-/* Specific flags and argument handling of the C++ front-end.
- Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003
- Free Software Foundation, Inc.
+/* Specific flags and argument handling of the C++ front end.
+ Copyright (C) 1996-2020 Free Software Foundation, Inc.
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2, or (at your option)
+the Free Software Foundation; either version 3, or (at your option)
any later version.
GCC is distributed in the hope that it will be useful,
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
-along with GCC; see the file COPYING. If not, write to
-the Free Software Foundation, 59 Temple Place - Suite 330,
-Boston, MA 02111-1307, USA. */
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
#include "config.h"
#include "system.h"
#include "coretypes.h"
#include "tm.h"
-#include "gcc.h"
+#include "opts.h"
/* This bit is set if we saw a `-xfoo' language specification. */
#define LANGSPEC (1<<1)
/* This bit is set if they did `-lm' or `-lmath'. */
#define MATHLIB (1<<2)
+/* This bit is set if they did `-lrt' or equivalent. */
+#define TIMELIB (1<<3)
/* This bit is set if they did `-lc'. */
-#define WITHLIBC (1<<3)
+#define WITHLIBC (1<<4)
+/* Skip this option. */
+#define SKIPOPT (1<<5)
#ifndef MATH_LIBRARY
-#define MATH_LIBRARY "-lm"
+#define MATH_LIBRARY "m"
#endif
#ifndef MATH_LIBRARY_PROFILE
-#define MATH_LIBRARY_PROFILE "-lm"
+#define MATH_LIBRARY_PROFILE MATH_LIBRARY
+#endif
+
+#ifndef TIME_LIBRARY
+#define TIME_LIBRARY ""
#endif
#ifndef LIBSTDCXX
-#define LIBSTDCXX "-lstdc++"
+#define LIBSTDCXX "stdc++"
#endif
#ifndef LIBSTDCXX_PROFILE
-#define LIBSTDCXX_PROFILE "-lstdc++"
+#define LIBSTDCXX_PROFILE LIBSTDCXX
+#endif
+#ifndef LIBSTDCXX_STATIC
+#define LIBSTDCXX_STATIC NULL
#endif
void
-lang_specific_driver (in_argc, in_argv, in_added_libraries)
- int *in_argc;
- const char *const **in_argv;
- int *in_added_libraries;
+lang_specific_driver (struct cl_decoded_option **in_decoded_options,
+ unsigned int *in_decoded_options_count,
+ int *in_added_libraries)
{
- int i, j;
+ unsigned int i, j;
/* If nonzero, the user gave us the `-p' or `-pg' flag. */
int saw_profile_flag = 0;
- /* If nonzero, the user gave us the `-v' flag. */
- int saw_verbose_flag = 0;
-
- /* This is a tristate:
+ /* What do with libstdc++:
-1 means we should not link in libstdc++
0 means we should link in libstdc++ if it is needed
- 1 means libstdc++ is needed and should be linked in. */
+ 1 means libstdc++ is needed and should be linked in.
