From 4e292b84dfece93df00045950916eade2a5d7a77 Mon Sep 17 00:00:00 2001
From: Kamil Rytarowski <n54@gmx.com>
Date: Sun, 29 Sep 2019 18:06:11 +0200
Subject: [PATCH 2/4] Avoids picking hidden internal gethostbyaddr_r from libc

Fixes NetBSD support.
---
 unix/tcl.m4 | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/unix/tcl.m4 b/unix/tcl.m4
index aaba8d75e..4f880c018 100644
--- a/unix/tcl.m4
+++ b/unix/tcl.m4
@@ -2518,7 +2518,20 @@ AC_DEFUN([SC_TCL_CHECK_BROKEN_FUNC],[
 #
 #--------------------------------------------------------------------
 
-AC_DEFUN([SC_TCL_GETHOSTBYADDR_R], [AC_CHECK_FUNC(gethostbyaddr_r, [
+AC_DEFUN([SC_TCL_GETHOSTBYADDR_R], [
+    # Avoids picking hidden internal symbol from libc
+    SC_TCL_GETHOSTBYADDR_R_DECL
+
+    if test "$tcl_cv_api_gethostbyaddr_r" = yes; then
+	SC_TCL_GETHOSTBYADDR_R_TYPE
+    fi
+])
+
+AC_DEFUN([SC_TCL_GETHOSTBYADDR_R_DECL], [AC_CHECK_DECLS(gethostbyaddr_r, [
+    tcl_cv_api_gethostbyaddr_r=yes],[tcl_cv_api_gethostbyaddr_r=no],[#include <netdb.h>])
+])
+
+AC_DEFUN([SC_TCL_GETHOSTBYADDR_R_TYPE], [AC_CHECK_FUNC(gethostbyaddr_r, [
     AC_CACHE_CHECK([for gethostbyaddr_r with 7 args], tcl_cv_api_gethostbyaddr_r_7, [
     AC_TRY_COMPILE([
 	#include <netdb.h>
-- 
2.21.0