Initial vendor packages

Signed-off-by: Valentin Popov <valentin@popov.link>

vendor/cc/tests/cc_env.rs

@@ -0,0 +1,118 @@
+use std::env;
+use std::ffi::OsString;
+use std::path::Path;
+
+mod support;
+use crate::support::Test;
+
+#[test]
+fn main() {
+    ccache();
+    distcc();
+    ccache_spaces();
+    ccache_env_flags();
+    leading_spaces();
+    extra_flags();
+    path_to_ccache();
+    more_spaces();
+}
+
+fn ccache() {
+    let test = Test::gnu();
+
+    env::set_var("CC", "ccache cc");
+    let compiler = test.gcc().file("foo.c").get_compiler();
+
+    assert_eq!(compiler.path(), Path::new("cc"));
+}
+
+fn ccache_spaces() {
+    let test = Test::gnu();
+    test.shim("ccache");
+
+    env::set_var("CC", "ccache        cc");
+    let compiler = test.gcc().file("foo.c").get_compiler();
+    assert_eq!(compiler.path(), Path::new("cc"));
+}
+
+fn distcc() {
+    let test = Test::gnu();
+    test.shim("distcc");
+
+    env::set_var("CC", "distcc cc");
+    let compiler = test.gcc().file("foo.c").get_compiler();
+    assert_eq!(compiler.path(), Path::new("cc"));
+}
+
+fn ccache_env_flags() {
+    let test = Test::gnu();
+    test.shim("ccache");
+
+    env::set_var("CC", "ccache lol-this-is-not-a-compiler");
+    let compiler = test.gcc().file("foo.c").get_compiler();
+    assert_eq!(compiler.path(), Path::new("lol-this-is-not-a-compiler"));
+    assert_eq!(
+        compiler.cc_env(),
+        OsString::from("ccache lol-this-is-not-a-compiler")
+    );
+    assert!(
+        compiler
+            .cflags_env()
+            .into_string()
+            .unwrap()
+            .contains("ccache")
+            == false
+    );
+    assert!(
+        compiler
+            .cflags_env()
+            .into_string()
+            .unwrap()
+            .contains(" lol-this-is-not-a-compiler")
+            == false
+    );
+
+    env::set_var("CC", "");
+}
+
+fn leading_spaces() {
+    let test = Test::gnu();
+    test.shim("ccache");
+
+    env::set_var("CC", " test ");
+    let compiler = test.gcc().file("foo.c").get_compiler();
+    assert_eq!(compiler.path(), Path::new("test"));
+
+    env::set_var("CC", "");
+}
+
+fn extra_flags() {
+    let test = Test::gnu();
+    test.shim("ccache");
+
+    env::set_var("CC", "ccache cc -m32");
+    let compiler = test.gcc().file("foo.c").get_compiler();
+    assert_eq!(compiler.path(), Path::new("cc"));
+}
+
+fn path_to_ccache() {
+    let test = Test::gnu();
+    test.shim("ccache");
+
+    env::set_var("CC", "/path/to/ccache.exe cc -m32");
+    let compiler = test.gcc().file("foo.c").get_compiler();
+    assert_eq!(compiler.path(), Path::new("cc"));
+    assert_eq!(
+        compiler.cc_env(),
+        OsString::from("/path/to/ccache.exe cc -m32"),
+    );
+}
+
+fn more_spaces() {
+    let test = Test::gnu();
+    test.shim("ccache");
+
+    env::set_var("CC", "cc -m32");
+    let compiler = test.gcc().file("foo.c").get_compiler();
+    assert_eq!(compiler.path(), Path::new("cc"));
+}

vendor/cc/tests/cflags.rs

@@ -0,0 +1,15 @@
+mod support;
+
+use crate::support::Test;
+use std::env;
+
+/// This test is in its own module because it modifies the environment and would affect other tests
+/// when run in parallel with them.
+#[test]
+fn gnu_no_warnings_if_cflags() {
+    env::set_var("CFLAGS", "-arbitrary");
+    let test = Test::gnu();
+    test.gcc().file("foo.c").compile("foo");
+
+    test.cmd(0).must_not_have("-Wall").must_not_have("-Wextra");
+}

