(AC_PROG_SED): Use diff, not sed; otherwise "make check" fails because

it forbids cmp (I guess because cmp treats files as binary on DOS-like
systems).

diff --git a/lib/autoconf/programs.m4 b/lib/autoconf/programs.m4
index 6b82890d892b81a5c84bb913a2a00ea4b6fe2380..7005c0509f1d5f9ef8380fccda8c494796082fe1 100644 (file)
--- a/lib/autoconf/programs.m4
+++ b/lib/autoconf/programs.m4
@@ -536,7 +536,7 @@ for ac_prog in sed gsed; do
         cp conftest.in conftest.nl
         echo '' >> conftest.nl
         "$ac_sed" -e 's/a$//' < conftest.nl >conftest.out || break
-        cmp conftest.out conftest.nl >/dev/null 2>&1 || break
+        diff conftest.out conftest.nl >/dev/null 2>&1 || break
         ac_count=`expr $ac_count + 1`
         if test $ac_count -gt $ac_max; then
           ac_max=$ac_count