[−][src]Struct rustc_target::spec::TargetOptions
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)
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Optional aspects of a target specification.
This has an implementation of Default
, see each field for what the default is. In general,
these try to take "minimal defaults" that don't assume anything about the runtime they run in.
Fields
is_builtin: bool
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Whether the target is built-in or loaded from a custom target specification.
linker: Option<String>
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Linker to invoke
lld_flavor: LldFlavor
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LLD flavor
pre_link_args: LinkArgs
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Linker arguments that are passed before any user-defined libraries.
pre_link_args_crt: LinkArgs
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pre_link_objects_exe: Vec<String>
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Objects to link before all others, always found within the sysroot folder.
pre_link_objects_exe_crt: Vec<String>
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pre_link_objects_dll: Vec<String>
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late_link_args: LinkArgs
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Linker arguments that are unconditionally passed after any user-defined but before post_link_objects. Standard platform libraries that should be always be linked to, usually go here.
post_link_objects: Vec<String>
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Objects to link after all others, always found within the sysroot folder.
post_link_objects_crt: Vec<String>
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post_link_args: LinkArgs
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Linker arguments that are unconditionally passed after any user-defined libraries.
link_env: Vec<(String, String)>
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Environment variables to be set before invoking the linker.
asm_args: Vec<String>
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Extra arguments to pass to the external assembler (when used)
cpu: String
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instead?
Default CPU to pass to LLVM. Corresponds to llc -mcpu=$cpu
. Defaults
to "generic".
features: String
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Default target features to pass to LLVM. These features will always be
passed, and cannot be disabled even via -C
. Corresponds to llc -mattr=$features
.
dynamic_linking: bool
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Whether dynamic linking is available on this target. Defaults to false.
only_cdylib: bool
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If dynamic linking is available, whether only cdylibs are supported.
executables: bool
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Whether executables are available on this target. iOS, for example, only allows static libraries. Defaults to false.
relocation_model: String
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Relocation model to use in object file. Corresponds to llc -relocation-model=$relocation_model
. Defaults to "pic".
code_model: Option<String>
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Code model to use. Corresponds to llc -code-model=$code_model
.
tls_model: String
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TLS model to use. Options are "global-dynamic" (default), "local-dynamic", "initial-exec" and "local-exec". This is similar to the -ftls-model option in GCC/Clang.
disable_redzone: bool
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Do not emit code that uses the "red zone", if the ABI has one. Defaults to false.
eliminate_frame_pointer: bool
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Eliminate frame pointers from stack frames if possible. Defaults to true.
function_sections: bool
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Emit each function in its own section. Defaults to true.
dll_prefix: String
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String to prepend to the name of every dynamic library. Defaults to "lib".
dll_suffix: String
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String to append to the name of every dynamic library. Defaults to ".so".
exe_suffix: String
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String to append to the name of every executable.
staticlib_prefix: String
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String to prepend to the name of every static library. Defaults to "lib".
staticlib_suffix: String
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String to append to the name of every static library. Defaults to ".a".
target_family: Option<String>
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OS family to use for conditional compilation. Valid options: "unix", "windows".
abi_return_struct_as_int: bool
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Whether the target toolchain's ABI supports returning small structs as an integer.
is_like_osx: bool
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Whether the target toolchain is like macOS's. Only useful for compiling against iOS/macOS,
in particular running dsymutil and some other stuff like -dead_strip
. Defaults to false.
is_like_solaris: bool
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Whether the target toolchain is like Solaris's. Only useful for compiling against Illumos/Solaris, as they have a different set of linker flags. Defaults to false.
is_like_windows: bool
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Whether the target toolchain is like Windows'. Only useful for compiling against Windows, only really used for figuring out how to find libraries, since Windows uses its own library naming convention. Defaults to false.
is_like_msvc: bool
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is_like_android: bool
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Whether the target toolchain is like Android's. Only useful for compiling against Android. Defaults to false.
is_like_emscripten: bool
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Whether the target toolchain is like Emscripten's. Only useful for compiling with Emscripten toolchain. Defaults to false.
