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configure
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/
configure
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#!/bin/sh
# A script-only build utility like autotools
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http:##www.apache.org#licenses#LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
# Copyright (C) 2022-present, TBOOX Open Source Group.
#
# @author ruki
# @homepage https://github.com/xmake-io/xmake.sh
#
#-----------------------------------------------------------------------------
# some constants
#
xmake_sh_projectdir=$(X= cd -- "$(dirname -- "$0")" && pwd -P)
xmake_sh_buildir="build"
xmake_sh_version="1.0.5"
xmake_sh_verbose=false
xmake_sh_diagnosis=false
xmake_sh_copyright="Copyright (C) 2022-present Ruki Wang, tboox.org, xmake.io."
xmake_sh_makefile="${xmake_sh_projectdir}/makefile"
#-----------------------------------------------------------------------------
# some helper functions
#
raise() {
echo "$@" 1>&2 ; exit 1
}
vprint() {
if "${xmake_sh_verbose}"; then
echo "$@"
fi
}
dprint() {
if "${xmake_sh_diagnosis}"; then
echo "$@"
fi
}
# show and escape string instead of `echo -e`, because sh does not support it
print() {
printf "${@}\n"
}
wprint() {
if "${xmake_sh_verbose}"; then
printf "warning: ${@}\n"
fi
}
# test empty string
test_z() {
if test "x${1}" = "x"; then
return 0
fi
return 1
}
# test non-empty string
test_nz() {
if test "x${1}" != "x"; then
return 0
fi
return 1
}
# test string is equal
test_eq() {
if test "x${1}" = "x${2}"; then
return 0
fi
return 1
}
# test string is not equal
test_nq() {
if test "x${1}" != "x${2}"; then
return 0
fi
return 1
}
string_toupper() {
_ret=$(echo "$1" | tr '[a-z]' '[A-Z]')
}
string_tolower() {
_ret=$(echo "$1" | tr '[A-Z]' '[a-z]')
}
string_replace() {
_ret=$(echo "$1" | sed "s/${2}/${3}/g")
}
# we avoid use `cut` command, because it's slow
string_split() {
local str="${1}"
local sep="${2}"
local idx="${3}"
local oldifs="${IFS}"
IFS="${sep}"
set -- ${str}
if test_nz "${idx}"; then
case "${idx}" in
1) _ret="$1";;
2) _ret="$2";;
3) _ret="$3";;
4) _ret="$4";;
5) _ret="$5";;
6) _ret="$6";;
esac
else
_ret="$1"
_ret2="$2"
_ret3="$3"
_ret4="$4"
_ret5="$5"
_ret6="$6"
fi
IFS="${oldifs}"
}
# does contain sub-string?
# e.g.
# str="src/*.cpp"
# string_contains "$str" "src"
string_contains() {
case "${1}" in
*${2}*) return 0;;
*) return 1;;
esac
return 1
}
# does contain "*"?
string_contains_star() {
case "${1}" in
*\**) return 0;; # bash
*'*'*) return 0;; # csh
*) return 1;;
esac
return 1
}
# does contain "**"?
string_contains_star2() {
case "${1}" in
*\*\**) return 0;; # bash
*'**'*) return 0;; # csh
*) return 1;;
esac
return 1
}
# does startswith sub-string?
# e.g.
# str="src/*.cpp"
# string_startswith "$str" "src"
string_startswith() {
case "${1}" in
${2}*) return 0;;
*) return 1;;
esac
return 1
}
# duplicate characters
# e.g. string_dupch 10 "." => ...........
string_dupch() {
local count=${1}
local ch=${2}
printf %${count}s | tr " " "${ch}"
}
# replace file content
_io_replace_file() {
local infile="${1}"
local outfile="${2}"
local patterns="${3}"
sed "/./ {${patterns}}" "${infile}" > "${outfile}"
}
# try remove file or directory
_os_tryrm() {
if test -f "${1}"; then
rm "${1}"
elif test -d "${1}"; then
rm -r "${1}"
fi
}
# get temporary file
# https://github.com/xmake-io/xmake/issues/5464
_os_tmpfile() {
_ret=$(mktemp "${TMPDIR-/tmp}/tmp.XXXXXXXX")
}
# try run program
_os_runv() {
if ${xmake_sh_diagnosis}; then
${@}
else
${@} >/dev/null 2>&1
fi
local ok=$?
