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* lib/autoconf/programs.m4 (AC_PROG_SED): Catch script length

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limits in Solaris 8 /usr/ucb/sed by testing a long script.
This commit is contained in:
Stepan Kasal 2006-05-22 16:27:08 +00:00
parent a2cc685508
commit 49bb58f8f6
2 changed files with 18 additions and 3 deletions
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6
ChangeLog
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@ -1,3 +1,9 @@
2006-05-21 Paul Eggert <eggert@cs.ucla.edu>
and Ralf Wildenhues <Ralf.Wildenhues@gmx.de>
* lib/autoconf/programs.m4 (AC_PROG_SED): Catch script length
limits in Solaris 8 /usr/ucb/sed by testing a long script.
2006-05-22 Stepan Kasal <kasal@ucw.cz>
* doc/autoconf.texi (Defining Symbols): Literal parameter of

15
lib/autoconf/programs.m4
View File

@ -812,11 +812,20 @@ adjust the code.])
# as few characters as possible. Prefer GNU sed if found.
AC_DEFUN([AC_PROG_SED],
[AC_CACHE_CHECK([for a sed that does not truncate output], ac_cv_path_SED,
[_AC_PATH_PROG_FEATURE_CHECK(SED, [sed gsed],
[dnl ac_script should not contain more than 99 commands (for HP-UX sed),
dnl but more than about 7000 bytes, to catch a limit in Solaris 8 /usr/ucb/sed.
ac_script=s/aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb/
for ac_i in 1 2 3 4 5 6 7; do
ac_script="$ac_script$as_nl$ac_script"
done
echo "$ac_script" | sed 99q >conftest.sed
$as_unset ac_script || ac_script=
_AC_PATH_PROG_FEATURE_CHECK(SED, [sed gsed],
[_AC_FEATURE_CHECK_LENGTH([ac_path_SED], [ac_cv_path_SED],
["$ac_path_SED" -e 's/a$//'])])])
["$ac_path_SED" -f conftest.sed])])])
SED="$ac_cv_path_SED"
AC_SUBST([SED])
AC_SUBST([SED])dnl
rm -f conftest.sed
])# AC_PROG_SED