mirror of
git://git.sv.gnu.org/autoconf
synced 2024-11-27 01:49:56 +08:00
Rewrite config files generation: avoid quadratic growth in
the number of substituted variables by using awk instead of sed for the bulk of the substitutions. * NEWS: Mention this. * doc/autoconf.texi (Setting Output Variables): `|#_!!_#|' is also forbidden in the output (and thus input) file. * lib/autoconf/status.m4 (_AC_AWK_LITERAL_LIMIT): New macro. (_AC_OUTPUT_FILES_PREPARE): Instead of several sed scripts, generate just one large awk script for substitutions, eliminating much of the earlier complexity, while adding some new complexity. Only expand the substitution templates at configure time, for smaller configure script size. If _AC_SUBST_FILES are used, test 'awk' for working getline support at config.status time. If absent, interpolate through the shell. The awk script was written with much help from Paolo Bonzini and Paul Eggert. (_AC_SED_CMD_NUM, _AC_SED_DELIM_NUM, _AC_SED_FRAG): Removed. (_AC_SED_FRAG_NUM): Likewise. (_AC_SUBST_CMDS): Renamed from... (_AC_SED_CMDS): ...this. (_AC_OUTPUT_FILE): Use _AC_SUBST_CMDS. * tests/torture.at (Substitute a 2000-byte string): Also substitute a line with 1000 words, and a variable with several long lines. (Substitute and define special characters): Test awk special characters, and put substitution input strings `@foo@' in the output, to test that no recursion happens; test several other combinations from Paolo Bonzini.
This commit is contained in:
Paul Eggert
parent
ab54e97802
commit
6d759252cd
31
ChangeLog
31
ChangeLog
@ -1,3 +1,34 @@
|
||||
2006-11-26 Ralf Wildenhues <Ralf.Wildenhues@gmx.de>
|
||||
|
||||
Rewrite config files generation: avoid quadratic growth in
|
||||
the number of substituted variables by using awk instead of sed
|
||||
for the bulk of the substitutions.
|
||||
* NEWS: Mention this.
|
||||
* doc/autoconf.texi (Setting Output Variables): `|#_!!_#|' is also
|
||||
forbidden in the output (and thus input) file.
|
||||
* lib/autoconf/status.m4 (_AC_AWK_LITERAL_LIMIT): New macro.
|
||||
(_AC_OUTPUT_FILES_PREPARE): Instead of several sed scripts,
|
||||
generate just one large awk script for substitutions,
|
||||
eliminating much of the earlier complexity, while adding some
|
||||
new complexity. Only expand the substitution templates at
|
||||
configure time, for smaller configure script size. If
|
||||
_AC_SUBST_FILES are used, test 'awk' for working getline support
|
||||
at config.status time. If absent, interpolate through the
|
||||
shell. The awk script was written with much help
|
||||
from Paolo Bonzini and Paul Eggert.
|
||||
(_AC_SED_CMD_NUM, _AC_SED_DELIM_NUM, _AC_SED_FRAG): Removed.
|
||||
(_AC_SED_FRAG_NUM): Likewise.
|
||||
(_AC_SUBST_CMDS): Renamed from...
|
||||
(_AC_SED_CMDS): ...this.
|
||||
(_AC_OUTPUT_FILE): Use _AC_SUBST_CMDS.
|
||||
* tests/torture.at (Substitute a 2000-byte string): Also
|
||||
substitute a line with 1000 words, and a variable with several
|
||||
long lines.
|
||||
(Substitute and define special characters): Test awk special
|
||||
characters, and put substitution input strings `@foo@' in the
|
||||
output, to test that no recursion happens; test several other
|
||||
combinations from Paolo Bonzini.
|
||||
|
||||
2006-11-25 Paul Eggert <eggert@cs.ucla.edu>
|
||||
|
||||
* lib/autotest/general.m4 (AT_INIT): Undo recent changes
|
||||
|
||||
2
NEWS
2
NEWS
@ -1,5 +1,7 @@
|
||||
* Major changes in Autoconf 2.61a (??)
