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diff --git a/gcc/.gitignore b/gcc/.gitignore new file mode 100644 index 0000000..3b874ca --- /dev/null +++ b/gcc/.gitignore @@ -0,0 +1,4 @@ +target +Cargo.lock +.idea +*.iml diff --git a/gcc/.travis.yml b/gcc/.travis.yml new file mode 100644 index 0000000..10d3d13 --- /dev/null +++ b/gcc/.travis.yml @@ -0,0 +1,49 @@ +language: rust +rust: + - stable + - beta + - nightly +matrix: + include: + # Minimum version supported + - rust: 1.6.0 + install: + script: cargo build + +sudo: false +install: + - if [ "$TRAVIS_OS_NAME" = "linux" ]; then OS=unknown-linux-gnu; else OS=apple-darwin; fi + - export TARGET=$ARCH-$OS + - curl https://static.rust-lang.org/rustup.sh | + sh -s -- --add-target=$TARGET --disable-sudo -y --prefix=`rustc --print sysroot` +before_script: + - pip install 'travis-cargo<0.2' --user && export PATH=$HOME/.local/bin:$PATH +script: + - cargo build --verbose + - cargo test --verbose + - cargo test --verbose --features parallel + - cargo test --manifest-path gcc-test/Cargo.toml --target $TARGET + - cargo test --manifest-path gcc-test/Cargo.toml --target $TARGET --features parallel + - cargo test --manifest-path gcc-test/Cargo.toml --target $TARGET --release + - cargo doc + - cargo clean && cargo build + - rustdoc --test README.md -L target/debug -L target/debug/deps +after_success: + - travis-cargo --only nightly doc-upload +env: + global: + secure: "CBtqrudgE0PS8x3kTr44jKbC2D4nfnmdYVecooNm0qnER4B4TSvZpZSQoCgKK6k4BYQuOSyFTOwYx6M79w39ZMOgyCP9ytB+tyMWL0/+ZuUQL04yVg4M5vd3oJMkOaXbvG56ncgPyFrseY+FPDg+mXAzvJk/nily37YXjkQj2D0=" + + matrix: + - ARCH=x86_64 + - ARCH=i686 +notifications: + email: + on_success: never +os: + - linux + - osx +addons: + apt: + packages: + - g++-multilib diff --git a/gcc/Cargo.toml b/gcc/Cargo.toml new file mode 100644 index 0000000..b9ebcd6 --- /dev/null +++ b/gcc/Cargo.toml @@ -0,0 +1,27 @@ +[package] + +name = "gcc" +version = "0.3.45" +authors = ["Alex Crichton <alex@alexcrichton.com>"] +license = "MIT/Apache-2.0" +repository = "https://github.com/alexcrichton/gcc-rs" +documentation = "https://docs.rs/gcc" +description = """ +A build-time dependency for Cargo build scripts to assist in invoking the native +C compiler to compile native C code into a static archive to be linked into Rust +code. +""" +keywords = ["build-dependencies"] + +[badges] +travis-ci = { repository = "alexcrichton/gcc-rs" } +appveyor = { repository = "alexcrichton/gcc-rs" } + +[dependencies] +rayon = { version = "0.6", optional = true } + +[features] +parallel = ["rayon"] + +[dev-dependencies] +tempdir = "0.3" diff --git a/gcc/LICENSE-APACHE b/gcc/LICENSE-APACHE new file mode 100644 index 0000000..16fe87b --- /dev/null +++ b/gcc/LICENSE-APACHE @@ -0,0 +1,201 @@ + Apache License + Version 2.0, January 2004 + http://www.apache.org/licenses/ + +TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION + +1. 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In no event and under no legal theory, + whether in tort (including negligence), contract, or otherwise, + unless required by applicable law (such as deliberate and grossly + negligent acts) or agreed to in writing, shall any Contributor be + liable to You for damages, including any direct, indirect, special, + incidental, or consequential damages of any character arising as a + result of this License or out of the use or inability to use the + Work (including but not limited to damages for loss of goodwill, + work stoppage, computer failure or malfunction, or any and all + other commercial damages or losses), even if such Contributor + has been advised of the possibility of such damages. + +9. Accepting Warranty or Additional Liability. While redistributing + the Work or Derivative Works thereof, You may choose to offer, + and charge a fee for, acceptance of support, warranty, indemnity, + or other liability obligations and/or rights consistent with this + License. However, in accepting such obligations, You may act only + on Your own behalf and on Your sole responsibility, not on behalf + of any other Contributor, and only if You agree to indemnify, + defend, and hold each Contributor harmless for any liability + incurred by, or claims asserted against, such Contributor by reason + of your accepting any such warranty or additional liability. + +END OF TERMS AND CONDITIONS + +APPENDIX: How to apply the Apache License to your work. + + To apply the Apache License to your work, attach the following + boilerplate notice, with the fields enclosed by brackets "[]" + replaced with your own identifying information. (Don't include + the brackets!) The text should be enclosed in the appropriate + comment syntax for the file format. We also recommend that a + file or class name and description of purpose be included on the + same "printed page" as the copyright notice for easier + identification within third-party