diff --git a/build-tmp.rs b/build-tmp.rs deleted file mode 100644 index 101f45ac262e9..0000000000000 --- a/build-tmp.rs +++ /dev/null @@ -1,374 +0,0 @@ -use std::env; -use std::ffi::{OsStr, OsString}; -use std::process::{Command, Output}; -use std::str; - -// List of cfgs this build script is allowed to set. The list is needed to support check-cfg, as we -// need to know all the possible cfgs that this script will set. If you need to set another cfg -// make sure to add it to this list as well. -const ALLOWED_CFGS: &'static [&'static str] = &[ - "emscripten_new_stat_abi", - "espidf_time64", - "freebsd10", - "freebsd11", - "freebsd12", - "freebsd13", - "freebsd14", - "freebsd15", - "libc_align", - "libc_cfg_target_vendor", - "libc_const_extern_fn", - "libc_const_extern_fn_unstable", - "libc_const_size_of", - "libc_core_cvoid", - "libc_deny_warnings", - "libc_int128", - "libc_long_array", - "libc_non_exhaustive", - "libc_packedN", - "libc_priv_mod_use", - "libc_ptr_addr_of", - "libc_thread_local", - "libc_underscore_const_names", - "libc_union", - "libc_ctest", -]; - -// Extra values to allow for check-cfg. -const CHECK_CFG_EXTRA: &'static [(&'static str, &'static [&'static str])] = &[ - ("target_os", &["switch", "aix", "ohos", "hurd", "visionos"]), - ("target_env", &["illumos", "wasi", "aix", "ohos"]), - ( - "target_arch", - &["loongarch64", "mips32r6", "mips64r6", "csky"], - ), -]; - -fn main() { - // Avoid unnecessary re-building. - println!("cargo:rerun-if-changed=build.rs"); - - let (rustc_minor_ver, is_nightly) = rustc_minor_nightly(); - let rustc_dep_of_std = env::var("CARGO_FEATURE_RUSTC_DEP_OF_STD").is_ok(); - let align_cargo_feature = env::var("CARGO_FEATURE_ALIGN").is_ok(); - let const_extern_fn_cargo_feature = env::var("CARGO_FEATURE_CONST_EXTERN_FN").is_ok(); - let libc_ci = env::var("LIBC_CI").is_ok(); - let libc_check_cfg = env::var("LIBC_CHECK_CFG").is_ok() || rustc_minor_ver >= 80; - - if 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\"" - ); - } - - // The ABI of libc used by std is backward compatible with FreeBSD 12. - // The ABI of libc from crates.io is backward compatible with FreeBSD 11. - // - // On CI, we detect the actual FreeBSD version and match its ABI exactly, - // running tests to ensure that the ABI is correct. - let which_freebsd = if libc_ci { - which_freebsd().unwrap_or(11) - } else if rustc_dep_of_std { - 12 - } else { - 11 - }; - match which_freebsd { - x if x < 10 => panic!("FreeBSD older than 10 is not supported"), - 10 => set_cfg("freebsd10"), - 11 => set_cfg("freebsd11"), - 12 => set_cfg("freebsd12"), - 13 => set_cfg("freebsd13"), - 14 => set_cfg("freebsd14"), - _ => set_cfg("freebsd15"), - } - - match emcc_version_code() { - Some(v) if (v >= 30142) => set_cfg("emscripten_new_stat_abi"), - // Non-Emscripten or version < 3.1.42. - Some(_) | None => (), - } - - // On CI: deny all warnings - if libc_ci { - set_cfg("libc_deny_warnings"); - } - - // Rust >= 1.15 supports private module use: - if rustc_minor_ver >= 15 || rustc_dep_of_std { - set_cfg("libc_priv_mod_use"); - } - - // Rust >= 1.19 supports unions: - if rustc_minor_ver >= 19 || rustc_dep_of_std { - set_cfg("libc_union"); - } - - // Rust >= 1.24 supports const mem::size_of: - if rustc_minor_ver >= 24 || rustc_dep_of_std { - set_cfg("libc_const_size_of"); - } - - // Rust >= 1.25 supports repr(align): - if