: make abstract machine executor with state
_command_=mamexec
case `(getopts '[-][123:xyz]' opt --xyz; echo 0$opt) 2>/dev/null` in
0123) ARGV0="-a $_command_"
USAGE=$'
[-?
@(#)$Id: mamexec (AT&T Labs Research) 1994-04-17 $
]
'$USAGE_LICENSE$'
[+NAME?mamexec - make abstract machine executor]
[+DESCRIPTION?\bmamexec\b reads MAM (Make Abstract Machine) target and
prerequisite file descriptions from the standard input and executes
actions to update targets that are older than their prerequisites.
Mamfiles are generated by the \b--mam\b option of \bnmake\b(1) and
\bgmake\b(1) and are portable to environments that only have
\bsh\b(1) and \bcc\b(1).]
[+?A separate \bmamstate\b(1) program is used to compare current and state
file target times. \bmamexec\b is a \bksh\b(1) script implementation
that has been replaced by the standalone \bmamake\b(1). New
applications should use \bmamake\b.]
[d:debug?Set the debug trace level to \alevel\a. Higher levels produce
more output.]
[f:force?Force all targets to be out of date.]
[i:ignore?Ignore shell action errors.]
[n!:exec?Enable shell action execution.]
[s:silent?Do not trace shell actions as they are executed.]
[ target ... ]
[+SEE ALSO?\bmamake\b(1), \bmamstate\b(1), \bnmake\b(1)]
'
;;
*) ARGV0=""
USAGE="dfins"
;;
esac
usage()
{
OPTIND=0
getopts $ARGV0 "$USAGE" OPT '-?'
exit 2
}
_debug_=:
_diff_=.
_error_='exit 1'
_exec_=eval
_force_=
_list_=
_same_=.
_set_=
_silent_=
_state_list_=MAMlist
_state_time_=MAMtime
_tmp_=/tmp/mam.$$.mam
trap 'rm -f $_tmp_' 0
trap 'exit 2' 1 2
while getopts $ARGV0 "$USAGE" OPT
do case $OPT in
d) _debug_=$OPT ;;
f) _force_=1 ;;
i) _error_=: ;;
n) _exec_=echo ;;
s) _silent_=1 ;;
*) usage ;;
esac
done
_select_=
while :
do case $# in
0) break ;;
esac
case $1 in
*=*) eval $1
;;
*) case $_select_ in
"") _select_=$1 ;;
*) _select_="$_select_|$1" ;;
esac
;;
esac
shift
done
case $_select_ in
"") _select_="*" ;;
esac
(set -e; false || true) && _set_=e || echo $_command_: command errors ignored because of shell botch >&2
case $_silent_ in
"") _set_=x$_set_
;;
*) case $_exec_ in
"echo") _exec_=: ;;
esac
;;
esac
case $_exec_ in
"eval") _begin_="("
_end_=") </dev/null"
case $_set_ in
?*) _set_="set -$_set_;" ;;
esac
;;
*) _set_=
;;
esac
if test -f $_state_list_ -a -f $_state_time_
then mamstate $_state_list_ < $_state_list_ | sort > $_tmp_
for _i_ in `comm -12 $_state_time_ $_tmp_ | sed 's/ .*//'`
do case $_same_ in
.) _same_=$_i_ ;;
*) _same_="$_same_|$_i_" ;;
esac
done
fi
_index_=_
_match_=
case `(echo ok | (read -r a; echo $a) 2>/dev/null)` in
ok) _read_='read -r'
;;
*)
_read_=read
sed 's/\\/\\\\/g' > $_tmp_
exec < $_tmp_
rm -f $_tmp_
;;
esac
_old_=1
_ifs_=$IFS
while IFS=' '; $_read_ _op_ _arg_ _val_
do IFS=$_ifs_
