diff --git a/include/dlfcn.h b/include/dlfcn.h
--- a/include/dlfcn.h
+++ b/include/dlfcn.h
@@ -80,7 +80,7 @@
 	const char	*dli_sname;	/* Name of nearest symbol. */
 	void		*dli_saddr;	/* Address of nearest symbol. */
 } Dl_info;
-#if __POSIX_VISIBLE >= 202405
+#if __POSIX_VISIBLE >= 202405 || __BSD_VISIBLE
 typedef struct dl_info Dl_info_t;
 #endif
 
@@ -122,7 +122,7 @@
 void	*dlopen(const char *, int);
 void	*dlsym(void * __restrict, const char * __restrict);
 
-#if __POSIX_VISIBLE >= 202405
+#if __POSIX_VISIBLE >= 202405 || __BSD_VISIBLE
 int	 dladdr(const void * __restrict, Dl_info * __restrict);
 #endif
 
diff --git a/include/stdlib.h b/include/stdlib.h
--- a/include/stdlib.h
+++ b/include/stdlib.h
@@ -157,7 +157,8 @@
 /*
  * If we're in a mode greater than C99, expose C11 functions.
  */
-#if __ISO_C_VISIBLE >= 2011 || __cplusplus >= 201103L || __POSIX_VISIBLE >= 202405
+#if __ISO_C_VISIBLE >= 2011 || __cplusplus >= 201103L || \
+    __POSIX_VISIBLE >= 202405 || __BSD_VISIBLE
 void *	aligned_alloc(size_t, size_t) __malloc_like __alloc_align(1)
 	    __alloc_size(2);
 int	at_quick_exit(void (*)(void)) __noexcept;
@@ -236,7 +237,7 @@
 int	 ptsname_r(int, char *, size_t);
 #endif
 
-#if __POSIX_VISIBLE >= 202405
+#if __POSIX_VISIBLE >= 202405 || __BSD_VISIBLE
 void	 qsort_r(void *, size_t, size_t,
 	    int (*)(const void *, const void *, void *), void *);
 void	*reallocarray(void *, size_t, size_t) __result_use_check
diff --git a/include/string.h b/include/string.h
--- a/include/string.h
+++ b/include/string.h
@@ -63,7 +63,7 @@
 #endif
 int	 memcmp(const void *, const void *, size_t) __pure;
 void	*(memcpy)(void * __restrict, const void * __restrict, size_t);
-#if __POSIX_VISIBLE >= 202405
+#if __POSIX_VISIBLE >= 202405 || __BSD_VISIBLE
 void	*(memmem)(const void *, size_t, const void *, size_t) __pure;
 #endif
 void	*(memmove)(void *, const void *, size_t);
@@ -98,7 +98,7 @@
 #if __POSIX_VISIBLE >= 200112
 int	 strerror_r(int, char *, size_t);
 #endif
-#if __POSIX_VISIBLE >= 202405
+#if __POSIX_VISIBLE >= 202405 || __BSD_VISIBLE
 size_t	 (strlcat)(char * __restrict, const char * __restrict, size_t);
 size_t	 (strlcpy)(char * __restrict, const char * __restrict, size_t);
 #endif
diff --git a/include/time.h b/include/time.h
--- a/include/time.h
+++ b/include/time.h
@@ -180,12 +180,12 @@
 #include <xlocale/_time.h>
 #endif
 
-#if __ISO_C_VISIBLE >= 2011 || __POSIX_VISIBLE >= 202405 || \
+#if __ISO_C_VISIBLE >= 2011 || __POSIX_VISIBLE >= 202405 || __BSD_VISIBLE || \
     (defined(__cplusplus) && __cplusplus >= 201703)
 #include <sys/_timespec.h>
 /* ISO/IEC 9899:2011 7.27.2.5 The timespec_get function */
 #define TIME_UTC	1	/* time elapsed since epoch */
-#if __ISO_C_VISIBLE >= 2023 || __POSIX_VISIBLE >= 202405
+#if __ISO_C_VISIBLE >= 2023 || __POSIX_VISIBLE >= 202405 || __BSD_VISIBLE
 /* ISO/IEC 9899:2024 7.29.1 Components of time */
 #define TIME_MONOTONIC	2	/* monotonic time */
 #endif
diff --git a/include/unistd.h b/include/unistd.h
--- a/include/unistd.h
+++ b/include/unistd.h
@@ -484,7 +484,7 @@
 #endif
 
 /* 1003.1-2024 */
-#if __POSIX_VISIBLE >= 202405
+#if __POSIX_VISIBLE >= 202405 || __BSD_VISIBLE
 pid_t	 _Fork(void);
 int	 getentropy(void *, size_t);
 int	 getresgid(gid_t *, gid_t *, gid_t *);
diff --git a/include/wchar.h b/include/wchar.h
--- a/include/wchar.h
+++ b/include/wchar.h
@@ -235,7 +235,7 @@
 	    size_t, mbstate_t * __restrict);
 #endif
 
-#if __POSIX_VISIBLE >= 202405
+#if __POSIX_VISIBLE >= 202405 || __BSD_VISIBLE
 size_t	wcslcat(wchar_t *, const wchar_t *, size_t);
 size_t	wcslcpy(wchar_t *, const wchar_t *, size_t);
 #endif