+ 2 means libstdc++ is needed and should be linked statically. */
int library = 0;
/* The number of arguments being added to what's in argv, other than
-xc++/-xnone. */
int added = 0;
- /* Used to track options that take arguments, so we don't go wrapping
- those with -xc++/-xnone. */
- const char *quote = NULL;
-
/* The new argument list will be contained in this. */
- const char **arglist;
+ struct cl_decoded_option *new_decoded_options;
/* Nonzero if we saw a `-xfoo' language specification on the
command line. Used to avoid adding our own -xc++ if the user
int saw_speclang = 0;
/* "-lm" or "-lmath" if it appears on the command line. */
- const char *saw_math = 0;
+ const struct cl_decoded_option *saw_math = NULL;
+
+ /* "-lrt" or eqivalent if it appears on the command line. */
+ const struct cl_decoded_option *saw_time = NULL;
/* "-lc" if it appears on the command line. */
- const char *saw_libc = 0;
+ const struct cl_decoded_option *saw_libc = NULL;
/* An array used to flag each argument that needs a bit set for
- LANGSPEC, MATHLIB, or WITHLIBC. */
+ LANGSPEC, MATHLIB, TIMELIB, or WITHLIBC. */
int *args;
/* By default, we throw on the math library if we have one. */
int need_math = (MATH_LIBRARY[0] != '\0');
+ /* By default, we throw on the time library if we have one. */
+ int need_time = (TIME_LIBRARY[0] != '\0');
+
+ /* True if we saw -static. */
+ int static_link = 0;
+
/* True if we should add -shared-libgcc to the command-line. */
int shared_libgcc = 1;
/* The total number of arguments with the new stuff. */
- int argc;
+ unsigned int argc;
/* The argument list. */
- const char *const *argv;
+ struct cl_decoded_option *decoded_options;
/* The number of libraries added in. */
int added_libraries;
/* The total number of arguments with the new stuff. */
- int num_args = 1;
+ unsigned int num_args = 1;
- argc = *in_argc;
- argv = *in_argv;
+ argc = *in_decoded_options_count;
+ decoded_options = *in_decoded_options;
added_libraries = *in_added_libraries;
- args = (int *) xcalloc (argc, sizeof (int));
+ args = XCNEWVEC (int, argc);
for (i = 1; i < argc; i++)
{
- /* If the previous option took an argument, we swallow it here. */
- if (quote)
- {
- quote = NULL;
- continue;
- }
+ const char *arg = decoded_options[i].arg;
+ if (decoded_options[i].errors & CL_ERR_MISSING_ARG)
+ continue; /* Avoid examining arguments of options missing them. */
- /* We don't do this anymore, since we don't get them with minus
- signs on them. */
- if (argv[i][0] == '\0' || argv[i][1] == '\0')
- continue;
-
- if (argv[i][0] == '-')
+ switch (decoded_options[i].opt_index)
{
- if (strcmp (argv[i], "-nostdlib") == 0
- || strcmp (argv[i], "-nodefaultlibs") == 0)
- {
- library = -1;
- }
- else if (strcmp (argv[i], "-lm") == 0
- || strcmp (argv[i], "-lmath") == 0
- || strcmp (argv[i], MATH_LIBRARY) == 0
-#ifdef ALT_LIBM
- || strcmp (argv[i], ALT_LIBM) == 0
-#endif
- )
+ case OPT_nostdlib:
+ case OPT_nodefaultlibs:
+ library = -1;
+ break;
+
+ case OPT_l:
+ if (strcmp (arg, MATH_LIBRARY) == 0)
{
args[i] |= MATHLIB;
need_math = 0;
}
- else if (strcmp (argv[i], "-lc") == 0)
- args[i] |= WITHLIBC;
- else if (strcmp (argv[i], "-pg") == 0 || strcmp (argv[i], "-p") == 0)
- saw_profile_flag++;
- else if (strcmp (argv[i], "-v") == 0)
- saw_verbose_flag = 1;
- else if (strncmp (argv[i], "-x", 2) == 0)
- {
- if (library == 0)
- {
- const char * arg;
- if (argv[i][2] != '\0')
