dragonfly.h revision 1.1 
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
5This file is part of GCC.
6
7GCC is free software; you can redistribute it and/or modify
8it under the terms of the GNU General Public License as published by
9the Free Software Foundation; either version 3, or (at your option)
10any later version.
11
12GCC is distributed in the hope that it will be useful,
13but WITHOUT ANY WARRANTY; without even the implied warranty of
14MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15GNU General Public License for more details.
16
17Under Section 7 of GPL version 3, you are granted additional
18permissions described in the GCC Runtime Library Exception, version
193.1, as published by the Free Software Foundation.
20
21You should have received a copy of the GNU General Public License and
22a copy of the GCC Runtime Library Exception along with this program;
23see 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
130