4 files changed, 5 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/getpt.c b/sysdeps/unix/sysv/linux/getpt.c
index 784110abbf..52532f7190 100644
--- a/sysdeps/unix/sysv/linux/getpt.c
+++ b/sysdeps/unix/sysv/linux/getpt.c
@@ -19,6 +19,7 @@
 #include <fcntl.h>
 #include <unistd.h>
 #include <paths.h>
+#include <stdlib.h>
 
 /* Path to the master pseudo terminal cloning device.  */
 #define _PATH_DEVPTMX _PATH_DEV "ptmx"
@@ -37,4 +38,5 @@ __getpt (void)
 {
   return __posix_openpt (O_RDWR);
 }
+libc_hidden_def (__getpt)
 weak_alias (__getpt, getpt)
diff --git a/sysdeps/unix/sysv/linux/grantpt.c b/sysdeps/unix/sysv/linux/grantpt.c
index b4addfded9..57e988fe36 100644
--- a/sysdeps/unix/sysv/linux/grantpt.c
+++ b/sysdeps/unix/sysv/linux/grantpt.c
@@ -39,3 +39,4 @@ grantpt (int fd)
     __set_errno (EINVAL);
   return ret;
 }
+libc_hidden_def (grantpt)
diff --git a/sysdeps/unix/sysv/linux/ptsname.c b/sysdeps/unix/sysv/linux/ptsname.c
index b9701da514..9f78ef42d8 100644
--- a/sysdeps/unix/sysv/linux/ptsname.c
+++ b/sysdeps/unix/sysv/linux/ptsname.c
@@ -79,4 +79,5 @@ __ptsname_r (int fd, char *buf, size_t buflen)
   __set_errno (save_errno);
   return 0;
 }
+libc_hidden_def (__ptsname_r)
 weak_alias (__ptsname_r, ptsname_r)
diff --git a/sysdeps/unix/sysv/linux/unlockpt.c b/sysdeps/unix/sysv/linux/unlockpt.c
index 57d08d8e96..ae5148afe7 100644
--- a/sysdeps/unix/sysv/linux/unlockpt.c
+++ b/sysdeps/unix/sysv/linux/unlockpt.c
@@ -35,3 +35,4 @@ unlockpt (int fd)
     __set_errno (EINVAL);
   return ret;
 }
+libc_hidden_def (unlockpt)