tree-wide: make more global variables static

let's export as little as we can

diff --git a/src/basic/mempool.h b/src/basic/mempool.h
index fea7841bcff8ebe0fd097f6869bfaf59088b39db..0618b8dd223c8b7de0fcb2b88545aaa7844b7b69 100644 (file)
--- a/src/basic/mempool.h
+++ b/src/basic/mempool.h
@@ -36,7 +36,7 @@ void* mempool_alloc0_tile(struct mempool *mp);
 void mempool_free_tile(struct mempool *mp, void *p);
 
 #define DEFINE_MEMPOOL(pool_name, tile_type, alloc_at_least) \
-struct mempool pool_name = { \
+static struct mempool pool_name = { \
         .tile_size = sizeof(tile_type), \
         .at_least = alloc_at_least, \
 }