Introduce --enable-new-dtags configure option.

This option switches on ld.bfd --enable-new-dtags by default.

	* configure.ac: Add --enable-new-dtags option.
	* ldmain.c: Set link_info.new_dtags to 1 if when --enable-new-dtags is
	switched on.
	* configure: Regenerate.
	* config.in: Regenerate.

ld/ChangeLog

@@ -1,3 +1,11 @@
+2017-06-05  Slava Barinov  <v.barinov@samsung.com>
+
+	* configure.ac: Add --enable-new-dtags option.
+	* ldmain.c: Set link_info.new_dtags to 1 if when --enable-new-dtags is
+	switched on.
+	* configure: Regenerate.
+	* config.in: Regenerate.
+
 2017-06-02  H.J. Lu  <hongjiu.lu@intel.com>
 
 	* emulparams/call_nop.sh: Remove -z prefix-nop.
@@ -804,9 +812,9 @@
 2017-02-27   Georg-Johann Lay  <gjl@gcc.gnu.org>
 
 	PR target/20849
-        * scripttempl/avrtiny.sc (__RODATA_PM_OFFSET__): New define.
+	* scripttempl/avrtiny.sc (__RODATA_PM_OFFSET__): New define.
-        (.rodata): New section.
+	(.rodata): New section.
-        (.data): Remove .rodata*.
+	(.data): Remove .rodata*.
 
 2017-02-25  Alan Modra  <amodra@gmail.com>
 

ld/config.in

@@ -13,6 +13,10 @@
 /* Define to 1 if you want to enable -z relro in ELF linker by default. */
 #undef DEFAULT_LD_Z_RELRO
 
+/* Define to 1 if you want to set DT_RUNPATH instead of DT_RPATH by default.
+   */
+#undef DEFAULT_NEW_DTAGS
+
 /* Define to 1 if translation of program messages to the user's native
    language is requested. */
 #undef ENABLE_NLS

ld/configure

@@ -788,6 +788,7 @@ with_sysroot
 enable_gold
 enable_got
 enable_compressed_debug_sections
+enable_new_dtags
 enable_relro
 enable_werror
 enable_build_warnings
@@ -1447,6 +1448,7 @@ Optional Features:
                           multigot)
   --enable-compressed-debug-sections={all,ld,none}
                           compress debug sections by default]
+  --enable-new-dtags      set DT_RUNPATH instead of DT_RPATH by default]
   --enable-relro          enable -z relro in ELF linker by default
   --enable-werror         treat compile warnings as errors
   --enable-build-warnings enable build-time compiler warnings
@@ -11720,7 +11722,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 11723 "configure"
+#line 11725 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -11826,7 +11828,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 11829 "configure"
+#line 11831 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -15540,6 +15542,17 @@ if test "${enable_compressed_debug_sections+set}" = set; then :
 esac
 fi
 
+# Decide setting DT_RUNPATH instead of DT_RPATH by default
+ac_default_new_dtags=unset
+# Provide a configure time option to override our default.
+# Check whether --enable-new_dtags was given.
+if test "${enable_new_dtags+set}" = set; then :
+  enableval=$enable_new_dtags; case "${enableval}" in
+  yes) ac_default_new_dtags=1 ;;
+  no) ac_default_new_dtags=0 ;;
+esac
+fi
+
 # Decide if -z relro should be enabled in ELF linker by default.
 ac_default_ld_z_relro=unset
 # Provide a configure time option to override our default.
@@ -17196,6 +17209,15 @@ $as_echo "#define DEFAULT_FLAG_COMPRESS_DEBUG 1" >>confdefs.h
 
 fi
 
+if test "${ac_default_new_dtags}" = unset; then
+  ac_default_new_dtags=0
+fi
+
+cat >>confdefs.h <<_ACEOF
+#define DEFAULT_NEW_DTAGS $ac_default_new_dtags
+_ACEOF
+
+
 if test "${ac_default_ld_z_relro}" = unset; then
   ac_default_ld_z_relro=0
 fi

ld/configure.ac

@@ -155,6 +155,17 @@ AC_ARG_ENABLE(compressed_debug_sections,
   ,no, | ,none,)  ac_default_compressed_debug_sections=no ;;
 esac])dnl
 
+# Decide setting DT_RUNPATH instead of DT_RPATH by default
+ac_default_new_dtags=unset
+# Provide a configure time option to override our default.
+AC_ARG_ENABLE(new_dtags,
+	      AS_HELP_STRING([--enable-new-dtags],
+	      [set DT_RUNPATH instead of DT_RPATH by default])],
+[case "${enableval}" in
+  yes) ac_default_new_dtags=1 ;;
+  no) ac_default_new_dtags=0 ;;
+esac])dnl
+
 # Decide if -z relro should be enabled in ELF linker by default.
 ac_default_ld_z_relro=unset
 # Provide a configure time option to override our default.
@@ -383,6 +394,13 @@ if test x$ac_default_compressed_debug_sections = xyes ; then
   AC_DEFINE(DEFAULT_FLAG_COMPRESS_DEBUG, 1, [Define if you want compressed debug sections by default.])
 fi
 
+if test "${ac_default_new_dtags}" = unset; then
+  ac_default_new_dtags=0
+fi
+AC_DEFINE_UNQUOTED(DEFAULT_NEW_DTAGS,
+  $ac_default_new_dtags,
+  [Define to 1 if you want to set DT_RUNPATH instead of DT_RPATH by default.])
+
 if test "${ac_default_ld_z_relro}" = unset; then
   ac_default_ld_z_relro=0
 fi

ld/ldmain.c

@@ -298,6 +298,9 @@ main (int argc, char **argv)
 #ifdef DEFAULT_FLAG_COMPRESS_DEBUG
   link_info.compress_debug = COMPRESS_DEBUG_GABI_ZLIB;
 #endif
+#ifdef DEFAULT_NEW_DTAGS
+  link_info.new_dtags = TRUE;
+#endif
 
   ldfile_add_arch ("");
   emulation = get_emulation (argc, argv);