- arg = argv[i]+2;
- else if (argv[i+1] != NULL)
- arg = argv[i+1];
- else /* Error condition, message will be printed later. */
- arg = "";
- if (strcmp (arg, "c++") == 0
- || strcmp (arg, "c++-cpp-output") == 0)
- library = 1;
- }
- saw_speclang = 1;
- }
- else if (((argv[i][2] == '\0'
- && (char *)strchr ("bBVDUoeTuIYmLiA", argv[i][1]) != NULL)
- || strcmp (argv[i], "-Xlinker") == 0
- || strcmp (argv[i], "-Tdata") == 0))
- quote = argv[i];
- else if ((argv[i][2] == '\0'
- && (char *) strchr ("cSEM", argv[i][1]) != NULL)
- || strcmp (argv[i], "-MM") == 0
- || strcmp (argv[i], "-fsyntax-only") == 0)
+ else if (strcmp (arg, TIME_LIBRARY) == 0)
{
- /* Don't specify libraries if we won't link, since that would
- cause a warning. */
- library = -1;
+ args[i] |= TIMELIB;
+ need_time = 0;
}
- else if (strcmp (argv[i], "-static-libgcc") == 0
- || strcmp (argv[i], "-static") == 0)
- shared_libgcc = 0;
- else if (DEFAULT_WORD_SWITCH_TAKES_ARG (&argv[i][1]))
- i++;
+ else if (strcmp (arg, "c") == 0)
+ args[i] |= WITHLIBC;
else
- /* Pass other options through. */
- continue;
- }
- else
- {
- int len;
-
- if (saw_speclang)
- {
- saw_speclang = 0;
+ /* Unrecognized libraries (e.g. -lfoo) may require libstdc++. */
+ library = (library == 0) ? 1 : library;
+ break;
+
+ case OPT_pg:
+ case OPT_p:
+ saw_profile_flag++;
+ break;
+
+ case OPT_x:
+ if (library == 0
+ && (strcmp (arg, "c++") == 0
+ || strcmp (arg, "c++-cpp-output") == 0
+ || strcmp (arg, "objective-c++") == 0
+ || strcmp (arg, "objective-c++-cpp-output") == 0))
+ library = 1;
+
+ saw_speclang = 1;
+ break;
+
+ case OPT_Xlinker:
+ case OPT_Wl_:
+ /* Arguments that go directly to the linker might be .o files,
+ or something, and so might cause libstdc++ to be needed. */
+ if (library == 0)
+ library = 1;
+ break;
+
+ case OPT_c:
+ case OPT_r:
+ case OPT_S:
+ case OPT_E:
+ case OPT_M:
+ case OPT_MM:
+ case OPT_fsyntax_only:
+ /* Don't specify libraries if we won't link, since that would
+ cause a warning. */
+ library = -1;
+ break;
+
+ case OPT_static:
+ static_link = 1;
+ break;
+
+ case OPT_static_libgcc:
+ shared_libgcc = 0;
+ break;
+
+ case OPT_static_libstdc__:
+ library = library >= 0 ? 2 : library;
+ args[i] |= SKIPOPT;
+ break;
+
+ case OPT_SPECIAL_input_file:
+ {
+ int len;
+
+ /* We don't do this anymore, since we don't get them with minus
+ signs on them. */
+ if (arg[0] == '\0' || arg[1] == '\0')
continue;
- }
- /* If the filename ends in .[chi], put options around it.
- But not if a specified -x option is currently active. */
- len = strlen (argv[i]);
- if (len > 2
- && (argv[i][len - 1] == 'c'
- || argv[i][len - 1] == 'i'
- || argv[i][len - 1] == 'h')
- && argv[i][len - 2] == '.')
- {
- args[i] |= LANGSPEC;
- added += 2;
- }
-
- /* If we don't know that this is a header file, we might
- need to be linking in the libraries. */
- if (library == 0)
- {
- if ((len <= 2 || strcmp (argv[i] + (len - 2), ".H") != 0)
- && (len <= 2 || strcmp (argv[i] + (len - 2), ".h") != 0)
- && (len <= 3 || strcmp (argv[i] + (len - 3), ".hh") != 0))
- library = 1;
- }
+ if (saw_speclang)
+ {
+ saw_speclang = 0;
+ continue;
+ }
+
+ /* If the filename ends in .[chi], put options around it.
+ But not if a specified -x option is currently active. */
+ len = strlen (arg);
+ if (len > 2
+ && (arg[len - 1] == 'c'
+ || arg[len - 1] == 'i'
+ || arg[len - 1] == 'h')
+ && arg[len - 2] == '.')
