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) 1995-2019 Free Software Foundation, Inc.
   5    Contributed by Eric Youngdale.
   6    Modified for stabs-in-ELF by H.J. Lu (hjl@lucon.org).
   7
   8 This file is part of GCC.
   9
  10 GCC is free software; you can redistribute it and/or modify
  11 it under the terms of the GNU General Public License as published by
  12 the Free Software Foundation; either version 3, or (at your option)
  13 any later version.
  14
  15 GCC is distributed in the hope that it will be useful,
  16 but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18 GNU General Public License for more details.
  19
  20 Under Section 7 of GPL version 3, you are granted additional
  21 permissions described in the GCC Runtime Library Exception, version
  22 3.1, as published by the Free Software Foundation.
  23
  24 You should have received a copy of the GNU General Public License and
  25 a copy of the GCC Runtime Library Exception along with this program;
  26 see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
  27 <http://www.gnu.org/licenses/>.  */
  28
  29 #undef ASM_APP_ON
  30 #define ASM_APP_ON "#APP\n"
  31
  32 #undef ASM_APP_OFF
  33 #define ASM_APP_OFF "#NO_APP\n"
  34
  35 #if ENABLE_OFFLOADING == 1
  36 #define CRTOFFLOADBEGIN "%{fopenacc|fopenmp:crtoffloadbegin%O%s}"
  37 #define CRTOFFLOADEND "%{fopenacc|fopenmp:crtoffloadend%O%s}"
  38 #else
  39 #define CRTOFFLOADBEGIN ""
  40 #define CRTOFFLOADEND ""
  41 #endif
  42
  43 #define GNU_USER_TARGET_CRTI "crti.o%s"
  44 #define GNU_USER_TARGET_CRTN "crtn.o%s"
  45
  46 /* Provide a STARTFILE_SPEC appropriate for GNU userspace.  Here we add
  47    the GNU userspace magical crtbegin.o file (see crtstuff.c) which
  48    provides part of the support for getting C++ file-scope static
  49    object constructed before entering `main'.  */
  50
  51 #define GNU_USER_TARGET_STARTFILE_SPEC \
  52   "%{shared:; \
  53      pg|p|profile:%{static-pie:grcrt1.o%s;:gcrt1.o%s}; \
  54      static:crt1.o%s; \
  55      static-pie:rcrt1.o%s; \
  56      " PIE_SPEC ":Scrt1.o%s; \
  57      :crt1.o%s} " \
  58    GNU_USER_TARGET_CRTI " \
  59    %{static:crtbeginT.o%s; \
  60      shared|static-pie|" PIE_SPEC ":crtbeginS.o%s; \
  61      :crtbegin.o%s} \
  62    %{fvtable-verify=none:%s; \
  63      fvtable-verify=preinit:vtv_start_preinit.o%s; \
  64      fvtable-verify=std:vtv_start.o%s} " \
  65    CRTOFFLOADBEGIN
  66 #undef  STARTFILE_SPEC
  67 #define STARTFILE_SPEC GNU_USER_TARGET_STARTFILE_SPEC
  68
  69 /* Provide a ENDFILE_SPEC appropriate for GNU userspace.  Here we tack on
  70    the GNU userspace magical crtend.o file (see crtstuff.c) which
  71    provides part of the support for getting C++ file-scope static
  72    object constructed before entering `main', followed by a normal
  73    GNU userspace "finalizer" file, `crtn.o'.  */
  74
  75 #define GNU_USER_TARGET_ENDFILE_SPEC \
  76   "%{fvtable-verify=none:%s; \
  77      fvtable-verify=preinit:vtv_end_preinit.o%s; \
