This fix prevents adding an empty -l to LIBS

diff --git a/acinclude.m4 b/acinclude.m4
index ee88d32e661d92e30c9969dd4d3e73c992423907..896f8ecb5bffb399b779634ca899e7d0f8317922 100644 (file)
--- a/acinclude.m4
+++ b/acinclude.m4
@@ -535,7 +535,9 @@ AC_DEFUN(AC_ADD_INCLUDE,[
 ])
 
 AC_DEFUN(PHP_X_ADD_LIBRARY,[
-  ifelse($2,,$3="-l$1 [$]$3", $3="[$]$3 -l$1")
+  if test -n "$1"; then 
+    ifelse($2,,$3="-l$1 [$]$3", $3="[$]$3 -l$1")
+  fi
 ])
 
 dnl