archives. + +Copyright [yyyy] [name of copyright owner] + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. diff --git a/gcc/LICENSE-MIT b/gcc/LICENSE-MIT new file mode 100644 index 0000000..39e0ed6 --- /dev/null +++ b/gcc/LICENSE-MIT @@ -0,0 +1,25 @@ +Copyright (c) 2014 Alex Crichton + +Permission is hereby granted, free of charge, to any +person obtaining a copy of this software and associated +documentation files (the "Software"), to deal in the +Software without restriction, including without +limitation the rights to use, copy, modify, merge, +publish, distribute, sublicense, and/or sell copies of +the Software, and to permit persons to whom the Software +is furnished to do so, subject to the following +conditions: + +The above copyright notice and this permission notice +shall be included in all copies or substantial portions +of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF +ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED +TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A +PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT +SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY +CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION +OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR +IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER +DEALINGS IN THE SOFTWARE. diff --git a/gcc/README.md b/gcc/README.md new file mode 100644 index 0000000..2d3e5ed --- /dev/null +++ b/gcc/README.md @@ -0,0 +1,163 @@ +# gcc-rs + +A library to compile C/C++ code into a Rust library/application. + +[](https://travis-ci.org/alexcrichton/gcc-rs) +[](https://ci.appveyor.com/project/alexcrichton/gcc-rs) + +[Documentation](https://docs.rs/gcc) + +A simple library meant to be used as a build dependency with Cargo packages in +order to build a set of C/C++ files into a static archive. Note that while this +crate is called "gcc", it actually calls out to the most relevant compile for +a platform, for example using `cl` on MSVC. That is, this crate does indeed work +on MSVC! + +## Using gcc-rs + +First, you'll want to both add a build script for your crate (`build.rs`) and +also add this crate to your `Cargo.toml` via: + +```toml +[package] +# ... +build = "build.rs" + +[build-dependencies] +gcc = "0.3" +``` + +Next up, you'll want to write a build script like so: + +```rust,no_run +// build.rs + +extern crate gcc; + +fn main() { + gcc::compile_library("libfoo.a", &["foo.c", "bar.c"]); +} +``` + +And that's it! Running `cargo build` should take care of the rest and your Rust +application will now have the C files `foo.c` and `bar.c` compiled into it. You +can call the functions in Rust by declaring functions in your Rust code like so: + +``` +extern { + fn foo_function(); + fn bar_function(); +} + +pub fn call() { + unsafe { + foo_function(); + bar_function(); + } +} + +fn main() { + // ... +} +``` + +## External configuration via environment variables + +To control the programs and flags used for building, the builder can set a +number of different environment variables. + +* `CFLAGS` - a series of space separated flags passed to "gcc". Note that + individual flags cannot currently contain spaces, so doing + something like: "-L=foo\ bar" is not possible. +* `CC` - the actual C compiler used. Note that this is used as an exact + executable name, so (for example) no extra flags can be passed inside + this variable, and the builder must ensure that there aren't any + trailing spaces. This compiler must understand the `-c` flag. For + certain `TARGET`s, it also is assumed to know about other flags (most + common is `-fPIC`). +* `AR` - the `ar` (archiver) executable to use to build the static library. + +Each of these variables can also be supplied with certain prefixes and suffixes, +in the following prioritized order: + +1. `<var>_<target>` - for example, `CC_x86_64-unknown-linux-gnu` +2. `<var>_<target_with_underscores>` - for example, `CC_x86_64_unknown_linux_gnu` +3. `<build-kind>_<var>` - for example, `HOST_CC` or `TARGET_CFLAGS` +4. `<var>` - a plain `CC`, `AR` as above. + +If none of these variables exist, gcc-rs uses built-in defaults + +In addition to the the above optional environment variables, `gcc-rs` has some +functions with hard requirements on some variables supplied by [cargo's +build-script driver][cargo] that it has the `TARGET`, `OUT_DIR`, `OPT_LEVEL`, +and `HOST` variables. + +[cargo]: http://doc.crates.io/build-script.html#inputs-to-the-build-script + +## Optional features + +Currently gcc-rs supports parallel compilation (think `make -jN`) but this +feature is turned off by default. To enable gcc-rs to compile C/C++ in parallel, +you can change your dependency to: + +```toml +[build-dependencies] +gcc = { version = "0.3", features = ["parallel"] } +``` + +By default gcc-rs will limit parallelism to `$NUM_JOBS`, or if not present it +will limit it to the number of cpus on the machine. If you