Blame sofort/cfgtest/cfgtest.sh

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# cfgtest.sh: sofort's config test framework,
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# for use from within a project's custom cfgdefs.sh.
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# this file is covered by COPYING.SOFORT.
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# in the common scenario, host-specific tests are preceded
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# by a single invocation of cfgtest_host_section, whereas
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# native (build) system tests are preceded by the invocation
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# of cfgtest_native_section.
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# cfgdefs fraework variables:
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# mb_cfgtest_cc:      the compiler used for the current test
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# mb_cfgtest_cflags:  the compiler flags used for the current test
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# mb_cfgtest_cfgtype: the type of the current test (host/native)
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# mb_cfgtest_makevar: the make variable affected by the current test
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# mb_cfgtest_headers: headers for ad-hoc inclusion with the current test
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cfgtest_newline()
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{
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	printf '\n' >> $mb_pwd/cfgdefs.mk
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}
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cfgtest_comment()
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{
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	mb_internal_str='#'
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	for mb_internal_arg ; do
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		mb_internal_str="$mb_internal_str $mb_internal_arg"
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	done
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	printf '%s\n' "$mb_internal_str" >> $mb_pwd/cfgdefs.mk
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}
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cfgtest_host_section()
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{
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	mb_cfgtest_cc="$ccenv_host_cc"
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	mb_cfgtest_cfgtype='host'
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	mb_cfgtest_cflags=$(make -s -f "$mb_pwd/Makefile.tmp" .cflags-host)
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	cfgtest_comment 'host-specific tests'
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}
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cfgtest_native_section()
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{
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	mb_cfgtest_cc="$mb_native_cc"
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	mb_cfgtest_cfgtype='native'
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	mb_cfgtest_cflags=$(make -s -f "$mb_pwd/Makefile.tmp" .cflags-native)
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	cfgtest_comment 'native system tests'
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}
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cfgtest_prolog()
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{
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	cfgtest_line_dots='.......................'
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	cfgtest_line_dots="${cfgtest_line_dots}${cfgtest_line_dots}"
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	cfgtest_tool_desc=" == trying ${mb_cfgtest_cfgtype} ${1}: ${2}"
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	cfgtest_tool_dlen="${#cfgtest_line_dots}"
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	printf '\n%s\n' '________________________' >&3
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	printf "cfgtest: probing for ${mb_cfgtest_cfgtype} ${1}: ${2}\n\n" >&3
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	printf "%${cfgtest_tool_dlen}.${cfgtest_tool_dlen}s" \
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		"${cfgtest_tool_desc}  ${mb_line_dots}"
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}
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cfgtest_epilog()
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{
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	cfgtest_line_dots='.......................'
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	cfgtest_tool_dlen="$((${#cfgtest_line_dots} - ${#2}))"
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	printf "%${cfgtest_tool_dlen}.${cfgtest_tool_dlen}s  %s.\n" \
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		"${cfgtest_line_dots}" "${2}"
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	if [ "${2}" = '-----' ]; then
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		printf '\n\ncfgtest: %s is missing or cannot be found.\n' "${1}" >&3
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		printf '%s\n' '------------------------' >&3
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		return 1
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	elif [ "${1}" = 'size-of-type' ] && [ "${2}" = '(error)' ]; then
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		printf '\n\ncfgtest: could not determine size of type.\n' >&3
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		printf '%s\n' '------------------------' >&3
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		return 1
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	elif [ "${2}" = '(error)' ]; then
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		printf '\n\ncfgtest: %s is not defined or cannot be used.\n' "${1}" >&3
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		printf '%s\n' '------------------------' >&3
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		return 1
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	fi
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}
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cfgtest_entity_size_prolog()
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{
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	cfgtest_line_dots='.......................'
