gcc/config/gnu-user.h

   1 /* Definitions for systems using, at least optionally, a GNU
   2    (glibc-based) userspace or other userspace with libc derived from
   3    glibc (e.g. uClibc) or for which similar specs are appropriate.
   4    Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2003, 2004, 2005, 2006,
   5    2007, 2009, 2010, 2011 Free Software Foundation, Inc.
   6    Contributed by Eric Youngdale.
   7    Modified for stabs-in-ELF by H.J. Lu (hjl@lucon.org).
   8
   9 This file is part of GCC.
  10
  11 GCC is free software; you can redistribute it and/or modify
  12 it under the terms of the GNU General Public License as published by
  13 the Free Software Foundation; either version 3, or (at your option)
  14 any later version.
  15
  16 GCC is distributed in the hope that it will be useful,
  17 but WITHOUT ANY WARRANTY; without even the implied warranty of
  18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19 GNU General Public License for more details.
  20
  21 Under Section 7 of GPL version 3, you are granted additional
  22 permissions described in the GCC Runtime Library Exception, version
  23 3.1, as published by the Free Software Foundation.
  24
  25 You should have received a copy of the GNU General Public License and
  26 a copy of the GCC Runtime Library Exception along with this program;
  27 see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
  28 <http://www.gnu.org/licenses/>.  */
  29
  30 /* Don't assume anything about the header files.  */
  31 #define NO_IMPLICIT_EXTERN_C
  32
  33 #undef ASM_APP_ON
  34 #define ASM_APP_ON "#APP\n"
  35
  36 #undef ASM_APP_OFF
  37 #define ASM_APP_OFF "#NO_APP\n"
  38
  39 /* Provide a STARTFILE_SPEC appropriate for GNU userspace.  Here we add
  40    the GNU userspace magical crtbegin.o file (see crtstuff.c) which
  41    provides part of the support for getting C++ file-scope static
  42    object constructed before entering `main'.  */
  43
  44 #if defined HAVE_LD_PIE
  45 #define GNU_USER_TARGET_STARTFILE_SPEC \
  46   "%{!shared: %{pg|p|profile:gcrt1.o%s;pie:Scrt1.o%s;:crt1.o%s}} \
  47    crti.o%s %{static:crtbeginT.o%s;shared|pie:crtbeginS.o%s;:crtbegin.o%s}"
  48 #else
  49 #define GNU_USER_TARGET_STARTFILE_SPEC \
  50   "%{!shared: %{pg|p|profile:gcrt1.o%s;:crt1.o%s}} \
  51    crti.o%s %{static:crtbeginT.o%s;shared|pie:crtbeginS.o%s;:crtbegin.o%s}"
  52 #endif
  53 #undef  STARTFILE_SPEC
  54 #define STARTFILE_SPEC GNU_USER_TARGET_STARTFILE_SPEC
  55
  56 /* Provide a ENDFILE_SPEC appropriate for GNU userspace.  Here we tack on
  57    the GNU userspace magical crtend.o file (see crtstuff.c) which
  58    provides part of the support for getting C++ file-scope static
  59    object constructed before entering `main', followed by a normal
  60    GNU userspace "finalizer" file, `crtn.o'.  */
  61
  62 #define GNU_USER_TARGET_ENDFILE_SPEC \
  63   "%{shared|pie:crtendS.o%s;:crtend.o%s} crtn.o%s"
  64 #undef  ENDFILE_SPEC
  65 #define ENDFILE_SPEC GNU_USER_TARGET_ENDFILE_SPEC
  66
  67 /* This is for -profile to use -lc_p instead of -lc.  */
  68 #define GNU_USER_TARGET_CC1_SPEC "%{profile:-p}"
  69 #ifndef CC1_SPEC
  70 #define CC1_SPEC GNU_USER_TARGET_CC1_SPEC
  71 #endif
  72
  73 /* The GNU C++ standard library requires that these macros be defined.  */
  74 #undef CPLUSPLUS_CPP_SPEC
  75 #define CPLUSPLUS_CPP_SPEC "-D_GNU_SOURCE %(cpp)"
  76
  77 #define GNU_USER_TARGET_LIB_SPEC \
  78   "%{pthread:-lpthread} \
  79    %{shared:-lc} \
  80    %{!shared:%{mieee-fp:-lieee} %{profile:-lc_p}%{!profile:-lc}}"
  81 #undef  LIB_SPEC
  82 #define LIB_SPEC GNU_USER_TARGET_LIB_SPEC
  83
  84 #if defined(HAVE_LD_EH_FRAME_HDR)
  85 #define LINK_EH_SPEC "%{!static:--eh-frame-hdr} "
  86 #endif
  87
  88 #undef LINK_GCC_C_SEQUENCE_SPEC
  89 #define LINK_GCC_C_SEQUENCE_SPEC \
  90   "%{static:--start-group} %G %L %{static:--end-group}%{!static:%G}"
  91
  92 /* Use --as-needed -lgcc_s for eh support.  */
  93 #ifdef HAVE_LD_AS_NEEDED
  94 #define USE_LD_AS_NEEDED 1
  95 #endif
  96
  97 #define TARGET_POSIX_IO
  98
  99 #define TARGET_C99_FUNCTIONS 1
 100 #define TARGET_HAS_SINCOS 1