vendor/cc/tests/cxxflags.rs

@@ -0,0 +1,15 @@
+mod support;
+
+use crate::support::Test;
+use std::env;
+
+/// This test is in its own module because it modifies the environment and would affect other tests
+/// when run in parallel with them.
+#[test]
+fn gnu_no_warnings_if_cxxflags() {
+    env::set_var("CXXFLAGS", "-arbitrary");
+    let test = Test::gnu();
+    test.gcc().file("foo.cpp").cpp(true).compile("foo");
+
+    test.cmd(0).must_not_have("-Wall").must_not_have("-Wextra");
+}

vendor/cc/tests/support/mod.rs

@@ -0,0 +1,172 @@
+#![allow(dead_code)]
+
+use std::env;
+use std::ffi::{OsStr, OsString};
+use std::fs::{self, File};
+use std::io;
+use std::io::prelude::*;
+use std::path::{Path, PathBuf};
+
+use cc;
+use tempfile::{Builder, TempDir};
+
+pub struct Test {
+    pub td: TempDir,
+    pub gcc: PathBuf,
+    pub msvc: bool,
+}
+
+pub struct Execution {
+    args: Vec<String>,
+}
+
+impl Test {
+    pub fn new() -> Test {
+        // This is ugly: `sccache` needs to introspect the compiler it is
+        // executing, as it adjusts its behavior depending on the
+        // language/compiler. This crate's test driver uses mock compilers that
+        // are obviously not supported by sccache, so the tests fail if
+        // RUSTC_WRAPPER is set. rust doesn't build test dependencies with
+        // the `test` feature enabled, so we can't conditionally disable the
+        // usage of `sccache` if running in a test environment, at least not
+        // without setting an environment variable here and testing for it
+        // there. Explicitly deasserting RUSTC_WRAPPER here seems to be the
+        // lesser of the two evils.
+        env::remove_var("RUSTC_WRAPPER");
+
+        let mut gcc = PathBuf::from(env::current_exe().unwrap());
+        gcc.pop();
+        if gcc.ends_with("deps") {
+            gcc.pop();
+        }
+        let td = Builder::new().prefix("gcc-test").tempdir_in(&gcc).unwrap();
+        gcc.push(format!("gcc-shim{}", env::consts::EXE_SUFFIX));
+        Test {
+            td: td,
+            gcc: gcc,
+            msvc: false,
+        }
+    }
+
+    pub fn gnu() -> Test {
+        let t = Test::new();
+        t.shim("cc").shim("c++").shim("ar");
+        t
+    }
+
+    pub fn msvc() -> Test {
+        let mut t = Test::new();
+        t.shim("cl").shim("lib.exe");
+        t.msvc = true;
+        t
+    }
+
+    pub fn shim(&self, name: &str) -> &Test {
+        let name = if name.ends_with(env::consts::EXE_SUFFIX) {
+            name.to_string()
+        } else {
+            format!("{}{}", name, env::consts::EXE_SUFFIX)
+        };
+        link_or_copy(&self.gcc, self.td.path().join(name)).unwrap();
+        self
+    }
+
+    pub fn gcc(&self) -> cc::Build {
+        let mut cfg = cc::Build::new();
+        let target = if self.msvc {
+            "x86_64-pc-windows-msvc"
+        } else {
+            "x86_64-unknown-linux-gnu"
+        };
+
+        cfg.target(target)