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	cfgtest_line_dots="${cfgtest_line_dots}${cfgtest_line_dots}"
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	cfgtest_tool_desc=" == checking size of ${mb_cfgtest_cfgtype} type: ${@}"
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	cfgtest_tool_dlen="${#cfgtest_line_dots}"
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	printf '\n%s\n' '________________________' >&3
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	printf "cfgtest: checking size of ${mb_cfgtest_cfgtype} type: ${@}\n\n" >&3
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	printf "%${cfgtest_tool_dlen}.${cfgtest_tool_dlen}s" \
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		"${cfgtest_tool_desc}  ${mb_line_dots}"
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}
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cfgtest_makevar_append()
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{
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	mb_internal_str='+='
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	for mb_internal_arg ; do
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		if ! [ -z "$mb_internal_arg" ]; then
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			mb_internal_str="$mb_internal_str $mb_internal_arg"
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		fi
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	done
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	printf '%-24s%s\n' "$mb_cfgtest_makevar" "$mb_internal_str" \
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		>> $mb_pwd/cfgdefs.mk
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	unset cfgtest_internal_unit_test
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}
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cfgtest_cflags_append()
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{
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	if [ $mb_cfgtest_cfgtype = 'host' ]; then
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		mb_internal_makevar='CFLAGS_CONFIG'
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	else
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		mb_internal_makevar='NATIVE_CFLAGS'
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	fi
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	mb_cfgtest_makevar_saved=$mb_cfgtest_makevar
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	mb_cfgtest_makevar=$mb_internal_makevar
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	cfgtest_makevar_append "$@"
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	mb_cfgtest_makevar=$mb_cfgtest_makevar_saved
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}
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cfgtest_ldflags_append()
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{
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	if [ $mb_cfgtest_cfgtype = 'host' ]; then
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		mb_internal_makevar='LDFLAGS_CONFIG'
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	else
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		mb_internal_makevar='NATIVE_LDFLAGS'
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	fi
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	mb_cfgtest_makevar_saved=$mb_cfgtest_makevar
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	mb_cfgtest_makevar=$mb_internal_makevar
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	cfgtest_makevar_append "$@"
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	mb_cfgtest_makevar=$mb_cfgtest_makevar_saved
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}
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cfgtest_header_presence()
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{
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	cfgtest_prolog 'header' "${1}"
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	printf '%s -E -xc - \\\n' "$mb_cfgtest_cc"  >&3
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	for cfgtest_cflag in $mb_cfgtest_cflags; do
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		printf '\t%s \\\n' "$cfgtest_cflag" >&3
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	done
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	printf '\t%s\n\n' '--include='"${1}" >&3
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	cfgtest_cmd=$(printf '%s -E -xc - %s %s'     \
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		"$mb_cfgtest_cc" "$mb_cfgtest_cflags" \
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		'--include='"${1}")
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	$(printf '%s' "$cfgtest_cmd")    \
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		< /dev/null               \
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		> /dev/null 2>&3           \
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	|| cfgtest_epilog 'header' '-----'  \
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	|| return
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	mb_internal_str=$(printf '%s%s' '-DHAVE_' "${1}"  \
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			| sed -e 's/\./_/g' -e 's@/@_@g'  \
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			| tr "[:lower:]" "[:upper:]")
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	if [ -z ${cfgtest_internal_unit_test:-} ]; then
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		cfgtest_cflags_append "$mb_internal_str"
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	else
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		cfgtest_makevar_append "$mb_internal_str"
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	fi
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	printf 'cfgtest: %s header <%s> was found and may be included.\n' \
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		"$mb_cfgtest_cfgtype" "${1}" >&3
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	printf '%s\n' '------------------------' >&3
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	cfgtest_epilog 'header' "${1}"
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}
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cfgtest_header_absence()
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{
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	cfgtest_prolog 'header absence' "${1}"
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	printf '%s -E -xc - \\\n' "$mb_cfgtest_cc"  >&3
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	for cfgtest_cflag in $mb_cfgtest_cflags; do
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		printf '\t%s \\\n' "$cfgtest_cflag" >&3
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	done
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	printf '\t%s\n\n' '--include='"${1}" >&3
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	cfgtest_cmd=$(printf '%s -E -xc - %s %s'     \
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		"$mb_cfgtest_cc" "$mb_cfgtest_cflags" \
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		'--include='"${1}")
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	$(printf '%s' "$cfgtest_cmd")  \
