Make it constexpr
#include <stdint.h>
+#include "macros.h"
+
typedef uint32_t clap_id;
-static const clap_id CLAP_INVALID_ID = UINT32_MAX;
\ No newline at end of file
+static const CLAP_CONSTEXPR clap_id CLAP_INVALID_ID = UINT32_MAX;
\ No newline at end of file
