* ChangeLog: Follow spelling conventions.
[official-gcc.git] / gcc / config / svr4.h
blobbc6a3b8ed5dc64566552d94730165cb47091e575
1 /* Operating system specific defines to be used when targeting GCC for some
2 generic System V Release 4 system.
3 Copyright (C) 1991, 1994, 1995, 1996, 1997, 1998, 1999,
4 2000, 2001 Free Software Foundation, Inc.
5 Contributed by Ron Guilmette (rfg@monkeys.com).
7 This file is part of GNU CC.
9 GNU CC is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2, or (at your option)
12 any later version.
14 GNU CC is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with GNU CC; see the file COPYING. If not, write to
21 the Free Software Foundation, 59 Temple Place - Suite 330,
22 Boston, MA 02111-1307, USA.
24 To use this file, make up a line like that in config.gcc:
26 tm_file="$tm_file elfos.h svr4.h MACHINE/svr4.h"
28 where MACHINE is replaced by the name of the basic hardware that you
29 are targeting for. Then, in the file MACHINE/svr4.h, put any really
30 system-specific defines (or overrides of defines) which you find that
31 you need. For example, CPP_PREDEFINES is defined here with only the
32 defined -Dunix and -DSVR4. You should probably override that in your
33 target-specific MACHINE/svr4.h file with a set of defines that
34 includes these, but also contains an appropriate define for the type
35 of hardware that you are targeting.
38 /* Define a symbol indicating that we are using svr4.h. */
39 #define USING_SVR4_H
41 /* Cpp, assembler, linker, library, and startfile spec's. */
43 /* This defines which switch letters take arguments. On svr4, most of
44 the normal cases (defined in gcc.c) apply, and we also have -h* and
45 -z* options (for the linker). Note however that there is no such
46 thing as a -T option for svr4. */
48 #define SWITCH_TAKES_ARG(CHAR) \
49 (DEFAULT_SWITCH_TAKES_ARG (CHAR) \
50 || (CHAR) == 'h' \
51 || (CHAR) == 'x' \
52 || (CHAR) == 'z')
54 /* This defines which multi-letter switches take arguments. On svr4,
55 there are no such switches except those implemented by GCC itself. */
57 #define WORD_SWITCH_TAKES_ARG(STR) \
58 (DEFAULT_WORD_SWITCH_TAKES_ARG (STR) \
59 && strcmp (STR, "Tdata") && strcmp (STR, "Ttext") \
60 && strcmp (STR, "Tbss"))
62 /* You should redefine CPP_PREDEFINES in any file which includes this one.
63 The definition should be appropriate for the type of target system
64 involved, and it should include any -A (assertion) options which are
65 appropriate for the given target system. */
66 #undef CPP_PREDEFINES
68 /* Provide an ASM_SPEC appropriate for svr4. Here we try to support as
69 many of the specialized svr4 assembler options as seems reasonable,
70 given that there are certain options which we can't (or shouldn't)
71 support directly due to the fact that they conflict with other options
72 for other svr4 tools (e.g. ld) or with other options for GCC itself.
73 For example, we don't support the -o (output file) or -R (remove
74 input file) options because GCC already handles these things. We
75 also don't support the -m (run m4) option for the assembler because
76 that conflicts with the -m (produce load map) option of the svr4
77 linker. We do however allow passing arbitrary options to the svr4
78 assembler via the -Wa, option.
80 Note that gcc doesn't allow a space to follow -Y in a -Ym,* or -Yd,*
81 option.
84 #undef ASM_SPEC
85 #define ASM_SPEC \
86 "%{v:-V} %{Qy:} %{!Qn:-Qy} %{n} %{T} %{Ym,*} %{Yd,*} %{Wa,*:%*}"
88 /* svr4 assemblers need the `-' (indicating input from stdin) to come after
89 the -o option (and its argument) for some reason. If we try to put it
90 before the -o option, the assembler will try to read the file named as
91 the output file in the -o option as an input file (after it has already
92 written some stuff to it) and the binary stuff contained therein will
93 cause totally confuse the assembler, resulting in many spurious error
94 messages. */
96 #undef ASM_FINAL_SPEC
97 #define ASM_FINAL_SPEC "%|"
99 /* Under svr4, the normal location of the `ld' and `as' programs is the
100 /usr/ccs/bin directory. */
102 #ifndef CROSS_COMPILE
103 #undef MD_EXEC_PREFIX
104 #define MD_EXEC_PREFIX "/usr/ccs/bin/"
105 #endif
107 /* Under svr4, the normal location of the various *crt*.o files is the
108 /usr/ccs/lib directory. */
110 #ifndef CROSS_COMPILE
111 #undef MD_STARTFILE_PREFIX
112 #define MD_STARTFILE_PREFIX "/usr/ccs/lib/"
113 #endif
115 /* Provide a LIB_SPEC appropriate for svr4. Here we tack on the default