|
||||
|
||||
** config.status now uses awk instead of sed for most substitutions, for speed.
|
||||
|
||||
* Major changes in Autoconf 2.61 (2006-11-17)
|
||||
|
||||
** New macros AC_C_FLEXIBLE_ARRAY_MEMBER, AC_C_VARARRAYS.
|
||||
|
||||
@ -8352,8 +8352,8 @@ is called. The value can contain newlines.
|
||||
The substituted value is not rescanned for more output variables;
|
||||
occurrences of @samp{@@@var{variable}@@} in the value are inserted
|
||||
literally into the output file. (The algorithm uses the special marker
|
||||
@code{|#_!!_#|} internally, so the substituted value cannot contain
|
||||
@code{|#_!!_#|}.)
|
||||
@code{|#_!!_#|} internally, so neither the substituted value nor the
|
||||
output file may contain @code{|#_!!_#|}.)
|
||||
|
||||
If @var{value} is given, in addition assign it to @var{variable}.
|
||||
|
||||
|
||||
@ -311,6 +311,16 @@ dnl One cannot portably go further than 99 commands because of HP-UX.
|
||||
[99])
|
||||
|
||||
|
||||
# _AC_AWK_LITERAL_LIMIT
|
||||
# ---------------------
|
||||
# Evaluate the maximum number of characters to put in an awk
|
||||
# string literal, not counting escape characters.
|
||||
#
|
||||
# Some awk's have small limits, such as Solaris and AIX awk.
|
||||
m4_define([_AC_AWK_LITERAL_LIMIT],
|
||||
[148])
|
||||
|
||||
|
||||
# _AC_OUTPUT_FILES_PREPARE
|
||||
# ------------------------
|
||||
# Create the sed scripts needed for CONFIG_FILES.
|
||||
@ -319,90 +329,80 @@ dnl One cannot portably go further than 99 commands because of HP-UX.
|
||||
# The intention is to have readable config.status and configure, even
|
||||
# though this m4 code might be scaring.
|
||||
#
|
||||
# This code was written by Dan Manthey.
|
||||
# This code was written by Dan Manthey and rewritten by Ralf Wildenhues.
|
||||
#
|
||||
# This macro is expanded inside a here document. If the here document is
|
||||
# closed, it has to be reopened with "cat >>$CONFIG_STATUS <<\_ACEOF".
|
||||
#
|
||||
m4_define([_AC_OUTPUT_FILES_PREPARE],
|
||||
[#
|
||||
# Set up the sed scripts for CONFIG_FILES section.
|
||||
#
|
||||
dnl ... and define _AC_SED_CMDS, the pipeline which executes them.
|
||||
m4_define([_AC_SED_CMDS], [])dnl
|
||||
|
||||
# No need to generate the scripts if there are no CONFIG_FILES.
|
||||
# This happens for instance when ./config.status config.h
|
||||
[# Set up the scripts for CONFIG_FILES section.
|
||||
# No need to generate them if there are no CONFIG_FILES.
|
||||
# This happens for instance with `./config.status config.h'.
|
||||
if test -n "$CONFIG_FILES"; then
|
||||
|
||||
_ACEOF
|
||||
|
||||
m4_pushdef([_AC_SED_FRAG_NUM], 0)dnl Fragment number.
|
||||
m4_pushdef([_AC_SED_CMD_NUM], 2)dnl Num of commands in current frag so far.
|
||||
m4_pushdef([_AC_SED_DELIM_NUM], 0)dnl Expected number of delimiters in file.
|
||||
m4_pushdef([_AC_SED_FRAG], [])dnl The constant part of the current fragment.
|
||||
dnl
|
||||
dnl For AC_SUBST_FILE, check for usable getline support in awk,
|
||||
dnl at config.status execution time.
|
||||
dnl Otherwise, do the interpolation in sh, which is slower.
|
||||
dnl Without any AC_SUBST_FILE, omit all related code.
|
||||
dnl Note the expansion is double-quoted for readability.
|
||||
m4_ifdef([_AC_SUBST_FILES],
|
||||
[# Create sed commands to just substitute file output variables.
|
||||
|
||||
m4_foreach_w([_AC_Var], m4_defn([_AC_SUBST_FILES]),
|
||||
[dnl End fragments at beginning of loop so that last fragment is not ended.
