configure: improve misleading libnl missing error message

This fixes a misleading error message saying the libnl package
needs to be installed, when it's really the libnl-devel package
needing to be installed.

diff --git a/configure.ac b/configure.ac
index d26bc68b29133e055700100b5df1f10c8aeac2ca..dde2cdeea725759704010c9fda88338400fc9a17 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -2215,7 +2215,7 @@ LIBNL_LIBS=""
 if test "$with_macvtap" = "yes"; then
     PKG_CHECK_MODULES([LIBNL], [libnl-1 >= $LIBNL_REQUIRED], [
     ], [
-        AC_MSG_ERROR([libnl >= $LIBNL_REQUIRED is required for macvtap support])
+        AC_MSG_ERROR([libnl-devel >= $LIBNL_REQUIRED is required for macvtap support])
     ])
 fi