$NetBSD: patch-gcc_configure,v 1.1 2014/09/04 18:43:11 jperkin Exp $

Add dl_iterate_phdr detection for FreeBSD and DragonFly.
Detection for NetBSD and OpenBSD is added but commented out in case this
error handling mechanism is activated for these platforms later.

--- gcc/configure.orig	2014-05-28 11:37:50.000000000 +0000
+++ gcc/configure
@@ -27449,6 +27449,20 @@ case "$target" in
       gcc_cv_target_dl_iterate_phdr=no
     fi
     ;;
+  *-*-dragonfly* | *-*-freebsd*)
+  if grep dl_iterate_phdr $target_header_dir/sys/link_elf.h > /dev/null 2>&1; then
+      gcc_cv_target_dl_iterate_phdr=yes
+    else
+      gcc_cv_target_dl_iterate_phdr=no
+    fi
+  ;;
+# *-*-netbsd* | *-*-openbsd*)
+# if grep dl_iterate_phdr $target_header_dir/link_elf.h > /dev/null 2>&1; then
+#     gcc_cv_target_dl_iterate_phdr=yes
+#   else
+#     gcc_cv_target_dl_iterate_phdr=no
+#   fi
+# ;;
 esac
 
 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then