fix build yet again

(i am too stupid to include all relevant changes
in my commits, mostly due to the fact that my
local diffs are almost always tremendous)

CMakeLists.txt

@@ -41,7 +41,7 @@ if(DEBUG)
     # have it in there just in case (somebody check on this at some point plz)
     set(CMAKE_ASM_FLAGS "${CMAKE_ASM_FLAGS} -O0 -ggdb")
 else()
-    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -O2")
+    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -O2 -ggdb")
 endif()
 
 # --whole-archive ensures no (seemingly) unused symbols
@@ -59,7 +59,7 @@ set(GAY_DEFINITIONS
     "_GAY_SOURCE=202109L"
 )
 set(GAY_KERNEL_DEFINITIONS
-    "__KERNEL__"
+    "_KERNEL" # FreeBSD uses the same macro name
     ${GAY_DEFINITIONS}
 )
 

include/gay/arith.h

@@ -7,6 +7,7 @@
 #endif
 
 #include <gay/cdefs.h>
+#include <gay/types.h>
 
 /**
  * @defgroup arith Safe integer arithmetic primitives