if [ "$_runconfigtests_run_tests" -ne 0 ]; then
	_runconfigtests_header=$(printf 'Running tests with configure flags')
	else
	_runconfigtests_header=$(printf 'Building with configure flags')
	fi

	_runconfigtests_header=$(printf "$_runconfigtests_header \"%s\" ...\n" "$_runconfigtests_configure_flags")
	_runconfigtests_header=$(printf "$_runconfigtests_header\n CC=%s\n" "$_runconfigseries_CC")
	_runconfigtests_header=$(printf "$_runconfigtests_header\n CFLAGS=\"%s\"" "$_runconfigseries_CFLAGS")
	_runconfigtests_header=$(printf "$_runconfigtests_header\n LONG_BIT=%s" "$_runconfigtests_LONG_BIT")
	_runconfigtests_header=$(printf "$_runconfigtests_header\n GEN_HOST=%s" "$_runconfigtests_GEN_HOST")

	header "$_runconfigtests_header"

	build "$_runconfigtests_CFLAGS" "$_runconfigtests_CC" \
	"$_runconfigtests_configure_flags" "$_runconfigtests_GEN_HOST" \
	"$_runconfigtests_LONG_BIT"

	if [ "$_runconfigtests_run_tests" -ne 0 ]; then
	runtest
	fi

	do_make clean

	build "$_runconfigtests_CFLAGS" "$_runconfigtests_CC" \
	"$_runconfigtests_configure_flags -b" "$_runconfigtests_GEN_HOST" \
	"$_runconfigtests_LONG_BIT"

	if [ "$_runconfigtests_run_tests" -ne 0 ]; then
	runtest
	fi

	do_make clean

	build "$_runconfigtests_CFLAGS" "$_runconfigtests_CC" \
	"$_runconfigtests_configure_flags -d" "$_runconfigtests_GEN_HOST" \
	"$_runconfigtests_LONG_BIT"

	if [ "$_runconfigtests_run_tests" -ne 0 ]; then
	runtest
	fi

	do_make clean
	}

	# Builds and runs tests with runconfigtests(), but also does 64-bit, 32-bit, and
	# 128-bit rand, if requested. It also does it with the gen script (strgen.sh) if
	# requested. If run_tests is false, it just does the builds.
	# @param CFLAGS The CFLAGS.
	# @param CC The C compiler.
	# @param configure_flags The flags for configure.sh itself.
	# @param run_tests Whether to run tests or not.
	runconfigseries() {

	_runconfigseries_CFLAGS="$1"
	shift

	_runconfigseries_CC="$1"
	shift

	_runconfigseries_configure_flags="$1"
	shift

	_runconfigseries_run_tests="$1"
	shift

	if [ "$run_64_bit" -ne 0 ]; then

	if [ "$test_128_bit" -ne 0 ]; then
	runconfigtests "$_runconfigseries_CFLAGS" "$_runconfigseries_CC" \
	"$_runconfigseries_configure_flags" 1 64 "$_runconfigseries_run_tests"
	fi

	if [ "$run_gen_script" -ne 0 ]; then
	runconfigtests "$_runconfigseries_CFLAGS" "$_runconfigseries_CC" \
	"$_runconfigseries_configure_flags" 0 64 "$_runconfigseries_run_tests"
	fi

	runconfigtests "$_runconfigseries_CFLAGS -DBC_RAND_BUILTIN=0" "$_runconfigseries_CC" \
	"$_runconfigseries_configure_flags" 1 64 "$_runconfigseries_run_tests"

	fi

	runconfigtests "$_runconfigseries_CFLAGS" "$_runconfigseries_CC" \
	"$_runconfigseries_configure_flags" 1 32 "$_runconfigseries_run_tests"

	if [ "$run_gen_script" -ne 0 ]; then
	runconfigtests "$_runconfigseries_CFLAGS" "$_runconfigseries_CC" \
	"$_runconfigseries_configure_flags" 0 32 "$_runconfigseries_run_tests"
	fi
	}

	# Builds and runs tests with each setting combo running runconfigseries(). If
	# run_tests is false, it just does the builds.
	# @param CFLAGS The CFLAGS.
	# @param CC The C compiler.
	# @param configure_flags The flags for configure.sh itself.
	# @param run_tests Whether to run tests or not.
	runsettingsseries() {