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		< /dev/null             \
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		> /dev/null 2>&3         \
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	&& cfgtest_epilog 'header' "${1}" \
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	&& return
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	mb_internal_str=$(printf '%s%s' '-DHAVE_NO_' "$@" \
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			| sed -e 's/\./_/g' -e 's@/@_@g'  \
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			| tr "[:lower:]" "[:upper:]")
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	if [ -z ${cfgtest_internal_unit_test:-} ]; then
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		cfgtest_cflags_append "$mb_internal_str"
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	else
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		cfgtest_makevar_append "$mb_internal_str"
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	fi
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	printf 'cfgtest: %s header <%s> may not be included.\n' \
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		"$mb_cfgtest_cfgtype" "${1}" >&3
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	printf '%s\n' '------------------------' >&3
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	cfgtest_epilog 'header' '-----'
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}
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cfgtest_interface_presence()
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{
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	cfgtest_prolog 'interface' "${1}"
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	mb_internal_cflags=
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	for mb_header in $mb_cfgtest_headers; do
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		mb_internal_cflags="$mb_internal_cflags --include=$mb_header"
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	done
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	cfgtest_code_snippet=$(printf 'void * addr = &%;;' "${1}")
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	printf 'printf %s "%s" \\\n' "'%s'" "$cfgtest_code_snippet" >&3
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	printf '| %s -S -xc - -o -' "$mb_cfgtest_cc"  >&3
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	for cfgtest_cflag in $mb_cfgtest_cflags; do
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		printf ' \\\n\t%s' "$cfgtest_cflag" >&3
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	done
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	for cfgtest_cflag in $mb_internal_cflags; do
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		printf ' \\\n\t%s' "$cfgtest_cflag" >&3
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	done
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	printf '\n\n' >&3
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	cfgtest_cmd=$(printf '%s -S -xc - -o - %s %s'  \
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		"$mb_cfgtest_cc" "$mb_cfgtest_cflags" \
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		"$mb_internal_cflags")
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	printf '%s' "$cfgtest_code_snippet"     \
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		| $(printf '%s' "$cfgtest_cmd") \
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                > /dev/null 2>&3                \
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       || cfgtest_epilog 'interface' '(error)'  \
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       || return
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	mb_internal_str=$(printf '%s%s' '-DHAVE_' "$@"  \
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			| sed -e 's/\./_/g'             \
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			| tr "[:lower:]" "[:upper:]")
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	if [ -z ${cfgtest_internal_unit_test:-} ]; then
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		cfgtest_cflags_append "$mb_internal_str"
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	else
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		cfgtest_makevar_append "$mb_internal_str"
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	fi
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	printf 'cfgtest: %s interface `%s'"'"' is available.\n' \
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		"$mb_cfgtest_cfgtype" "${1}" >&3
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	printf '%s\n' '------------------------' >&3
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	cfgtest_epilog 'interface' "${1}"
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	return 0
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}
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cfgtest_decl_presence()
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{
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	cfgtest_prolog 'decl' "${1}"
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	mb_internal_cflags=
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	for mb_header in $mb_cfgtest_headers; do
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		mb_internal_cflags="$mb_internal_cflags --include=$mb_header"
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	done
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	cfgtest_code_snippet=$(printf 'void * any = (void *)(%s);' "${1}")
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	printf 'printf %s "%s" \\\n' "'%s'" "$cfgtest_code_snippet" >&3
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	printf '| %s -S -xc - -o -' "$mb_cfgtest_cc"  >&3
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	for cfgtest_cflag in $mb_cfgtest_cflags; do
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		printf ' \\\n\t%s' "$cfgtest_cflag" >&3
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	done
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	for cfgtest_cflag in $mb_internal_cflags; do
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		printf ' \\\n\t%s' "$cfgtest_cflag" >&3
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	done
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	printf '\n\n' >&3
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	cfgtest_cmd=$(printf '%s -S -xc - -o - %s %s' \
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		"$mb_cfgtest_cc" "$mb_cfgtest_cflags" \
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		"$mb_internal_cflags")
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	printf '%s' "$cfgtest_code_snippet"     \
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		| $(printf '%s' "$cfgtest_cmd") \
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                > /dev/null 2>&3                \
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       || cfgtest_epilog 'decl' '(error)'     \
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       || return
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	# does the argument solely consist of the macro or enum member name?
