[PATCH 2/2] app/graph: fix build reason

[David Marchand <david.marchand@redhat.com>]

When a component is disabled, the reason meson variable must be set to
provide an explanation why.

Since epoll is a Linux thing, report that the graph application is only
supported on Linux.

Fixes: 5b21ffb23308 ("app/graph: add CLI framework")
Cc: stable@dpdk.org

Signed-off-by: David Marchand <david.marchand@redhat.com>
---
 app/graph/meson.build | 1 +
 1 file changed, 1 insertion(+)

diff --git a/app/graph/meson.build b/app/graph/meson.build
index 5b0f966d99..8aefdf505c 100644
--- a/app/graph/meson.build
+++ b/app/graph/meson.build
@@ -5,6 +5,7 @@
 name = 'graph'
 build = cc.has_header('sys/epoll.h')
 if not build
+    reason = 'only supported on Linux'
     subdir_done()
 endif
 
-- 
2.43.0