116 standard C library (unless we are building a shared library). */
118 #undef LIB_SPEC
119 #define LIB_SPEC "%{!shared:%{!symbolic:-lc}}"
121 /* Provide an ENDFILE_SPEC appropriate for svr4. Here we tack on our own
122 magical crtend.o file (see crtstuff.c) which provides part of the
123 support for getting C++ file-scope static object constructed before
124 entering `main', followed by the normal svr3/svr4 "finalizer" file,
125 which is either `gcrtn.o' or `crtn.o'. */
127 #undef ENDFILE_SPEC
128 #define ENDFILE_SPEC "crtend.o%s %{pg:gcrtn.o%s}%{!pg:crtn.o%s}"
130 /* Provide a LINK_SPEC appropriate for svr4. Here we provide support
131 for the special GCC options -static, -shared, and -symbolic which
132 allow us to link things in one of these three modes by applying the
133 appropriate combinations of options at link-time. We also provide
134 support here for as many of the other svr4 linker options as seems
135 reasonable, given that some of them conflict with options for other
136 svr4 tools (e.g. the assembler). In particular, we do support the
137 -z*, -V, -b, -t, -Qy, -Qn, and -YP* options here, and the -e*, -l*,
138 -o*, -r, -s, -u*, and -L* options are directly supported by gcc.c
139 itself. We don't directly support the -m (generate load map)
140 option because that conflicts with the -m (run m4) option of the
141 svr4 assembler. We also don't directly support the svr4 linker's
142 -I* or -M* options because these conflict with existing GCC
143 options. We do however allow passing arbitrary options to the svr4
144 linker via the -Wl, option, in gcc.c. We don't support the svr4
145 linker's -a option at all because it is totally useless and because
146 it conflicts with GCC's own -a option.
148 Note that gcc doesn't allow a space to follow -Y in a -YP,* option.
150 When the -G link option is used (-shared and -symbolic) a final link is
151 not being done. */
153 #undef LINK_SPEC
154 #ifdef CROSS_COMPILE
155 #define LINK_SPEC "%{h*} %{v:-V} \
156 %{b} \
157 %{static:-dn -Bstatic} \
158 %{shared:-G -dy -z text} \
159 %{symbolic:-Bsymbolic -G -dy -z text} \
160 %{G:-G} \
161 %{YP,*} \
162 %{Qy:} %{!Qn:-Qy}"
163 #else
164 #define LINK_SPEC "%{h*} %{v:-V} \
165 %{b} \
166 %{static:-dn -Bstatic} \
167 %{shared:-G -dy -z text} \
168 %{symbolic:-Bsymbolic -G -dy -z text} \
169 %{G:-G} \
170 %{YP,*} \
171 %{!YP,*:%{p:-Y P,/usr/ccs/lib/libp:/usr/lib/libp:/usr/ccs/lib:/usr/lib} \
172 %{!p:-Y P,/usr/ccs/lib:/usr/lib}} \
173 %{Qy:} %{!Qn:-Qy}"
174 #endif
176 /* Gcc automatically adds in one of the files /usr/ccs/lib/values-Xc.o
177 or /usr/ccs/lib/values-Xa.o for each final link step (depending
178 upon the other gcc options selected, such as -ansi). These files
179 each contain one (initialized) copy of a special variable called
180 `_lib_version'. Each one of these files has `_lib_version' initialized
181 to a different (enum) value. The SVR4 library routines query the
182 value of `_lib_version' at run to decide how they should behave.
183 Specifically, they decide (based upon the value of `_lib_version')
184 if they will act in a strictly ANSI conforming manner or not. */
186 #undef STARTFILE_SPEC
187 #define STARTFILE_SPEC "%{!shared: \
188 %{!symbolic: \
189 %{pg:gcrt1.o%s}%{!pg:%{p:mcrt1.o%s}%{!p:crt1.o%s}}}}\
190 %{pg:gcrti.o%s}%{!pg:crti.o%s} \
191 %{ansi:values-Xc.o%s} \
192 %{!ansi:values-Xa.o%s} \
193 crtbegin.o%s"
195 /* The numbers used to denote specific machine registers in the System V
196 Release 4 DWARF debugging information are quite likely to be totally
197 different from the numbers used in BSD stabs debugging information
198 for the same kind of target machine. Thus, we undefine the macro
199 DBX_REGISTER_NUMBER here as an extra inducement to get people to
200 provide proper machine-specific definitions of DBX_REGISTER_NUMBER
201 (which is also used to provide DWARF registers numbers in dwarfout.c)
202 in their tm.h files which include this file. */
204 #undef DBX_REGISTER_NUMBER
206 /* Define the actual types of some ANSI-mandated types. (These
207 definitions should work for most SVR4 systems). */
209 #undef SIZE_TYPE
210 #define SIZE_TYPE "unsigned int"
212 #undef PTRDIFF_TYPE
213 #define PTRDIFF_TYPE "int"
215 #undef WCHAR_TYPE
216 #define WCHAR_TYPE "long int"
218 #undef WCHAR_TYPE_SIZE
219 #define WCHAR_TYPE_SIZE BITS_PER_WORD
221 /* This causes trouble, because it requires the host machine
222 to support ANSI C. */
223 /* #define MULTIBYTE_CHARS */
225 #define TARGET_HAS_F_SETLKW