fix linux-specific compilation errors

core/include/blue/core/misc.h

@@ -1,6 +1,10 @@
 #ifndef BLUELIB_MISB_H_
 #define BLUELIB_MISB_H_
 
+#ifndef _Nonnull
+#define _Nonnull
+#endif
+
 #define b_unbox(type, box, member)                                             \
 	((type *_Nonnull)((box) ? (uintptr_t)(box) - (offsetof(type, member)) : 0))
 

core/mt19937.c

@@ -125,7 +125,7 @@ static void init_by_array64(
 }
 
 /* generates a random number on [0, 2^64-1]-interval */
-static unsigned long long genrand64_int64(struct b_random_ctx *context)
+static uint64_t genrand64_int64(struct b_random_ctx *context)
 {
 #if 0
 	/* This is the original implementation. It is replaced by the alternate implementation, below. */

core/sys/linux/random.c

@@ -1,8 +1,8 @@
+#include <fcntl.h>
 #include <stdint.h>
 #include <unistd.h>
-#include <fcntl.h>
 
-uint64_t z__c_platform_random_seed()
+uint64_t z__b_platform_random_seed()
 {
 	int fd = open("/dev/urandom", O_RDONLY);
 	if (fd == -1) {
@@ -18,7 +18,7 @@ uint64_t z__c_platform_random_seed()
 	return v;
 }
 
-uint64_t z__c_platform_random_seed_secure()
+uint64_t z__b_platform_random_seed_secure()
 {
 	int fd = open("/dev/random", O_RDONLY);
 	if (fd == -1) {