if test "${ok}" -ne "0"; then
return 1
fi
return 0
}
# try run program and get output
_os_iorunv() {
_os_tmpfile
local tmpfile="${_ret}"
${@} >"${tmpfile}" 2>&1
local ok=$?
if test "${ok}" -ne "0"; then
_ret=""
else
local result=$(cat "${tmpfile}")
_ret="${result}"
fi
_os_tryrm "${tmpfile}"
}
# find file in the given directory
# e.g. _os_find . xmake.sh
_os_find() {
local dir="${1}"
local name="${2}"
local depth="${3}"
if test_nz "${depth}"; then
_ret=$(find "${dir}" -maxdepth "${depth}" -mindepth "${depth}" -type f -name "${name}")
else
_ret=$(find "${dir}" -type f -name "${name}")
fi
}
# get date, "%Y%m%d%H%M" -> 202212072222
# Use deterministic timestamp from SOURCE_DATE_EPOCH if available
# https://reproducible-builds.org/docs/source-date-epoch/
_os_date() {
if test_z "${SOURCE_DATE_EPOCH}"; then
_ret=$(date +"${1}")
else
# Use GNU date options first, then fallback to BSD's, and finally fallback to current time.
_ret=$(date -u -d "@$SOURCE_DATE_EPOCH" +"${1}" 2>/dev/null || date -u -r "$SOURCE_DATE_EPOCH" +"${1}" 2>/dev/null || date +"${1}")
fi
}
# we avoid use `basename`, because it's slow
path_filename() {
local path="${1}"
if test_eq "${path}" "/"; then
_ret="/"
else
_ret="${path##*/}"
fi
}
path_extension() {
path_filename "${1}"; local filename="${_ret}"
_ret=".${filename##*.}"
}
path_basename() {
path_filename "${1}"; local filename="${_ret}"
_ret="${filename%.*}"
}
# we avoid use `dirname -- ${1}`, because it's too slow
path_directory() {
local path="${1}"
if test_z "${path}"; then
raise "invalid empty path in path_directory()."
fi
path="${path%/}"
local dir="${path%/*}"
if string_startswith "${path}" "/"; then
if test_z "${dir}"; then
dir="/"
fi
else
dir="${dir#/}"
if test_z "${dir}"; then
dir="."
fi
fi
_ret="${dir}"
}
# e.g. path_filename_fromdir "/tmp/file" "/tmp" -> "file"
path_filename_fromdir() {
_ret="${1#${2}/}"
}
path_is_absolute() {
if string_startswith "${1}" "/"; then
return 0
fi
return 1
}
# get relative path, e.g $(path_relative ${rootdir} ${absolute_path}`
path_relative() {
local source="${1}"
local target="${2}"
if test_z "${source}" || test_z "${target}"; then
raise "invalid empty path in path_relative()"
fi
# patch missing "./"
source=${source#./}
source=${source#.}
target=${target#./}
target=${target#.}
if test_z "${source}"; then
_ret="${target}"
return
fi
# find common path
local result=""
local common_part=$source
while test_eq "${target#$common_part}" "${target}"; do
# no match, means that candidate common part is not correct
# go up one level (reduce common part)
path_directory "${common_part}"; common_part="${_ret}"
# and record that we went back, with correct / handling
if test_z "${result}"; then
result=".."