+            .host(target)
+            .opt_level(2)
+            .debug(false)
+            .out_dir(self.td.path())
+            .__set_env("PATH", self.path())
+            .__set_env("GCCTEST_OUT_DIR", self.td.path());
+        if self.msvc {
+            cfg.compiler(self.td.path().join("cl"));
+            cfg.archiver(self.td.path().join("lib.exe"));
+        }
+        cfg
+    }
+
+    fn path(&self) -> OsString {
+        let mut path = env::split_paths(&env::var_os("PATH").unwrap()).collect::<Vec<_>>();
+        path.insert(0, self.td.path().to_owned());
+        env::join_paths(path).unwrap()
+    }
+
+    pub fn cmd(&self, i: u32) -> Execution {
+        let mut s = String::new();
+        File::open(self.td.path().join(format!("out{}", i)))
+            .unwrap()
+            .read_to_string(&mut s)
+            .unwrap();
+        Execution {
+            args: s.lines().map(|s| s.to_string()).collect(),
+        }
+    }
+}
+
+impl Execution {
+    pub fn must_have<P: AsRef<OsStr>>(&self, p: P) -> &Execution {
+        if !self.has(p.as_ref()) {
+            panic!("didn't find {:?} in {:?}", p.as_ref(), self.args);
+        } else {
+            self
+        }
+    }
+
+    pub fn must_not_have<P: AsRef<OsStr>>(&self, p: P) -> &Execution {
+        if self.has(p.as_ref()) {
+            panic!("found {:?}", p.as_ref());
+        } else {
+            self
+        }
+    }
+
+    pub fn has(&self, p: &OsStr) -> bool {
+        self.args.iter().any(|arg| OsStr::new(arg) == p)
+    }
+
+    pub fn must_have_in_order(&self, before: &str, after: &str) -> &Execution {
+        let before_position = self
+            .args
+            .iter()
+            .rposition(|x| OsStr::new(x) == OsStr::new(before));
+        let after_position = self
+            .args
+            .iter()
+            .rposition(|x| OsStr::new(x) == OsStr::new(after));
+        match (before_position, after_position) {
+            (Some(b), Some(a)) if b < a => {}
+            (b, a) => panic!(
+                "{:?} (last position: {:?}) did not appear before {:?} (last position: {:?})",
+                before, b, after, a
+            ),
+        };
+        self
+    }
+}
+
+/// Hard link an executable or copy it if that fails.
+///
+/// We first try to hard link an executable to save space. If that fails (as on Windows with
+/// different mount points, issue #60), we copy.
+#[cfg(not(target_os = "macos"))]
+fn link_or_copy<P: AsRef<Path>, Q: AsRef<Path>>(from: P, to: Q) -> io::Result<()> {
+    let from = from.as_ref();
+    let to = to.as_ref();
+    fs::hard_link(from, to).or_else(|_| fs::copy(from, to).map(|_| ()))
+}
+
+/// Copy an executable.
+///
+/// On macOS, hard linking the executable leads to strange failures (issue #419), so we just copy.
+#[cfg(target_os = "macos")]
+fn link_or_copy<P: AsRef<Path>, Q: AsRef<Path>>(from: P, to: Q) -> io::Result<()> {
+    fs::copy(from, to).map(|_| ())
+}