	_runsettingsseries_CFLAGS="$1"
	shift

	_runsettingsseries_CC="$1"
	shift

	_runsettingsseries_configure_flags="$1"
	shift

	_runsettingsseries_run_tests="$1"
	shift

	if [ "$test_settings" -ne 0 ]; then

	while read _runsettingsseries_s; do
	runconfigseries "$_runsettingsseries_CFLAGS" "$_runsettingsseries_CC" \
	"$_runsettingsseries_configure_flags $_runsettingsseries_s" \
	"$_runsettingsseries_run_tests"
	done < "$scriptdir/release_settings.txt"

	else
	runconfigseries "$_runsettingsseries_CFLAGS" "$_runsettingsseries_CC" \
	"$_runsettingsseries_configure_flags" "$_runsettingsseries_run_tests"
	fi
	}

	# Builds and runs tests with each build type running runsettingsseries(). If
	# run_tests is false, it just does the builds.
	# @param CFLAGS The CFLAGS.
	# @param CC The C compiler.
	# @param configure_flags The flags for configure.sh itself.
	# @param run_tests Whether to run tests or not.
	runtestseries() {

	_runtestseries_CFLAGS="$1"
	shift

	_runtestseries_CC="$1"
	shift

	_runtestseries_configure_flags="$1"
	shift

	_runtestseries_run_tests="$1"
	shift

	_runtestseries_flags="E H N EH EN HN EHN"

	runsettingsseries "$_runtestseries_CFLAGS" "$_runtestseries_CC" \
	"$_runtestseries_configure_flags" "$_runtestseries_run_tests"

	for _runtestseries_f in $_runtestseries_flags; do
	runsettingsseries "$_runtestseries_CFLAGS" "$_runtestseries_CC" \
	"$_runtestseries_configure_flags -$_runtestseries_f" "$_runtestseries_run_tests"
	done
	}

	# Builds and runs the tests for bcl. If run_tests is false, it just does the
	# builds.
	# @param CFLAGS The CFLAGS.
	# @param CC The C compiler.
	# @param configure_flags The flags for configure.sh itself.
	# @param run_tests Whether to run tests or not.
	runlibtests() {

	_runlibtests_CFLAGS="$1"
	shift

	_runlibtests_CC="$1"
	shift

	_runlibtests_configure_flags="$1"
	shift

	_runlibtests_run_tests="$1"
	shift

	_runlibtests_configure_flags="$_runlibtests_configure_flags -a"

	build "$_runlibtests_CFLAGS" "$_runlibtests_CC" "$_runlibtests_configure_flags" 1 64

	if [ "$_runlibtests_run_tests" -ne 0 ]; then
	runtest
	fi

	build "$_runlibtests_CFLAGS" "$_runlibtests_CC" "$_runlibtests_configure_flags" 1 32

	if [ "$_runlibtests_run_tests" -ne 0 ]; then
	runtest
	fi
	}

	# Builds and runs tests under C99, then C11, if requested, using
	# runtestseries(). If run_tests is false, it just does the builds.
	# @param CFLAGS The CFLAGS.
	# @param CC The C compiler.
	# @param configure_flags The flags for configure.sh itself.
	# @param run_tests Whether to run tests or not.
	runtests() {

	_runtests_CFLAGS="$1"
	shift

	_runtests_CC="$1"
	shift

	_runtests_configure_flags="$1"
	shift

	_runtests_run_tests="$1"
	shift

	runtestseries "-std=c99 $_runtests_CFLAGS" "$_runtests_CC" "$_runtests_configure_flags" "$_runtests_run_tests"

	if [ "$test_c11" -ne 0 ]; then
	runtestseries "-std=c11 $_runtests_CFLAGS" "$_runtests_CC" "$_runtests_configure_flags" "$_runtests_run_tests"
	fi
	}

	# Runs the karatsuba tests.
	karatsuba() {

	header "Running Karatsuba tests"
	do_make karatsuba_test
	}

	# Builds and runs under valgrind. It runs both, bc only, then dc only.
	vg() {

	header "Running valgrind"

	if [ "$run_64_bit" -ne 0 ]; then
	_vg_bits=64
	else
	_vg_bits=32
	fi

	build "$debug -std=c99" "gcc" "-O3 -gv" "1" "$_vg_bits"
	runtest test

	do_make clean_config

	build "$debug -std=c99" "gcc" "-O3 -gvb" "1" "$_vg_bits"
	runtest test

	do_make clean_config

	build "$debug -std=c99" "gcc" "-O3 -gvd" "1" "$_vg_bits"
	runtest test

	do_make clean_config

	build "$debug -std=c99" "gcc" "-O3 -gva" "1" "$_vg_bits"
	runtest test

	do_make clean_config
	}

	# Builds the debug series and runs the tests if run_tests allows. If sanitizers
	# are enabled, it also does UBSan.
	# @param CC The C compiler.
	# @param run_tests Whether to run tests or not.
	debug() {