are using cargo, +use `-jN` option of `build`, `test` and `run` commands as `$NUM_JOBS` +is supplied by cargo. + +## Compile-time Requirements + +To work properly this crate needs access to a C compiler when the build script +is being run. This crate does not ship a C compiler with it. The compiler +required varies per platform, but there are three broad categories: + +* Unix platforms require `cc` to be the C compiler. This can be found by + installing gcc/clang on Linux distributions and Xcode on OSX, for example. +* Windows platforms targeting MSVC (e.g. your target triple ends in `-msvc`) + require `cl.exe` to be available and in `PATH`. This is typically found in + standard Visual Studio installations and the `PATH` can be set up by running + the appropriate developer tools shell. +* Windows platforms targeting MinGW (e.g. your target triple ends in `-gnu`) + require `gcc` to be available in `PATH`. We recommend the + [MinGW-w64](http://mingw-w64.org) distribution, which is using the + [Win-builds](http://win-builds.org) installation system. + You may also acquire it via + [MSYS2](http://msys2.github.io), as explained [here][msys2-help]. Make sure + to install the appropriate architecture corresponding to your installation of + rustc. GCC from older [MinGW](http://www.mingw.org) project is compatible + only with 32-bit rust compiler. + +[msys2-help]: http://github.com/rust-lang/rust#building-on-windows + +## C++ support + +`gcc-rs` supports C++ libraries compilation by using the `cpp` method on +`Config`: + +```rust,no_run +extern crate gcc; + +fn main() { + gcc::Config::new() + .cpp(true) // Switch to C++ library compilation. + .file("foo.cpp") + .compile("libfoo.a"); +} +``` + +When using C++ library compilation switch, the `CXX` and `CXXFLAGS` env +variables are used instead of `CC` and `CFLAGS` and the C++ standard library is +linked to the crate target. + +## License + +`gcc-rs` is primarily distributed under the terms of both the MIT license and +the Apache License (Version 2.0), with portions covered by various BSD-like +licenses. + +See LICENSE-APACHE, and LICENSE-MIT for details. diff --git a/gcc/appveyor.yml b/gcc/appveyor.yml new file mode 100644 index 0000000..f6108c6 --- /dev/null +++ b/gcc/appveyor.yml @@ -0,0 +1,35 @@ +environment: + matrix: + - TARGET: x86_64-pc-windows-msvc + ARCH: amd64 + VS: C:\Program Files (x86)\Microsoft Visual Studio 12.0\VC\vcvarsall.bat + - TARGET: x86_64-pc-windows-msvc + ARCH: amd64 + VS: C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\vcvarsall.bat + - TARGET: i686-pc-windows-msvc + ARCH: x86 + VS: C:\Program Files (x86)\Microsoft Visual Studio 12.0\VC\vcvarsall.bat + - TARGET: i686-pc-windows-msvc + ARCH: x86 + VS: C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\vcvarsall.bat + - TARGET: x86_64-pc-windows-gnu + MSYS_BITS: 64 + - TARGET: i686-pc-windows-gnu + MSYS_BITS: 32 +install: + - ps: Start-FileDownload "https://static.rust-lang.org/dist/rust-nightly-${env:TARGET}.exe" + - rust-nightly-%TARGET%.exe /VERYSILENT /NORESTART /DIR="C:\Program Files (x86)\Rust" + - if defined VS call "%VS%" %ARCH% + - set PATH=%PATH%;C:\Program Files (x86)\Rust\bin + - if defined MSYS_BITS set PATH=%PATH%;C:\msys64\mingw%MSYS_BITS%\bin + - rustc -V + - cargo -V + +build: false + +test_script: + - cargo test --target %TARGET% + - cargo test --features parallel --target %TARGET% + - cargo test --manifest-path gcc-test/Cargo.toml --target %TARGET% + - cargo test --manifest-path gcc-test/Cargo.toml --features parallel --target %TARGET% + - cargo test --manifest-path gcc-test/Cargo.toml --release --target %TARGET% diff --git a/gcc/gcc-test/Cargo.toml b/gcc/gcc-test/Cargo.toml new file mode 100644 index 0000000..ba40ec0 --- /dev/null +++ b/gcc/gcc-test/Cargo.toml @@ -0,0 +1,16 @@ +[package] +name = "gcc-test" +version = "0.1.0" +authors = ["Alex Crichton <alex@alexcrichton.com>"] +build = "build.rs" + +[lib] +name = "gcc_test" +doctest = false +test = false + +[build-dependencies] +gcc = { path = ".." } + +[features] +parallel = ["gcc/parallel"] diff --git a/gcc/gcc-test/build.rs b/gcc/gcc-test/build.rs new file mode 100644 index 0000000..f81833b --- /dev/null +++ b/gcc/gcc-test/build.rs @@ -0,0 +1,90 @@ +extern crate gcc; + +use std::env; +use std::fs; +use std::path::PathBuf; + +fn main() { + let out = PathBuf::from(env::var_os("OUT_DIR").unwrap()); + fs::remove_dir_all(&out).unwrap(); + fs::create_dir(&out).unwrap(); + + gcc::Config::new() + .file("src/foo.c") + .define("FOO", None) + .define("BAR", Some("1")) + .compile("libfoo.a"); + + gcc::Config::new() + .file("src/bar1.c") + .file("src/bar2.c") + .include("src/include") + .compile("libbar.a"); + + let target = std::env::var("TARGET").unwrap(); + let file = target.split("-").next().unwrap(); + let file = format!("src/{}.