vendor/cc/tests/test.rs

@@ -0,0 +1,477 @@
+use crate::support::Test;
+
+mod support;
+
+// Some tests check that a flag is *not* present.  These tests might fail if the flag is set in the
+// CFLAGS or CXXFLAGS environment variables.  This function clears the CFLAGS and CXXFLAGS
+// variables to make sure that the tests can run correctly.
+fn reset_env() {
+    std::env::set_var("CFLAGS", "");
+    std::env::set_var("CXXFLAGS", "");
+}
+
+#[test]
+fn gnu_smoke() {
+    reset_env();
+
+    let test = Test::gnu();
+    test.gcc().file("foo.c").compile("foo");
+
+    test.cmd(0)
+        .must_have("-O2")
+        .must_have("foo.c")
+        .must_not_have("-gdwarf-4")
+        .must_have("-c")
+        .must_have("-ffunction-sections")
+        .must_have("-fdata-sections");
+    test.cmd(1).must_have(test.td.path().join("foo.o"));
+}
+
+#[test]
+fn gnu_opt_level_1() {
+    reset_env();
+
+    let test = Test::gnu();
+    test.gcc().opt_level(1).file("foo.c").compile("foo");
+
+    test.cmd(0).must_have("-O1").must_not_have("-O2");
+}
+
+#[test]
+fn gnu_opt_level_s() {
+    reset_env();
+
+    let test = Test::gnu();
+    test.gcc().opt_level_str("s").file("foo.c").compile("foo");
+
+    test.cmd(0)
+        .must_have("-Os")
+        .must_not_have("-O1")
+        .must_not_have("-O2")
+        .must_not_have("-O3")
+        .must_not_have("-Oz");
+}
+
+#[test]
+fn gnu_debug() {
+    let test = Test::gnu();
+    test.gcc().debug(true).file("foo.c").compile("foo");
+    test.cmd(0).must_have("-gdwarf-4");
+
+    let test = Test::gnu();
+    test.gcc()
+        .target("x86_64-apple-darwin")
+        .debug(true)
+        .file("foo.c")
+        .compile("foo");
+    test.cmd(0).must_have("-gdwarf-2");
+}
+
+#[test]
+fn gnu_debug_fp_auto() {
+    let test = Test::gnu();
+    test.gcc().debug(true).file("foo.c").compile("foo");
+    test.cmd(0).must_have("-gdwarf-4");
+    test.cmd(0).must_have("-fno-omit-frame-pointer");
+}
+
+#[test]
+fn gnu_debug_fp() {
+    let test = Test::gnu();
+    test.gcc().debug(true).file("foo.c").compile("foo");
+    test.cmd(0).must_have("-gdwarf-4");
+    test.cmd(0).must_have("-fno-omit-frame-pointer");
+}
+
+#[test]
+fn gnu_debug_nofp() {
+    reset_env();
+
+    let test = Test::gnu();
+    test.gcc()
+        .debug(true)
+        .force_frame_pointer(false)
+        .file("foo.c")
+        .compile("foo");
+    test.cmd(0).must_have("-gdwarf-4");
+    test.cmd(0).must_not_have("-fno-omit-frame-pointer");
+
+    let test = Test::gnu();
+    test.gcc()
+        .force_frame_pointer(false)
+        .debug(true)
+        .file("foo.c")
+        .compile("foo");
+    test.cmd(0).must_have("-gdwarf-4");
+    test.cmd(0).must_not_have("-fno-omit-frame-pointer");
+}
+
+#[test]
+fn gnu_warnings_into_errors() {
+    let test = Test::gnu();
+    test.gcc()
+        .warnings_into_errors(true)
+        .file("foo.c")
+        .compile("foo");
+
+    test.cmd(0).must_have("-Werror");
+}
+
+#[test]
+fn gnu_warnings() {
+    let test = Test::gnu();
+    test.gcc()
+        .warnings(true)
+        .flag("-Wno-missing-field-initializers")
+        .file("foo.c")
+        .compile("foo");
+
+    test.cmd(0).must_have("-Wall").must_have("-Wextra");
+}
+
+#[test]
+fn gnu_extra_warnings0() {
+    reset_env();
+
+    let test = Test::gnu();
+    test.gcc()
+        .warnings(true)
+        .extra_warnings(false)
+        .flag("-Wno-missing-field-initializers")
+        .file("foo.c")
+        .compile("foo");
+
+    test.cmd(0).must_have("-Wall").must_not_have("-Wextra");
+}
+
+#[test]
+fn gnu_extra_warnings1() {
+    reset_env();
