diff mbox series

[v5,12/14] ARC: Build Infrastructure

Message ID 20200409025615.27003-13-vgupta@synopsys.com
State New
Headers show
Series glibc port to ARC processors | expand

Commit Message

Michael Kerrisk \(man-pages\) via Libc-alpha April 9, 2020, 2:56 a.m. UTC
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
---
 config.h.in                                |   3 +
 scripts/build-many-glibcs.py               |   9 +
 sysdeps/arc/Implies                        |   3 +
 sysdeps/arc/Makefile                       |  21 +++
 sysdeps/arc/Versions                       |   8 +
 sysdeps/arc/configure                      | 182 +++++++++++++++++++++
 sysdeps/arc/configure.ac                   |  26 +++
 sysdeps/arc/nptl/Makefile                  |  22 +++
 sysdeps/arc/preconfigure                   |  14 ++
 sysdeps/unix/sysv/linux/arc/Implies        |   3 +
 sysdeps/unix/sysv/linux/arc/Makefile       |  29 ++++
 sysdeps/unix/sysv/linux/arc/Versions       |  16 ++
 sysdeps/unix/sysv/linux/arc/configure      |   4 +
 sysdeps/unix/sysv/linux/arc/configure.ac   |   4 +
 sysdeps/unix/sysv/linux/arc/ldconfig.h     |  27 +++
 sysdeps/unix/sysv/linux/arc/shlib-versions |   7 +
 16 files changed, 378 insertions(+)
 create mode 100644 sysdeps/arc/Implies
 create mode 100644 sysdeps/arc/Makefile
 create mode 100644 sysdeps/arc/Versions
 create mode 100644 sysdeps/arc/configure
 create mode 100644 sysdeps/arc/configure.ac
 create mode 100644 sysdeps/arc/nptl/Makefile
 create mode 100644 sysdeps/arc/preconfigure
 create mode 100644 sysdeps/unix/sysv/linux/arc/Implies
 create mode 100644 sysdeps/unix/sysv/linux/arc/Makefile
 create mode 100644 sysdeps/unix/sysv/linux/arc/Versions
 create mode 100644 sysdeps/unix/sysv/linux/arc/configure
 create mode 100644 sysdeps/unix/sysv/linux/arc/configure.ac
 create mode 100644 sysdeps/unix/sysv/linux/arc/ldconfig.h
 create mode 100644 sysdeps/unix/sysv/linux/arc/shlib-versions

Comments

Joseph Myers April 17, 2020, 11:10 p.m. UTC | #1
On Wed, 8 Apr 2020, Vineet Gupta via Libc-alpha wrote:

> +  GLIBC_PRIVATE {
> +    # A copy of sigaction lives in libpthread, and needs these.
> +    __default_rt_sa_restorer;
> +  }

Not a requirement for this port, given that this is GLIBC_PRIVATE so can 
always be changed later, but does sigaction actually need to live in 
libpthread?  Or given the work that's been done on moving functions from 
libpthread to libc (and the corresponding dynamic linker work that mean 
it's now possible to move versioned symbols like that), could the copy of 
sigaction in libpthread be removed?
Vineet Gupta April 18, 2020, 12:12 a.m. UTC | #2
On 4/17/20 4:10 PM, Joseph Myers wrote:
> On Wed, 8 Apr 2020, Vineet Gupta via Libc-alpha wrote:
> 
>> +  GLIBC_PRIVATE {
>> +    # A copy of sigaction lives in libpthread, and needs these.
>> +    __default_rt_sa_restorer;
>> +  }
> 
> Not a requirement for this port, given that this is GLIBC_PRIVATE so can 
> always be changed later, but does sigaction actually need to live in 
> libpthread?

From my old branches, I added this back in 2018 when working on some cancellation
failures.

>  Or given the work that's been done on moving functions from 
> libpthread to libc (and the corresponding dynamic linker work that mean 
> it's now possible to move versioned symbols like that), could the copy of 
> sigaction in libpthread be removed?

I don't think there's any ARC specific code which requires a restorer copy in
libpthread. I can remove this and give the build a spin to see if anything breaks.
Vineet Gupta April 18, 2020, 5:46 a.m. UTC | #3
On 4/17/20 5:12 PM, Vineet Gupta via Libc-alpha wrote:
> On 4/17/20 4:10 PM, Joseph Myers wrote:
>> On Wed, 8 Apr 2020, Vineet Gupta via Libc-alpha wrote:
>>
>>> +  GLIBC_PRIVATE {
>>> +    # A copy of sigaction lives in libpthread, and needs these.
>>> +    __default_rt_sa_restorer;
>>> +  }
>>
>> Not a requirement for this port, given that this is GLIBC_PRIVATE so can 
>> always be changed later, but does sigaction actually need to live in 
>> libpthread?
> 
> From my old branches, I added this back in 2018 when working on some cancellation
> failures.
> 
>>  Or given the work that's been done on moving functions from 
>> libpthread to libc (and the corresponding dynamic linker work that mean 
>> it's now possible to move versioned symbols like that), could the copy of 
>> sigaction in libpthread be removed?
> 
> I don't think there's any ARC specific code which requires a restorer copy in
> libpthread. I can remove this and give the build a spin to see if anything breaks.

