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Add flag for telling the linker to strip debuginfo when building without it

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Signed-off-by: Johannes Löthberg <johannes@kyriasis.com>
This commit is contained in:
Johannes Löthberg 2018-03-20 16:23:31 +01:00
parent b4aa80dd73
commit 2f0dd4a8f0
2 changed files with 14 additions and 1 deletions
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2
src/librustc/session/config.rs
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@ -1292,6 +1292,8 @@ options! {DebuggingOptions, DebuggingSetter, basic_debugging_options,
"format compiler diagnostics in a way that's better suitable for UI testing"), "format compiler diagnostics in a way that's better suitable for UI testing"),
embed_bitcode: bool = (false, parse_bool, [TRACKED], embed_bitcode: bool = (false, parse_bool, [TRACKED],
"embed LLVM bitcode in object files"), "embed LLVM bitcode in object files"),
strip_debuginfo_if_disabled: Option<bool> = (None, parse_opt_bool, [TRACKED],
"tell the linker to strip debuginfo when building without debuginfo enabled."),
} }
pub fn default_lib_output() -> CrateType { pub fn default_lib_output() -> CrateType {

13
src/librustc_trans/back/linker.rs
View file

@ -281,7 +281,18 @@ impl<'a> Linker for GccLinker<'a> {
} }
fn debuginfo(&mut self) { fn debuginfo(&mut self) {
// Don't do anything special here for GNU-style linkers. match self.sess.opts.debuginfo {
DebugInfoLevel::NoDebugInfo => {
// If we are building without debuginfo enabled and we were called with
// `-Zstrip-debuginfo-if-disabled=yes`, tell the linker to strip any debuginfo
// found when linking to get rid of symbols from libstd.
match self.sess.opts.debugging_opts.strip_debuginfo_if_disabled {
Some(true) => { self.linker_arg("-S"); },
_ => {},
}
},
_ => {},
};
} }
fn no_default_libraries(&mut self) { fn no_default_libraries(&mut self) {