-/* Specific flags and argument handling of the C++ front-end.
- Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001 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 GNU CC.
+This file is part of GCC.
-GNU CC is free software; you can redistribute it and/or modify
+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.
-GNU CC is distributed in the hope that it will be useful,
+GCC is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
-along with GNU CC; 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 "gcc.h"
+#include "coretypes.h"
+#include "tm.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 non-zero, the user gave us the `-p' or `-pg' flag. */
+ /* If nonzero, the user gave us the `-p' or `-pg' flag. */
int saw_profile_flag = 0;
- /* If non-zero, the user gave us the `-v' flag. */
- int saw_verbose_flag = 0;
-
- /* This will be 0 if we encounter a situation where we should not
- link in libstdc++. */
- int library = 1;
+ /* 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.
+ 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
libraries. We use this to track the number of times we've inserted
-xc++/-xnone. */
- int added = 2;
-
- /* Used to track options that take arguments, so we don't go wrapping
- those with -xc++/-xnone. */
- const char *quote = NULL;
+ int added = 0;
/* The new argument list will be contained in this. */
- const char **arglist;
+ struct cl_decoded_option *new_decoded_options;
- /* Non-zero if we saw a `-xfoo' language specification on the
+ /* Nonzero if we saw a `-xfoo' language specification on the
command line. Used to avoid adding our own -xc++ if the user
already gave a language for the file. */
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;
- }
-
- /* 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;
+ const char *arg = decoded_options[i].arg;
+ if (decoded_options[i].errors & CL_ERR_MISSING_ARG)
+ continue; /* Avoid examining arguments of options missing them. */
- if (argv[i][0] == '-')
+ switch (decoded_options[i].opt_index)
{
- if (library != 0 && (strcmp (argv[i], "-nostdlib") == 0
- || strcmp (argv[i], "-nodefaultlibs") == 0))
- {
- library = 0;
- }
- 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;
- if (argc == 2)
- {
- /* If they only gave us `-v', don't try to link
- in libg++. */
- library = 0;
- }
- }
- else if (strncmp (argv[i], "-x", 2) == 0)
- 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 (library != 0 && ((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 = 0;
- added -= 2;
+ args[i] |= TIMELIB;
+ need_time = 0;
}
- else if (strcmp (argv[i], "-static-libgcc") == 0
- || strcmp (argv[i], "-static") == 0)
- shared_libgcc = 0;
+ 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 .c or .i, 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 - 2] == '.')
- {
- args[i] |= LANGSPEC;
- added += 2;
- }
+ 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)
- {
- 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 + 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)
+ if (!saw_math && (args[i] & MATHLIB) && library > 0)
+ {
+ --j;
+ saw_math = &decoded_options[i];
+ }
+
+ if (!saw_time && (args[i] & TIMELIB) && library > 0)
{
--j;
- saw_math = argv[i];
+ saw_time = &decoded_options[i];
}
- if (!saw_libc && (args[i] & WITHLIBC) && library)
+ if (!saw_libc && (args[i] & WITHLIBC) && library > 0)
{
--j;
- saw_libc = argv[i];
+ saw_libc = &decoded_options[i];
}
- /* Wrap foo.c and foo.i files in a language specification to
+ /* 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]);
- if (argv[i][len - 1] == 'i')
- arglist[j++] = "-xc++-cpp-output";
- else
- arglist[j++] = "-xc++";
- arglist[j++] = argv[i];
- arglist[j] = "-xnone";
+ const char *arg = decoded_options[i].arg;
+ int len = strlen (arg);
+ switch (arg[len - 1])
+ {
+ case 'c':
+ generate_option (OPT_x, "c++", 1, CL_DRIVER,
+ &new_decoded_options[j++]);
+ break;
+ case 'i':
+ generate_option (OPT_x, "c++-cpp-output", 1, CL_DRIVER,
+ &new_decoded_options[j++]);
+ break;
+ case 'h':
+ generate_option (OPT_x, "c++-header", 1, CL_DRIVER,
+ &new_decoded_options[j++]);
+ break;
+ default:
+ gcc_unreachable ();
+ }
+ 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)
+ 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;
- else if (library && need_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";
-
- arglist[j] = NULL;
+ new_decoded_options[j++] = *saw_libc;
+ if (shared_libgcc && !static_link)
+ generate_option (OPT_shared_libgcc, NULL, 1, CL_DRIVER,
+ &new_decoded_options[j++]);
- *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;
}