else
result="../${result}"
fi
done
if test_eq "${common_part}" "/"; then
# special case for root (no common path)
result="${result}/"
fi
# since we now have identified the common part,
# compute the non-common part
local forward_part="${target#$common_part}"
# and now stick all parts together
if test_nz "${result}" && test_nz "${forward_part}"; then
result="${result}${forward_part}"
elif test_nz "${forward_part}"; then
result="${forward_part#*/}"
fi
# same directory?
if test_z "${result}" && test_eq "${source}" "${target}"; then
result="."
fi
_ret="${result}"
}
path_sourcekind() {
local sourcekind=""
case "${1}" in
*.cpp) sourcekind="cxx";;
*.cc) sourcekind="cxx";;
*.c) sourcekind="cc";;
*.ixx) sourcekind="cxx";;
*.mm) sourcekind="mxx";;
*.m) sourcekind="mm";;
*.S) sourcekind="as";;
*.s) sourcekind="as";;
*.asm) sourcekind="as";;
*) raise "unknown sourcekind for ${1}" ;;
esac
_ret="${sourcekind}"
}
path_toolname() {
local toolname=""
case "${1}" in
*-gcc) toolname="gcc";;
*/gcc) toolname="gcc";;
gcc) toolname="gcc";;
gcc-*) toolname="gcc";;
*/gcc-*) toolname="gcc";;
*-g++) toolname="gxx";;
*/g++) toolname="gxx";;
g++) toolname="gxx";;
g++-*) toolname="gxx";;
*/g++-*) toolname="gxx";;
xcrun*clang++) toolname="clangxx";;
xcrun*clang) toolname="clang";;
*-clang++) toolname="clangxx";;
*/clang++) toolname="clangxx";;
clang++) toolname="clangxx";;
clang++-*) toolname="clangxx";;
*/clang++-*) toolname="clangxx";;
*-clang) toolname="clang";;
*/clang) toolname="clang";;
clang) toolname="clang";;
clang-*) toolname="clang";;
*/clang-*) toolname="clang";;
*/emcc) toolname="emcc";;
emcc) toolname="emcc";;
*/em++) toolname="emxx";;
em++) toolname="emxx";;
*/cosmocc) toolname="cosmocc";;
cosmocc) toolname="cosmocc";;
*/cosmoc++) toolname="cosmocxx";;
cosmoc++) toolname="cosmocxx";;
*-ar) toolname="ar";;
*/ar) toolname="ar";;
ar) toolname="ar";;
*/emar) toolname="emar";;
emar) toolname="emar";;
*/cosmoar) toolname="cosmoar";;
cosmoar) toolname="cosmoar";;
cc) toolname="gcc";;
*/cc) toolname="gcc";;
c++) toolname="gxx";;
*/c++) toolname="gxx";;
tcc) toolname="tcc";;
*/tcc) toolname="tcc";;
*) raise "unknown tool ${1}";;
esac
_ret="${toolname}"
}
# get flag name from toolkind, e.g. cc => cflags, cxx => cxxflags
_get_flagname() {
local toolkind="${1}"
local flagname=""
case "${toolkind}" in
cc) flagname="cflags";;
cxx) flagname="cxxflags";;
as) flagname="asflags";;
mm) flagname="mflags";;
mxx) flagname="mxxflags";;
ar) flagname="arflags";;
sh) flagname="shflags";;
ld) flagname="ldflags";;
*) raise "unknown toolkind(${toolkind})!" ;;
esac
_ret="${flagname}"
}
# is enabled? true, yes, y
_is_enabled() {
local value=${1}
if test_eq "${value}" "true"; then
return 0
elif test_eq "${value}" "yes"; then
return 0
elif test_eq "${value}" "y"; then
return 0
fi
return 1
}
# deduplicate string list
# .e.g "hello world hello how are you world" -> hello world how are you
_dedup() {
_ret=$(echo "${1}" | awk '{for (i = 1; i <= NF; ++i) if (!seen[$i]++) printf $i " "}')
}
# deduplicate string list from the reverse order
# .e.g "hello world hello how are you world" -> hello how are you world
_dedup_reverse() {
local result=""
local list=""
local item=""
list=$(echo "${1}" | awk '{for (i = NF; i > 0; --i) if (!seen[$i]++) printf $i " "}')
for item in ${list}; do
result="${item} ${result}"
done
_ret="${result}"