As of today, libpthread_pic.a includes sigaction.os hence the need for export as
well: removing it from Version file causes build errors.

But when sigaction.os dependency is removed, this won't be needed.
diff mbox series

Patch

diff --git a/config.h.in b/config.h.in
index dea43df438f6..08962dfed075 100644
--- a/config.h.in
+++ b/config.h.in
@@ -109,6 +109,9 @@ 
 /* AArch64 big endian ABI */
 #undef HAVE_AARCH64_BE
 
+/* ARC big endian ABI */
+#undef HAVE_ARC_BE
+
 /* C-SKY ABI version.  */
 #undef CSKYABI
 
diff --git a/scripts/build-many-glibcs.py b/scripts/build-many-glibcs.py
index 942a2227806a..64a836c52ea9 100755
--- a/scripts/build-many-glibcs.py
+++ b/scripts/build-many-glibcs.py
@@ -162,6 +162,15 @@  class Context(object):
                                        'cfg': ['--disable-multi-arch']}])
         self.add_config(arch='aarch64_be',
                         os_name='linux-gnu')
+        self.add_config(arch='arc',
+                        os_name='linux-gnu',
+                        gcc_cfg=['--disable-multilib', '--with-cpu=hs38'])
+        self.add_config(arch='arc',
+                        os_name='linux-gnuhf',
+                        gcc_cfg=['--disable-multilib', '--with-cpu=hs38_linux'])
+        self.add_config(arch='arceb',
+                        os_name='linux-gnu',
+                        gcc_cfg=['--disable-multilib', '--with-cpu=hs38'])
         self.add_config(arch='alpha',
                         os_name='linux-gnu')
         self.add_config(arch='arm',
diff --git a/sysdeps/arc/Implies b/sysdeps/arc/Implies
new file mode 100644
index 000000000000..780c4e246769
--- /dev/null
+++ b/sysdeps/arc/Implies
@@ -0,0 +1,3 @@ 
+wordsize-32
+ieee754/flt-32
+ieee754/dbl-64
diff --git a/sysdeps/arc/Makefile b/sysdeps/arc/Makefile
new file mode 100644
index 000000000000..56ac503bfe43
--- /dev/null
+++ b/sysdeps/arc/Makefile
@@ -0,0 +1,21 @@ 
+# ARC Makefile
+# Copyright (C) 1993-2020 Free Software Foundation, Inc.
+# This file is part of the GNU C Library.
+
+# The GNU C Library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2.1 of the License, or (at your option) any later version.
+
+# The GNU C Library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# Lesser General Public License for more details.
+
+# You should have received a copy of the GNU Lesser General Public
+# License along with the GNU C Library.  If not, see
+# <https://www.gnu.org/licenses/>.
+
+# We don't support long doubles as a distinct type.  We don't need to set
+# this variable; it's here mostly for documentational purposes.
+long-double-fcts = no
diff --git a/sysdeps/arc/Versions b/sysdeps/arc/Versions
new file mode 100644
index 000000000000..6ac7b8e49505
--- /dev/null
+++ b/sysdeps/arc/Versions
@@ -0,0 +1,8 @@ 
+libc {
+  GLIBC_2.32 {
+    __mcount;
+  }
+  GLIBC_PRIVATE {
+    __syscall_error;
+  }
+}
diff --git a/sysdeps/arc/configure b/sysdeps/arc/configure
new file mode 100644
index 000000000000..5820017d6505
--- /dev/null
+++ b/sysdeps/arc/configure
@@ -0,0 +1,182 @@ 
+# This file is generated from configure.ac by Autoconf.  DO NOT EDIT!
+ # Local configure fragment for sysdeps/arc.
+
+$as_echo "#define PI_STATIC_AND_HIDDEN 1" >>confdefs.h
+
+libc_cv_have_sdata_section=no
+
+# For ARC, historically ; was used for comments and not newline
+# Later # also got added to comment list, but ; couldn't be switched to
+# canonical newline as there's lots of code out there which will break
+libc_cv_asm_line_sep='`'
+cat >>confdefs.h <<_ACEOF
+#define ASM_LINE_SEP $libc_cv_asm_line_sep
+_ACEOF
+
+
+# For big endian ABI, generate a symbol for selecting right dynamic linker