|
||||
m4_if(m4_eval(_AC_SED_CMD_NUM + 3 > _AC_SED_CMD_LIMIT), 1,
|
||||
[dnl Fragment is full and not the last one, so no need for the final un-escape.
|
||||
dnl Increment fragment number.
|
||||
m4_define([_AC_SED_FRAG_NUM], m4_incr(_AC_SED_FRAG_NUM))dnl
|
||||
dnl Record that this fragment will need to be used.
|
||||
m4_define([_AC_SED_CMDS],
|
||||
m4_defn([_AC_SED_CMDS])[| sed -f "$tmp/subs-]_AC_SED_FRAG_NUM[.sed" ])dnl
|
||||
[cat >>$CONFIG_STATUS <<_ACEOF
|
||||
cat >"\$tmp/subs-]_AC_SED_FRAG_NUM[.sed" <<\CEOF
|
||||
/@[a-zA-Z_][a-zA-Z_0-9]*@/!b
|
||||
]m4_defn([_AC_SED_FRAG])dnl
|
||||
[CEOF
|
||||
|
||||
_ACEOF
|
||||
]m4_define([_AC_SED_CMD_NUM], 2)m4_define([_AC_SED_FRAG])dnl
|
||||
])dnl Last fragment ended.
|
||||
m4_define([_AC_SED_CMD_NUM], m4_eval(_AC_SED_CMD_NUM + 3))dnl
|
||||
m4_define([_AC_SED_FRAG],
|
||||
m4_defn([_AC_SED_FRAG])dnl
|
||||
[/^[ ]*@]_AC_Var[@[ ]*$/{
|
||||
r $]_AC_Var[
|
||||
d
|
||||
}
|
||||
])dnl
|
||||
])dnl
|
||||
# Remaining file output variables are in a fragment that also has non-file
|
||||
# output varibles.
|
||||
|
||||
])
|
||||
[[if awk 'BEGIN { getline <"/dev/null" }' </dev/null 2>/dev/null; then
|
||||
ac_cs_awk_getline=:
|
||||
ac_cs_awk_pipe_init=
|
||||
ac_cs_awk_read_file='
|
||||
while ((getline aline < (F[key])) > 0)
|
||||
print(aline)
|
||||
close(F[key])'
|
||||
ac_cs_awk_pipe_fini=
|
||||
else
|
||||
ac_cs_awk_getline=false
|
||||
ac_cs_awk_pipe_init="print \"cat <<'|#_!!_#|'\""
|
||||
ac_cs_awk_read_file='
|
||||
print "|#_!!_#|"
|
||||
print "cat " F[key]
|
||||
'$ac_cs_awk_pipe_init
|
||||
ac_cs_awk_pipe_fini='END { print "|#_!!_#|" }'
|
||||
fi]])dnl
|
||||
dnl
|
||||
m4_define([_AC_SED_FRAG], [
|
||||
]m4_defn([_AC_SED_FRAG]))dnl
|
||||
m4_foreach_w([_AC_Var],
|
||||
m4_ifdef([_AC_SUBST_VARS], [m4_defn([_AC_SUBST_VARS]) ])[@END@],
|
||||
[m4_if(_AC_SED_DELIM_NUM, 0,
|
||||
[m4_if(_AC_Var, [@END@],
|
||||
[dnl The whole of the last fragment would be the final deletion of `|#_!!_#|'.
|
||||
m4_define([_AC_SED_CMDS], m4_defn([_AC_SED_CMDS])[| sed 's/|#_!!_#|//g' ])],
|
||||
[
|
||||
dnl Define the pipe that does the substitution.
|
||||
m4_ifdef([_AC_SUBST_FILES],
|
||||
[m4_define([_AC_SUBST_CMDS], [|
|
||||
if $ac_cs_awk_getline; then
|
||||
awk -f "$tmp/subs.awk"
|
||||
else
|
||||
awk -f "$tmp/subs.awk" | $SHELL
|
||||
fi])],
|
||||
[m4_define([_AC_SUBST_CMDS],
|
||||
[| awk -f "$tmp/subs.awk"])])dnl
|
||||
|
||||
echo 'BEGIN {' >"$tmp/subs.awk"
|
||||
_ACEOF
|
||||
|
||||
m4_ifdef([_AC_SUBST_FILES],
|
||||
[# Create commands to substitute file output variables.
