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rustbuild: Tweak CFLAGS to various libstd pieces 

* Pass `opt_level(2)` when calculating CFLAGS to get the right flags on iOS
* Unconditionally pass `-O2` when compiling libbacktrace

This should...

Close #48903
Close #48906
This commit is contained in:
Alex Crichton 2018-03-12 13:35:46 -07:00
parent e65547d4fa
commit 1999a3fb41
2 changed files with 3 additions and 3 deletions
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4
src/bootstrap/cc_detect.rs
View File

@ -77,7 +77,7 @@ pub fn find(build: &mut Build) {
.collect::<HashSet<_>>();
for target in targets.into_iter() {
let mut cfg = cc::Build::new();
cfg.cargo_metadata(false).opt_level(0).warnings(false).debug(false)
cfg.cargo_metadata(false).opt_level(2).warnings(false).debug(false)
.target(&target).host(&build.build);
if target.contains("msvc") {
cfg.static_crt(true);
@ -109,7 +109,7 @@ pub fn find(build: &mut Build) {
let hosts = build.hosts.iter().cloned().chain(iter::once(build.build)).collect::<HashSet<_>>();
for host in hosts.into_iter() {
let mut cfg = cc::Build::new();
cfg.cargo_metadata(false).opt_level(0).warnings(false).debug(false).cpp(true)
cfg.cargo_metadata(false).opt_level(2).warnings(false).debug(false).cpp(true)
.target(&host).host(&build.build);
let config = build.config.target_config.get(&host);
if let Some(cxx) = config.and_then(|c| c.cxx.as_ref()) {

2
src/libstd/build.rs
View File

@ -98,7 +98,7 @@ fn build_libbacktrace(host: &str, target: &str) -> Result<(), ()> {
.arg("--disable-host-shared")
.arg(format!("--host={}", build_helper::gnu_target(target)))
.arg(format!("--build={}", build_helper::gnu_target(host)))
.env("CFLAGS", env::var("CFLAGS").unwrap_or_default() + " -fvisibility=hidden"));
.env("CFLAGS", env::var("CFLAGS").unwrap_or_default() + " -fvisibility=hidden -O2"));
run(Command::new(build_helper::make(host))
.current_dir(&native.out_dir)