+
+    let test = Test::gnu();
+    test.gcc()
+        .warnings(false)
+        .extra_warnings(true)
+        .flag("-Wno-missing-field-initializers")
+        .file("foo.c")
+        .compile("foo");
+
+    test.cmd(0).must_not_have("-Wall").must_have("-Wextra");
+}
+
+#[test]
+fn gnu_warnings_overridable() {
+    reset_env();
+
+    let test = Test::gnu();
+    test.gcc()
+        .warnings(true)
+        .flag("-Wno-missing-field-initializers")
+        .file("foo.c")
+        .compile("foo");
+
+    test.cmd(0)
+        .must_have_in_order("-Wall", "-Wno-missing-field-initializers");
+}
+
+#[test]
+fn gnu_x86_64() {
+    for vendor in &["unknown-linux-gnu", "apple-darwin"] {
+        let target = format!("x86_64-{}", vendor);
+        let test = Test::gnu();
+        test.gcc()
+            .target(&target)
+            .host(&target)
+            .file("foo.c")
+            .compile("foo");
+
+        test.cmd(0).must_have("-fPIC").must_have("-m64");
+    }
+}
+
+#[test]
+fn gnu_x86_64_no_pic() {
+    reset_env();
+
+    for vendor in &["unknown-linux-gnu", "apple-darwin"] {
+        let target = format!("x86_64-{}", vendor);
+        let test = Test::gnu();
+        test.gcc()
+            .pic(false)
+            .target(&target)
+            .host(&target)
+            .file("foo.c")
+            .compile("foo");
+
+        test.cmd(0).must_not_have("-fPIC");
+    }
+}
+
+#[test]
+fn gnu_i686() {
+    for vendor in &["unknown-linux-gnu", "apple-darwin"] {
+        let target = format!("i686-{}", vendor);
+        let test = Test::gnu();
+        test.gcc()
+            .target(&target)
+            .host(&target)
+            .file("foo.c")
+            .compile("foo");
+
+        test.cmd(0).must_have("-m32");
+    }
+}
+
+#[test]
+fn gnu_i686_pic() {
+    for vendor in &["unknown-linux-gnu", "apple-darwin"] {
+        let target = format!("i686-{}", vendor);
+        let test = Test::gnu();
+        test.gcc()
+            .pic(true)
+            .target(&target)
+            .host(&target)
+            .file("foo.c")
+            .compile("foo");
+
+        test.cmd(0).must_have("-fPIC");
+    }
+}
+
+#[test]
+fn gnu_x86_64_no_plt() {
+    let target = "x86_64-unknown-linux-gnu";
+    let test = Test::gnu();
+    test.gcc()
+        .pic(true)
+        .use_plt(false)
+        .target(&target)
+        .host(&target)
+        .file("foo.c")
+        .compile("foo");
+    test.cmd(0).must_have("-fno-plt");
+}
+
+#[test]
+fn gnu_set_stdlib() {
+    reset_env();
+
+    let test = Test::gnu();
+    test.gcc()
+        .cpp_set_stdlib(Some("foo"))
+        .file("foo.c")
+        .compile("foo");
+
+    test.cmd(0).must_not_have("-stdlib=foo");
+}
+
+#[test]
+fn gnu_include() {
+    let test = Test::gnu();
+    test.gcc().include("foo/bar").file("foo.c").compile("foo");
+
+    test.cmd(0).must_have("-I").must_have("foo/bar");
+}
+
+#[test]
+fn gnu_define() {
+    let test = Test::gnu();
+    test.gcc()
+        .define("FOO", "bar")
+        .define("BAR", None)
+        .file("foo.c")
+        .compile("foo");
+
+    test.cmd(0).must_have("-DFOO=bar").must_have("-DBAR");
+}
+
+#[test]
+fn gnu_compile_assembly() {
+    let test = Test::gnu();
+    test.gcc().file("foo.S").compile("foo");
+    test.cmd(0).must_have("foo.S");
+}
+
+#[test]
+fn gnu_shared() {
+    reset_env();
+
+    let test = Test::gnu();
+    test.gcc()
+        .file("foo.c")
+        .shared_flag(true)
+        .static_flag(false)
+        .compile("foo");
+
+    test.cmd(0).must_have("-shared").must_not_have("-static");
+}
+
+#[test]
+fn gnu_flag_if_supported() {
