configure.ac: Set the correct build variables for Nettle.

diff --git a/configure.ac b/configure.ac
index b9de9d7..b360139 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -48,7 +48,7 @@ PKG_CHECK_MODULES([nettle], [nettle >= 2.4], [], [
   case $nettlep in
     nil) AC_MSG_ERROR([Failed to find Nettle library.]) ;;
   esac
-  NETTLE_CFLAGS= NETTLE_LIBS=-lnettle])
+  nettle_CFLAGS= nettle_LIBS=-lnettle])
 
 dnl--------------------------------------------------------------------------
 dnl Perl programming environment.