|
||||
{
|
||||
echo "cat >>$CONFIG_STATUS <<_ACEOF"
|
||||
echo 'cat >>"\$tmp/subs.awk" <<\CEOF'
|
||||
echo "$ac_subst_files" | sed 's/.*/F@<:@"&"@:>@="$&"/'
|
||||
echo "CEOF"
|
||||
echo "_ACEOF"
|
||||
} >conf$$files.sh
|
||||
. ./conf$$files.sh
|
||||
rm -f conf$$files.sh
|
||||
])dnl
|
||||
|
||||
{
|
||||
echo "cat >conf$$subs.awk <<_ACEOF"
|
||||
echo "$ac_subst_vars" | sed 's/.*/&!$&$ac_delim/'
|
||||
echo "_ACEOF"
|
||||
} >conf$$subs.sh
|
||||
ac_delim_num=`echo "$ac_subst_vars" | grep -c '$'`
|
||||
ac_delim='%!_!# '
|
||||
for ac_last_try in false false false false false :; do
|
||||
cat >conf$$subs.sed <<_ACEOF
|
||||
])])dnl
|
||||
m4_if(_AC_Var, [@END@],
|
||||
[m4_if(m4_eval(_AC_SED_CMD_NUM + 2 <= _AC_SED_CMD_LIMIT), 1,
|
||||
[m4_define([_AC_SED_FRAG], [ end]m4_defn([_AC_SED_FRAG]))])],
|
||||
[m4_define([_AC_SED_CMD_NUM], m4_incr(_AC_SED_CMD_NUM))dnl
|
||||
m4_define([_AC_SED_DELIM_NUM], m4_incr(_AC_SED_DELIM_NUM))dnl
|
||||
_AC_Var!$_AC_Var$ac_delim
|
||||
])dnl
|
||||
m4_if(_AC_SED_CMD_LIMIT,
|
||||
m4_if(_AC_Var, [@END@], m4_if(_AC_SED_CMD_NUM, 2, 2, _AC_SED_CMD_LIMIT), _AC_SED_CMD_NUM),
|
||||
[_ACEOF
|
||||
. ./conf$$subs.sh
|
||||
|
||||
dnl Do not use grep on conf$$subs.sed, since AIX grep has a line length limit.
|
||||
if test `sed -n "s/.*$ac_delim\$/X/p" conf$$subs.sed | grep -c X` = _AC_SED_DELIM_NUM; then
|
||||
dnl Do not use grep on conf$$subs.awk, since AIX grep has a line length limit.
|
||||
if test `sed -n "s/.*$ac_delim\$/X/p" conf$$subs.awk | grep -c X` = $ac_delim_num; then
|
||||
break
|
||||
elif $ac_last_try; then
|
||||
AC_MSG_ERROR([could not make $CONFIG_STATUS])
|
||||
@ -410,51 +410,104 @@ dnl Do not use grep on conf$$subs.sed, since AIX grep has a line length limit.
|
||||
ac_delim="$ac_delim!$ac_delim _$ac_delim!! "
|
||||
fi
|
||||
done
|
||||
rm -f conf$$subs.sh
|
||||
|
||||
dnl Similarly, avoid grep here too.
|
||||
ac_eof=`sed -n '/^CEOF[[0-9]]*$/s/CEOF/0/p' conf$$subs.sed`
|
||||
ac_eof=`sed -n '/^CEOF[[0-9]]*$/s/CEOF/0/p' conf$$subs.awk`
|
||||
if test -n "$ac_eof"; then
|
||||
ac_eof=`echo "$ac_eof" | sort -nru | sed 1q`
|
||||
ac_eof=`expr $ac_eof + 1`
|
||||
fi
|
||||
|
||||
dnl Increment fragment number.
|
||||
m4_define([_AC_SED_FRAG_NUM], m4_incr(_AC_SED_FRAG_NUM))dnl
|
||||
dnl Record that this fragment will need to be used.
