PR39570 (gfortran) cabs and cabsf are named differently on NetBSD 5

["Kai-Uwe Eckhardt" <kuehro at gmx dot de>]

I have used the darwin files as templates and made the necessary changes. 
It reduces test failures from over 15000 (all run tests) to 27 in 3 files
(patch for PR 48244 applied as well) on NetBSD 7.0 amd64.

--- /dev/null	2014-12-15 07:13:57.000000000 +0000
+++ gcc/config/netbsd-protos.h
@@ -0,0 +1,29 @@
+/* Prototypes.
+   Copyright (C) 2001-2014 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/>.  */
+
+#ifndef _NETBSD_PROTOS_H_
+#define _NETBSD_PROTOS_H_
+
+double __c99_cabs (double complex);
+float __c99_cabsf (float complex);
+long double __c99_cabsl (long double complex);
+
+void netbsd_patch_builtins (void);
+
+#endif /* _NETBSD_PROTOS_H_ */


--- /dev/null	2014-12-17 06:10:54.000000000 +0000
+++ gcc/config/netbsd.c
@@ -0,0 +1,106 @@
+/* Functions for generic NetBSD as target machine for GNU C compiler.
+   Copyright (C) 1989-2014 Free Software Foundation, Inc.
+   Contributed by Apple Computer 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 "rtl.h"
+#include "regs.h"
+#include "hard-reg-set.h"
+#include "insn-config.h"
+#include "conditions.h"
+#include "insn-flags.h"
+#include "output.h"
+#include "insn-attr.h"
+#include "flags.h"
+#include "tree.h"
+#include "stringpool.h"
+#include "varasm.h"
+#include "stor-layout.h"
+#include "expr.h"
+#include "reload.h"
+#include "hashtab.h"
+#include "hash-set.h"
+#include "vec.h"
+#include "machmode.h"
+#include "input.h"
+#include "function.h"
+#include "ggc.h"
+#include "langhooks.h"
+#include "target.h"
+#include "tm_p.h"
+#include "diagnostic-core.h"
+#include "toplev.h"
+#include "dominance.h"
+#include "cfg.h"
+#include "cfgrtl.h"
+#include "cfganal.h"
+#include "lcm.h"
+#include "cfgbuild.h"
+#include "cfgcleanup.h"
+#include "predict.h"
+#include "basic-block.h"
+#include "df.h"
+#include "debug.h"
+#include "obstack.h"
+#include "hash-table.h"
+#include "tree-ssa-alias.h"
+#include "internal-fn.h"
+#include "gimple-fold.h"
+#include "tree-eh.h"
+#include "gimple-expr.h"
+#include "is-a.h"
+#include "gimple.h"
+#include "gimplify.h"
+#include "hash-map.h"
+#include "plugin-api.h"
+#include "ipa-ref.h"
+#include "cgraph.h"
+#include "lto-streamer.h"
+#include "lto-section-names.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.orig	2014-01-02 22:23:26.000000000 +0000
+++ gcc/config/netbsd.h
@@ -17,6 +17,9 @@ You should have received a copy of the G
 along with GCC; see the file COPYING3.  If not see
 <http://www.gnu.org/licenses/>.  */
 
+
+#include "netbsd-protos.h"
+
 /* TARGET_OS_CPP_BUILTINS() common to all NetBSD targets.  */
 #define NETBSD_OS_CPP_BUILTINS_COMMON()		\
   do						\
@@ -175,3 +178,9 @@ along with GCC; see the file COPYING3.  
 
 #undef WINT_TYPE
 #define WINT_TYPE "int"
+
+#undef SUBTARGET_INIT_BUILTINS
+#define SUBTARGET_INIT_BUILTINS			\
+do {						\
+  netbsd_patch_builtins ();			\
+} while(0)


--- /dev/null	2014-12-16 20:23:05.000000000 +0000
+++ gcc/config/t-netbsd
@@ -0,0 +1,23 @@
+# Copyright (C) 2002-2014 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)
+