}
#-----------------------------------------------------------------------------
# map functions
#
# define map, @note we can not use bash/declare to define map, because sh does not support it.
#
# _map "options"
# _map_set "options" "key1" "value1"
# _map_set "options" "key2" "value2"
# _map_set "options" "key2" "value3"
# _map_set "options" "key3" "value3"
# _map_set "options" "key4" "__empty__"
# _map_set "options" "key4" "__empty__"
# _map_count "options"; _count="${_ret}"
# _map_keys "options"; _keys="${_ret}"
# echo ${_count}
# for key in ${_keys}; do
# _map_get "options" ${key}; value="{_ret}"
# echo ${key} "->" ${value}
# done
#
# echo "------"
# _map_remove "options" "key3"
# _map_count "options"; _count="${_ret}"
# _map_keys "options"; _keys="${_ret}"
# echo ${_count}
# for key in ${_keys}; do
# _map_get "options" ${key}; value="{_ret}"
# echo ${key} "->" ${value}
# done
#
_map() {
local name=${1}
# eval _map_${name}_count=0
# eval _map_${name}_keys=""
}
# because the shell is slow, we have to temporarily
# disable some of the map features for performance.
#
#_map_count() {
# local name=${1}
# local count=$(eval echo \$_map_${name}_count)
# _ret="${count}"
#}
_map_get() {
local name="${1}"
local key="${2}"
_ret=$(eval echo \$_map_${name}_value_${key})
if test_eq "${_ret}" "__empty__"; then
_ret=""
fi
}
_map_has() {
local name="${1}"
local key="${2}"
local value=""
value=$(eval echo \$_map_${name}_value_${key})
if test_nz "${value}"; then
return 0
fi
return 1
}
_map_set() {
local name="${1}"
local key="${2}"
local value="${3}"
# if ! _map_has ${name} ${key}; then
# _map_count "options"; local count="${_ret}"
# eval _map_${name}_count=$((${count} + 1))
# local keys=$(eval echo \$_map_${name}_keys)
# keys="${keys} ${key}"
# eval _map_${name}_keys=\${keys}
# fi
eval _map_${name}_value_${key}=\${value}
}
#_map_remove() {
# local name="${1}"
# local key="${2}"
# if _map_has ${name} ${key}; then
# _map_count "options"; local count="${_ret}"
# eval _map_${name}_count=$((${count} - 1))
# eval _map_${name}_value_${key}=""
# local keys=$(eval echo \$_map_${name}_keys)
# local keys_new=""
# local k=""
# for k in ${keys}; do
# if test_nq "${k}" "${key}"; then
# keys_new="${keys_new} ${k}"
# fi
# done
# eval _map_${name}_keys=\${keys_new}
# fi
#}
#_map_keys() {
# local name="${1}"
# local keys=$(eval echo \$_map_${name}_keys)
# _ret="${keys}"
#}
#-----------------------------------------------------------------------------
# detect default environments
#
# detect hosts
os_host=`uname`
string_tolower ${os_host}; os_host="${_ret}"
if echo "${os_host}" | grep cygwin >/dev/null 2>&1; then
os_host="cygwin"
fi
if echo "${os_host}" | grep msys >/dev/null 2>&1; then
os_host="msys"
fi
if echo "${os_host}" | grep mingw >/dev/null 2>&1; then
os_host="msys"
fi
if echo "${os_host}" | grep darwin >/dev/null 2>&1; then
os_host="macosx"
fi
if echo "${os_host}" | grep linux >/dev/null 2>&1; then
os_host="linux"
fi
if echo "${os_host}" | grep freebsd >/dev/null 2>&1; then
os_host="freebsd"
fi
if echo "${os_host}" | grep bsd >/dev/null 2>&1; then
os_host="bsd"
fi
if echo "${os_host}" | grep Haiku >/dev/null 2>&1; then
os_host="haiku"