	_debug_CC="$1"
	shift

	_debug_run_tests="$1"
	shift


	if [ "$_debug_CC" = "clang" -a "$run_sanitizers" -ne 0 ]; then
	runtests "$debug -fsanitize=undefined" "$_debug_CC" "-gm" "$_debug_run_tests"
	else
	runtests "$debug" "$_debug_CC" "-g" "$_debug_run_tests"
	fi


	if [ "$_debug_CC" = "clang" -a "$run_sanitizers" -ne 0 ]; then
	runlibtests "$debug -fsanitize=undefined" "$_debug_CC" "-gm" "$_debug_run_tests"
	else
	runlibtests "$debug" "$_debug_CC" "-g" "$_debug_run_tests"
	fi
	}

	# Builds the release series and runs the test if run_tests allows.
	# @param CC The C compiler.
	# @param run_tests Whether to run tests or not.
	release() {

	_release_CC="$1"
	shift

	_release_run_tests="$1"
	shift

	runtests "$release" "$_release_CC" "-O3" "$_release_run_tests"

	runlibtests "$release" "$_release_CC" "-O3" "$_release_run_tests"
	}

	# Builds the release debug series and runs the test if run_tests allows. If
	# sanitizers are enabled, it also does ASan and MSan.
	# @param CC The C compiler.
	# @param run_tests Whether to run tests or not.
	reldebug() {

	_reldebug_CC="$1"
	shift

	_reldebug_run_tests="$1"
	shift


	if [ "$_reldebug_CC" = "clang" -a "$run_sanitizers" -ne 0 ]; then
	runtests "$debug -fsanitize=address" "$_reldebug_CC" "-mgO3" "$_reldebug_run_tests"
	runtests "$debug -fsanitize=memory" "$_reldebug_CC" "-mgO3" "$_reldebug_run_tests"
	else
	runtests "$debug" "$_reldebug_CC" "-gO3" "$_reldebug_run_tests"
	fi


	if [ "$_reldebug_CC" = "clang" -a "$run_sanitizers" -ne 0 ]; then
	runlibtests "$debug -fsanitize=address" "$_reldebug_CC" "-mgO3" "$_reldebug_run_tests"
	runlibtests "$debug -fsanitize=memory" "$_reldebug_CC" "-mgO3" "$_reldebug_run_tests"
	else
	runlibtests "$debug" "$_reldebug_CC" "-gO3" "$_reldebug_run_tests"
	fi
	}

	# Builds the min size release series and runs the test if run_tests allows.
	# @param CC The C compiler.
	# @param run_tests Whether to run tests or not.
	minsize() {

	_minsize_CC="$1"
	shift

	_minsize_run_tests="$1"
	shift

	runtests "$release" "$_minsize_CC" "-Os" "$_minsize_run_tests"

	runlibtests "$release" "$_minsize_CC" "-Os" "$_minsize_run_tests"
	}

	# Builds all sets: debug, release, release debug, and min size, and runs the
	# tests if run_tests allows.
	# @param CC The C compiler.
	# @param run_tests Whether to run tests or not.
	build_set() {

	_build_set_CC="$1"
	shift

	_build_set_run_tests="$1"
	shift

	debug "$_build_set_CC" "$_build_set_run_tests"
	release "$_build_set_CC" "$_build_set_run_tests"
	reldebug "$_build_set_CC" "$_build_set_run_tests"
	minsize "$_build_set_CC" "$_build_set_run_tests"
	}

	# Set some strict warning flags. Clang's -Weverything can be way too strict, so
	# we actually have to turn off some things.
	clang_flags="-Weverything -Wno-padded -Wno-switch-enum -Wno-format-nonliteral"
	clang_flags="$clang_flags -Wno-cast-align -Wno-missing-noreturn -Wno-disabled-macro-expansion"
	clang_flags="$clang_flags -Wno-unreachable-code -Wno-unreachable-code-return"
	clang_flags="$clang_flags -Wno-implicit-fallthrough -Wno-unused-macros -Wno-gnu-label-as-value"
	gcc_flags="-Wno-maybe-uninitialized -Wno-clobbered"

	# Common CFLAGS.
	cflags="-Wall -Wextra -Werror -pedantic -Wno-conditional-uninitialized"

	# Common debug and release flags.
	debug="$cflags -fno-omit-frame-pointer"
	release="$cflags -DNDEBUG"

	set -e

	script="$0"
	scriptdir=$(dirname "$script")

