| /* rustspec.c -- Specific flags and argument handling of the gcc Rust front end. |
| Copyright (C) 2009-2024 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 3, or (at your option) any later |
| version. |
| |
| 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 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 "opts.h" |
| |
| // satisfy intellisense |
| #include "options.h" |
| |
| /* This bit is set if we saw a `-xfoo' language specification. */ |
| #define LANGSPEC (1 << 1) |
| /* This bit is set if they did `-lc'. */ |
| #define WITHLIBC (1 << 2) |
| /* Skip this option. */ |
| #define SKIPOPT (1 << 3) |
| |
| void |
| lang_specific_driver (struct cl_decoded_option **in_decoded_options, |
| unsigned int *in_decoded_options_count, |
| int *in_added_libraries) |
| { |
| unsigned int i, j; |
| |
| /* The new argument list will be contained in this. */ |
| struct cl_decoded_option *new_decoded_options; |
| |
| /* "-lc" if it appears on the command line. */ |
| const struct cl_decoded_option *saw_libc = 0; |
| |
| /* An array used to flag each argument that needs a bit set for |
| LANGSPEC or WITHLIBC. */ |
| int *args; |
| |
| /* 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. */ |
| unsigned int argc; |
| |
| /* The argument list. */ |
| 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; |
| |
| /* Whether the -o option was used. */ |
| bool saw_opt_o = false; |
| |
| /* The first input file with an extension of .rs. */ |
| const char *first_rust_file = NULL; |
| |
| argc = *in_decoded_options_count; |
| decoded_options = *in_decoded_options; |
| added_libraries = *in_added_libraries; |
| |
| args = XCNEWVEC (int, argc); |
| |
| for (i = 1; i < argc; i++) |
| { |
| const char *arg = decoded_options[i].arg; |
| |
| switch (decoded_options[i].opt_index) |
| { |
| case OPT_l: |
| if (strcmp (arg, "c") == 0) |
| args[i] |= WITHLIBC; |
| break; |
| |
| case OPT_o: |
| saw_opt_o = true; |
| break; |
| |
| case OPT_static: |
| static_link = 1; |
| break; |
| |
| case OPT_static_libgcc: |
| shared_libgcc = 0; |
| break; |
| |
| case OPT_SPECIAL_input_file: |
| if (first_rust_file == NULL) |
| { |
| int len; |
| |
| len = strlen (arg); |
| if (len > 3 && strcmp (arg + len - 3, ".rs") == 0) |
| first_rust_file = arg; |
| } |
| else |
| { |
| // FIXME: ARTHUR: Do we want to error here? If there's already one |
| // file? |
| // How do we error here? Do we want to instead just handle that in |
| // the session manager? |
| } |
| |
| break; |
| } |
| } |
| |
| /* 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 + shared_libgcc * 5 + 10; |
| 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. */ |
| new_decoded_options[j++] = decoded_options[i++]; |
| |
| /* NOTE: We start at 1 now, not 0. */ |
| while (i < argc) |
| { |
| new_decoded_options[j] = decoded_options[i]; |
| |
| if (!saw_libc && (args[i] & WITHLIBC)) |
| { |
| --j; |
| saw_libc = &decoded_options[i]; |
| } |
| |
| if ((args[i] & SKIPOPT) != 0) |
| --j; |
| |
| i++; |
| j++; |
| } |
| |
| /* If we didn't see a -o option, add one. This is because we need |
| the driver to pass all .rs files to crab1. Without a -o option the |
| driver will invoke crab1 separately for each input file. FIXME: |
| This should probably use some other interface to force the driver |
| to set combine_inputs. */ |
| if (!saw_opt_o) |
| { |
| generate_option (OPT_o, "a.out", 1, CL_DRIVER, &new_decoded_options[j]); |
| j++; |
| } |
| |
| if (saw_libc) |
| 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_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 (void) /* Not used for Rust. */ |
| { |
| return 0; |
| } |
| |
| /* Number of extra output files that lang_specific_pre_link may generate. */ |
| int lang_specific_extra_outfiles = 0; /* Not used for Rust. */ |