|
||||
m4_define([_AC_SED_CMDS],
|
||||
m4_defn([_AC_SED_CMDS])[| sed -f "$tmp/subs-]_AC_SED_FRAG_NUM[.sed" ])dnl
|
||||
[cat >>$CONFIG_STATUS <<_ACEOF
|
||||
cat >"\$tmp/subs-]_AC_SED_FRAG_NUM[.sed" <<\CEOF$ac_eof
|
||||
/@[a-zA-Z_][a-zA-Z_0-9]*@/!b]m4_defn([_AC_SED_FRAG])dnl
|
||||
[_ACEOF
|
||||
sed '
|
||||
s/[,\\&]/\\&/g; s/@/@|#_!!_#|/g
|
||||
s/^/s,@/; s/!/@,|#_!!_#|/
|
||||
:n
|
||||
t n
|
||||
s/'"$ac_delim"'$/,g/; t
|
||||
s/$/\\/; p
|
||||
N; s/^.*\n//; s/[,\\&]/\\&/g; s/@/@|#_!!_#|/g; b n
|
||||
' >>$CONFIG_STATUS <conf$$subs.sed
|
||||
rm -f conf$$subs.sed
|
||||
cat >>$CONFIG_STATUS <<_ACEOF
|
||||
]m4_if(_AC_Var, [@END@],
|
||||
[m4_if(m4_eval(_AC_SED_CMD_NUM + 2 > _AC_SED_CMD_LIMIT), 1,
|
||||
[m4_define([_AC_SED_CMDS], m4_defn([_AC_SED_CMDS])[| sed 's/|#_!!_#|//g' ])],
|
||||
[[:end
|
||||
s/|#_!!_#|//g
|
||||
]])])dnl
|
||||
CEOF$ac_eof
|
||||
_ACEOF
|
||||
m4_define([_AC_SED_FRAG], [
|
||||
])m4_define([_AC_SED_DELIM_NUM], 0)m4_define([_AC_SED_CMD_NUM], 2)dnl
|
||||
|
||||
])])dnl
|
||||
dnl Initialize an awk array of substitutions, keyed by variable name.
|
||||
dnl
|
||||
m4_popdef([_AC_SED_FRAG_NUM])dnl
|
||||
m4_popdef([_AC_SED_CMD_NUM])dnl
|
||||
m4_popdef([_AC_SED_DELIM_NUM])dnl
|
||||
m4_popdef([_AC_SED_FRAG])dnl
|
||||
dnl First read a whole (potentially multi-line) substitution,
|
||||
dnl and construct `S["VAR"]='. Then, split it into pieces that fit
|
||||
dnl in an awk literal. Each piece then gets active characters escaped
|
||||
dnl (if we escape earlier we risk splitting inside an escape sequence).
|
||||
dnl Output as separate string literals, joined with backslash-newline.
|
||||
dnl Eliminate the newline after `=' in a second script, for readability.
|
||||
dnl
|
||||
dnl Notes to the main part of the awk script:
|
||||
dnl - the unusual FS value helps prevent running into the limit of 99 fields,
|
||||
dnl - we avoid sub/gsub because of the \& quoting issues, see
|
||||
dnl http://www.gnu.org/software/gawk/manual/html_node/Gory-Details.html
|
||||
dnl - Writing `$ 0' prevents expansion by both the shell and m4 here.
|
||||
dnl
|
||||
dnl m4-double-quote most of the scripting for readability.