+ {
+ args[i] |= LANGSPEC;
+ added += 2;
+ }
+
+ /* If we don't know that this is a header file, we might
+ need to be linking in the libraries. */
+ if (library == 0)
+ {
+ if ((len <= 2 || strcmp (arg + (len - 2), ".H") != 0)
+ && (len <= 2 || strcmp (arg + (len - 2), ".h") != 0)
+ && (len <= 4 || strcmp (arg + (len - 4), ".hpp") != 0)
+ && (len <= 3 || strcmp (arg + (len - 3), ".hp") != 0)
+ && (len <= 4 || strcmp (arg + (len - 4), ".hxx") != 0)
+ && (len <= 4 || strcmp (arg + (len - 4), ".h++") != 0)
+ && (len <= 4 || strcmp (arg + (len - 4), ".HPP") != 0)
+ && (len <= 4 || strcmp (arg + (len - 4), ".tcc") != 0)
+ && (len <= 3 || strcmp (arg + (len - 3), ".hh") != 0))
+ library = 1;
+ }
+ }
+ break;
}
}
- if (quote)
- fatal ("argument to `%s' missing\n", quote);
-
- /* If we know we don't have to do anything, bail now. */
- if (! added && library <= 0)
- {
- free (args);
- return;
- }
-
/* There's no point adding -shared-libgcc if we don't have a shared
libgcc. */
#ifndef ENABLE_SHARED_LIBGCC
shared_libgcc = 0;
#endif
- /* Make sure to have room for the trailing NULL argument. */
- num_args = argc + added + need_math + shared_libgcc + (library > 0) + 1;
- arglist = (const char **) xmalloc (num_args * sizeof (char *));
+ /* Add one for shared_libgcc or extra static library. */
+ num_args = argc + added + need_math + (library > 0) * 4 + 1;
+ new_decoded_options = XNEWVEC (struct cl_decoded_option, num_args);
i = 0;
j = 0;
-
+
/* Copy the 0th argument, i.e., the name of the program itself. */
- arglist[i++] = argv[j++];
+ new_decoded_options[j++] = decoded_options[i++];
/* NOTE: We start at 1 now, not 0. */
while (i < argc)
{
- arglist[j] = argv[i];
+ new_decoded_options[j] = decoded_options[i];
/* Make sure -lstdc++ is before the math library, since libstdc++
itself uses those math routines. */
if (!saw_math && (args[i] & MATHLIB) && library > 0)
{
--j;
- saw_math = argv[i];
+ saw_math = &decoded_options[i];
+ }
+
+ if (!saw_time && (args[i] & TIMELIB) && library > 0)
+ {
+ --j;
+ saw_time = &decoded_options[i];
}
if (!saw_libc && (args[i] & WITHLIBC) && library > 0)
{
--j;
- saw_libc = argv[i];
+ saw_libc = &decoded_options[i];
}
/* Wrap foo.[chi] files in a language specification to
force the gcc compiler driver to run cc1plus on them. */
if (args[i] & LANGSPEC)
{
- int len = strlen (argv[i]);
- switch (argv[i][len - 1])
+ const char *arg = decoded_options[i].arg;
+ int len = strlen (arg);
+ switch (arg[len - 1])
{
case 'c':
- arglist[j++] = "-xc++";
+ generate_option (OPT_x, "c++", 1, CL_DRIVER,
+ &new_decoded_options[j++]);
break;
case 'i':
- arglist[j++] = "-xc++-cpp-output";
+ generate_option (OPT_x, "c++-cpp-output", 1, CL_DRIVER,
+ &new_decoded_options[j++]);
break;
case 'h':
- arglist[j++] = "-xc++-header";
+ generate_option (OPT_x, "c++-header", 1, CL_DRIVER,
