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add -Z pre-link-arg{,s} to rustc

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This commit adds two unstable flags to `rustc`: `-Z pre-link-arg` and `-Z
pre-link-args`. These are the counterpart of the existing `-C link-arg{,s}`
flags and can be used to pass extra arguments at the *beginning* of the linker
invocation, before the Rust object files are passed.
This commit is contained in:
Jorge Aparicio 2017-05-13 08:21:24 -05:00
parent ef3ec5ece5
commit 94d2c43300
2 changed files with 10 additions and 2 deletions
Download patch file Download diff file Expand all files Collapse all files

8
src/librustc/session/config.rs
View file

@ -824,9 +824,9 @@ options! {CodegenOptions, CodegenSetter, basic_codegen_options,
linker: Option<String> = (None, parse_opt_string, [UNTRACKED],
"system linker to link outputs with"),
link_arg: Vec<String> = (vec![], parse_string_push, [UNTRACKED],
"a single extra argument to pass to the linker (can be used several times)"),
"a single extra argument to append to the linker invocation (can be used several times)"),
link_args: Option<Vec<String>> = (None, parse_opt_list, [UNTRACKED],
"extra arguments to pass to the linker (space separated)"),
"extra arguments to append to the linker invocation (space separated)"),
link_dead_code: bool = (false, parse_bool, [UNTRACKED],
"don't let linker strip dead code (turning it on can be used for code coverage)"),
lto: bool = (false, parse_bool, [TRACKED],
@ -1029,6 +1029,10 @@ options! {DebuggingOptions, DebuggingSetter, basic_debugging_options,
"add a mapping target to the file path remapping config"),
force_unstable_if_unmarked: bool = (false, parse_bool, [TRACKED],
"force all crates to be `rustc_private` unstable"),
pre_link_arg: Vec<String> = (vec![], parse_string_push, [UNTRACKED],
"a single extra argument to prepend the linker invocation (can be used several times)"),
pre_link_args: Option<Vec<String>> = (None, parse_opt_list, [UNTRACKED],
"extra arguments to prepend to the linker invocation (space separated)"),
}
pub fn default_lib_output() -> CrateType {

4
src/librustc_trans/back/link.rs
View file

@ -714,6 +714,10 @@ fn link_natively(sess: &Session,
if let Some(args) = sess.target.target.options.pre_link_args.get(&flavor) {
cmd.args(args);
}
if let Some(ref args) = sess.opts.debugging_opts.pre_link_args {
cmd.args(args);
}
cmd.args(&sess.opts.debugging_opts.pre_link_arg);
let pre_link_objects = if crate_type == config::CrateTypeExecutable {
&sess.target.target.options.pre_link_objects_exe