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for grep that handles long lines and -e" >&5
+$as_echo_n "checking for grep that handles long lines and -e... " >&6; }
+if ${ac_cv_path_GREP+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -z "$GREP"; then
+  ac_path_GREP_found=false
+  # Loop through the user's path and test for each of PROGNAME-LIST
+  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH$PATH_SEPARATOR/usr/xpg4/bin
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_prog in grep ggrep; do
+    for ac_exec_ext in '' $ac_executable_extensions; do
+      ac_path_GREP="$as_dir/$ac_prog$ac_exec_ext"
+      as_fn_executable_p "$ac_path_GREP" || continue
+# Check for GNU ac_path_GREP and select it if it is found.
+  # Check for GNU $ac_path_GREP
+case `"$ac_path_GREP" --version 2>&1` in
+*GNU*)
+  ac_cv_path_GREP="$ac_path_GREP" ac_path_GREP_found=:;;
+*)
+  ac_count=0
+  $as_echo_n 0123456789 >"conftest.in"
+  while :
+  do
+    cat "conftest.in" "conftest.in" >"conftest.tmp"
+    mv "conftest.tmp" "conftest.in"
+    cp "conftest.in" "conftest.nl"
+    $as_echo 'GREP' >> "conftest.nl"
+    "$ac_path_GREP" -e 'GREP$' -e '-(cannot match)-' < "conftest.nl" >"conftest.out" 2>/dev/null || break
+    diff "conftest.out" "conftest.nl" >/dev/null 2>&1 || break
+    as_fn_arith $ac_count + 1 && ac_count=$as_val
+    if test $ac_count -gt ${ac_path_GREP_max-0}; then
+      # Best one so far, save it but keep looking for a better one
+      ac_cv_path_GREP="$ac_path_GREP"
+      ac_path_GREP_max=$ac_count
+    fi
+    # 10*(2^10) chars as input seems more than enough
+    test $ac_count -gt 10 && break
+  done
+  rm -f conftest.in conftest.tmp conftest.nl conftest.out;;
+esac
+
+      $ac_path_GREP_found && break 3
+    done
+  done
+  done
+IFS=$as_save_IFS
+  if test -z "$ac_cv_path_GREP"; then
+    as_fn_error $? "no acceptable grep could be found in $PATH$PATH_SEPARATOR/usr/xpg4/bin" "$LINENO" 5
+  fi
+else
+  ac_cv_path_GREP=$GREP
+fi
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_path_GREP" >&5
+$as_echo "$ac_cv_path_GREP" >&6; }
+ GREP="$ac_cv_path_GREP"
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for egrep" >&5
+$as_echo_n "checking for egrep... " >&6; }
+if ${ac_cv_path_EGREP+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if echo a | $GREP -E '(a|b)' >/dev/null 2>&1
+   then ac_cv_path_EGREP="$GREP -E"
+   else
+     if test -z "$EGREP"; then
+  ac_path_EGREP_found=false
+  # Loop through the user's path and test for each of PROGNAME-LIST
+  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH$PATH_SEPARATOR/usr/xpg4/bin
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_prog in egrep; do
+    for ac_exec_ext in '' $ac_executable_extensions; do
+      ac_path_EGREP="$as_dir/$ac_prog$ac_exec_ext"
+      as_fn_executable_p "$ac_path_EGREP" || continue
+# Check for GNU ac_path_EGREP and select it if it is found.
+  # Check for GNU $ac_path_EGREP
+case `"$ac_path_EGREP" --version 2>&1` in
+*GNU*)
+  ac_cv_path_EGREP="$ac_path_EGREP" ac_path_EGREP_found=:;;
+*)
+  ac_count=0
+  $as_echo_n 0123456789 >"conftest.in"
+  while :
+  do
+    cat "conftest.in" "conftest.in" >"conftest.tmp"
+    mv "conftest.tmp" "conftest.in"
+    cp "conftest.in" "conftest.nl"
+    $as_echo 'EGREP' >> "conftest.nl"
+    "$ac_path_EGREP" 'EGREP$' < "conftest.nl" >"conftest.out" 2>/dev/null || break
+    diff "conftest.out" "conftest.nl" >/dev/null 2>&1 || break
+    as_fn_arith $ac_count + 1 && ac_count=$as_val
+    if test $ac_count -gt ${ac_path_EGREP_max-0}; then
+      # Best one so far, save it but keep looking for a better one
