1 /* Specific flags and argument handling of the C++ front-end.
2 Copyright (C) 1996, 1997, 1998, 1999 Free Software Foundation, Inc.
4 This file is part of GNU CC.
6 GNU CC is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2, or (at your option)
11 GNU CC is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with GNU CC; see the file COPYING. If not, write to
18 the Free Software Foundation, 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA. */
21 /* $FreeBSD: src/contrib/gcc/cp/g++spec.c,v 1.1.1.2.2.1 2002/05/01 20:04:36 obrien Exp $ */
22 /* $DragonFly: src/contrib/gcc/cp/Attic/g++spec.c,v 1.2 2003/06/17 04:24:02 dillon Exp $ */
27 /* This bit is set if we saw a `-xfoo' language specification. */
28 #define LANGSPEC (1<<1)
29 /* This bit is set if they did `-lm' or `-lmath'. */
30 #define MATHLIB (1<<2)
31 /* This bit is set if they did `-lc'. */
32 #define WITHLIBC (1<<3)
35 #define MATH_LIBRARY "-lm"
37 #ifndef MATH_LIBRARY_PROFILE
38 #define MATH_LIBRARY_PROFILE "-lm"
42 #define LIBSTDCXX "-lstdc++"
44 #ifndef LIBSTDCXX_PROFILE
45 #define LIBSTDCXX_PROFILE "-lstdc++"
49 lang_specific_driver (fn, in_argc, in_argv, in_added_libraries)
53 int *in_added_libraries;
57 /* If non-zero, the user gave us the `-p' or `-pg' flag. */
58 int saw_profile_flag = 0;
60 /* If non-zero, the user gave us the `-v' flag. */
61 int saw_verbose_flag = 0;
63 /* This will be 0 if we encounter a situation where we should not
67 /* The number of arguments being added to what's in argv, other than
68 libraries. We use this to track the number of times we've inserted
72 /* Used to track options that take arguments, so we don't go wrapping
73 those with -xc++/-xnone. */
76 /* The new argument list will be contained in this. */
79 /* Non-zero if we saw a `-xfoo' language specification on the
80 command line. Used to avoid adding our own -xc++ if the user
81 already gave a language for the file. */
84 /* "-lm" or "-lmath" if it appears on the command line. */
87 /* "-lc" if it appears on the command line. */
90 /* An array used to flag each argument that needs a bit set for
91 LANGSPEC, MATHLIB, or WITHLIBC. */
94 /* By default, we throw on the math library if we have one. */
95 int need_math = (MATH_LIBRARY[0] != '\0');
97 /* The total number of arguments with the new stuff. */
100 /* The argument list. */
103 /* The number of libraries added in. */
106 /* The total number of arguments with the new stuff. */
111 added_libraries = *in_added_libraries;
113 args = (int *) xmalloc (argc * sizeof (int));
114 bzero ((char *) args, argc * sizeof (int));
116 for (i = 1; i < argc; i++)
118 /* If the previous option took an argument, we swallow it here. */
125 /* We don't do this anymore, since we don't get them with minus
127 if (argv[i][0] == '\0' || argv[i][1] == '\0')
130 if (argv[i][0] == '-')
132 if (library != 0 && (strcmp (argv[i], "-nostdlib") == 0
133 || strcmp (argv[i], "-nodefaultlibs") == 0))
137 else if (strcmp (argv[i], "-lm") == 0
138 || strcmp (argv[i], "-lmath") == 0
139 || strcmp (argv[i], MATH_LIBRARY) == 0
141 || strcmp (argv[i], ALT_LIBM) == 0
148 else if (strcmp (argv[i], "-lc") == 0)
150 else if (strcmp (argv[i], "-pg") == 0 || strcmp (argv[i], "-p") == 0)
152 else if (strcmp (argv[i], "-v") == 0)
154 saw_verbose_flag = 1;
157 /* If they only gave us `-v', don't try to link
162 else if (strncmp (argv[i], "-x", 2) == 0)
164 else if (((argv[i][2] == '\0'
165 && (char *)strchr ("bBVDUoeTuIYmLiA", argv[i][1]) != NULL)
166 || strcmp (argv[i], "-Tdata") == 0))
168 else if (library != 0 && ((argv[i][2] == '\0'
169 && (char *) strchr ("cSEM", argv[i][1]) != NULL)
170 || strcmp (argv[i], "-MM") == 0))
172 /* Don't specify libraries if we won't link, since that would
178 /* Pass other options through. */
191 /* If the filename ends in .c or .i, put options around it.
192 But not if a specified -x option is currently active. */
193 len = strlen (argv[i]);
195 && (argv[i][len - 1] == 'c' || argv[i][len - 1] == 'i')
196 && argv[i][len - 2] == '.')
205 (*fn) ("argument to `%s' missing\n", quote);
207 /* If we know we don't have to do anything, bail now. */
208 if (! added && ! library)
214 num_args = argc + added + need_math;
215 arglist = (char **) xmalloc (num_args * sizeof (char *));
217 /* NOTE: We start at 1 now, not 0. */
218 for (i = 0, j = 0; i < argc; i++, j++)
220 arglist[j] = argv[i];
222 /* Make sure -lstdc++ is before the math library, since libstdc++
223 itself uses those math routines. */
224 if (!saw_math && (args[i] & MATHLIB) && library)
230 if (!saw_libc && (args[i] & WITHLIBC) && library)
236 /* Wrap foo.c and foo.i files in a language specification to
237 force the gcc compiler driver to run cc1plus on them. */
238 if (args[i] & LANGSPEC)
240 int len = strlen (argv[i]);
241 if (argv[i][len - 1] == 'i')
242 arglist[j++] = "-xc++-cpp-output";
244 arglist[j++] = "-xc++";
245 arglist[j++] = argv[i];
246 arglist[j] = "-xnone";
250 /* Add `-lstdc++' if we haven't already done so. */
253 arglist[j++] = saw_profile_flag ? LIBSTDCXX_PROFILE : LIBSTDCXX;
257 arglist[j++] = saw_math;
258 else if (library && need_math)
260 arglist[j++] = saw_profile_flag ? MATH_LIBRARY_PROFILE : MATH_LIBRARY;
264 arglist[j++] = saw_libc;
270 *in_added_libraries = added_libraries;
273 /* Called before linking. Returns 0 on success and -1 on failure. */
274 int lang_specific_pre_link () /* Not used for C++. */
279 /* Number of extra output files that lang_specific_pre_link may generate. */
280 int lang_specific_extra_outfiles = 0; /* Not used for C++. */