https://bugs.gentoo.org/945194 - guard bool for modern compilers
https://bugs.gentoo.org/712644 - type aliaces for musl
--- a/src/iplog.h
+++ b/src/iplog.h
@@ -21,6 +21,9 @@
 #ifndef __IPLOG_H
 #define __IPLOG_H
 
+#define _GNU_SOURCE 1
+#include <sys/types.h> /* for u_* types */
+
 #ifndef HAVE_IPADDR_T
 	typedef u_int32_t ipaddr_t;
 #endif
@@ -82,7 +82,9 @@
 #	define min(x,y) ((x) < (y) ? (x) : (y))
 #endif
 
+#if __STDC_VERSION__ <= 201710L
 typedef enum { false, true } bool;
+#endif
 
 #ifdef HAVE_PATHS_H
 #	include <paths.h>
C23 and GNU-15 compatibility, explicitly cast sockaddr
--- a/src/iplog_tcp.c
+++ b/src/iplog_tcp.c
@@ -144,7 +144,7 @@
 
 		ret = sendto(raw_sock, (char *) xip,
 				sizeof(struct ip) + sizeof(struct tcphdr), 0,
-#if !defined(__GLIBC__) || (__GLIBC__ < 2)
+#if !defined(__GLIBC__) || (__GLIBC__ < 2) || (__STDC_VERSION__ > 201710L)
 				(struct sockaddr *)
 #endif
 				&fn_sin,