lynx.h revision 169689 
1/* Target independent definitions for LynxOS.
2   Copyright (C) 1993, 1994, 1995, 1996, 1999, 2000, 2002, 2003, 2004
3   Free Software Foundation, Inc.
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 2, 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
17You should have received a copy of the GNU General Public License
18along with GCC; see the file COPYING.  If not, write to
19the Free Software Foundation, 51 Franklin Street, Fifth Floor,
20Boston, MA 02110-1301, USA.  */
21
22/* In this file we set up defaults that can be chosen by
23   <target>/lynx.h files.  A target-specific lynx.h file can decide
24   either to define and override these definitions or to use them by
25   ensuring they are undefined at this point.  If we were to #undef
26   them here we might accidentally disable some target-specific
27   defines.  */
28
29#ifndef EXTRA_OS_LYNX_TARGET_SPECS
30# define EXTRA_OS_LYNX_TARGET_SPECS
31#endif
32
33#ifndef EXTRA_OS_LYNX_SPECS
34# define EXTRA_OS_LYNX_SPECS \
35  { "cpp_os_lynx", CPP_OS_LYNX_SPEC }, \
36  { "lib_os_lynx", LIB_OS_LYNX_SPEC }, \
37  { "link_os_lynx", LINK_OS_LYNX_SPEC }, \
38  { "startfile_os_lynx", STARTFILE_OS_LYNX_SPEC }, \
39  { "endfile_os_lynx", ENDFILE_OS_LYNX_SPEC }, \
40  EXTRA_OS_LYNX_TARGET_SPECS
41#endif
42
43#ifndef SUBTARGET_EXTRA_SPECS
44# define SUBTARGET_EXTRA_SPECS EXTRA_OS_LYNX_SPECS
45#endif
46
47#ifndef CPP_SPEC
48# define CPP_SPEC "%(cpp_cpu) %(cpp_os_lynx)"
49#endif
50
51#ifndef LIB_SPEC
52# define LIB_SPEC "%(lib_os_lynx)"
53#endif
54
55#ifndef LINK_SPEC
56# define LINK_SPEC "%(link_os_lynx)"
57#endif
58
59#ifndef STARTFILE_SPEC
60# define STARTFILE_SPEC "%(startfile_os_lynx)"
61#endif
62
63#ifndef ENDFILE_SPEC
64# define ENDFILE_SPEC "%(endfile_os_lynx)"
65#endif
66
67#ifndef CPP_OS_LYNX_SPEC
68# define CPP_OS_LYNX_SPEC \
69"%{mthreads: \
70   %{mlegacy-threads: \
71     %ecannot use mthreads and mlegacy-threads together}} \
72 %{mthreads: -D_MULTITHREADED} \
73 %{mlegacy-threads: -D_THREADS_POSIX4ad4} \
74 -Asystem=lynx -Asystem=unix -D__Lynx__ -D__unix__"
75#endif
76
77#ifndef LIB_OS_LYNX_SPEC
78# define LIB_OS_LYNX_SPEC \
79"%{mlegacy-threads:-lposix-pre1c} -lm -lc"
80#endif
81
82/* We link static executables for LynxOS by default unless -mshared is
83   used when linking an executable.  Along the same line, we link to
84   shared libraries when linking a shared object by default unless
85   -static is used.
86
87   We have to pass in our -L options here otherwise the translated
88   startfile directories (%D) will take priority over this.
89   Furthermore since we have to pass in -L options here we have to
90   make sure that -L options provided by the user take priority over
91   everything we specify.  */
92
93#ifndef LINK_OS_LYNX_SPEC
94# define LINK_OS_LYNX_SPEC \
95"%{shared} %{static} \
96 %{mshared: %{static: %ecannot use mshared and static together}} \
97 %{!mshared: %{!shared: %{!static: -static}}} \
98 %{L*} \
99 %{mthreads: \
100   %{mshared: -L/lib/thread/shlib -rpath /lib/thread/shlib} \
101   %{shared: \
102     %{!static: -L/lib/thread/shlib -rpath /lib/thread/shlib} \
103   %{!mshared: -L/lib/thread}} \
104   %{shared: %{static: -L/lib/thread}}} \
105 %{!mthreads: \
106   %{mshared: -L/lib/shlib -rpath /lib/shlib} \
107   %{shared: -L/lib/shlib -rpath /lib/shlib}} \
108 %{mlegacy-threads:-lposix-pre1c} -lm -lc"
109#endif
110
111#ifndef STARTFILE_OS_LYNX_SPEC
112# define STARTFILE_OS_LYNX_SPEC \
113"%{!shared: \
114   %{!mthreads: \
115     %{p:gcrt1.o%s} %{pg:gcrt1.o%s} \
116     %{!p:%{!pg:crt1.o%s}}} \
117   %{mthreads: \
118     %{p:thread/gcrt1.o%s} %{pg:thread/gcrt1.o%s} \
119     %{!p:%{!pg:thread/crt1.o%s }}}}\
120 %{mthreads: thread/crti.o%s} %{!mthreads: crti.o%s} \
121 %{!shared: crtbegin.o%s} \
122 %{shared: crtbeginS.o%s}"
123#endif
124
125#ifndef ENDFILE_OS_LYNX_SPEC
126# define ENDFILE_OS_LYNX_SPEC \
127"%{!shared: crtend.o%s} \
128 %{shared: crtendS.o%s} \
129 %{mthreads: thread/crtn.o%s} %{!mthreads: crtn.o%s}"
130#endif
131
132/* Define the actual types of some ANSI-mandated types.  */
133
134#ifndef SIZE_TYPE
135# define SIZE_TYPE "unsigned int"
136#endif
137
138#ifndef  PTRDIFF_TYPE
139# define PTRDIFF_TYPE "int"
140#endif
141
142#ifndef  WCHAR_TYPE
143# define WCHAR_TYPE "long int"
144#endif
145
146#ifndef  WCHAR_TYPE_SIZE
147# define WCHAR_TYPE_SIZE BITS_PER_WORD
148#endif
149
150/* Define ASM_OUTPUT_ALIGN to use the .balign directive rather that
151   the .align directive with GAS.  */
152
153#ifndef ASM_OUTPUT_ALIGN
154# define ASM_OUTPUT_ALIGN(FILE, LOG) 			\
155  do							\
156    {							\
157      if ((LOG) != 0)					\
158	fprintf ((FILE), "\t.balign %d\n", 1 << (LOG));	\
159    }							\
160  while (0)
161#endif
162
163/* Keep the *_DEBUGGING_INFO defines from elfos.h except that stabs is
164   the default on LynxOS.  */
165
166#ifndef PREFERRED_DEBUGGING_TYPE
167# define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
168#endif
169
170/* We have C++ support in our system headers.  */
171
172#ifndef NO_IMPLICIT_EXTERN_C
173# define NO_IMPLICIT_EXTERN_C
174#endif
175
176#ifndef TARGET_POSIX_IO
177# define TARGET_POSIX_IO
178#endif
179