From: Philip Herron <philip.her...@embecosm.com> We have some rust specific langugage options note -fwrapv is enabled by default in the code. We are trying to respect options such as -Wunused-result which we get by porting over c++ no-discard for rust's must-use attribute, so we have enabled these by default directly here. --- gcc/rust/lang.opt | 118 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 118 insertions(+) create mode 100644 gcc/rust/lang.opt
diff --git a/gcc/rust/lang.opt b/gcc/rust/lang.opt new file mode 100644 index 00000000000..1130999d277 --- /dev/null +++ b/gcc/rust/lang.opt @@ -0,0 +1,118 @@ +; Options for the Rust front end. +; Copyright (C) 2003-2022 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/>. + +; See the GCC internals manual for a description of this file's format. + +; Please try to keep this file in ASCII collating order. + +; Describes command-line options used by this frontend + +Language +Rust + +I +Rust Joined Separate +; Documented in c.opt + +L +Rust Joined Separate +; Not documented + +Wall +Rust +; Documented in c.opt + +Wunused-variable +Rust Var(warn_unused_variable) Warning +; documented in common.opt + +Wunused-const-variable +Rust Warning Alias(Wunused-const-variable=, 2, 0) +Warn when a const variable is unused. + +Wunused-const-variable= +Rust Joined RejectNegative UInteger Var(warn_unused_const_variable) Warning LangEnabledBy(Rust,Wunused-variable, 1, 0) IntegerRange(0, 2) +Warn when a const variable is unused. + +Wunused-result +Rust Var(warn_unused_result) Warning +Warn if a caller of a function, marked with attribute warn_unused_result, does not use its return value. + +frust-crate= +Rust Joined RejectNegative +-frust-crate=<name> Set the crate name for the compilation + +frust-debug +Rust Var(flag_rust_debug) +Dump various Rust front end internals. + +frust-dump- +Rust Joined RejectNegative +-frust-dump-<type> Dump Rust frontend internal information. + +frust-max-recursion-depth= +Rust RejectNegative Type(int) Var(rust_max_recursion_depth) Init(64) +-frust-max-recursion-depth=integer + +frust-mangling= +Rust Joined RejectNegative Enum(frust_mangling) Var(flag_rust_mangling) +-frust-mangling=[legacy|v0] Choose which version to use for name mangling + +Enum +Name(frust_mangling) Type(int) UnknownError(unknown rust mangling option %qs) + +EnumValue +Enum(frust_mangling) String(legacy) Value(0) + +EnumValue +Enum(frust_mangling) String(v0) Value(1) + +frust-cfg= +Rust Joined RejectNegative +-frust-cfg=<name> Set a config expansion option + +frust-edition= +Rust Joined RejectNegative Enum(frust_edition) Var(flag_rust_edition) +-frust-edition=[2015|2018|2021] Choose which edition to use when compiling rust code + +Enum +Name(frust_edition) Type(int) UnknownError(unknown rust edition %qs) + +EnumValue +Enum(frust_edition) String(2015) Value(0) + +EnumValue +Enum(frust_edition) String(2018) Value(1) + +EnumValue +Enum(frust_edition) String(2021) Value(2) + +frust-embed-metadata +Rust Var(flag_rust_embed_metadata) +Flag to enable embeding metadata directly into object files + +frust-metadata-output= +Rust Joined RejectNegative +-frust-metadata-output=<path.rox> Path to output crate metadata + +o +Rust Joined Separate +; Documented in common.opt + +; This comment is to ensure we retain the blank line above. -- 2.37.2
