work around that solaris bug

diff --git a/acinclude.m4 b/acinclude.m4
index 22a26353e1034adcb497127af38d5ee23ac89a32..57dd78e742662fa59c57ee0de4009b83868016e9 100644 (file)
--- a/acinclude.m4
+++ b/acinclude.m4
@@ -8,7 +8,7 @@ dnl
 dnl execute code, if variable is not set in namespace
 dnl
 AC_DEFUN(AC_PHP_ONCE,[
-  unique=`echo $ac_n "$2$ac_c" | tr -c a-zA-Z0-9 x`
+  unique=`echo $ac_n "$2$ac_c" | tr -c -d a-zA-Z0-9`
   cmd="echo $ac_n \"\$$1$unique$ac_c\""
   if test -n "$unique" && test "`eval $cmd`" = "" ; then
     eval "$1$unique=set"