diff options
Diffstat (limited to 'libc/build.rs')
-rw-r--r-- | libc/build.rs | 101 |
1 files changed, 0 insertions, 101 deletions
diff --git a/libc/build.rs b/libc/build.rs deleted file mode 100644 index 8452940..0000000 --- a/libc/build.rs +++ /dev/null @@ -1,101 +0,0 @@ -use std::env; -use std::process::Command; -use std::str; - -fn main() { - let rustc_minor_ver = - rustc_minor_version().expect("Failed to get rustc version"); - let rustc_dep_of_std = - std::env::var("CARGO_FEATURE_RUSTC_DEP_OF_STD").is_ok(); - let align_cargo_feature = std::env::var("CARGO_FEATURE_ALIGN").is_ok(); - - if std::env::var("CARGO_FEATURE_USE_STD").is_ok() { - println!( - "cargo:warning=\"libc's use_std cargo feature is deprecated since libc 0.2.55; \ - please consider using the `std` cargo feature instead\"" - ); - } - - if std::env::var("LIBC_CI").is_ok() { - if let Some(12) = which_freebsd() { - println!("cargo:rustc-cfg=freebsd12"); - } - } - - // Rust >= 1.15 supports private module use: - if rustc_minor_ver >= 15 || rustc_dep_of_std { - println!("cargo:rustc-cfg=libc_priv_mod_use"); - } - - // Rust >= 1.19 supports unions: - if rustc_minor_ver >= 19 || rustc_dep_of_std { - println!("cargo:rustc-cfg=libc_union"); - } - - // Rust >= 1.24 supports const mem::size_of: - if rustc_minor_ver >= 24 || rustc_dep_of_std { - println!("cargo:rustc-cfg=libc_const_size_of"); - } - - // Rust >= 1.25 supports repr(align): - if rustc_minor_ver >= 25 || rustc_dep_of_std || align_cargo_feature { - println!("cargo:rustc-cfg=libc_align"); - } - - // Rust >= 1.30 supports `core::ffi::c_void`, so libc can just re-export it. - // Otherwise, it defines an incompatible type to retaining - // backwards-compatibility. - if rustc_minor_ver >= 30 || rustc_dep_of_std { - println!("cargo:rustc-cfg=libc_core_cvoid"); - } - - // Rust >= 1.33 supports repr(packed(N)) - if rustc_minor_ver >= 33 || rustc_dep_of_std { - println!("cargo:rustc-cfg=libc_packedN"); - } -} - -fn rustc_minor_version() -> Option<u32> { - macro_rules! otry { - ($e:expr) => { - match $e { - Some(e) => e, - None => return None, - } - }; - } - - let rustc = otry!(env::var_os("RUSTC")); - let output = otry!(Command::new(rustc).arg("--version").output().ok()); - let version = otry!(str::from_utf8(&output.stdout).ok()); - let mut pieces = version.split('.'); - - if pieces.next() != Some("rustc 1") { - return None; - } - - otry!(pieces.next()).parse().ok() -} - -fn which_freebsd() -> Option<i32> { - let output = std::process::Command::new("freebsd-version").output().ok(); - if output.is_none() { - return None; - } - let output = output.unwrap(); - if !output.status.success() { - return None; - } - - let stdout = String::from_utf8(output.stdout).ok(); - if stdout.is_none() { - return None; - } - let stdout = stdout.unwrap(); - - match &stdout { - s if s.starts_with("11") => Some(11), - s if s.starts_with("12") => Some(12), - _ => None, - } -} |