fi
# determining host
# e.g.
# if is_host "linux" "macosx"; then
# ...
# fi
is_host() {
local host=""
for host in $@; do
if test_eq "${os_host}" "${host}"; then
return 0
fi
done
return 1
}
# detect host architecture
os_arch=`uname -m | tr '[A-Z]' '[a-z]'`
if test_eq "${os_arch}" "i686"; then
os_arch="i386"
elif test_eq "${os_arch}" "aarch64" || test_eq "${os_arch}" "arm64"; then
os_arch="arm64"
elif string_contains "${os_arch}" "armv7"; then
os_arch="armv7"
elif string_contains "${os_arch}" "arm"; then
os_arch="arm"
elif string_contains "${os_arch}" "power macintosh"; then
os_arch="ppc"
fi
# set the default target platform
_target_plat_default=${os_host}
if is_host "msys"; then
_target_plat_default="mingw"
elif is_host "freebsd"; then
_target_plat_default="bsd"
elif test_nz "${EMSDK}"; then
_target_plat_default="wasm"
fi
# set the default target architecture
_target_arch_default=${os_arch}
if is_host "msys" && test_nz "${MSYSTEM_CARCH}"; then
_target_arch_default="${MSYSTEM_CARCH}"
elif test_nz "${TERMUX_ARCH}"; then
_target_arch_default="${TERMUX_ARCH}"
elif test_nz "${EMSDK}"; then
_target_arch_default="wasm32"
fi
if test_eq "${_target_arch_default}" "i686"; then
_target_arch_default="i386"
elif test_eq "${_target_arch_default}" "aarch64" || test_eq "${_target_arch_default}" "arm64"; then
_target_arch_default="arm64"
elif string_contains "${_target_arch_default}" "armv7"; then
_target_arch_default="armv7"
elif string_contains "${_target_arch_default}" "arm"; then
_target_arch_default="arm"
fi
# set the default target mode
_target_mode_default="release"
# set the default target kind
_target_kind_default="static"
# set the default project generator and build program
if is_host "freebsd" "bsd"; then
project_generator="gmake"
_make_program_default="gmake"
_ninja_program_default="ninja"
elif is_host "msys" "cygwin"; then
project_generator="gmake"
_make_program_default="make.exe"
_ninja_program_default="ninja.exe"
else
project_generator="gmake"
_make_program_default="make"
_ninja_program_default="ninja"
fi
# set the default directories
if test -d "/usr/local"; then
_install_prefix_default="/usr/local"
elif test -d "/usr"; then
_install_prefix_default="/usr"
fi
_install_bindir_default="\${prefix}/bin"
_install_libdir_default="\${prefix}/lib"
_install_includedir_default="\${prefix}/include"
# determining target platform
# e.g.
# if is_plat "linux" "macosx"; then
# ...
# fi
is_plat() {
local plat=""
for plat in $@; do
if test_eq "${_target_plat}" "${plat}"; then
return 0
fi
done
return 1
}
# determining target architecture
# e.g.
# if is_arch "x86_64" "i386"; then
# ...
# fi
is_arch() {
local arch=""
for arch in $@; do
if test_eq "${_target_arch}" "${arch}"; then
return 0
fi
done
return 1
}
# determining target mode
# e.g.
# if is_mode "release"; then
# ...
# fi
is_mode() {
local mode=""
for mode in $@; do
if test_eq "${_target_mode}" "${mode}"; then
return 0
fi
done
return 1
}
# determining target kind
# e.g.
# if is_kind "release"; then
# ...
# fi
is_kind() {
local kind=""