  78      fvtable-verify=std:vtv_end.o%s} \
  79    %{static:crtend.o%s; \
  80      shared|static-pie|" PIE_SPEC ":crtendS.o%s; \
  81      :crtend.o%s} " \
  82    GNU_USER_TARGET_CRTN " " \
  83    CRTOFFLOADEND
  84 #undef  ENDFILE_SPEC
  85 #define ENDFILE_SPEC GNU_USER_TARGET_ENDFILE_SPEC
  86
  87 /* This is for -profile to use -lc_p instead of -lc.  */
  88 #define GNU_USER_TARGET_CC1_SPEC "%{profile:-p}"
  89 #ifndef CC1_SPEC
  90 #define CC1_SPEC GNU_USER_TARGET_CC1_SPEC
  91 #endif
  92
  93 /* The GNU C++ standard library requires that these macros be defined.  */
  94 #undef CPLUSPLUS_CPP_SPEC
  95 #define CPLUSPLUS_CPP_SPEC "-D_GNU_SOURCE %(cpp)"
  96
  97 #define GNU_USER_TARGET_NO_PTHREADS_LIB_SPEC \
  98   "%{shared:-lc} \
  99    %{!shared:%{profile:-lc_p}%{!profile:-lc}}"
 100
 101 #define GNU_USER_TARGET_LIB_SPEC \
 102   "%{pthread:-lpthread} " \
 103   GNU_USER_TARGET_NO_PTHREADS_LIB_SPEC
 104
 105 #undef  LIB_SPEC
 106 #define LIB_SPEC GNU_USER_TARGET_LIB_SPEC
 107
 108 #if defined(HAVE_LD_EH_FRAME_HDR)
 109 #define LINK_EH_SPEC "%{!static|static-pie:--eh-frame-hdr} "
 110 #endif
 111
 112 #define GNU_USER_TARGET_LINK_GCC_C_SEQUENCE_SPEC \
 113   "%{static|static-pie:--start-group} %G %{!nolibc:%L} \
 114    %{static|static-pie:--end-group}%{!static:%{!static-pie:%G}}"
 115
 116 #undef LINK_GCC_C_SEQUENCE_SPEC
 117 #define LINK_GCC_C_SEQUENCE_SPEC GNU_USER_TARGET_LINK_GCC_C_SEQUENCE_SPEC
 118
 119 /* Use --as-needed -lgcc_s for eh support.  */
 120 #ifdef HAVE_LD_AS_NEEDED
 121 #define USE_LD_AS_NEEDED 1
 122 #endif
 123
 124 #define TARGET_POSIX_IO
 125
 126 #undef TARGET_LIBC_HAS_FUNCTION
 127 #define TARGET_LIBC_HAS_FUNCTION gnu_libc_has_function
 128
 129 /* Link -lasan early on the command line.  For -static-libasan, don't link
 130    it for -shared link, the executable should be compiled with -static-libasan
 131    in that case, and for executable link with --{,no-}whole-archive around
 132    it to force everything into the executable.  And similarly for -ltsan
 133    and -llsan.  */
 134 #if defined(HAVE_LD_STATIC_DYNAMIC)
 135 #undef LIBASAN_EARLY_SPEC
 136 #define LIBASAN_EARLY_SPEC "%{!shared:libasan_preinit%O%s} " \
 137   "%{static-libasan:%{!shared:" \
 138   LD_STATIC_OPTION " --whole-archive -lasan --no-whole-archive " \
 139   LD_DYNAMIC_OPTION "}}%{!static-libasan:-lasan}"
 140 #undef LIBTSAN_EARLY_SPEC
 141 #define LIBTSAN_EARLY_SPEC "%{!shared:libtsan_preinit%O%s} " \
 142   "%{static-libtsan:%{!shared:" \
 143   LD_STATIC_OPTION " --whole-archive -ltsan --no-whole-archive " \
 144   LD_DYNAMIC_OPTION "}}%{!static-libtsan:-ltsan}"
 145 #undef LIBLSAN_EARLY_SPEC
 146 #define LIBLSAN_EARLY_SPEC "%{!shared:liblsan_preinit%O%s} " \
 147   "%{static-liblsan:%{!shared:" \
 148   LD_STATIC_OPTION " --whole-archive -llsan --no-whole-archive " \
 149   LD_DYNAMIC_OPTION "}}%{!static-liblsan:-llsan}"
 150 #endif
 151
 152 #undef TARGET_F951_OPTIONS
 153 #define TARGET_F951_OPTIONS "%{!nostdinc:\
 154   %:fortran-preinclude-file(-fpre-include= math-vector-fortran.h)}"