|
||||
[cat >>$CONFIG_STATUS <<_ACEOF
|
||||
cat >>"\$tmp/subs.awk" <<\CEOF$ac_eof
|
||||
_ACEOF
|
||||
sed '
|
||||
t line
|
||||
:line
|
||||
s/'"$ac_delim"'$//; t gotline
|
||||
N; b line
|
||||
:gotline
|
||||
h
|
||||
s/^/S["/; s/!.*/"]=/; p
|
||||
g
|
||||
s/^.*!//
|
||||
:more
|
||||
t more
|
||||
h
|
||||
s/\(.\{]_AC_AWK_LITERAL_LIMIT[\}\).*/\1/
|
||||
t notlast
|
||||
s/["\\]/\\&/g; s/\n/\\n/g
|
||||
s/^/"/; s/$/"/
|
||||
b
|
||||
:notlast
|
||||
s/["\\]/\\&/g; s/\n/\\n/g
|
||||
s/^/"/; s/$/"\\/
|
||||
p
|
||||
g
|
||||
s/.\{]_AC_AWK_LITERAL_LIMIT[\}//
|
||||
b more
|
||||
' <conf$$subs.awk | sed '
|
||||
/^[^"]/{
|
||||
N
|
||||
s/\n//
|
||||
}
|
||||
' >>$CONFIG_STATUS
|
||||
rm -f conf$$subs.awk
|
||||
cat >>$CONFIG_STATUS <<_ACEOF
|
||||
CEOF$ac_eof
|
||||
cat >>"\$tmp/subs.awk" <<CEOF
|
||||
for (key in S) S_is_set[key] = 1
|
||||
FS = ""
|
||||
]m4_ifdef([_AC_SUBST_FILES],
|
||||
[ \$ac_cs_awk_pipe_init])[
|
||||
}
|
||||
{
|
||||
line = $ 0
|
||||
nfields = split(line, field, "@")
|
||||
substed = 0
|
||||
len = length(field[1])
|
||||
for (i = 2; i < nfields; i++) {
|
||||
key = field[i]
|
||||
keylen = length(key)
|
||||
if (S_is_set[key]) {
|
||||
value = S[key]
|
||||
line = substr(line, 1, len) "" value "" substr(line, len + keylen + 3)
|
||||
len += length(value) + length(field[++i])
|
||||
substed = 1
|
||||
} else
|
||||
len += 1 + keylen
|
||||
}
|
||||
]m4_ifdef([_AC_SUBST_FILES],
|
||||
[[ if (nfields == 3 && !substed) {
|
||||
key = field[2]
|
||||
if (F[key] != "" && line ~ /^[ ]*@.*@[ ]*$/) {
|
||||
\$ac_cs_awk_read_file
|
||||
next
|
||||
}
|
||||
}]])[
|
||||
print line
|
||||
}
|
||||
]m4_ifdef([_AC_SUBST_FILES],
|
||||
[\$ac_cs_awk_pipe_fini])[
|
||||
CEOF
|
||||
_ACEOF
|
||||
]dnl end of double-quoted part
|
||||
|
||||
# VPATH may cause trouble with some makes, so we remove $(srcdir),
|
||||
# ${srcdir} and @srcdir@ from VPATH if srcdir is ".", strip leading and
|
||||
@ -554,7 +607,7 @@ m4_foreach([_AC_Var], [srcdir, abs_srcdir, top_srcdir, abs_top_srcdir,
|
||||
])dnl
|
||||
m4_ifndef([AC_DATAROOTDIR_CHECKED], [$ac_datarootdir_hack
|
||||
])dnl
|
||||
" $ac_file_inputs m4_defn([_AC_SED_CMDS])>$tmp/out
|
||||
" $ac_file_inputs m4_defn([_AC_SUBST_CMDS]) >$tmp/out
|
||||
|
||||
m4_ifndef([AC_DATAROOTDIR_CHECKED],
|
||||
[test -z "$ac_datarootdir_hack$ac_datarootdir_seen" &&
|
||||
|
||||
@ -539,18 +539,26 @@ AT_CLEANUP
|
||||
# Solaris 9 /usr/ucb/sed that rejects commands longer than 4000 bytes. HP/UX
|
||||
# sed dumps core around 8 KiB. However, POSIX says that sed need not
|
||||
# handle lines longer than 2048 bytes (including the trailing newline).
|
||||
# So we'll just test a 2000-byte value.
|
||||
# So we'll just test a 2000-byte value, and for awk, we test a line with
|
||||
# almost 1000 words, and one variable with 4 lines of 500 bytes each.
|
||||
|
||||
AT_SETUP([Substitute a 2000-byte string])
|
||||
|
||||
AT_DATA([Foo.in], [@foo@
|
||||
])
|
||||
AT_DATA([Bar.in], [@bar@
|
||||
])
|
||||
AT_DATA([Baz.in], [@baz@
|
||||
])
|
||||
|
||||
AT_DATA([configure.ac],
|
||||
[[AC_INIT
|
||||
AC_CONFIG_AUX_DIR($top_srcdir/build-aux)
|
||||
AC_SUBST([foo], ]m4_for([n], 1, 100,, ....................)[)
|
||||
AC_CONFIG_FILES([Foo])
|
||||
AC_SUBST([bar], "]m4_for([n], 1, 100,, @ @ @ @ @ @ @ @ @ @@)[")
|
||||
AC_SUBST([baz], "]m4_for([n], 1, 4,, m4_for([m], 1, 25,, ... ... ... ... ....)
