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[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [gcc/] [config/] [linux.h] - Blame information for rev 709

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1 709 jeremybenn
/* Definitions for systems using the Linux kernel, with or without
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   MMU, using ELF at the compiler level but possibly FLT for final
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   linked executables and shared libraries in some no-MMU cases, and
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   possibly with a choice of libc implementations.
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   Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2003, 2004, 2005, 2006,
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   2007, 2009, 2010, 2011 Free Software Foundation, Inc.
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   Contributed by Eric Youngdale.
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   Modified for stabs-in-ELF by H.J. Lu (hjl@lucon.org).
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3, or (at your option)
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any later version.
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GCC is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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GNU General Public License for more details.
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Under Section 7 of GPL version 3, you are granted additional
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permissions described in the GCC Runtime Library Exception, version
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3.1, as published by the Free Software Foundation.
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You should have received a copy of the GNU General Public License and
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a copy of the GCC Runtime Library Exception along with this program;
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see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
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<http://www.gnu.org/licenses/>.  */
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/* C libraries supported on Linux.  */
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#ifdef SINGLE_LIBC
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#define OPTION_GLIBC  (DEFAULT_LIBC == LIBC_GLIBC)
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#define OPTION_UCLIBC (DEFAULT_LIBC == LIBC_UCLIBC)
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#define OPTION_BIONIC (DEFAULT_LIBC == LIBC_BIONIC)
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#else
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#define OPTION_GLIBC  (linux_libc == LIBC_GLIBC)
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#define OPTION_UCLIBC (linux_libc == LIBC_UCLIBC)
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#define OPTION_BIONIC (linux_libc == LIBC_BIONIC)
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#endif
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#define GNU_USER_TARGET_OS_CPP_BUILTINS()                       \
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    do {                                                        \
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        if (OPTION_GLIBC)                                       \
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          builtin_define ("__gnu_linux__");                     \
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        builtin_define_std ("linux");                           \
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        builtin_define_std ("unix");                            \
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        builtin_assert ("system=linux");                        \
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        builtin_assert ("system=unix");                         \
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        builtin_assert ("system=posix");                        \
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    } while (0)
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/* Determine which dynamic linker to use depending on whether GLIBC or
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   uClibc or Bionic is the default C library and whether
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   -muclibc or -mglibc or -mbionic has been passed to change the default.  */
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#define CHOOSE_DYNAMIC_LINKER1(LIBC1, LIBC2, LIBC3, LD1, LD2, LD3)      \
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  "%{" LIBC2 ":" LD2 ";:%{" LIBC3 ":" LD3 ";:" LD1 "}}"
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#if DEFAULT_LIBC == LIBC_GLIBC
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#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
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  CHOOSE_DYNAMIC_LINKER1 ("mglibc", "muclibc", "mbionic", G, U, B)
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#elif DEFAULT_LIBC == LIBC_UCLIBC
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#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
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  CHOOSE_DYNAMIC_LINKER1 ("muclibc", "mglibc", "mbionic", U, G, B)
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#elif DEFAULT_LIBC == LIBC_BIONIC
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#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
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  CHOOSE_DYNAMIC_LINKER1 ("mbionic", "mglibc", "muclibc", B, G, U)
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#else
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#error "Unsupported DEFAULT_LIBC"
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#endif /* DEFAULT_LIBC */
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/* For most targets the following definitions suffice;
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   GLIBC_DYNAMIC_LINKER must be defined for each target using them, or
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   GLIBC_DYNAMIC_LINKER32 and GLIBC_DYNAMIC_LINKER64 for targets
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   supporting both 32-bit and 64-bit compilation.  */
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#define UCLIBC_DYNAMIC_LINKER "/lib/ld-uClibc.so.0"
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#define UCLIBC_DYNAMIC_LINKER32 "/lib/ld-uClibc.so.0"
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#define UCLIBC_DYNAMIC_LINKER64 "/lib/ld64-uClibc.so.0"
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#define UCLIBC_DYNAMIC_LINKERX32 "/lib/ldx32-uClibc.so.0"
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#define BIONIC_DYNAMIC_LINKER "/system/bin/linker"
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#define BIONIC_DYNAMIC_LINKER32 "/system/bin/linker"
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#define BIONIC_DYNAMIC_LINKER64 "/system/bin/linker64"
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#define BIONIC_DYNAMIC_LINKERX32 "/system/bin/linkerx32"
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#define GNU_USER_DYNAMIC_LINKER                                         \
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  CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER,   \
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                         BIONIC_DYNAMIC_LINKER)
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#define GNU_USER_DYNAMIC_LINKER32                                       \
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  CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32, \
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                         BIONIC_DYNAMIC_LINKER32)
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#define GNU_USER_DYNAMIC_LINKER64                                       \
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  CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64, \
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                         BIONIC_DYNAMIC_LINKER64)
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#define GNU_USER_DYNAMIC_LINKERX32                                      \
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  CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKERX32, UCLIBC_DYNAMIC_LINKERX32, \
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                         BIONIC_DYNAMIC_LINKERX32)
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/* Determine whether the entire c99 runtime
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   is present in the runtime library.  */
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#undef TARGET_C99_FUNCTIONS
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#define TARGET_C99_FUNCTIONS (OPTION_GLIBC)
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/* Whether we have sincos that follows the GNU extension.  */
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#undef TARGET_HAS_SINCOS
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#define TARGET_HAS_SINCOS (OPTION_GLIBC || OPTION_BIONIC)

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