diff --git a/acinclude.m4 b/acinclude.m4
index 701a2db4aa5..97ec99c09a8 100644
--- a/acinclude.m4
+++ b/acinclude.m4
@@ -247,6 +247,16 @@ AC_DEFUN(AC_ADD_LIBRARY,[
   ])
 ])
 
+dnl
+dnl AC_ADD_LIBRARY_DEFER(library[, append])
+dnl
+dnl add a library to the link line (defferred)
+AC_DEFUN(AC_ADD_LIBRARY_DEFER,[
+  AC_PHP_ONCE(LIBRARY, $1, [
+    ifelse($#, 1, DLIBS="-l$1 $DLIBS", DLIBS="$DLIBS -l$1")
+  ])
+])
+
 dnl
 dnl AC_ADD_LIBRARY_WITH_PATH(library, path)
 dnl
@@ -359,7 +369,7 @@ AC_DEFUN(PHP_EXTENSION,[
       EXT_LIBS="$EXT_LIBS $1/$_extlib"
       EXT_STATIC="$EXT_STATIC $1"
     else
-      AC_DEFINE_UNQUOTED([COMPILE_DL_]translit($1,a-z,A-Z), 1, Whether to build $1 as dynamic module)
+      AC_DEFINE_UNQUOTED([COMPILE_DL_]translit($1,a-z-,A-Z_), 1, Whether to build $1 as dynamic module)
       EXT_SHARED="$EXT_SHARED $1"
     fi
     PHP_FAST_OUTPUT(ext/$1/Makefile)
diff --git a/configure.in b/configure.in
index 5fae5b2409f..edae80e5887 100644
--- a/configure.in
+++ b/configure.in
@@ -674,7 +674,7 @@ dnl test -n "$GCC" && CFLAGS="$CFLAGS -fpic"
 dnl add -fPIC option on Solaris if we are building dynamic extensions
 dnl PHP_SOLARIS_PIC_WEIRDNESS
 
-EXTRA_LIBS="$EXTRA_LIBS $LIBS"
+EXTRA_LIBS="$EXTRA_LIBS $DLIBS $LIBS"
 LIBS=""
 LDFLAGS=""
 if test "$PHP_THREAD_SAFETY" = "yes"; then