+      ac_cv_path_EGREP="$ac_path_EGREP"
+      ac_path_EGREP_max=$ac_count
+    fi
+    # 10*(2^10) chars as input seems more than enough
+    test $ac_count -gt 10 && break
+  done
+  rm -f conftest.in conftest.tmp conftest.nl conftest.out;;
+esac
+
+      $ac_path_EGREP_found && break 3
+    done
+  done
+  done
+IFS=$as_save_IFS
+  if test -z "$ac_cv_path_EGREP"; then
+    as_fn_error $? "no acceptable egrep could be found in $PATH$PATH_SEPARATOR/usr/xpg4/bin" "$LINENO" 5
+  fi
+else
+  ac_cv_path_EGREP=$EGREP
+fi
+
+   fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_path_EGREP" >&5
+$as_echo "$ac_cv_path_EGREP" >&6; }
+ EGREP="$ac_cv_path_EGREP"
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for big endian" >&5
+$as_echo_n "checking for big endian... " >&6; }
+if ${libc_cv_arc_be+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#ifdef __BIG_ENDIAN__
+                      yes
+                     #endif
+
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  $EGREP "yes" >/dev/null 2>&1; then :
+  libc_cv_arc_be=yes
+else
+  libc_cv_arc_be=no
+fi
+rm -f conftest*
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_arc_be" >&5
+$as_echo "$libc_cv_arc_be" >&6; }
+if test $libc_cv_arc_be = yes; then
+  # For shlib-versions.
+  $as_echo "#define HAVE_ARC_BE 1" >>confdefs.h
+
+  config_vars="$config_vars
+default-abi = ilp32_be"
+else
+  config_vars="$config_vars
+default-abi = ilp32"
+fi
diff --git a/sysdeps/arc/configure.ac b/sysdeps/arc/configure.ac
new file mode 100644
index 000000000000..d5bcd2a58cdc
--- /dev/null
+++ b/sysdeps/arc/configure.ac
@@ -0,0 +1,26 @@ 
+GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory.
+# Local configure fragment for sysdeps/arc.
+
+AC_DEFINE(PI_STATIC_AND_HIDDEN)
+libc_cv_have_sdata_section=no
+
+# For ARC, historically ; was used for comments and not newline
+# Later # also got added to comment list, but ; couldn't be switched to
+# canonical newline as there's lots of code out there which will break
+libc_cv_asm_line_sep='`'
+AC_DEFINE_UNQUOTED(ASM_LINE_SEP, $libc_cv_asm_line_sep)
+
+# For big endian ABI, generate a symbol for selecting right dynamic linker
+AC_CACHE_CHECK([for big endian],
+  [libc_cv_arc_be],
+  [AC_EGREP_CPP(yes,[#ifdef __BIG_ENDIAN__
+                      yes
+                     #endif
+  ], libc_cv_arc_be=yes, libc_cv_arc_be=no)])
+if test $libc_cv_arc_be = yes; then
+  # For shlib-versions.
+  AC_DEFINE(HAVE_ARC_BE)
+  LIBC_CONFIG_VAR([default-abi], [ilp32_be])
+else
+  LIBC_CONFIG_VAR([default-abi], [ilp32])
+fi
diff --git a/sysdeps/arc/nptl/Makefile b/sysdeps/arc/nptl/Makefile
new file mode 100644
index 000000000000..6f387c53905d
--- /dev/null
+++ b/sysdeps/arc/nptl/Makefile
@@ -0,0 +1,22 @@ 
+# NPTL makefile fragment for ARC.
+# Copyright (C) 2005-2020 Free Software Foundation, Inc.
+#
+# This file is part of the GNU C Library.
+#
+# The GNU C Library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2.1 of the License, or (at your option) any later version.
+#
+# The GNU C Library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with the GNU C Library.  If not, see
+# <https://www.gnu.org/licenses/>.
+
+ifeq ($(subdir),csu)
+gen-as-const-headers += tcb-offsets.sym
+endif
diff --git a/sysdeps/arc/preconfigure b/sysdeps/arc/preconfigure
new file mode 100644
index 000000000000..a79db0239ae6
--- /dev/null
+++ b/sysdeps/arc/preconfigure
@@ -0,0 +1,14 @@ 
+case "$machine" in
+arc*)
+  base_machine=arc
+  machine=arc
+
+  gccfloat=`$CC $CFLAGS $CPPFLAGS -E -dM -xc /dev/null | grep __ARC_FPU_| wc -l`
+  if test "$gccfloat" != "0"; then
