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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,63 +1,41 @@ | ||
| fn env(name: &str) -> Option<std::ffi::OsString> { | ||
| let target = std::env::var("TARGET").expect("Cargo didn't provide `TARGET` environment var"); | ||
| let target = target.to_uppercase().replace("-", "_"); | ||
| let prefixed_name = format!("{}_{}", target, name); | ||
| println!("cargo:rerun-if-env-changed={}", prefixed_name); | ||
| match std::env::var_os(prefixed_name) { | ||
| Some(v) => Some(v), | ||
| None => { | ||
| println!("cargo:rerun-if-env-changed={}", name); | ||
| std::env::var_os(name) | ||
| } | ||
| } | ||
| } | ||
| // SPDX-FileCopyrightText: © The `magic-sys` Rust crate authors | ||
| // SPDX-License-Identifier: MIT OR Apache-2.0 | ||
|
|
||
| fn main() { | ||
| if let Some(magic_dir) = env("MAGIC_DIR").map(std::path::PathBuf::from) { | ||
| if !std::path::Path::new(&magic_dir).exists() { | ||
| panic!("Magic library directory {:?} does not exist", magic_dir); | ||
| } | ||
| println!( | ||
| "cargo:rustc-link-search=native={}", | ||
| magic_dir.to_string_lossy() | ||
| ); | ||
|
|
||
| let static_lib = magic_dir.join("libmagic.a"); | ||
| let shared_lib = magic_dir.join("libmagic.so"); | ||
| match env("MAGIC_STATIC").as_ref().and_then(|s| s.to_str()) { | ||
| Some("false") | Some("FALSE") | Some("0") => { | ||
| if !shared_lib.exists() { | ||
| panic!("No libmagic.so found in {:?}", magic_dir); | ||
| } | ||
| println!("cargo:rustc-link-lib=dylib=magic"); | ||
| } | ||
| Some(_) => { | ||
| if !static_lib.exists() { | ||
| panic!("No libmagic.a found in {:?}", magic_dir); | ||
| } | ||
| println!("cargo:rustc-link-lib=static=magic"); | ||
| let lib = pkg_config::Config::new() | ||
| .atleast_version("5.39") | ||
| .probe("libmagic"); | ||
| match lib { | ||
| Err(err) => match err { | ||
| pkg_config::Error::EnvNoPkgConfig(_) => { | ||
| println!("pkg-config skipped: {}", err); | ||
| } | ||
| None => { | ||
| match (static_lib.exists(), shared_lib.exists()) { | ||
| (false, false) => panic!("Neither libmagic.so, nor libmagic.a was found in {:?}", magic_dir), | ||
| (true, false) => println!("cargo:rustc-link-lib=static=magic"), | ||
| (false, true) => println!("cargo:rustc-link-lib=dylib=magic"), | ||
| (true, true) => panic!("Both a static and a shared library were found in {:?}\nspecify a choice with `MAGIC_STATIC=true|false`", magic_dir), | ||
| } | ||
| _ => { | ||
| println!("cargo:warning=pkg-config failed: {}", err); | ||
| } | ||
| }, | ||
| Ok(lib) => { | ||
| println!("pkg-config success: {:?}", lib); | ||
| return; | ||
| } | ||
| } else { | ||
| if let Err(err) = vcpkg::find_package("libmagic") { | ||
| println!("Could not find vcpkg package: {}", err); | ||
| } else if cfg!(windows) { | ||
| // workaround, see https://github.com/robo9k/rust-magic-sys/pull/16#issuecomment-949094327 | ||
| println!("cargo:rustc-link-lib=shlwapi"); | ||
| } | ||
|
|
||
| // vcpkg was successful, don't print anything else | ||
| let lib = vcpkg::find_package("libmagic"); | ||
| match lib { | ||
| Err(err) => match err { | ||
| vcpkg::Error::DisabledByEnv(_) => { | ||
| println!("vcpkg skipped: {}", err); | ||
| } | ||
| _ => { | ||
| println!("cargo:warning=vcpkg failed: {}", err); | ||
| } | ||
| }, | ||
| Ok(lib) => { | ||
| println!("vcpkg success: {:?}", lib); | ||
| return; | ||
| } | ||
|
|
||
| // default fall through: try linking dynamically to just `libmagic` without further config | ||
| println!("cargo:rustc-link-lib=dylib=magic"); | ||
| } | ||
|
|
||
| // if we're reach here, this means that either both pkg-config and vcpkg got skipped or both failed | ||
| panic!("could not link to `libmagic` with neither `pkg-config` nor `vcpkg`"); | ||
| } |