1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167

use std::env;
use std::fs;
use std::path::{Path, PathBuf};
use std::process::Command;

pub fn source_dir() -> PathBuf {
    Path::new(env!("CARGO_MANIFEST_DIR")).join("boringssl")
}

pub struct Build {
    out_dir: Option<PathBuf>,
    msvc: bool,
}

pub struct Artifacts {
    root_dir: PathBuf,
    libs: Vec<String>,
}

impl Build {
    pub fn new() -> Build {
        Build {
            out_dir: env::var_os("OUT_DIR").map(|s| PathBuf::from(s).join("boringssl-build")),
            msvc: env::var("TARGET").map_or(false, |t| t.contains("msvc")),
        }
    }

    pub fn out_dir<P: AsRef<Path>>(&mut self, path: P) -> &mut Build {
        self.out_dir = Some(path.as_ref().to_path_buf());
        self
    }

    fn configure_asm_support(&self, cfg: &mut cmake::Config) {
        if !self.msvc {
            return;
        }

        let output = Command::new("cmake")
            .arg("--version")
            .output()
            .expect("Can't find cmake.");
        let output = String::from_utf8_lossy(&output.stdout);
        let uptodate = output
            .split_whitespace()
            .skip(2)
            .next()
            .map_or(false, |version| {
                let vers: Vec<u32> = match version.split(".").map(|n| n.parse()).collect() {
                    Ok(v) => v,
                    Err(_) => return false,
                };
                // Visual Studio build with assembly optimizations is broken for older version of cmake
                vers.len() == 3 && vers[0] >= 3 && vers[1] >= 13
            });
        if uptodate {
            let check_exist = |cmd, arg| {
                Command::new(cmd)
                    .arg(arg)
                    .status()
                    .map_or(false, |s| s.success())
            };
            if check_exist("yasm", "--version") || check_exist("nasm", "-v") {
                return;
            }
        }

        cfg.define("OPENSSL_NO_ASM", "ON");
    }

    pub fn build(&mut self) -> Artifacts {
        let out_dir = self.out_dir.as_ref().expect("OUT_DIR not set");

        let build_dir = out_dir.join("build");
        if build_dir.exists() {
            fs::remove_dir_all(&build_dir).unwrap();
        }
        fs::create_dir_all(&build_dir).unwrap();

        let mut cfg = cmake::Config::new(source_dir());
        self.configure_asm_support(&mut cfg);
        cfg.out_dir(&out_dir);
        cfg.build_target("ssl").build();
        cfg.build_target("crypto").build();

        let header_dir = out_dir.join("include");
        if header_dir.exists() {
            fs::remove_dir_all(&header_dir).unwrap();
        }
        fs::create_dir_all(&header_dir).unwrap();

        let include_dir = source_dir().join("src").join("include");
        cp_r(&include_dir, &header_dir);

        let lib_dir = out_dir.join("lib");
        if lib_dir.exists() {
            fs::remove_dir_all(&lib_dir).unwrap();
        }
        let from_dir = if self.msvc {
            let profile = match &*env::var("PROFILE").unwrap() {
                "bench" | "release" => "Release",
                _ => "Debug",
            };
            build_dir.join(profile)
        } else {
            build_dir
        };
        fs::rename(&from_dir, &lib_dir).unwrap();

        Artifacts {
            root_dir: self.out_dir.clone().unwrap(),
            libs: vec!["ssl".to_string(), "crypto".to_string()],
        }
    }
}

fn cp_r(src: impl AsRef<Path>, dst: impl AsRef<Path>) {
    for f in fs::read_dir(src.as_ref()).unwrap() {
        let f = f.unwrap();
        let path = f.path();
        let name = path.file_name().unwrap();

        // Skip git metadata as it's been known to cause issues (#26) and
        // otherwise shouldn't be required
        if name.to_str() == Some(".git") {
            continue;
        }

        let dst = dst.as_ref().join(name);
        if f.file_type().unwrap().is_dir() {
            fs::create_dir_all(&dst).unwrap();
            cp_r(&path, &dst);
        } else {
            let _ = fs::remove_file(&dst);
            fs::copy(&path, &dst).unwrap();
        }
    }
}

impl Artifacts {
    pub fn include_dir(&self) -> PathBuf {
        self.root_dir.join("include")
    }

    pub fn lib_dir(&self) -> PathBuf {
        self.root_dir.join("lib")
    }

    pub fn root_dir(&self) -> &Path {
        &self.root_dir
    }

    pub fn libs(&self) -> &[String] {
        &self.libs
    }

    pub fn print_cargo_metadata(&self) {
        println!(
            "cargo:rustc-link-search=native={}",
            self.lib_dir().display()
        );
        for lib in self.libs.iter() {
            println!("cargo:rustc-link-lib=static={}", lib);
        }
        println!("cargo:include={}", self.include_dir().display());
        println!("cargo:lib={}", self.lib_dir().display());
    }
}