[gcc r14-4200] rust: Implement TARGET_RUST_OS_INFO for *-*-freebsd*

[gcc r14-4200] rust: Implement TARGET_RUST_OS_INFO for *-*-freebsd*

[Arthur Cohen]

https://gcc.gnu.org/g:57e2c3ecfa4dea3db8812177c33ac9c7106d8ccf

commit r14-4200-g57e2c3ecfa4dea3db8812177c33ac9c7106d8ccf
Author: Iain Buclaw <ibuclaw@gdcproject.org>
Date:   Thu Oct 13 09:37:40 2022 +0200

    rust: Implement TARGET_RUST_OS_INFO for *-*-freebsd*
    
    gcc/ChangeLog:
    
            * config.gcc (*-*-freebsd*): Set rust_target_objs and
            target_has_targetrustm.
            * config/t-freebsd (freebsd-rust.o): New rule.
            * config/freebsd-rust.cc: New file.

Diff:
---
 gcc/config.gcc             |  2 ++
 gcc/config/freebsd-rust.cc | 40 ++++++++++++++++++++++++++++++++++++++++
 gcc/config/t-freebsd       |  4 ++++
 3 files changed, 46 insertions(+)

diff --git a/gcc/config.gcc b/gcc/config.gcc
index 01e302f9b14..544682896c6 100644
--- a/gcc/config.gcc
+++ b/gcc/config.gcc
@@ -865,6 +865,8 @@ case ${target} in
   d_target_objs="${d_target_objs} freebsd-d.o"
   tmake_file="${tmake_file} t-freebsd"
   target_has_targetdm=yes
+  rust_target_objs="${rust_target_objs} freebsd-rust.o"
+  target_has_targetrustm=yes
   ;;
 *-*-fuchsia*)
   native_system_header_dir=/include
diff --git a/gcc/config/freebsd-rust.cc b/gcc/config/freebsd-rust.cc
new file mode 100644
index 00000000000..1dbf2ed8ef9
--- /dev/null
+++ b/gcc/config/freebsd-rust.cc
@@ -0,0 +1,40 @@
+/* FreeBSD support needed only by Rust front-end.
+   Copyright (C) 2022 Free Software Foundation, Inc.
+
+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/>.  */
+
+#include "config.h"
+#include "system.h"
+#include "coretypes.h"
+#include "tm.h"
+#include "tm_rust.h"
+#include "rust/rust-target.h"
+#include "rust/rust-target-def.h"
+
+/* Implement TARGET_RUST_OS_INFO for FreeBSD targets.  */
+
+static void
+freebsd_rust_target_os_info (void)
+{
+  rust_add_target_info ("target_family", "unix");
+  rust_add_target_info ("target_os", "freebsd");
+  rust_add_target_info ("target_vendor", "unknown");
+  rust_add_target_info ("target_env", "");
+}
+
+#undef TARGET_RUST_OS_INFO
+#define TARGET_RUST_OS_INFO freebsd_rust_target_os_info
+
+struct gcc_targetrustm targetrustm = TARGETRUSTM_INITIALIZER;
diff --git a/gcc/config/t-freebsd b/gcc/config/t-freebsd
index fb36685653a..d4b4615e567 100644
--- a/gcc/config/t-freebsd
+++ b/gcc/config/t-freebsd
@@ -19,3 +19,7 @@
 freebsd-d.o: $(srcdir)/config/freebsd-d.cc
 	$(COMPILE) $<
 	$(POSTCOMPILE)
+
+freebsd-rust.o: $(srcdir)/config/freebsd-rust.cc
+	$(COMPILE) $<
+	$(POSTCOMPILE)