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	mb_internal_str=$(printf '%s' "$@" | tr -d '[a-z][A-Z][0-9][_]')
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	if [ -n "$mb_internal_str" ]; then
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		cfgtest_epilog 'decl' '(defined)'
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		return 0
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	fi
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	mb_internal_str=$(printf '%s%s' '-DHAVE_DECL_' "$@"  \
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			| sed -e 's/\./_/g'                  \
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			| tr "[:lower:]" "[:upper:]")
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	if [ -z ${cfgtest_internal_unit_test:-} ]; then
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		cfgtest_cflags_append "$mb_internal_str"
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	else
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		cfgtest_makevar_append "$mb_internal_str"
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	fi
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	printf 'cfgtest: `%s'"'"' is defined for the %s system.\n' \
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		"${1}" "$mb_cfgtest_cfgtype" >&3
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	printf '%s\n' '------------------------' >&3
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	cfgtest_epilog 'decl' '(defined)'
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	return 0
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}
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cfgtest_type_size()
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{
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	cfgtest_entity_size_prolog "$@"
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	mb_internal_cflags=''
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	mb_internal_size=''
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	mb_internal_test='char x[(sizeof(%s) == %s) ? 1 : -1];'
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	for mb_header in $mb_cfgtest_headers; do
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		mb_internal_cflags="$mb_internal_cflags --include=$mb_header"
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	done
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	for mb_internal_guess in 8 4 2 1 16 32 64 128; do
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		if [ -z $mb_internal_size ]; then
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			mb_internal_type="$@"
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			mb_internal_str=$(printf "$mb_internal_test"    \
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				"$mb_internal_type"                     \
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				"$mb_internal_guess")
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			printf '%s' "$mb_internal_str"                  \
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					| $mb_cfgtest_cc -S -xc - -o -  \
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					  $mb_cfgtest_cflags            \
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					  $mb_internal_cflags           \
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				> /dev/null 2>/dev/null                 \
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			&& mb_internal_size=$mb_internal_guess
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		fi
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	done
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	# unrecognized type, or type size not within range
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	if [ -z $mb_internal_size ]; then
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		cfgtest_epilog 'size-of-type' '(error)'
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		return 1
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	fi
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	# -DSIZEOF_TYPE=SIZE
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	mb_internal_str=$(printf '%s%s=%s' '-DSIZEOF_'        \
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				"$mb_internal_type"           \
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				"$mb_internal_size"           \
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			| sed -e 's/\ /_/g' -e 's/*/P/g'      \
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			| tr "[:lower:]" "[:upper:]")
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	if [ -z ${cfgtest_internal_unit_test:-} ]; then
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		cfgtest_cflags_append "$mb_internal_str"
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	else
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		cfgtest_makevar_append "$mb_internal_str"
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	fi
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	printf 'cfgtest: size of type `%s'"'"' determined to be %s\n' \
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		"${@}" "$mb_internal_size" >&3
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	printf '%s\n' '------------------------' >&3
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	cfgtest_epilog 'size-of-type' "$mb_internal_size"
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	return 0
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}
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cfgtest_code_snippet()
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{
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	mb_internal_cflags=''
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	mb_internal_test="$@"
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	for mb_header in $mb_cfgtest_headers; do
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		mb_internal_cflags="$mb_internal_cflags --include=$mb_header"
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	done
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	printf '%s' "$mb_internal_test"                 \
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			| $mb_cfgtest_cc -S -xc - -o -  \
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			  $mb_cfgtest_cflags            \
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			  $mb_internal_cflags           \
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		> /dev/null 2>/dev/null                 \
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	|| return 1
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	return 0
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}
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cfgtest_code_snippet_asm()
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{
