2010-04-09 Steve Ellcey <sje@cup.hp.com>

[pf3gnuchains/gcc-fork.git] / gcc / config / linux.h

diff --git a/gcc/config/linux.h b/gcc/config/linux.h
index d452726..e567e9a 100644 (file)
--- a/gcc/config/linux.h
+++ b/gcc/config/linux.h
@@ -1,6 +1,6 @@
 /* Definitions for Linux-based GNU systems with ELF format
-   Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2003, 2004
-   Free Software Foundation, Inc.
+   Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2003, 2004, 2005, 2006,
+   2007, 2009 Free Software Foundation, Inc.
    Contributed by Eric Youngdale.
    Modified for stabs-in-ELF by H.J. Lu (hjl@lucon.org).
 
@@ -8,7 +8,7 @@ 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 2, or (at your option)
+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,
@@ -16,10 +16,14 @@ 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 COPYING.  If not, write to
-the Free Software Foundation, 51 Franklin Street, Fifth Floor,
-Boston, MA 02110-1301, USA.  */
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+<http://www.gnu.org/licenses/>.  */
 
 /* Don't assume anything about the header files.  */
 #define NO_IMPLICIT_EXTERN_C
@@ -91,6 +95,7 @@ Boston, MA 02110-1301, USA.  */
 /* Define this so we can compile MS code for use with WINE.  */
 #define HANDLE_PRAGMA_PACK_PUSH_POP
 
+#undef LINK_GCC_C_SEQUENCE_SPEC
 #define LINK_GCC_C_SEQUENCE_SPEC \
   "%{static:--start-group} %G %L %{static:--end-group}%{!static:%G}"
 
@@ -99,8 +104,34 @@ Boston, MA 02110-1301, USA.  */
 #define USE_LD_AS_NEEDED 1
 #endif
 
+/* Determine which dynamic linker to use depending on whether GLIBC or
+   uClibc is the default C library and whether -muclibc or -mglibc has
+   been passed to change the default.  */
+#if UCLIBC_DEFAULT
+#define CHOOSE_DYNAMIC_LINKER(G, U) "%{mglibc:%{muclibc:%e-mglibc and -muclibc used together}" G ";:" U "}"
+#else
+#define CHOOSE_DYNAMIC_LINKER(G, U) "%{muclibc:%{mglibc:%e-mglibc and -muclibc used together}" U ";:" G "}"
+#endif
+
+/* For most targets the following definitions suffice;
+   GLIBC_DYNAMIC_LINKER must be defined for each target using them, or
+   GLIBC_DYNAMIC_LINKER32 and GLIBC_DYNAMIC_LINKER64 for targets
+   supporting both 32-bit and 64-bit compilation.  */
+#define UCLIBC_DYNAMIC_LINKER "/lib/ld-uClibc.so.0"
+#define UCLIBC_DYNAMIC_LINKER32 "/lib/ld-uClibc.so.0"
+#define UCLIBC_DYNAMIC_LINKER64 "/lib/ld64-uClibc.so.0"
+#define LINUX_DYNAMIC_LINKER \
+  CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER)
+#define LINUX_DYNAMIC_LINKER32 \
+  CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32)
+#define LINUX_DYNAMIC_LINKER64 \
+  CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64)
+
 /* Determine whether the entire c99 runtime
    is present in the runtime library.  */
-#define TARGET_C99_FUNCTIONS 1
+#define TARGET_C99_FUNCTIONS (OPTION_GLIBC)
+
+/* Whether we have sincos that follows the GNU extension.  */
+#define TARGET_HAS_SINCOS (OPTION_GLIBC)
 
 #define TARGET_POSIX_IO