{}", + file, + if target.contains("msvc") { "asm" } else { "S" }); + gcc::Config::new() + .file(file) + .compile("libasm.a"); + + gcc::Config::new() + .file("src/baz.cpp") + .cpp(true) + .compile("libbaz.a"); + + if target.contains("windows") { + gcc::Config::new() + .file("src/windows.c") + .compile("libwindows.a"); + } + + // Test that the `windows_registry` module will set PATH by looking for + // nmake which runs vanilla cl, and then also test it after we remove all + // the relevant env vars from our own process. + if target.contains("msvc") { + let out = out.join("tmp"); + fs::create_dir(&out).unwrap(); + println!("nmake 1"); + let status = gcc::windows_registry::find(&target, "nmake.exe") + .unwrap() + .arg("/fsrc/NMakefile") + .env("OUT_DIR", &out) + .status() + .unwrap(); + assert!(status.success()); + + fs::remove_dir_all(&out).unwrap(); + fs::create_dir(&out).unwrap(); + + env::remove_var("PATH"); + env::remove_var("VCINSTALLDIR"); + env::remove_var("INCLUDE"); + env::remove_var("LIB"); + println!("nmake 2"); + let status = gcc::windows_registry::find(&target, "nmake.exe") + .unwrap() + .arg("/fsrc/NMakefile") + .env("OUT_DIR", &out) + .status() + .unwrap(); + assert!(status.success()); + println!("cargo:rustc-link-lib=msvc"); + println!("cargo:rustc-link-search={}", out.display()); + } + + // This tests whether we can build a library but not link it to the main + // crate. The test module will do its own linking. + gcc::Config::new() + .cargo_metadata(false) + .file("src/opt_linkage.c") + .compile("libOptLinkage.a"); + + let out = gcc::Config::new() + .file("src/expand.c") + .expand(); + let out = String::from_utf8(out).unwrap(); + assert!(out.contains("hello world")); +} diff --git a/gcc/gcc-test/src/NMakefile b/gcc/gcc-test/src/NMakefile new file mode 100644 index 0000000..03c73df --- /dev/null +++ b/gcc/gcc-test/src/NMakefile @@ -0,0 +1,14 @@ +all: $(OUT_DIR)/msvc.lib $(OUT_DIR)/msvc.exe + +$(OUT_DIR)/msvc.lib: $(OUT_DIR)/msvc.o + lib -nologo -out:$(OUT_DIR)/msvc.lib $(OUT_DIR)/msvc.o + rc -h + +$(OUT_DIR)/msvc.o: src/msvc.c + $(CC) -nologo -c -Fo:$@ src/msvc.c -MD + +$(OUT_DIR)/msvc.exe: $(OUT_DIR)/msvc2.o + $(CC) -nologo -Fo:$@ $(OUT_DIR)/msvc2.o + +$(OUT_DIR)/msvc2.o: src/msvc.c + $(CC) -nologo -c -Fo:$@ src/msvc.c -DMAIN -MD diff --git a/gcc/gcc-test/src/bar1.c b/gcc/gcc-test/src/bar1.c new file mode 100644 index 0000000..605be33 --- /dev/null +++ b/gcc/gcc-test/src/bar1.c @@ -0,0 +1,7 @@ +#include <stdint.h> +#include "foo.h" + +int32_t bar1() { + return 5; +} + diff --git a/gcc/gcc-test/src/bar2.c b/gcc/gcc-test/src/bar2.c new file mode 100644 index 0000000..9be4291 --- /dev/null +++ b/gcc/gcc-test/src/bar2.c @@ -0,0 +1,6 @@ +#include <stdint.h> + +int32_t bar2() { + return 6; +} + diff --git a/gcc/gcc-test/src/baz.cpp b/gcc/gcc-test/src/baz.cpp new file mode 100644 index 0000000..2d4b959 --- /dev/null +++ b/gcc/gcc-test/src/baz.cpp @@ -0,0 +1,9 @@ +#include <stdint.h> + +extern "C" int32_t +baz() { + int *a = new int(8); + int b = *a; + delete a; + return b; +} diff --git a/gcc/gcc-test/src/expand.c b/gcc/gcc-test/src/expand.c new file mode 100644 index 0000000..2b492a2 --- /dev/null +++ b/gcc/gcc-test/src/expand.c @@ -0,0 +1,4 @@ +#define HELLO hello +#define WORLD world + +HELLO WORLD diff --git a/gcc/gcc-test/src/foo.c b/gcc/gcc-test/src/foo.c new file mode 100644 index 0000000..541e62c --- /dev/null +++ b/gcc/gcc-test/src/foo.c @@ -0,0 +1,9 @@ +#include <stdint.h> + +#ifdef FOO +#if BAR == 1 +int32_t foo() { + return 4; +} +#endif +#endif diff --git a/gcc/gcc-test/src/i686.S b/gcc/gcc-test/src/i686.S new file mode 100644 index 0000000..3ed9e86 --- /dev/null +++ b/gcc/gcc-test/src/i686.S @@ -0,0 +1,9 @@ +.globl asm +asm: + mov $7, %eax + ret + +.globl _asm +_asm: + mov $7, %eax + ret diff --git a/gcc/gcc-test/src/i686.asm b/gcc/gcc-test/src/i686.asm new file mode 100644 index 0000000..6bf9676 --- /dev/null +++ b/gcc/gcc-test/src/i686.asm @@ -0,0 +1,9 @@ +.586 +.MODEL FLAT, C +.CODE + +asm PROC + MOV EAX, 7 + RET +asm ENDP +END diff --git a/gcc/gcc-test/src/include/foo.h b/gcc/gcc-test/src/include/foo.h new file mode 100644 index 0000000..e69de29 --- /dev/null +++ b/gcc/gcc-test/src/include/foo.h diff --git a/gcc/gcc-test/src/lib.rs b/gcc/gcc-test/src/lib.rs new file mode 100644 index 0000000..b42ebf7 --- /dev/null +++ b/gcc/gcc-test/src/lib.rs @@ -0,0 +1,16 @@ +extern "C" { + pub fn foo() -> i32; + + pub fn bar1() -> i32; + pub fn bar2() -> i32; + + pub fn asm() -> i32; + + pub fn baz() -> i32; + + #[cfg(windows)] + pub fn windows(); + + #[cfg(target_env = "msvc")] + pub fn msvc(); +} diff --git a/gcc/gcc-test/src/msvc.c b/gcc/gcc-test/src/msvc.c new file mode 100644 index 0000000..dbbc494 --- /dev/null +++ b/gcc/gcc-test/src/msvc.c @@ -0,0 +1,7 @@ +#include <windows.h> + +void msvc() {} + +#ifdef MAIN +int main() {} +#endif diff --git a/gcc/gcc-test/src/opt_linkage.c b/gcc/gcc-test/src/opt_linkage.c new file mode 100644 index 0000000..a74af8c --- /dev/null +++ b/gcc/gcc-test/src/opt_linkage.c @@ -0,0 +1,5 @@ +#include <stdint.h> + +int32_t answer() { + return 42; +} diff --git a/gcc/gcc-test/src/windows.c b/gcc/gcc-test/src/windows.c new file mode 100644 index 0000000..0896aa0 --- /dev/null +++ b/gcc/gcc-test/src/windows.c @@ -0,0 +1,3 @@ +#include <windows.h> + +void windows() {} diff --git a/gcc/gcc-test/src/x86_64.S b/gcc/gcc-test/src/x86_64.S new file mode 100644 index 0000000..3ed9e86 --- /dev/null +++ b/gcc/gcc-test/src/x86_64.S @@ -0,0 +1,9 @@ +.globl asm +asm: + mov $7, %eax + ret + +.globl _asm +_asm: + mov $7, %eax + ret diff --git a/gcc/gcc-test/src/x86_64.asm b/gcc/gcc-test/src/x86_64.asm new file mode 100644 index 0000000..1c03101 --- /dev/null +++ b/gcc/gcc-test/src/x86_64.asm @@ -0,0 +1,8 @@ +_TEXT SEGMENT + +asm PROC + MOV EAX, 7 + RET +asm ENDP + +END diff --git a/gcc/gcc-test/tests/all.rs b/gcc/gcc-test/tests/all.rs new file mode 100644 index 0000000..7b70f4e --- /dev/null +++ b/gcc/gcc-test/tests/all.rs @@ -0,0 +1,60 @@ +extern crate gcc_test; + +use gcc_test::*; + +#[link(name = "OptLinkage", kind = "static")] +extern "C" { + fn answer() -> i32; +} + +#[test] +fn foo_here() { + unsafe { + assert_eq!(foo(), 4); + } +} + +#[test] +fn bar_here() { + unsafe { + assert_eq!(bar1(), 5); + assert_eq!(bar2(), 6); + } +} + +#[test] +fn asm_here() { + unsafe { + assert_eq!(asm(), 7); + } +} + +#[test] +fn baz_here() { + unsafe { + assert_eq!(baz(), 8); + } +} + +#[test] +#[cfg(windows)] +fn windows_here() { + unsafe { + windows(); + } +} + +#[test] +#[cfg(target_env = "msvc")] +fn msvc_here() { + unsafe { + msvc(); + } +} + +#[test] +fn opt_linkage() { + unsafe { + assert_eq!(answer(), 42); + } +} diff --git a/gcc/src/bin/gcc-shim.rs b/gcc/src/bin/gcc-shim.rs new file mode 100644 index 0000000..7fd0ea8 --- /dev/null +++ b/gcc/src/bin/gcc-shim.rs @@ -0,0 +1,23 @@ +#![cfg_attr(test, allow(dead_code))] + +use std::env; +use std::fs::File; +use std::io::prelude::*; +use std::path::PathBuf; + +fn main() { + let out_dir = PathBuf::from(env::var_os("GCCTEST_OUT_DIR").unwrap()); + for i in 0.. { + let candidate = out_dir.join(format!("out{}", i)); + if candidate.exists() { + continue; + } + let mut f = File::create(candidate).unwrap(); + for arg in env::args().skip(1) { + writeln!(f, "{}", arg).unwrap(); + } + + File::create(out_dir.join("libfoo.a")).unwrap(); + break; + } +} diff --git a/gcc/src/lib.rs b/gcc/src/lib.rs new file mode 100644 index 0000000..85d7d22 --- /dev/null +++ b/gcc/src/lib.rs @@ -0,0 +1,1153 @@ +//! A library for build scripts to compile custom C code +//! +//! This library is intended to be used as a `build-dependencies` entry in +//! `Cargo.toml`: +//! +//! ```toml +//! [build-dependencies] +//! gcc = "0.3" +//! ``` +//! +//! The purpose of this crate is to provide the utility functions necessary to +//! compile C code into a static archive which is then linked into a Rust crate. +//! The top-level `compile_library` function serves as a convenience and more +//! advanced configuration is available through the `Config` builder. +//! +//! This crate will automatically detect situations such as cross compilation or +//! other environment variables set by Cargo and will build code appropriately. +//! +//! # Examples +//! +//! Use the default configuration: +//! +//! ```no_run +//! extern crate gcc; +//! +//! fn main() { +//! gcc::compile_library("libfoo.a", &["src/foo.c"]); +//! } +//! ``` +//! +//! Use more advanced configuration: +//! +//! ```no_run +//! extern crate gcc; +//! +//! fn main() { +//! gcc::Config::new() +//! .file("src/foo.c") +//! .define("FOO", Some("bar")) +//! .include("src") +//! .compile("libfoo.a"); +//! } +//! ``` + +#![doc(html_root_url = "https://docs.rs/gcc/0.3")] +#![cfg_attr(test, deny(warnings))] +#![deny(missing_docs)] + +#[cfg(feature = "parallel")] +extern crate rayon; + +use std::env; +use std::ffi::{OsString, OsStr}; +use std::fs; +use std::path::{PathBuf, Path}; +use std::process::{Command, Stdio, Child}; +use std::io::{self, BufReader, BufRead, Read, Write}; +use std::thread::{self, JoinHandle}; + +#[cfg(windows)] +mod registry; +pub mod windows_registry; + +/// Extra configuration to pass to gcc. +pub struct Config { + include_directories: Vec<PathBuf>, + definitions: Vec<(String, Option<String>)>, + objects: Vec<PathBuf>, + flags: Vec<String>, + files: Vec<PathBuf>, + cpp: bool, + cpp_link_stdlib: Option<Option<String>>, + cpp_set_stdlib: Option<String>, + target: Option<String>, + host: Option<String>, + out_dir: Option<PathBuf>, + opt_level: Option<String>, + debug: Option<bool>, + env: Vec<(OsString, OsString)>, + compiler: Option<PathBuf>, + archiver: Option<PathBuf>, + cargo_metadata: bool, + pic: Option<bool>, +} + +/// Configuration used to represent an invocation of a C compiler. +/// +/// This can be used to figure out what compiler is in use, what the arguments +/// to it are, and what the environment variables look like for the compiler. +/// This