Print speexdsp error when enable_speex is set

diff --git a/configure.ac b/configure.ac
index 212d9fd5f4b43fc2cb0887ff1ad2a9a220d9fc11..671ca537aaa11bbe8fccdf1b43ceb5ed6a7209b2 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -2851,7 +2851,7 @@ AS_IF([test "${enable_speex}" != "no"], [
   PKG_CHECK_MODULES([SPEEXDSP], [speexdsp], [
     have_speexdsp="yes"
   ], [
-    AS_IF([test "${enable_speex}" = "yes"], [
+    AS_IF([test -n "${enable_speex}"], [
       AC_MSG_ERROR([${SPEEXDSP_PKG_ERRORS}.])
     ])
   ])