-OLD_CPPFLAGS="$CPPFLAGS"
-OLD_LDFLAGS="$LDFLAGS"
-OLD_LIBS="$LIBS"
-
-have_ao="yes"
-AC_ARG_WITH(ao_headers, [AS_HELP_STRING(--with-ao-headers=dir,
- [look for ao/ao.h also in dir])])
-if test -n "$with_ao_headers"; then
- ao_cppflags="-I$with_ao_headers"
- CPPFLAGS="$CPPFLAGS $ao_cppflags"
-fi
-AC_ARG_WITH(ao_libs, [AS_HELP_STRING(--with-ao-libs=dir,
- [look for libao also in dir])])
-if test -n "$with_ao_libs"; then
- ao_libs="-L$with_ao_libs"
- LDFLAGS="$LDFLAGS $ao_libs"
-fi
-msg="no libao support for para_audiod/para_write"
-AC_CHECK_HEADERS([ao/ao.h], [
- ], [
- have_ao="no"
- AC_MSG_WARN([ao.h not found, $msg])
-])
-if test "$have_ao" = "yes"; then
- AC_CHECK_LIB([ao], [ao_initialize], [], [
- have_ao="no"
- AC_MSG_WARN([ao lib not found or not working, $msg])
- ])
-fi
-if test "$have_ao" = "yes"; then
- AC_CHECK_HEADERS([pthread.h], [
- ], [
- have_ao="no"
- AC_MSG_WARN([pthread.h not found, $msg])
- ])
-fi
-if test "$have_ao" = "yes"; then
- AC_CHECK_LIB([pthread], [pthread_create], [], [
- have_ao="no"
- AC_MSG_WARN([pthread lib not found or not working, $msg])
- ])
-fi
-if test "$have_ao" = "yes"; then
- AC_SUBST(ao_cppflags)
- ao_ldflags="$ao_libs -lao -lpthread"
- AC_SUBST(ao_ldflags)
-fi
-
-CPPFLAGS="$OLD_CPPFLAGS"
-LDFLAGS="$OLD_LDFLAGS"
-LIBS="$OLD_LIBS"
+STASH_FLAGS
+LIB_ARG_WITH([ao], [-lao])
+HAVE_AO=yes
+AC_CHECK_HEADER(ao/ao.h, [], HAVE_AO=no)
+AC_CHECK_LIB([ao], [ao_initialize], [], HAVE_AO=no)
+LIB_SUBST_FLAGS(ao)
+UNSTASH_FLAGS
+AC_DEFUN([NEED_AO_OBJECTS], [{ test $HAVE_AO = yes -a $HAVE_PTHREAD = yes; }])