re PR target/39570 (cabs and cabsf are named differently on NetBSD 5)

2017-09-26  Krister Walfridsson  <krister.walfridsson@gmail.com>

	PR target/39570
	* gcc/config/netbsd-protos.h: New file.
	* gcc/config/netbsd.c: New file.
	* gcc/config/netbsd.h (SUBTARGET_INIT_BUILTINS): Define.
	* gcc/config/t-netbsd: New file.
	* gcc/config.gcc (tm_p_file): Add netbsd-protos.h.
	(tmake_file) Add t-netbsd.
	(extra_objs) Add netbsd.o.

From-SVN: r253216

gcc/ChangeLog

+2017-09-26  Krister Walfridsson  <krister.walfridsson@gmail.com>
+
+	PR target/39570
+	* gcc/config/netbsd-protos.h: New file.
+	* gcc/config/netbsd.c: New file.
+	* gcc/config/netbsd.h (SUBTARGET_INIT_BUILTINS): Define.
+	* gcc/config/t-netbsd: New file.
+	* gcc/config.gcc (tm_p_file): Add netbsd-protos.h.
+	(tmake_file) Add t-netbsd.
+	(extra_objs) Add netbsd.o.
+
 2017-09-26  Janus Weil  <janus@gcc.gnu.org>
 
 	PR fortran/82143

gcc/config.gcc

@@ -792,7 +792,9 @@ case ${target} in
   target_has_targetcm=yes
   ;;
 *-*-netbsd*)
-  tmake_file="t-slibgcc"
+  tm_p_file="${tm_p_file} netbsd-protos.h"
+  tmake_file="t-netbsd t-slibgcc"
+  extra_objs="${extra_objs} netbsd.o"
   gas=yes
   gnu_ld=yes
   use_gcc_stdint=wrap

gcc/config/netbsd-protos.h

+/* Prototypes.
+   Copyright (C) 2017 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/>.  */
+
+extern void netbsd_patch_builtins (void);

gcc/config/netbsd.c

+/* Functions for generic NetBSD as target machine for GNU C compiler.
+   Copyright (C) 2017 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/>.  */
+
+#include "config.h"
+#include "system.h"
+#include "coretypes.h"
+#include "tm.h"
+#include "tree.h"
+#include "varasm.h"
+#include "netbsd-protos.h"
+
+static void
+netbsd_patch_builtin (enum built_in_function fncode)
+{
+  tree fn = builtin_decl_explicit (fncode);
+  tree sym;
+  char *newname;
+
+  if (!fn)
+    return;
+
+  sym = DECL_ASSEMBLER_NAME (fn);
+  newname = ACONCAT (("__c99_", IDENTIFIER_POINTER (sym), NULL));
+
+  set_user_assembler_name (fn, newname);
+
+  fn = builtin_decl_implicit (fncode);
+  if (fn)
+    set_user_assembler_name (fn, newname);
+}
+
+void
+netbsd_patch_builtins (void)
+{
+  netbsd_patch_builtin (BUILT_IN_CABSF);
+  netbsd_patch_builtin (BUILT_IN_CABS);
+  netbsd_patch_builtin (BUILT_IN_CABSL);
+}

gcc/config/netbsd.h

@@ -164,3 +164,9 @@ along with GCC; see the file COPYING3.  If not see
 
 #undef WINT_TYPE
 #define WINT_TYPE "int"
+
+#undef  SUBTARGET_INIT_BUILTINS
+#define SUBTARGET_INIT_BUILTINS						\
+  do {									\
+    netbsd_patch_builtins ();						\
+  } while(0)

gcc/config/t-netbsd

+# Copyright (C) 2017 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/>.
+
+netbsd.o: $(srcdir)/config/netbsd.c
+	$(COMPILE) $<
+	$(POSTCOMPILE)