Update build script

compile

@@ -1,8 +1,10 @@
 #!/bin/bash
 
 CC=clang
-CFLAGS="-g -Isrc"
+WAPP_INCLUDE="$(find intern/wapp/src -type d | xargs -I{} echo -n "-I{} ")"
-SRC="src/*.c"
+WAPP_SRC="$(find intern/wapp/src -type f -name "*.c" | xargs -I{} echo -n "{} ")"
+CFLAGS="-g -Isrc $WAPP_INCLUDE"
+SRC="src/*.c $WAPP_SRC"
 OUT=tiny
 
 (set -x ; $CC $CFLAGS $SRC -o $OUT)