+    with_fp_cond=1
+  else
+    with_fp_cond=0
+  fi
+  ;;
+
+esac
diff --git a/sysdeps/unix/sysv/linux/arc/Implies b/sysdeps/unix/sysv/linux/arc/Implies
new file mode 100644
index 000000000000..7f739a0340b6
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/arc/Implies
@@ -0,0 +1,3 @@ 
+arc/nptl
+unix/sysv/linux/generic/wordsize-32
+unix/sysv/linux/generic
diff --git a/sysdeps/unix/sysv/linux/arc/Makefile b/sysdeps/unix/sysv/linux/arc/Makefile
new file mode 100644
index 000000000000..7958625f6d5c
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/arc/Makefile
@@ -0,0 +1,29 @@ 
+ifeq ($(subdir),stdlib)
+gen-as-const-headers += ucontext_i.sym
+endif
+
+ifeq ($(subdir),signal)
+sysdep_routines += sigrestorer
+endif
+
+ifeq ($(subdir),misc)
+# MIPS/Tile-style cacheflush routine
+sysdep_headers += sys/cachectl.h
+sysdep_routines += cacheflush
+endif
+
+ifeq ($(subdir),elf)
+ifeq ($(build-shared),yes)
+# This is needed for DSO loading from static binaries.
+sysdep-dl-routines += dl-static
+endif
+endif
+
+abi-variants := ilp32 ilp32_be
+
+ifeq (,$(filter $(default-abi),$(abi-variants)))
+$(error Unknown ABI $(default-abi), must be one of $(abi-variants))
+endif
+
+abi-ilp32-condition	:= !defined __BIG_ENDIAN__
+abi-ilp32_be-condition	:= defined __BIG_ENDIAN__
diff --git a/sysdeps/unix/sysv/linux/arc/Versions b/sysdeps/unix/sysv/linux/arc/Versions
new file mode 100644
index 000000000000..292f1974b02a
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/arc/Versions
@@ -0,0 +1,16 @@ 
+ld {
+  GLIBC_PRIVATE {
+    # used for loading by static libraries
+    _dl_var_init;
+  }
+}
+libc {
+  GLIBC_2.32 {
+    _flush_cache;
+    cacheflush;
+  }
+  GLIBC_PRIVATE {
+    # A copy of sigaction lives in libpthread, and needs these.
+    __default_rt_sa_restorer;
+  }
+}
diff --git a/sysdeps/unix/sysv/linux/arc/configure b/sysdeps/unix/sysv/linux/arc/configure
new file mode 100644
index 000000000000..56ec14357507
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/arc/configure
@@ -0,0 +1,4 @@ 
+# This file is generated from configure.in by Autoconf.  DO NOT EDIT!
+ # Local configure fragment for sysdeps/unix/sysv/linux/arc.
+
+arch_minimum_kernel=5.1.0
diff --git a/sysdeps/unix/sysv/linux/arc/configure.ac b/sysdeps/unix/sysv/linux/arc/configure.ac
new file mode 100644
index 000000000000..8af5a12cc248
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/arc/configure.ac
@@ -0,0 +1,4 @@ 
+GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory.
+# Local configure fragment for sysdeps/unix/sysv/linux/arc.
+
+arch_minimum_kernel=5.1.0
diff --git a/sysdeps/unix/sysv/linux/arc/ldconfig.h b/sysdeps/unix/sysv/linux/arc/ldconfig.h
new file mode 100644
index 000000000000..4896ec005c8e
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/arc/ldconfig.h
@@ -0,0 +1,27 @@ 
+/* ldconfig default paths and libraries.  Linux/RISC-V version.
+   Copyright (C) 2001-2020 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#include <sysdeps/generic/ldconfig.h>
+
+#define SYSDEP_KNOWN_INTERPRETER_NAMES 		\
+  { "/lib/ld-linux-arc.so.2", FLAG_ELF_LIBC6 },	\
+  { "/lib/ld-linux-arceb.so.2", FLAG_ELF_LIBC6 },
+
+#define SYSDEP_KNOWN_LIBRARY_NAMES 	\
+  { "libc.so.6", FLAG_ELF_LIBC6 },	\
+  { "libm.so.6", FLAG_ELF_LIBC6 },
diff --git a/sysdeps/unix/sysv/linux/arc/shlib-versions b/sysdeps/unix/sysv/linux/arc/shlib-versions
new file mode 100644
index 000000000000..343c0a04500e
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/arc/shlib-versions
@@ -0,0 +1,7 @@ 
+DEFAULT                 GLIBC_2.32
+
+%ifdef HAVE_ARC_BE
+ld=ld-linux-arceb.so.2
+%else
+ld=ld-linux-arc.so.2
+%endif