can be used to further configure other build systems (e.g. forward +/// along CC and/or CFLAGS) or the `to_command` method can be used to run the +/// compiler itself. +pub struct Tool { + path: PathBuf, + args: Vec<OsString>, + env: Vec<(OsString, OsString)>, + family: ToolFamily +} + +/// Represents the family of tools this tool belongs to. +/// +/// Each family of tools differs in how and what arguments they accept. +/// +/// Detection of a family is done on best-effort basis and may not accurately reflect the tool. +#[derive(Copy, Clone, Debug)] +enum ToolFamily { + /// Tool is GNU Compiler Collection-like. + Gnu, + /// Tool is Clang-like. It differs from the GCC in a sense that it accepts superset of flags + /// and its cross-compilation approach is different. + Clang, + /// Tool is the MSVC cl.exe. + Msvc, +} + +impl ToolFamily { + /// What the flag to request debug info for this family of tools look like + fn debug_flag(&self) -> &'static str { + match *self { + ToolFamily::Msvc => "/Z7", + ToolFamily::Gnu | + ToolFamily::Clang => "-g", + } + } + + /// What the flag to include directories into header search path looks like + fn include_flag(&self) -> &'static str { + match *self { + ToolFamily::Msvc => "/I", + ToolFamily::Gnu | + ToolFamily::Clang => "-I", + } + } + + /// What the flag to request macro-expanded source output looks like + fn expand_flag(&self) -> &'static str { + match *self { + ToolFamily::Msvc => "/E", + ToolFamily::Gnu | + ToolFamily::Clang => "-E", + } + } +} + +/// Compile a library from the given set of input C files. +/// +/// This will simply compile all files into object files and then assemble them +/// into the output. This will read the standard environment variables to detect +/// cross compilations and such. +/// +/// This function will also print all metadata on standard output for Cargo. +/// +/// # Example +/// +/// ```no_run +/// gcc::compile_library("libfoo.a", &["foo.c", "bar.c"]); +/// ``` +pub fn compile_library(output: &str, files: &[&str]) { + let mut c = Config::new(); + for f in files.iter() { + c.file(*f); + } + c.compile(output); +} + +impl Config { + /// Construct a new instance of a blank set of configuration. + /// + /// This builder is finished with the `compile` function. + pub fn new() -> Config { + Config { + include_directories: Vec::new(), + definitions: Vec::new(), + objects: Vec::new(), + flags: Vec::new(), + files: Vec::new(), + cpp: false, + cpp_link_stdlib: None, + cpp_set_stdlib: None, + target: None, + host: None, + out_dir: None, + opt_level: None, + debug: None, + env: Vec::new(), + compiler: None, + archiver: None, + cargo_metadata: true, + pic: None, + } + } + + /// Add a directory to the `-I` or include path for headers + pub fn include<P: AsRef<Path>>(&mut self, dir: P) -> &mut Config { + self.include_directories.push(dir.as_ref().to_path_buf()); + self + } + + /// Specify a `-D` variable with an optional value. + pub fn define(&mut self, var: &str, val: Option<&str>) -> &mut Config { + self.definitions.push((var.to_string(), val.map(|s| s.to_string()))); + self + } + + /// Add an arbitrary object file to link in + pub fn object<P: AsRef<Path>>(&mut self, obj: P) -> &mut Config { + self.objects.push(obj.as_ref().to_path_buf()); + self + } + + /// Add an arbitrary flag to the invocation of the compiler + pub fn flag(&mut self, flag: &str) -> &mut Config { + self.flags.push(flag.to_string()); + self + } + + /// Add a file which will be compiled + pub fn file<P: AsRef<Path>>(&mut self, p: P) -> &mut Config { + self.files.push(p.as_ref().to_path_buf()); + self + } + + /// Set C++ support. + /// + /// The other `cpp_*` options will only become active if this is set to + /// `true`. + pub fn cpp(&mut self, cpp: bool) -> &mut Config { + self.cpp = cpp; + self + } + + /// Set the standard library to link against when compiling with C++ + /// support. + /// + /// The default value of this property depends on the current target: On + /// OS X `Some("c++")` is used, when compiling for a Visual Studio based + /// target `None` is used and for other targets `Some("stdc++")` is used. + /// + /// A value of `None` indicates that no automatic linking should happen, + /// otherwise cargo will link against the specified library. + /// + /// The given library name must not contain the `lib` prefix. + pub fn cpp_link_stdlib(&mut self, cpp_link_stdlib: Option<&str>) -> &mut Config { + self.cpp_link_stdlib = Some(cpp_link_stdlib.map(|s| s.into())); + self + } + + /// Force the C++ compiler to use the specified standard library. + /// + /// Setting this option will automatically set `cpp_link_stdlib` to the same + /// value. + /// + /// The default value of this option is always `None`. + /// + /// This option has no effect when compiling for a Visual Studio based + /// target. + /// + /// This option sets the `-stdlib` flag, which is only supported by some + /// compilers (clang, icc) but not by others (gcc). The library will not + /// detect which compiler is used, as such it is the responsibility of the + /// caller to ensure that this option is only used in conjuction with a + /// compiler which supports the `-stdlib` flag. + /// + /// A value of `None` indicates that no specific C++ standard library should + /// be used, otherwise `-stdlib` is added to the compile invocation. + /// + /// The given library name must not contain the `lib` prefix. + pub fn cpp_set_stdlib(&mut self, cpp_set_stdlib: Option<&str>) -> &mut Config { + self.cpp_set_stdlib = cpp_set_stdlib.map(|s| s.into()); + self.cpp_link_stdlib(cpp_set_stdlib); + self + } + + /// Configures the target this configuration will be compiling for. + /// + /// This option is automatically scraped from the `TARGET` environment + /// variable by build scripts, so it's not required to call this function. + pub fn target(&mut self, target: &str) -> &mut Config { + self.target = Some(target.to_string()); + self + } + + /// Configures the host assumed by this configuration. + /// + /// This option is automatically scraped from the `HOST` environment + /// variable by build scripts, so it's not required to call this function. + pub fn host(&mut self, host: &str) -> &mut Config { + self.host = Some(host.to_string()); + self + } + + /// Configures the optimization level of the generated object files. + /// + /// This option is automatically scraped from the `OPT_LEVEL` environment + /// variable by build scripts, so it's not required to call this function. + pub fn opt_level(&mut self, opt_level: u32) -> &mut Config { + self.opt_level = Some(opt_level.to_string()); + self + } + + /// Configures the optimization level of the generated object files. + /// + /// This option is automatically scraped from the `OPT_LEVEL` environment + /// variable by build scripts, so it's not required to call this function. + pub fn opt_level_str(&mut self, opt_level: &str) -> &mut Config { + self.opt_level = Some(opt_level.to_string()); + self + } + + /// Configures whether the compiler will emit debug information when + /// generating object files. + /// + /// This option is automatically scraped from the `PROFILE` environment + /// variable by build scripts (only enabled when the profile is "debug"), so + /// it's not required to call this function. + pub fn debug(&mut self, debug: bool) -> &mut Config { + self.debug = Some(debug); + self + } + + /// Configures the output directory where all object files and static + /// libraries will be located. + /// + /// This option is automatically scraped from the `OUT_DIR` environment + /// variable by build scripts, so it's not required to call this function. + pub fn out_dir<P: AsRef<Path>>(&mut self, out_dir: P) -> &mut Config { + self.out_dir = Some(out_dir.as_ref().to_owned()); + self + } + + /// Configures the compiler to be used to produce output. + /// + /// This option is automatically determined from the target platform or a + /// number of environment variables, so it's not required to call this + /// function. + pub fn compiler<P: AsRef<Path>>(&mut self, compiler: P) -> &mut Config { + self.compiler = Some(compiler.as_ref().to_owned()); + self + } + + /// Configures the tool used to assemble archives. + /// + /// This option is automatically determined from the target platform or a + /// number of environment variables, so it's not required to call this + /// function. + pub fn archiver<P: AsRef<Path>>(&mut self, archiver: P) -> &mut Config { + self.archiver = Some(archiver.as_ref().to_owned()); + self + } + /// Define whether metadata should be emitted for cargo allowing it to + /// automatically link the binary. Defaults to `true`. + pub fn cargo_metadata(&mut self, cargo_metadata: bool) -> &mut Config { + self.cargo_metadata = cargo_metadata; + self + } + + /// Configures whether the compiler will emit position independent code. + /// + /// This option defaults to `false` for `windows-gnu` targets and + /// to `true` for all other targets. + pub fn pic(&mut self, pic: bool) -> &mut Config { + self.pic = Some(pic); + self + } + + + #[doc(hidden)] + pub fn __set_env<A, B>(&mut self, a: A, b: B) -> &mut Config + where A: AsRef<OsStr>, + B: AsRef<OsStr> + { + self.env.push((a.as_ref().to_owned(), b.as_ref().to_owned())); + self + } + + /// Run the compiler, generating the file `output` + /// + /// The name `output` must begin with `lib` and end with `.a` + pub fn compile(&self, output: &str) { + assert!(output.starts_with("lib")); + assert!