	# Whether to run tests.
	if [ "$#" -gt 0 ]; then
	run_tests="$1"
	shift
	else
	run_tests=1
	fi

	# Whether to generate tests. On platforms like OpenBSD, there is no GNU bc to
	# generate tests, so this must be off.
	if [ "$#" -gt 0 ]; then
	gen_tests="$1"
	shift
	else
	gen_tests=1
	fi

	# Whether to test with clang.
	if [ "$#" -gt 0 ]; then
	test_with_clang="$1"
	shift
	else
	test_with_clang=1
	fi

	# Whether to test with gcc.
	if [ "$#" -gt 0 ]; then
	test_with_gcc="$1"
	shift
	else
	test_with_gcc=1
	fi

	# Whether to test with sanitizers.
	if [ "$#" -gt 0 ]; then
	run_sanitizers="$1"
	shift
	else
	run_sanitizers=1
	fi

	# Whether to test with valgrind.
	if [ "$#" -gt 0 ]; then
	run_valgrind="$1"
	shift
	else
	run_valgrind=1
	fi

	# Whether to test all settings combos.
	if [ "$#" -gt 0 ]; then
	test_settings="$1"
	shift
	else
	test_settings=1
	fi

	# Whether to test 64-bit in addition to 32-bit.
	if [ "$#" -gt 0 ]; then
	run_64_bit="$1"
	shift
	else
	run_64_bit=1
	fi

	# Whether to test with strgen.sh in addition to strgen.c.
	if [ "$#" -gt 0 ]; then
	run_gen_script="$1"
	shift
	else
	run_gen_script=0
	fi

	# Whether to test on C11 in addition to C99.
	if [ "$#" -gt 0 ]; then
	test_c11="$1"
	shift
	else
	test_c11=0
	fi

	# Whether to test 128-bit integers in addition to no 128-bit integers.
	if [ "$#" -gt 0 ]; then
	test_128_bit="$1"
	shift
	else
	test_128_bit=0
	fi

	# Whether to test with computed goto or not.
	if [ "$#" -gt 0 ]; then
	test_computed_goto="$1"
	shift
	else
	test_computed_goto=0
	fi

	if [ "$run_64_bit" -ne 0 ]; then
	bits=64
	else
	bits=32
	fi

	if [ "$test_computed_goto" -eq 0 ]; then
	clang_flags="-DBC_NO_COMPUTED_GOTO $clang_flags"
	gcc_flags="-DBC_NO_COMPUTED_GOTO $gcc_flags"
	fi

	cd "$scriptdir/.."

	# Setup a default compiler.
	if [ "$test_with_clang" -ne 0 ]; then
	defcc="clang"
	elif [ "$test_with_gcc" -ne 0 ]; then
	defcc="gcc"
	else
	defcc="c99"
	fi

	export ASAN_OPTIONS="abort_on_error=1,allocator_may_return_null=1"
	export UBSAN_OPTIONS="print_stack_trace=1,silence_unsigned_overflow=1"

	build "$debug -std=c99" "$defcc" "-g" "1" "$bits"

	header "Running math library under --standard"

	# Make sure the math library is POSIX compliant.
	printf 'quit\n' \| bin/bc -ls

	do_make clean_tests

	# Run the clang build sets.
	if [ "$test_with_clang" -ne 0 ]; then
	build_set "clang" "$run_tests"
	fi

	# Run the gcc build sets.
	if [ "$test_with_gcc" -ne 0 ]; then
	build_set "gcc" "$run_tests"
	fi

	if [ "$run_tests" -ne 0 ]; then

	build "$release" "$defcc" "-O3" "1" "$bits"

	# Run karatsuba.
	karatsuba

	# Valgrind.
	if [ "$run_valgrind" -ne 0 -a "$test_with_gcc" -ne 0 ]; then
	vg
	fi

	printf '\n'
	printf 'Tests successful.\n'

	# I just assume that I am going to be fuzzing when I am done.
	header "Building for AFL++..."

	"$scriptdir/fuzz_prep.sh"

	printf '\n'
	printf 'Ready for scripts/randmath.py and for fuzzing.\n'
	printf '\n'
	printf 'Run scripts/randmath.py if you changed any math code.\n'
	printf '\n'
	printf 'Then if there are no problems, run the fuzzer.\n'
	printf '\n'
	printf 'Then run `scripts/fuzz_prep.sh -a`.\n'
	printf '\n'
	printf 'Then run `scripts/afl.py --asan`.\n'

	fi