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	mb_internal_cflags=''
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	mb_internal_test="$@"
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	cfgtest_tmp=$(mktemp ./tmp_XXXXXXXXXXXXXXXX)
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	cfgtest_ret=1
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	for mb_header in $mb_cfgtest_headers; do
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		mb_internal_cflags="$mb_internal_cflags --include=$mb_header"
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	done
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	printf '%s' "$mb_internal_test"                 \
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			| $mb_cfgtest_cc -c -xc -       \
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			  -o $cfgtest_tmp               \
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			  $mb_cfgtest_cflags            \
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			  $mb_internal_cflags           \
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		> /dev/null 2>/dev/null                 \
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	&& cfgtest_ret=0
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	rm -f "$cfgtest_tmp"
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	unset cfgtest_tmp
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	return $cfgtest_ret
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}
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cfgtest_library_presence()
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{
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	cfgtest_libs=
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	cfgtest_spc=
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	for cfgtest_lib in ${@}; do
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		cfgtest_libs="$cfgtest_libs$cfgtest_spc$cfgtest_lib"
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		cfgtest_spc=' '
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	done
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	if [ "${1}" = "$cfgtest_libs" ]; then
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		cfgtest_prolog 'library' "${1#*-l}"
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	else
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		cfgtest_prolog 'lib module' '(see config.log)'
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	fi
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	cfgtest_code_snippet='int main(void){return 0;}'
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	printf 'printf %s "%s" \\\n' "'%s'" "$cfgtest_code_snippet" >&3
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	printf '| %s -o a.out -xc -' "$mb_cfgtest_cc"  >&3
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	for cfgtest_cflag in $mb_cfgtest_cflags; do
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		printf ' \\\n\t%s' "$cfgtest_cflag" >&3
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	done
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	for cfgtest_lib in ${@}; do
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		printf ' \\\n\t%s' "$cfgtest_lib" >&3
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	done
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	printf '\n\n' >&3
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	cfgtest_cmd=$(printf '%s -o a.out -xc - %s' \
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		"$mb_cfgtest_cc" "$mb_cfgtest_cflags")
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	cfgtest_cmd="$cfgtest_cmd $cfgtest_libs"
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	printf '%s' "$cfgtest_code_snippet"          \
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		| $(printf '%s' "$cfgtest_cmd")      \
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		> /dev/null 2>&3                     \
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	|| cfgtest_epilog 'library' '-----'          \
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	|| return 1
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	rm -f a.out
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	printf 'cfgtest: `%s'"'"' was accepted by the linker driver.\n' \
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		"$cfgtest_libs" >&3
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	printf '%s\n' '------------------------' >&3
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	cfgtest_epilog 'library' '(present)'
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	return 0
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}
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cfgtest_unit_header_presence()
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{
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	cfgtest_internal_unit_test='unit_test'
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	cfgtest_header_presence "$@" || return 1
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	return 0
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}
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cfgtest_unit_header_absence()
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{
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	cfgtest_internal_unit_test='unit_test'
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	cfgtest_header_absence "$@" || return 1
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	return 0
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}
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cfgtest_unit_interface_presence()
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{
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	cfgtest_internal_unit_test='unit_test'
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	cfgtest_interface_presence "$@" || return 1
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	return 0
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}
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cfgtest_unit_decl_presence()
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{
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	cfgtest_internal_unit_test='unit_test'
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	cfgtest_decl_presence "$@" || return 1
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	return 0
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}
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cfgtest_unit_type_size()
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{
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	cfgtest_internal_unit_test='unit_test'
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	cfgtest_type_size "$@" || return 1
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	return 0
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}