|
||||
)[")
|
||||
AC_CONFIG_FILES([Foo Bar Baz])
|
||||
AC_OUTPUT
|
||||
]])
|
||||
|
||||
@ -558,6 +566,11 @@ AT_CHECK_AUTOCONF
|
||||
AT_CHECK_CONFIGURE
|
||||
AT_CHECK([cat Foo], 0, m4_for([n], 1, 100,, ....................)
|
||||
)
|
||||
AT_CHECK([cat Bar], 0, m4_for([n], 1, 100,, @ @ @ @ @ @ @ @ @ @@)
|
||||
)
|
||||
AT_CHECK([cat Baz], 0, m4_for([n], 1, 4,, m4_for([m], 1, 25,, ... ... ... ... ....)
|
||||
)
|
||||
)
|
||||
AT_CLEANUP
|
||||
|
||||
|
||||
@ -584,25 +597,57 @@ AT_CLEANUP
|
||||
## Substitute and define special characters. ##
|
||||
## ------------------------------------------ ##
|
||||
|
||||
# Use characters special to the shell, sed, and M4.
|
||||
# Use characters special to the shell, sed, awk, and M4.
|
||||
|
||||
AT_SETUP([Substitute and define special characters])
|
||||
|
||||
AT_DATA([Foo.in], [@foo@
|
||||
@bar@@notsubsted@@baz@ stray @ and more@@@baz@
|
||||
abc@bar@baz@baz
|
||||
abc@bar@@baz@baz
|
||||
abc@bar@@baz@baz@
|
||||
abc@bar @baz@baz
|
||||
abc@bar @baz@baz@
|
||||
abc@bar @baz@@baz@
|
||||
@file@
|
||||
@file@
|
||||
X@file@
|
||||
@file@X
|
||||
])
|
||||
|
||||
AT_DATA([File],
|
||||
[@foo@@bar@
|
||||
])
|
||||
|
||||
AT_CONFIGURE_AC(
|
||||
[[foo="AS@&t@_ESCAPE([[X*'[]+ ", `\($foo]])"
|
||||
[[foo="AS@&t@_ESCAPE([[X*'[]+ ",& &`\($foo \& \\& \\\& \\\\& \ \\ \\\]])"
|
||||
bar="@foo@ @baz@"
|
||||
baz=bla
|
||||
AC_SUBST([foo])
|
||||
AC_DEFINE([foo], [[X*'[]+ ", `\($foo]], [Awful value.])
|
||||
AC_SUBST([bar])
|
||||
AC_SUBST([baz])
|
||||
file=File
|
||||
AC_SUBST_FILE([file])
|
||||
AC_DEFINE([foo], [[X*'[]+ ",& &`\($foo]], [Awful value.])
|
||||
AC_CONFIG_FILES([Foo])]])
|
||||
|
||||
AT_CHECK_AUTOCONF
|
||||
AT_CHECK_AUTOHEADER
|
||||
AT_CHECK_CONFIGURE
|
||||
AT_CHECK([cat Foo], 0, [[X*'[]+ ", `\($foo
|
||||
AT_CHECK([cat Foo], 0, [[X*'[]+ ",& &`\($foo \& \\& \\\& \\\\& \ \\ \\\
|
||||
@foo@ @baz@@notsubsted@bla stray @ and more@@bla
|
||||
abc@foo@ @baz@baz@baz
|
||||
abc@foo@ @baz@blabaz
|
||||
abc@foo@ @baz@blabaz@
|
||||
abc@bar blabaz
|
||||
abc@bar blabaz@
|
||||
abc@bar blabla
|
||||
@foo@@bar@
|
||||
@foo@@bar@
|
||||
X@file@
|
||||
@file@X
|
||||
]])
|
||||
AT_CHECK_DEFINES([[#define foo X*'[]+ ", `\($foo
|
||||
AT_CHECK_DEFINES([[#define foo X*'[]+ ",& &`\($foo
|
||||
]])
|
||||
AT_CLEANUP
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user