linker_is_gnu: bool
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Whether the linker support GNU-like arguments such as -O. Defaults to false.
allows_weak_linkage: bool
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The MinGW toolchain has a known issue that prevents it from correctly handling COFF object files with more than 215 sections. Since each weak symbol needs its own COMDAT section, weak linkage implies a large number sections that easily exceeds the given limit for larger codebases. Consequently we want a way to disallow weak linkage on some platforms.
has_rpath: bool
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Whether the linker support rpaths or not. Defaults to false.
no_default_libraries: bool
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Whether to disable linking to the default libraries, typically corresponds
to -nodefaultlibs
. Defaults to true.
position_independent_executables: bool
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Dynamically linked executables can be compiled as position independent if the default relocation model of position independent code is not changed. This is a requirement to take advantage of ASLR, as otherwise the functions in the executable are not randomized and can be used during an exploit of a vulnerability in any code.
relro_level: RelroLevel
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Either partial, full, or off. Full RELRO makes the dynamic linker resolve all symbols at startup and marks the GOT read-only before starting the program, preventing overwriting the GOT.
archive_format: String
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Format that archives should be emitted in. This affects whether we use LLVM to assemble an archive or fall back to the system linker, and currently only "gnu" is used to fall into LLVM. Unknown strings cause the system linker to be used.
allow_asm: bool
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Is asm!() allowed? Defaults to true.
custom_unwind_resume: bool
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Whether the target uses a custom unwind resumption routine.
By default LLVM lowers resume
instructions into calls to _Unwind_Resume
defined in libgcc. If this option is enabled, the target must provide
eh_unwind_resume
lang item.
exe_allocation_crate: Option<String>
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If necessary, a different crate to link exe allocators by default
has_elf_tls: bool
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Flag indicating whether ELF TLS (e.g. #[thread_local]) is available for this target.
obj_is_bitcode: bool
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no_integrated_as: bool
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min_atomic_width: Option<u64>
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Don't use this field; instead use the .min_atomic_width()
method.
max_atomic_width: Option<u64>
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Don't use this field; instead use the .max_atomic_width()
method.
atomic_cas: bool
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Whether the target supports atomic CAS operations natively
panic_strategy: PanicStrategy
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Panic strategy: "unwind" or "abort"
abi_blacklist: Vec<Abi>
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A blacklist of ABIs unsupported by the current target. Note that generic ABIs are considered to be supported on all platforms and cannot be blacklisted.
crt_static_allows_dylibs: bool
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Whether or not linking dylibs to a static CRT is allowed.
crt_static_default: bool
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Whether or not the CRT is statically linked by default.
crt_static_respected: bool
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Whether or not crt-static is respected by the compiler (or is a no-op).
stack_probes: bool
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Whether or not stack probes (__rust_probestack) are enabled
min_global_align: Option<u64>
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The minimum alignment for global symbols.
default_codegen_units: Option<u64>
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Default number of codegen units to use in debug mode
trap_unreachable: bool
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Whether to generate trap instructions in places where optimization would otherwise produce control flow that falls through into unrelated memory.
requires_lto: bool
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This target requires everything to be compiled with LTO to emit a final executable, aka there is no native linker for this target.
singlethread: bool
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This target has no support for threads.
no_builtins: bool
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Whether library functions call lowering/optimization is disabled in LLVM for this target unconditionally.
i128_lowering: bool
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Whether to lower 128-bit operations to compiler_builtins calls. Use if your backend only supports 64-bit and smaller math.
codegen_backend: String
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The codegen backend to use for this target, typically "llvm"
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The default visibility for symbols in this target should be "hidden" rather than "default"
embed_bitcode: bool
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Whether or not bitcode is embedded in object files
emit_debug_gdb_scripts: bool
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Whether a .debug_gdb_scripts section will be added to the output object file
requires_uwtable: bool
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Whether or not to unconditionally uwtable
attributes on functions,
typically because the platform needs to unwind for things like stack
unwinders.