rustc_minor_ver >= 25 || rustc_dep_of_std || align_cargo_feature { - set_cfg("libc_align"); - } - - // Rust >= 1.26 supports i128 and u128: - if rustc_minor_ver >= 26 || rustc_dep_of_std { - set_cfg("libc_int128"); - } - - // 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 { - set_cfg("libc_core_cvoid"); - } - - // Rust >= 1.33 supports repr(packed(N)) and cfg(target_vendor). - if rustc_minor_ver >= 33 || rustc_dep_of_std { - set_cfg("libc_packedN"); - set_cfg("libc_cfg_target_vendor"); - } - - // Rust >= 1.40 supports #[non_exhaustive]. - if rustc_minor_ver >= 40 || rustc_dep_of_std { - set_cfg("libc_non_exhaustive"); - } - - // Rust >= 1.47 supports long array: - if rustc_minor_ver >= 47 || rustc_dep_of_std { - set_cfg("libc_long_array"); - } - - if rustc_minor_ver >= 51 || rustc_dep_of_std { - set_cfg("libc_ptr_addr_of"); - } - - // Rust >= 1.37.0 allows underscores as anonymous constant names. - if rustc_minor_ver >= 37 || rustc_dep_of_std { - set_cfg("libc_underscore_const_names"); - } - - // #[thread_local] is currently unstable - if rustc_dep_of_std { - set_cfg("libc_thread_local"); - } - - // Rust >= 1.62.0 allows to use `const_extern_fn` for "Rust" and "C". - if rustc_minor_ver >= 62 { - set_cfg("libc_const_extern_fn"); - } else { - // Rust < 1.62.0 requires a crate feature and feature gate. - if const_extern_fn_cargo_feature { - if !is_nightly || rustc_minor_ver < 40 { - panic!("const-extern-fn requires a nightly compiler >= 1.40"); - } - set_cfg("libc_const_extern_fn_unstable"); - set_cfg("libc_const_extern_fn"); - } - } - - // check-cfg is a nightly cargo/rustc feature to warn when unknown cfgs are used across the - // codebase. libc can configure it if the appropriate environment variable is passed. Since - // rust-lang/rust enforces it, this is useful when using a custom libc fork there. - // - // https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#check-cfg - if libc_check_cfg { - for cfg in ALLOWED_CFGS { - if rustc_minor_ver >= 75 { - println!("cargo:rustc-check-cfg=cfg({})", cfg); - } else { - println!("cargo:rustc-check-cfg=values({})", cfg); - } - } - for &(name, values) in CHECK_CFG_EXTRA { - let values = values.join("\",\""); - if rustc_minor_ver >= 75 { - println!("cargo:rustc-check-cfg=cfg({},values(\"{}\"))", name, values); - } else { - println!("cargo:rustc-check-cfg=values({},\"{}\")", name, values); - } - } - } -} - -fn rustc_version_cmd(is_clippy_driver: bool) -> Output { - let rustc_wrapper = env::var_os("RUSTC_WRAPPER").filter(|w| !w.is_empty()); - let rustc = env::var_os("RUSTC").expect("Failed to get rustc version: missing RUSTC env"); - - let mut cmd = if let Some(wrapper) = rustc_wrapper { - let mut cmd = Command::new(wrapper); - cmd.arg(rustc); - if is_clippy_driver { - cmd.arg("--rustc"); - } - - cmd - } else { - Command::new(rustc) - }; - - cmd.arg("--version"); - - let output = cmd.output().expect("Failed to get rustc version"); - - if !output.status.success() { - panic!( - "failed to run rustc: {}", - String::from_utf8_lossy(output.stderr.as_slice()) - ); - } - - output -} - -fn rustc_minor_nightly() -> (u32, bool) { - macro_rules! otry { - ($e:expr) => { - match $e { - Some(e) => e, - None => panic!