4 files changed, 6 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/common/bits/errno.h b/libc/sysdeps/linux/common/bits/errno.h
index a5ac1a47f..92227fe73 100644
--- a/libc/sysdeps/linux/common/bits/errno.h
+++ b/libc/sysdeps/linux/common/bits/errno.h
@@ -41,6 +41,7 @@
 # ifndef __ASSEMBLER__
 /* Function to get address of global `errno' variable.  */
 extern int *__errno_location (void) __THROW __attribute__ ((__const__));
+libc_hidden_proto(__errno_location)
 
 #  ifdef __UCLIBC_HAS_THREADS__
 /* When using threads, errno is a per-thread value.  */
diff --git a/libc/sysdeps/linux/common/bits/getopt.h b/libc/sysdeps/linux/common/bits/getopt.h
index a28d0a40b..0307757a6 100644
--- a/libc/sysdeps/linux/common/bits/getopt.h
+++ b/libc/sysdeps/linux/common/bits/getopt.h
@@ -153,8 +153,10 @@ struct option
    errors, only prototype getopt for the GNU C library.  */
 extern int getopt (int ___argc, char *const *___argv, const char *__shortopts)
        __THROW;
+libc_hidden_proto(getopt)
 #else /* not __GNU_LIBRARY__ */
 extern int getopt ();
+libc_hidden_proto(getopt)
 #endif /* __GNU_LIBRARY__ */
 
 #if defined __UCLIBC_HAS_GNU_GETOPT__ || defined __UCLIBC_HAS_GETOPT_LONG__
diff --git a/libc/sysdeps/linux/common/bits/socket.h b/libc/sysdeps/linux/common/bits/socket.h
index c352a1712..ac5a4336b 100644
--- a/libc/sysdeps/linux/common/bits/socket.h
+++ b/libc/sysdeps/linux/common/bits/socket.h
@@ -269,6 +269,7 @@ struct cmsghdr
 
 extern struct cmsghdr *__cmsg_nxthdr (struct msghdr *__mhdr,
 				      struct cmsghdr *__cmsg) __THROW;
+libc_hidden_proto(__cmsg_nxthdr)
 #ifdef __USE_EXTERN_INLINES
 # ifndef _EXTERN_INLINE
 #  define _EXTERN_INLINE extern __inline
diff --git a/libc/sysdeps/linux/common/bits/uClibc_stdio.h b/libc/sysdeps/linux/common/bits/uClibc_stdio.h
index 843a2f2c3..3631ef79f 100644
--- a/libc/sysdeps/linux/common/bits/uClibc_stdio.h
+++ b/libc/sysdeps/linux/common/bits/uClibc_stdio.h
@@ -382,7 +382,9 @@ extern void __stdio_init_mutex(__UCLIBC_MUTEX_TYPE *m) attribute_hidden;
 #endif
 
 extern int __fgetc_unlocked(FILE *__stream);
+libc_hidden_proto(__fgetc_unlocked)
 extern int __fputc_unlocked(int __c, FILE *__stream);
+libc_hidden_proto(__fputc_unlocked)
 
 /* First define the default definitions.
    They are overridden below as necessary. */