[PATCH 3/3] gcc: xtensa: add xtensa*-esp*-elf multilib

[Alexey Lapshin <alexey.lapshin@espressif.com>]

gcc/
        * config.gcc: Add xtensa*-esp*-elf target.
        * config/xtensa/t-esp-multilib: New file.
---
 gcc/config.gcc                   |  6 ++++++
 gcc/config/xtensa/t-esp-multilib | 20 ++++++++++++++++++++
 2 files changed, 26 insertions(+)
 create mode 100644 gcc/config/xtensa/t-esp-multilib

diff --git a/gcc/config.gcc b/gcc/config.gcc
index 6fd1594480a..f972c71a0b2 100644
--- a/gcc/config.gcc
+++ b/gcc/config.gcc
@@ -3512,6 +3512,12 @@ xstormy16-*-elf)
 xtensa*-*-elf*)
 	tm_file="${tm_file} elfos.h newlib-stdint.h xtensa/elf.h"
 	extra_options="${extra_options} xtensa/elf.opt"
+	tmake_file="${tmake_file} xtensa/t-xtensa"
+	case ${target} in
+	xtensa*-esp-elf*)
+		tmake_file="${tmake_file} xtensa/t-esp-multilib"
+		;;
+	esac
 	;;
 xtensa*-*-linux*)
 	tm_file="${tm_file} elfos.h gnu-user.h linux.h glibc-stdint.h xtensa/linux.h"
diff --git a/gcc/config/xtensa/t-esp-multilib b/gcc/config/xtensa/t-esp-multilib
new file mode 100644
index 00000000000..dfc0ac0e04c
--- /dev/null
+++ b/gcc/config/xtensa/t-esp-multilib
@@ -0,0 +1,20 @@
+# Copyright (C) 2023 Free Software Foundation, Inc.
+#
+# This file is part of GCC.
+#
+# GCC is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3, or (at your option)
+# any later version.
+#
+# GCC 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 General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with GCC; see the file COPYING3.  If not see
+# <http://www.gnu.org/licenses/>.
+
+MULTILIB_OPTIONS = mdynconfig=xtensa_esp32.so/mdynconfig=xtensa_esp32s2.so/mdynconfig=xtensa_esp32s3.so fno-rtti
+MULTILIB_DIRNAMES = esp32 esp32s2 esp32s3 no-rtti
-- 
2.34.1