gcc/config/dragonfly.h

   1 /* Base configuration file for all DragonFly targets.
   2    Copyright (C) 2014-2015 Free Software Foundation, Inc.
   3    Contributed by John Marino <gnugcc@marino.st>
   4
   5 This file is part of GCC.
   6
   7 GCC is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 3, or (at your option)
  10 any later version.
  11
  12 GCC is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 Under Section 7 of GPL version 3, you are granted additional
  18 permissions described in the GCC Runtime Library Exception, version
  19 3.1, as published by the Free Software Foundation.
  20
  21 You should have received a copy of the GNU General Public License and
  22 a copy of the GCC Runtime Library Exception along with this program;
  23 see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
  24 <http://www.gnu.org/licenses/>.  */
  25
  26 #undef  TARGET_OS_CPP_BUILTINS
  27 #define TARGET_OS_CPP_BUILTINS()            \
  28   do                                        \
  29     {                                       \
  30        builtin_define_std ("unix");         \
  31        builtin_define ("__DragonFly__");    \
  32        builtin_assert ("system=unix");      \
  33        builtin_assert ("system=bsd");       \
  34        builtin_assert ("system=DragonFly"); \
  35     }                                       \
  36   while (0)
  37
  38 #undef  CPP_SPEC
  39 #define CPP_SPEC \
  40  "%(cpp_cpu) %(cpp_arch) %{posix:-D_POSIX_SOURCE}"
  41
  42 #undef  STARTFILE_SPEC
  43 #define STARTFILE_SPEC  \
  44   "%{!shared: \
  45      %{pg:gcrt1.o%s} \
  46      %{!pg: \
  47        %{p:gcrt1.o%s} \
  48        %{!p: \
  49          %{profile: gcrt1.o%s} \
  50          %{!profile: \
  51            %{pie: Scrt1.o%s;:crt1.o%s}}}}} \
  52    crti.o%s \
  53    %{shared|pie:crtbeginS.o%s;:crtbegin.o%s}"
  54
  55 #undef  ENDFILE_SPEC
  56 #define ENDFILE_SPEC \
  57   "%{shared|pie:crtendS.o%s;:crtend.o%s} crtn.o%s"
  58
  59 #undef  LIB_SPEC
  60 #define LIB_SPEC \
  61   "%{pthread:-lpthread} -lc"
  62
  63 #if defined(HAVE_LD_EH_FRAME_HDR)
  64 #define LINK_EH_SPEC "--eh-frame-hdr"
  65 #endif
  66
  67 /* Provide a LINK_SPEC appropriate for DragonFly.  Here we provide support
  68    for the special GCC options -static and -shared, which allow us to
  69    link things in one of these three modes by applying the appropriate
  70    combinations of options at link-time.
  71
  72    When the -shared link option is used a final link is not being
  73    done.  */
  74
  75 #define DFBSD_LINK_SPEC \
  76  "%{p:%nconsider using '-pg' instead of '-p' with gprof(1)} \
  77   %{v:-V} \
  78   %{assert*} %{R*} %{rpath*} %{defsym*} \
  79   %{shared:-Bshareable %{h*} %{soname*}} \
  80   %{!shared: \
  81    %{!static: \
  82     %{rdynamic:-export-dynamic} \
  83     -dynamic-linker %(dfbsd_dynamic_linker) \
  84    } \
  85    %{static:-Bstatic} \
  86   } \
  87   %{!static:--hash-style=gnu} \
  88   %{symbolic:-Bsymbolic}"
  89
  90 #undef  LINK_SPEC
  91 #define LINK_SPEC DFBSD_LINK_SPEC
  92
  93 #define DFBSD_DYNAMIC_LINKER "/usr/libexec/ld-elf.so.2"
  94
  95
  96 /* Use --as-needed -lgcc_s for eh support.  */
  97 #ifdef HAVE_LD_AS_NEEDED
  98 #define USE_LD_AS_NEEDED 1
  99 #endif
 100
 101 /************************[  Target stuff  ]***********************************/
 102
 103 /* All DragonFly Architectures support the ELF object file format.  */
 104 #undef  OBJECT_FORMAT_ELF
 105 #define OBJECT_FORMAT_ELF
 106
 107 /* Don't assume anything about the header files.  */
 108 #undef  NO_IMPLICIT_EXTERN_C
 109 #define NO_IMPLICIT_EXTERN_C    1
 110
 111 /* Follow DragonFly's standard headers (<machine/stdint.h>, etc...).  */
 112
 113 #undef  WCHAR_TYPE
 114 #define WCHAR_TYPE "int"
 115
 116 #undef  WINT_TYPE
 117 #define WINT_TYPE "int"
 118
 119 /* Code generation parameters.  */
 120
 121 /* Use periods rather than dollar signs in special g++ assembler names.
 122    This ensures the configuration knows our system correctly so we can link
 123    with libraries compiled with the native cc.  */
 124 #undef NO_DOLLAR_IN_LABEL
 125
 126 /* Used by libgcc2.c.  We support file locking with fcntl / F_SETLKW.
 127    This enables the test coverage code to use file locking when exiting a
 128    program, which avoids race conditions if the program has forked.  */
 129 #define TARGET_POSIX_IO