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-rw-r--r--aclocal.m42
1 files changed, 1 insertions, 1 deletions
diff --git a/aclocal.m4 b/aclocal.m4
index 582e0a8e7b..c995e45c4c 100644
--- a/aclocal.m4
+++ b/aclocal.m4
@@ -94,7 +94,7 @@ cross_compiling=$ac_cv_prog_cc_cross
AC_DEFUN(LIBC_PROG_FOO_GNU,
[# Most GNU programs take a -v and spit out some text including
# the word 'GNU'. Some try to read stdin, so give them /dev/null.
-if $1 -v </dev/null 2>&1 | grep -q GNU; then
+if $1 -v </dev/null 2>&1 | grep GNU 2>&1 > /dev/null; then
$2
else
$3