Trait Implementations
impl PartialEq for TargetOptions
[src]
impl PartialEq for TargetOptions
fn eq(&self, other: &TargetOptions) -> bool
[src]
fn eq(&self, other: &TargetOptions) -> bool
This method tests for self
and other
values to be equal, and is used by ==
. Read more
fn ne(&self, other: &TargetOptions) -> bool
[src]
fn ne(&self, other: &TargetOptions) -> bool
This method tests for !=
.
impl Clone for TargetOptions
[src]
impl Clone for TargetOptions
fn clone(&self) -> TargetOptions
[src]
fn clone(&self) -> TargetOptions
Returns a copy of the value. Read more
fn clone_from(&mut self, source: &Self)
1.0.0[src]
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source
. Read more
impl Debug for TargetOptions
[src]
impl Debug for TargetOptions
fn fmt(&self, f: &mut Formatter) -> Result
[src]
fn fmt(&self, f: &mut Formatter) -> Result
Formats the value using the given formatter. Read more
impl Default for TargetOptions
[src]
impl Default for TargetOptions
fn default() -> TargetOptions
[src]
fn default() -> TargetOptions
Create a set of "sane defaults" for any target. This is still incomplete, and if used for compilation, will certainly not work.
Auto Trait Implementations
impl Send for TargetOptions
impl Send for TargetOptions
impl Sync for TargetOptions
impl Sync for TargetOptions
Blanket Implementations
impl<T> ToOwned for T where
T: Clone,
[src]
impl<T> ToOwned for T where
T: Clone,
type Owned = T
fn to_owned(&self) -> T
[src]
fn to_owned(&self) -> T
Creates owned data from borrowed data, usually by cloning. Read more
fn clone_into(&self, target: &mut T)
[src]
fn clone_into(&self, target: &mut T)
🔬 This is a nightly-only experimental API. (toowned_clone_into
)
recently added
Uses borrowed data to replace owned data, usually by cloning. Read more
impl<T> From for T
[src]
impl<T> From for T
impl<T, U> Into for T where
U: From<T>,
[src]
impl<T, U> Into for T where
U: From<T>,
impl<T, U> TryFrom for T where
T: From<U>,
[src]
impl<T, U> TryFrom for T where
T: From<U>,
type Error = !
try_from
)The type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
[src]
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
try_from
)Performs the conversion.
impl<T> Borrow for T where
T: ?Sized,
[src]
impl<T> Borrow for T where
T: ?Sized,
impl<T, U> TryInto for T where
U: TryFrom<T>,
[src]
impl<T, U> TryInto for T where
U: TryFrom<T>,
type Error = <U as TryFrom<T>>::Error
try_from
)The type returned in the event of a conversion error.
fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>
[src]
fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>
try_from
)Performs the conversion.
impl<T> BorrowMut for T where
T: ?Sized,
[src]
impl<T> BorrowMut for T where
T: ?Sized,
fn borrow_mut(&mut self) -> &mut T
[src]
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
impl<T> Any for T where
T: 'static + ?Sized,
[src]
impl<T> Any for T where
T: 'static + ?Sized,
fn get_type_id(&self) -> TypeId
[src]
fn get_type_id(&self) -> TypeId
🔬 This is a nightly-only experimental API. (get_type_id
)
this method will likely be replaced by an associated static
Gets the TypeId
of self
. Read more
impl<E> SpecializationError for E
[src]
impl<E> SpecializationError for E
fn not_found<S, T>(trait_name: &'static str, method_name: &'static str) -> E where
T: ?Sized,
[src]
fn not_found<S, T>(trait_name: &'static str, method_name: &'static str) -> E where
T: ?Sized,
🔬 This is a nightly-only experimental API. (rustc_private
)
this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via Cargo.toml
instead?
Create an error for a missing method specialization. Defaults to panicking with type, trait & method names. S
is the encoder/decoder state type, T
is the type being encoded/decoded, and the arguments are the names of the trait and method that should've been overridden. Read more