for kind in $@; do
if test_eq "${_target_kind}" "${kind}"; then
return 0
fi
done
return 1
}
# determining target toolchain
# e.g.
# if is_toolchain "clang"; then
# ...
# fi
is_toolchain() {
local toolchain=""
for toolchain in $@; do
if test_eq "${_target_toolchain}" "${toolchain}"; then
return 0
fi
done
return 1
}
#-----------------------------------------------------------------------------
# project configuration apis
#
# set project name
set_project() {
_xmake_sh_project_name="${1}"
}
# include the given xmake.sh file or directory
# e.g. includes "src" "tests"
includes() {
local path=""
for path in $@; do
if test -f "${path}"; then
path_directory "${path}"; xmake_sh_scriptdir="${_ret}"
. "${path}"
else
local xmake_sh_scriptdir_cur=${xmake_sh_scriptdir}
if test "x${xmake_sh_scriptdir}" != "x"; then
xmake_sh_scriptdir="${xmake_sh_scriptdir_cur}/${path}"
. "${xmake_sh_scriptdir}/xmake.sh"
else
. "${xmake_sh_projectdir}/${path}/xmake.sh"
fi
xmake_sh_scriptdir=${xmake_sh_scriptdir_cur}
fi
done
}
#-----------------------------------------------------------------------------
# some helper functions
#
# split flags
_split_flags() {
string_replace "${1}" ":" " "
}
# get abstract flag for gcc/clang
_get_abstract_flag_for_gcc_clang() {
local toolkind="${1}"
local toolname="${2}"
local itemname="${3}"
local value="${4}"
local flag=""
case "${itemname}" in
defines)
string_replace "${value}" '"' '\\\"'; value="${_ret}"
flag="-D${value}"
;;
undefines) flag="-U${value}";;
includedirs) flag="-I${value}";;
linkdirs) flag="-L${value}";;
links) flag="-l${value}";;
syslinks) flag="-l${value}";;
frameworks) flag="-framework ${value}";;
frameworkdirs) flag="-F${value}";;
rpathdirs)
if is_plat "macosx"; then
string_replace "${value}" "\$ORIGIN" "@loader_path"; value="${_ret}"
flag="-Xlinker -rpath -Xlinker ${value}"
else
# escape $ORIGIN in makefile, TODO we need also handle it for ninja
string_replace "${value}" "@loader_path" '$$ORIGIN'; value="${_ret}"
if is_plat "bsd"; then
flag="-Wl,-zorigin -Wl,-rpath='${value}'"
else
flag="-Wl,-rpath='${value}'"
fi
fi
;;
symbols)
if test_eq "${value}" "debug"; then
flag="-g"
elif test_eq "${value}" "hidden"; then
flag="-fvisibility=hidden"
fi
;;
strip)
if test_eq "${value}" "debug"; then
flag="-Wl,-S"
elif test_eq "${value}" "all"; then
if is_plat "macosx"; then
flag="-Wl,-x -Wl,-dead_strip"
else
flag="-s"
fi
fi
;;
warnings)
if test_eq "${value}" "all" || test_eq "${value}" "more" || test_eq "${value}" "less"; then
flag="-Wall"
elif test_eq "${value}" "allextra"; then
flag="-Wall -Wextra"
elif test_eq "${value}" "error"; then
flag="-Werror"
elif test_eq "${value}" "everything"; then
flag="-Wall -Wextra"
elif test_eq "${value}" "none"; then
flag="-w"
fi
;;
optimizes)
if test_eq "${value}" "fast"; then
flag="-O1"
elif test_eq "${value}" "faster"; then
flag="-O2"
elif test_eq "${value}" "fastest"; then
flag="-O3"
elif test_eq "${value}" "smallest"; then
