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(_AC_RUN_LOG_STDERR, AC_EGREP_CPP): Do not assume that egrep and fgrep exist.

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Paul Eggert 2002-05-29 22:25:50 +00:00
parent f1496addfd
commit a747233e33
1 changed files with 3 additions and 2 deletions
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5
lib/autoconf/general.m4
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@ -1977,7 +1977,7 @@ AC_DEFUN([_AC_RUN_LOG_STDERR],
[{ ($2) >&AS_MESSAGE_LOG_FD
($1) 2>conftest.er1
ac_status=$?
egrep -v '^ *\+' conftest.er1 >conftest.err
grep -v '^ *+' conftest.er1 >conftest.err
rm -f conftest.er1
cat conftest.err >&AS_MESSAGE_LOG_FD
echo "$as_me:$LINENO: \$? = $ac_status" >&AS_MESSAGE_LOG_FD
@ -2090,12 +2090,13 @@ AC_DEFUN([AC_TRY_CPP],
# come early, it is not included in AC_BEFORE checks.
AC_DEFUN([AC_EGREP_CPP],
[AC_LANG_PREPROC_REQUIRE()dnl
AC_REQUIRE([AC_PROG_EGREP])dnl
AC_LANG_CONFTEST([AC_LANG_SOURCE([[$2]])])
dnl eval is necessary to expand ac_cpp.
dnl Ultrix and Pyramid sh refuse to redirect output of eval, so use subshell.
if (eval "$ac_cpp conftest.$ac_ext") 2>&AS_MESSAGE_LOG_FD |
dnl Quote $1 to prevent m4 from eating character classes
egrep "[$1]" >/dev/null 2>&1; then
$EGREP "[$1]" >/dev/null 2>&1; then
m4_default([$3], :)
m4_ifvaln([$4], [else
$4])dnl