diff options
Diffstat (limited to 'vendor/serde_json/build.rs')
-rw-r--r-- | vendor/serde_json/build.rs | 37 |
1 files changed, 0 insertions, 37 deletions
diff --git a/vendor/serde_json/build.rs b/vendor/serde_json/build.rs index 0e12602e4..1a8c89828 100644 --- a/vendor/serde_json/build.rs +++ b/vendor/serde_json/build.rs @@ -1,6 +1,4 @@ use std::env; -use std::process::Command; -use std::str::{self, FromStr}; fn main() { println!("cargo:rerun-if-changed=build.rs"); @@ -16,39 +14,4 @@ fn main() { println!("cargo:rustc-cfg=limb_width_32"); } } - - let minor = match rustc_minor_version() { - Some(minor) => minor, - None => return, - }; - - // BTreeMap::get_key_value - // https://blog.rust-lang.org/2019/12/19/Rust-1.40.0.html#additions-to-the-standard-library - if minor < 40 { - println!("cargo:rustc-cfg=no_btreemap_get_key_value"); - } - - // BTreeMap::remove_entry - // https://blog.rust-lang.org/2020/07/16/Rust-1.45.0.html#library-changes - if minor < 45 { - println!("cargo:rustc-cfg=no_btreemap_remove_entry"); - } - - // BTreeMap::retain - // https://blog.rust-lang.org/2021/06/17/Rust-1.53.0.html#stabilized-apis - if minor < 53 { - println!("cargo:rustc-cfg=no_btreemap_retain"); - } -} - -fn rustc_minor_version() -> Option<u32> { - let rustc = env::var_os("RUSTC")?; - let output = Command::new(rustc).arg("--version").output().ok()?; - let version = str::from_utf8(&output.stdout).ok()?; - let mut pieces = version.split('.'); - if pieces.next() != Some("rustc 1") { - return None; - } - let next = pieces.next()?; - u32::from_str(next).ok() } |