case $_op_ in
"note") continue
;;
"info") case $_arg_ in
"mam") _old_= ;;
esac
continue
;;
"setv") eval _data_='$'$_arg_
case $_index_:$_data_ in
__*:*|*:)
case $_exec_ in
"eval") ;;
*) echo "$_arg_=$_val_" ;;
esac
eval $_arg_="$_val_" "</dev/null"
;;
esac
case $_arg_:$mam_cc_L in
"CC:") (
set -
mkdir /tmp/mam$$
cd /tmp/mam$$
echo 'main(){return 0;}' > main.c
code=1
if $CC -c main.c 2>/dev/null
then if $CC -L. main.o -lc 2>/dev/null
then $CC -L. main.o -lc > libc.a 2>/dev/null || code=0
fi
fi
cd /tmp
rm -rf /tmp/mam$$
exit $code
) </dev/null && mam_cc_L=' '
;;
esac
continue
;;
"make") eval _name_$_index_=$_name_
eval _prev_$_index_=$_prev_
eval _cmds_$_index_='"$_cmds_"'
eval _attr_$_index_=$_attr_
eval _name_=$_arg_
_prev_=$_index_
case " $_val_ " in
*" metarule "*) _attr_=m$_attr_ ;;
esac
_cmds_=
eval " case \"$_name_\" in
$_select_)
case \"$_select_\" in
\"*\") _select_=$_name_ ;;
esac
_match_=1
_attr_=x$_attr_
;;
esac"
case $_force_ in
"") eval " case \"$_name_\" in
$_diff_)_attr_=u$_attr_ ;;
$_same_);;
*) _attr_=u$_attr_ ;;
esac"
;;
*) _attr_=u$_attr_
;;
esac
case $_attr_ in
*u*) case $_diff_ in
.) _diff_=$_name_ ;;
*) _diff_="$_diff_|$_name_" ;;
esac
;;
esac
_index_=_$_index_
eval _name_$_index_=$_name_
eval _prev_$_index_=$_prev_
eval _cmds_$_index_=$_cmds_
eval _attr_$_index_=$_attr_
eval _list_='"'"$_list_"'
'$_name_'"'
continue
;;
"prev") case $_force_ in
"") eval " case \"$_arg_\" in
$_diff_)_attr_=u$_attr_ ;;
$_same_) ;;
*) _attr_=u$_attr_ ;;
esac"
;;
*) _attr_=u$_attr_
;;
esac
continue
;;
esac
case $_index_ in
_) echo $_op_: missing make op >&2; continue ;;
esac
case $_op_ in
"attr") case $_val_ in
"meta"|"suff") _attr_=m$_attr_ ;;
esac
;;
"exec"|"....")
case $_old_ in
"") _arg_=$_val_
;;
*) case $_val_ in
?*) _arg_="$_arg_ $_val_" ;;
esac
;;
esac
case $_cmds_ in
"") _cmds_=$_arg_
;;
*) _cmds_="$_cmds_
$_arg_"
;;
esac
;;
"done") eval _arg_=$_arg_
_prop_=
case $_arg_ in
$_name_)case $_attr_ in
*m*) ;;
*x*u*|*u*x*)
case $_cmds_ in
"") case $_attr_ in
*u*) _prop_=u ;;
esac
;;
*) $_exec_ "$_begin_$_set_$_cmds_$_end_" ||
{
_code_=$?
case $_set_ in
*-*e*) ;;
*) case $_cmds_ in
*if*then*fi*|"||") _code_=0 ;;
esac
;;
esac
case $_code_ in
0) ;;
*) echo "*** exit code $_code_ making $_name_" >&2
$_error_
;;
esac
}
_prop_=u
;;
esac
;;
esac
_index_=$_prev_
eval _name_='$'_name_$_index_
eval _prev_='$'_prev_$_index_
eval _cmds_='$'_cmds_$_index_
eval _attr_=$_prop_'$'_attr_$_index_
;;
*) echo $_val_: $_op_ $_name_ expected >&2
;;
esac
;;
esac
done
IFS=$_ifs_
case $_match_ in
"") echo "$_command_: don't know how to make $_select_" >&2; $_error_ ;;
esac
case $_exec_ in
"eval") echo "$_list_" > $_state_list_
mamstate $_state_list_ < $_state_list_ | sort > $_state_time_
;;
esac