+ &new_decoded_options[j++]);
break;
default:
- abort ();
+ gcc_unreachable ();
}
- arglist[j++] = argv[i];
- arglist[j] = "-xnone";
+ new_decoded_options[j++] = decoded_options[i];
+ generate_option (OPT_x, "none", 1, CL_DRIVER,
+ &new_decoded_options[j]);
}
+ if ((args[i] & SKIPOPT) != 0)
+ --j;
+
i++;
j++;
}
/* Add `-lstdc++' if we haven't already done so. */
if (library > 0)
{
- arglist[j++] = saw_profile_flag ? LIBSTDCXX_PROFILE : LIBSTDCXX;
- added_libraries++;
-#ifdef USE_LIBUNWIND_EXCEPTIONS
-# ifndef LIBUNWIND
-# define LIBUNWIND "-lunwind"
-# endif
- arglist[j++] = LIBUNWIND;
+#ifdef HAVE_LD_STATIC_DYNAMIC
+ if (library > 1 && !static_link)
+ {
+ generate_option (OPT_Wl_, LD_STATIC_OPTION, 1, CL_DRIVER,
+ &new_decoded_options[j]);
+ j++;
+ }
+#endif
+ generate_option (OPT_l,
+ saw_profile_flag ? LIBSTDCXX_PROFILE : LIBSTDCXX, 1,
+ CL_DRIVER, &new_decoded_options[j]);
added_libraries++;
+ j++;
+ /* Add target-dependent static library, if necessary. */
+ if ((static_link || library > 1) && LIBSTDCXX_STATIC != NULL)
+ {
+ generate_option (OPT_l, LIBSTDCXX_STATIC, 1,
+ CL_DRIVER, &new_decoded_options[j]);
+ added_libraries++;
+ j++;
+ }
+#ifdef HAVE_LD_STATIC_DYNAMIC
+ if (library > 1 && !static_link)
+ {
+ generate_option (OPT_Wl_, LD_DYNAMIC_OPTION, 1, CL_DRIVER,
+ &new_decoded_options[j]);
+ j++;
+ }
#endif
}
if (saw_math)
- arglist[j++] = saw_math;
+ new_decoded_options[j++] = *saw_math;
else if (library > 0 && need_math)
{
- arglist[j++] = saw_profile_flag ? MATH_LIBRARY_PROFILE : MATH_LIBRARY;
+ generate_option (OPT_l,
+ saw_profile_flag ? MATH_LIBRARY_PROFILE : MATH_LIBRARY,
+ 1, CL_DRIVER, &new_decoded_options[j]);
+ added_libraries++;
+ j++;
+ }
+ if (saw_time)
+ new_decoded_options[j++] = *saw_time;
+ else if (library > 0 && need_time)
+ {
+ generate_option (OPT_l, TIME_LIBRARY, 1, CL_DRIVER,
+ &new_decoded_options[j]);
added_libraries++;
+ j++;
}
if (saw_libc)
- arglist[j++] = saw_libc;
- if (shared_libgcc)
- arglist[j++] = "-shared-libgcc";
+ new_decoded_options[j++] = *saw_libc;
+ if (shared_libgcc && !static_link)
+ generate_option (OPT_shared_libgcc, NULL, 1, CL_DRIVER,
+ &new_decoded_options[j++]);
- arglist[j] = NULL;
-
- *in_argc = j;
- *in_argv = arglist;
+ *in_decoded_options_count = j;
+ *in_decoded_options = new_decoded_options;
*in_added_libraries = added_libraries;
}
/* Called before linking. Returns 0 on success and -1 on failure. */
-int lang_specific_pre_link () /* Not used for C++. */
+int lang_specific_pre_link (void) /* Not used for C++. */
{
return 0;
}
/* Number of extra output files that lang_specific_pre_link may generate. */
int lang_specific_extra_outfiles = 0; /* Not used for C++. */
-
-/* Table of language-specific spec functions. */
-const struct spec_function lang_specific_spec_functions[] =
-{
- { 0, 0 }
-};