diff options
Diffstat (limited to 'library/stdarch/crates/assert-instr-macro/build.rs')
-rw-r--r-- | library/stdarch/crates/assert-instr-macro/build.rs | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/library/stdarch/crates/assert-instr-macro/build.rs b/library/stdarch/crates/assert-instr-macro/build.rs new file mode 100644 index 000000000..01ae79660 --- /dev/null +++ b/library/stdarch/crates/assert-instr-macro/build.rs @@ -0,0 +1,13 @@ +use std::env; + +fn main() { + println!("cargo:rerun-if-changed=build.rs"); + let opt_level = env::var("OPT_LEVEL") + .ok() + .and_then(|s| s.parse().ok()) + .unwrap_or(0); + let profile = env::var("PROFILE").unwrap_or_default(); + if profile == "release" || opt_level >= 2 { + println!("cargo:rustc-cfg=optimized"); + } +} |