("Failed to get rustc version"), - } - }; - } - -<<<<<<< HEAD - let rustc = env::var_os("RUSTC").expect("Failed to get rustc version: missing RUSTC env"); - let mut cmd = match env::var_os("RUSTC_WRAPPER").as_ref() { - Some(wrapper) if !wrapper.is_empty() => { - let mut cmd = Command::new(wrapper); - cmd.arg(rustc); - cmd - } - _ => Command::new(rustc), - }; -||||||| parent of 18b8da967 (Handle rustc version output correctly when `clippy-driver` used) - let rustc = env::var_os("RUSTC").expect("Failed to get rustc version: missing RUSTC env"); - let mut cmd = if let Some(wrapper) = env::var_os("RUSTC_WRAPPER").filter(|w| !w.is_empty()) { - let mut cmd = Command::new(wrapper); - cmd.arg(rustc); - cmd - } else { - Command::new(rustc) - }; -======= - let mut output = rustc_version_cmd(false); ->>>>>>> 18b8da967 (Handle rustc version output correctly when `clippy-driver` used) - -<<<<<<< HEAD - let output = cmd - .arg("--version") - .output() - .ok() - .expect("Failed to get rustc version"); - if !output.status.success() { - panic!( - "failed to run rustc: {}", - String::from_utf8_lossy(output.stderr.as_slice()) - ); -||||||| parent of 18b8da967 (Handle rustc version output correctly when `clippy-driver` used) - let output = cmd - .arg("--version") - .output() - .expect("Failed to get rustc version"); - if !output.status.success() { - panic!( - "failed to run rustc: {}", - String::from_utf8_lossy(output.stderr.as_slice()) - ); -======= - if otry!(str::from_utf8(&output.stdout).ok()).starts_with("clippy") { - output = rustc_version_cmd(true); ->>>>>>> 18b8da967 (Handle rustc version output correctly when `clippy-driver` used) - } - - let version = otry!(str::from_utf8(&output.stdout).ok()); - - let mut pieces = version.split('.'); - - if pieces.next() != Some("rustc 1") { - panic!("Failed to get rustc version"); - } - - let minor = pieces.next(); - - // If `rustc` was built from a tarball, its version string - // will have neither a git hash nor a commit date - // (e.g. "rustc 1.39.0"). Treat this case as non-nightly, - // since a nightly build should either come from CI - // or a git checkout - let nightly_raw = otry!(pieces.next()).split('-').nth(1); - let nightly = nightly_raw - .map(|raw| raw.starts_with("dev") || raw.starts_with("nightly")) - .unwrap_or(false); - let minor = otry!(otry!(minor).parse().ok()); - - (minor, nightly) -} - -fn which_freebsd() -> Option { - 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("10") => Some(10), - s if s.starts_with("11") => Some(11), - s if s.starts_with("12") => Some(12), - s if s.starts_with("13") => Some(13), - s if s.starts_with("14") => Some(14), - s if s.starts_with("15") => Some(15), - _ => None, - } -} - -fn emcc_version_code() -> Option { - let output = std::process::Command::new("emcc") - .arg("-dumpversion") - .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 version = stdout.unwrap(); - - // Some Emscripten versions come with `-git` attached, so split the - // version string also on the `-` char. - let mut pieces = version.trim().split(|c| c == '.' || c == '-'); - - let major = pieces.next().and_then(|x| x.parse().ok()).unwrap_or(0); - let minor = pieces.next().and_then(|x| x.parse().ok()).unwrap_or(0); - let patch = pieces.next().and_then(|x| x.parse().ok()).unwrap_or(0); - - Some(major * 10000 + minor * 100 + patch) -} - -fn set_cfg(cfg: &str) { - if !ALLOWED_CFGS.contains(&cfg) { - panic!("trying to set cfg {}, but it is not in ALLOWED_CFGS", cfg); - } - println!("cargo:rustc-cfg={}", cfg); -}