+    reset_env();
+
+    if cfg!(windows) {
+        return;
+    }
+    let test = Test::gnu();
+    test.gcc()
+        .file("foo.c")
+        .flag("-v")
+        .flag_if_supported("-Wall")
+        .flag_if_supported("-Wflag-does-not-exist")
+        .flag_if_supported("-std=c++11")
+        .compile("foo");
+
+    test.cmd(0)
+        .must_have("-v")
+        .must_have("-Wall")
+        .must_not_have("-Wflag-does-not-exist")
+        .must_not_have("-std=c++11");
+}
+
+#[test]
+fn gnu_flag_if_supported_cpp() {
+    if cfg!(windows) {
+        return;
+    }
+    let test = Test::gnu();
+    test.gcc()
+        .cpp(true)
+        .file("foo.cpp")
+        .flag_if_supported("-std=c++11")
+        .compile("foo");
+
+    test.cmd(0).must_have("-std=c++11");
+}
+
+#[test]
+fn gnu_static() {
+    reset_env();
+
+    let test = Test::gnu();
+    test.gcc()
+        .file("foo.c")
+        .shared_flag(false)
+        .static_flag(true)
+        .compile("foo");
+
+    test.cmd(0).must_have("-static").must_not_have("-shared");
+}
+
+#[test]
+fn gnu_no_dash_dash() {
+    let test = Test::gnu();
+    test.gcc().file("foo.c").compile("foo");
+
+    test.cmd(0).must_not_have("--");
+}
+
+#[test]
+fn gnu_std_c() {
+    let test = Test::gnu();
+    test.gcc().file("foo.c").std("c11").compile("foo");
+
+    test.cmd(0).must_have("-std=c11");
+}
+
+#[test]
+fn msvc_smoke() {
+    reset_env();
+
+    let test = Test::msvc();
+    test.gcc().file("foo.c").compile("foo");
+
+    test.cmd(0)
+        .must_have("-O2")
+        .must_have("foo.c")
+        .must_not_have("-Z7")
+        .must_have("-c")
+        .must_have("-MD");
+    test.cmd(1).must_have(test.td.path().join("foo.o"));
+}
+
+#[test]
+fn msvc_opt_level_0() {
+    reset_env();
+
+    let test = Test::msvc();
+    test.gcc().opt_level(0).file("foo.c").compile("foo");
+
+    test.cmd(0).must_not_have("-O2");
+}
+
+#[test]
+fn msvc_debug() {
+    let test = Test::msvc();
+    test.gcc().debug(true).file("foo.c").compile("foo");
+    test.cmd(0).must_have("-Z7");
+}
+
+#[test]
+fn msvc_include() {
+    let test = Test::msvc();
+    test.gcc().include("foo/bar").file("foo.c").compile("foo");
+
+    test.cmd(0).must_have("-I").must_have("foo/bar");
+}
+
+#[test]
+fn msvc_define() {
+    let test = Test::msvc();
+    test.gcc()
+        .define("FOO", "bar")
+        .define("BAR", None)
+        .file("foo.c")
+        .compile("foo");
+
+    test.cmd(0).must_have("-DFOO=bar").must_have("-DBAR");
+}
+
+#[test]
+fn msvc_static_crt() {
+    let test = Test::msvc();
+    test.gcc().static_crt(true).file("foo.c").compile("foo");
+
+    test.cmd(0).must_have("-MT");
+}
+
+#[test]
+fn msvc_no_static_crt() {
+    let test = Test::msvc();
+    test.gcc().static_crt(false).file("foo.c").compile("foo");
+
+    test.cmd(0).must_have("-MD");
+}
+
+#[test]
+fn msvc_no_dash_dash() {
+    let test = Test::msvc();
+    test.gcc().file("foo.c").compile("foo");
+
+    test.cmd(0).must_not_have("--");
+}
+
+#[test]
+fn msvc_std_c() {
+    let test = Test::msvc();
+    test.gcc().file("foo.c").std("c11").compile("foo");
+
+    test.cmd(0).must_have("-std:c11");
+}
+
+// Disable this test with the parallel feature because the execution
+// order is not deterministic.
+#[cfg(not(feature = "parallel"))]
+#[test]
+fn asm_flags() {
+    let test = Test::gnu();
+    test.gcc()
+        .file("foo.c")
+        .file("x86_64.asm")
+        .file("x86_64.S")
+        .asm_flag("--abc")
+        .compile("foo");
+    test.cmd(0).must_not_have("--abc");
+    test.cmd(1).must_have("--abc");
+    test.cmd(2).must_have("--abc");
+}