Module helpers

Various utility functions used throughout bootstrap.

Simple things like testing the various filesystem operations here and there, not a lot of interesting happenings here unfortunately.

Re-exports

• pub use crate::utils::shared_helpers::dylib_path;
• pub use crate::utils::shared_helpers::dylib_path_var;
• pub use t;

Structs

• HashStamp
• TimeIt

Enums

• LldThreads

Functions

• add_dylib_path
  Adds a list of lookup paths to cmd’s dynamic library lookup path. If the dylib_path_var is already set for this cmd, the old value will be overwritten!
• add_link_lib_path
  Adds a list of lookup paths to cmd’s link library lookup path.
• add_rustdoc_cargo_linker_args
• check_cfg_arg
  Create a --check-cfg argument invocation for a given name and it’s values.
• check_run
• dir_is_empty
• dir_up_to_date 🔒
• exe
• extract_beta_rev
  Extract the beta revision from the full version string.
• forcing_clang_based_tests
• get_clang_cl_resource_dir
  Adapted from https://github.com/llvm/llvm-project/blob/782e91224601e461c019e0a4573bbccc6094fbcd/llvm/cmake/modules/HandleLLVMOptions.cmake#L1058-L1079
• git
  Prepares BootstrapCommand that runs git inside the source directory if given.
• hex_encode
  Converts T into a hexadecimal String.
• is_aix_shared_archive 🔒
• is_debug_info
  Returns true if the file name given looks like a debug info file
• is_dylib
  Returns true if the file name given looks like a dynamic library.
• is_valid_test_suite_arg
• libdir
  Returns the corresponding relative library directory that the compiler’s dylibs will be found in.
• link_lib_path 🔒
  Parses the link_lib_path_var() environment variable, returning a list of paths that are members of this lookup path.
• link_lib_path_var 🔒
  Returns the environment variable which the link library lookup path resides in for this platform.
• linker_args
  Returns the linker arguments for rustc/rustdoc for the given builder and target.
• linker_flags
  Returns the linker arguments for rustc/rustdoc for the given builder and target, without the -Clinker flag.
• lld_flag_no_threads 🔒
  Returns a flag that configures LLD to use only a single thread. If we use an external LLD, we need to find out which version is it to know which flag should we pass to it (LLD older than version 10 had a different flag).
• make
• move_file
  Rename a file if from and to are in the same filesystem or copy and remove the file otherwise
• mtime
  Returns the last-modified time for path, or zero if it doesn’t exist.
• output
• program_out_of_date 🔒
  Used for download caching
• set_file_times
  Sets the file times for a given file at path.
• start_process
  Spawn a process and return a closure that will wait for the process to finish and then return its output. This allows the spawned process to do work without immediately blocking bootstrap.
• symlink_dir
  Symlinks two directories, using junctions on Windows and normal symlinks on Unix.
• target_supports_cranelift_backend
• timeit
  Returns an RAII structure that prints out how long it took to drop.
• unhashed_basename
  Returns the filename without the hash prefix added by the cc crate.
• up_to_date
  Returns true if dst is up to date given that the file or files in src are used to generate it.
• use_host_linker