if test_eq "${toolname}" "clang" || test_eq "${toolname}" "clangxx"; then
flag="-Oz"
else
flag="-Os"
fi
elif test_eq "${value}" "aggressive"; then
flag="-Ofast"
elif test_eq "${value}" "none"; then
flag="-O0"
fi
;;
languages)
if test_eq "${toolkind}" "cc" || test_eq "${toolkind}" "mm"; then
case "${value}" in
ansi) flag="-ansi";;
c89) flag="-std=c89";;
gnu89) flag="-std=gnu89";;
c99) flag="-std=c99";;
gnu99) flag="-std=gnu99";;
c11) flag="-std=c11";;
gnu11) flag="-std=gnu11";;
c17) flag="-std=c17";;
gnu17) flag="-std=gnu17";;
esac
elif test_eq "${toolkind}" "cxx" || test_eq "${toolkind}" "mxx"; then
case "${value}" in
cxx98) flag="-std=c++98";;
c++98) flag="-std=c++98";;
gnuxx98) flag="-std=gnu++98";;
gnu++98) flag="-std=gnu++98";;
cxx11) flag="-std=c++11";;
c++11) flag="-std=c++11";;
gnuxx11) flag="-std=gnu++11";;
gnu++11) flag="-std=gnu++11";;
cxx14) flag="-std=c++14";;
c++14) flag="-std=c++14";;
gnuxx14) flag="-std=gnu++14";;
gnu++14) flag="-std=gnu++14";;
cxx17) flag="-std=c++17";;
c++17) flag="-std=c++17";;
gnuxx17) flag="-std=gnu++17";;
gnu++17) flag="-std=gnu++17";;
cxx1z) flag="-std=c++1z";;
c++1z) flag="-std=c++1z";;
gnuxx1z) flag="-std=gnu++1z";;
gnu++1z) flag="-std=gnu++1z";;
cxx2a) flag="-std=c++2a";;
c++2a) flag="-std=c++2a";;
gnuxx2a) flag="-std=gnu++2a";;
gnu++2a) flag="-std=gnu++2a";;
cxx20) flag="-std=c++20";;
c++20) flag="-std=c++20";;
gnuxx20) flag="-std=gnu++20";;
gnu++20) flag="-std=gnu++20";;
cxx*) raise "unknown language value(${value})!" ;;
c++*) raise "unknown language value(${value})!" ;;
esac
fi
;;
*) raise "unknown itemname(${itemname})!" ;;
esac
_ret="${flag}"
}
# get abstract flags
_get_abstract_flags() {
local toolkind="${1}"
local toolname="${2}"
local itemname="${3}"
local values="${4}"
local flags=""
local value=""
for value in ${values}; do
local flag=""
case "${toolname}" in
gcc) _get_abstract_flag_for_gcc_clang "${toolkind}" "${toolname}" "${itemname}" "${value}"; flag="${_ret}";;
gxx) _get_abstract_flag_for_gcc_clang "${toolkind}" "${toolname}" "${itemname}" "${value}"; flag="${_ret}";;
clang) _get_abstract_flag_for_gcc_clang "${toolkind}" "${toolname}" "${itemname}" "${value}"; flag="${_ret}";;
clangxx) _get_abstract_flag_for_gcc_clang "${toolkind}" "${toolname}" "${itemname}" "${value}"; flag="${_ret}";;
emcc) _get_abstract_flag_for_gcc_clang "${toolkind}" "${toolname}" "${itemname}" "${value}"; flag="${_ret}";;
emxx) _get_abstract_flag_for_gcc_clang "${toolkind}" "${toolname}" "${itemname}" "${value}"; flag="${_ret}";;
cosmocc) _get_abstract_flag_for_gcc_clang "${toolkind}" "${toolname}" "${itemname}" "${value}"; flag="${_ret}";;
cosmocxx) _get_abstract_flag_for_gcc_clang "${toolkind}" "${toolname}" "${itemname}" "${value}"; flag="${_ret}";;
tcc) _get_abstract_flag_for_gcc_clang "${toolkind}" "${toolname}" "${itemname}" "${value}"; flag="${_ret}";;
*) raise "unknown toolname(${toolname})!" ;;
esac
if test_nz "${flag}"; then
flags="${flags} ${flag}"
fi
done
_ret="${flags}"