build: Move feature test macros to prelude.h

This replaces the explicit CPPFLAGS list in flags.mk with just
`-include src/prelude.h`, shortening our compiler command lines and
allowing them to be easily documented.

1 files changed, 0 insertions, 1 deletions

diff --git a/src/trie.c b/src/trie.c
index 848f172..a92950b 100644
--- a/src/trie.c
+++ b/src/trie.c
@@ -81,7 +81,6 @@
  * and insert intermediate singleton "jump" nodes when necessary.
  */
 
-#include "prelude.h"
 #include "trie.h"
 
 #include "alloc.h"