(output.ends_with(".a")); + let lib_name = &output[3..output.len() - 2]; + let dst = self.get_out_dir(); + + let mut objects = Vec::new(); + let mut src_dst = Vec::new(); + for file in self.files.iter() { + let obj = dst.join(file).with_extension("o"); + let obj = if !obj.starts_with(&dst) { + dst.join(obj.file_name().unwrap()) + } else { + obj + }; + fs::create_dir_all(&obj.parent().unwrap()).unwrap(); + src_dst.push((file.to_path_buf(), obj.clone())); + objects.push(obj); + } + self.compile_objects(&src_dst); + self.assemble(lib_name, &dst.join(output), &objects); + + if self.get_target().contains("msvc") { + let compiler = self.get_base_compiler(); + let atlmfc_lib = compiler.env() + .iter() + .find(|&&(ref var, _)| var.as_os_str() == OsStr::new("LIB")) + .and_then(|&(_, ref lib_paths)| { + env::split_paths(lib_paths).find(|path| { + let sub = Path::new("atlmfc/lib"); + path.ends_with(sub) || path.parent().map_or(false, |p| p.ends_with(sub)) + }) + }); + + if let Some(atlmfc_lib) = atlmfc_lib { + self.print(&format!("cargo:rustc-link-search=native={}", atlmfc_lib.display())); + } + } + + self.print(&format!("cargo:rustc-link-lib=static={}", + &output[3..output.len() - 2])); + self.print(&format!("cargo:rustc-link-search=native={}", dst.display())); + + // Add specific C++ libraries, if enabled. + if self.cpp { + if let Some(stdlib) = self.get_cpp_link_stdlib() { + self.print(&format!("cargo:rustc-link-lib={}", stdlib)); + } + } + } + + #[cfg(feature = "parallel")] + fn compile_objects(&self, objs: &[(PathBuf, PathBuf)]) { + use self::rayon::prelude::*; + + let mut cfg = rayon::Configuration::new(); + if let Ok(amt) = env::var("NUM_JOBS") { + if let Ok(amt) = amt.parse() { + cfg = cfg.set_num_threads(amt); + } + } + drop(rayon::initialize(cfg)); + + objs.par_iter().weight_max().for_each(|&(ref src, ref dst)| self.compile_object(src, dst)); + } + + #[cfg(not(feature = "parallel"))] + fn compile_objects(&self, objs: &[(PathBuf, PathBuf)]) { + for &(ref src, ref dst) in objs { + self.compile_object(src, dst); + } + } + + fn compile_object(&self, file: &Path, dst: &Path) { + let is_asm = file.extension().and_then(|s| s.to_str()) == Some("asm"); + let msvc = self.get_target().contains("msvc"); + let (mut cmd, name) = if msvc && is_asm { + self.msvc_macro_assembler() + } else { + let compiler = self.get_compiler(); + let mut cmd = compiler.to_command(); + for &(ref a, ref b) in self.env.iter() { + cmd.env(a, b); + } + (cmd, + compiler.path + .file_name() + .unwrap() + .to_string_lossy() + .into_owned()) + }; + if msvc && is_asm { + cmd.arg("/Fo").arg(dst); + } else if msvc { + let mut s = OsString::from("/Fo"); + s.push(&dst); + cmd.arg(s); + } else { + cmd.arg("-o").arg(&dst); + } + cmd.arg(if msvc { "/c" } else { "-c" }); + cmd.arg(file); + + run(&mut cmd, &name); + } + + /// Run the compiler, returning the macro-expanded version of the input files. + /// + /// This is only relevant for C and C++ files. + pub fn expand(&self) -> Vec<u8> { + let compiler = self.get_compiler(); + let mut cmd = compiler.to_command(); + for &(ref a, ref b) in self.env.iter() { + cmd.env(a, b); + } + cmd.arg(compiler.family.expand_flag()); + for file in self.files.iter() { + cmd.arg(file); + } + + let name = compiler.path + .file_name() + .unwrap() + .to_string_lossy() + .into_owned(); + + run_output(&mut cmd, &name) + } + + /// Get the compiler that's in use for this configuration. + /// + /// This function will return a `Tool` which represents the culmination + /// of this configuration at a snapshot in time. The returned compiler can + /// be inspected (e.g. the path, arguments, environment) to forward along to + /// other tools, or the `to_command` method can be used to invoke the + /// compiler itself. + /// + /// This method will take into account all configuration such as debug + /// information, optimization level, include directories, defines, etc. + /// Additionally, the compiler binary in use follows the standard + /// conventions for this path, e.g. looking at the explicitly set compiler, + /// environment variables (a number of which are inspected here), and then + /// falling back to the default configuration. + pub fn get_compiler(&self) -> Tool { + let opt_level = self.get_opt_level(); + let target = self.get_target(); + + let mut cmd = self.get_base_compiler(); + let nvcc = cmd.path.file_name() + .and_then(|p| p.to_str()).map(|p| p.contains("nvcc")) + .unwrap_or(false); + + // Non-target flags + // If the flag is not conditioned on target variable, it belongs here :) + match cmd.family { + ToolFamily::Msvc => { + cmd.args.push("/nologo".into()); + let features = env::var("CARGO_CFG_TARGET_FEATURE") + .unwrap_or(String::new()); + if features.contains("crt-static") { + cmd.args.push("/MT".into()); + } else { + cmd.args.push("/MD".into()); + } + match &opt_level[..] { + "z" | "s" => cmd.args.push("/Os".into()), + "1" => cmd.args.push("/O1".into()), + // -O3 is a valid value for gcc and clang compilers, but not msvc. Cap to /O2. + "2" | "3" => cmd.args.push("/O2".into()), + _ => {} + } + } + ToolFamily::Gnu | + ToolFamily::Clang => { + cmd.args.push(format!("-O{}", opt_level).into()); + if !nvcc { + cmd.args.push("-ffunction-sections".into()); + cmd.args.push("-fdata-sections".into()); + if self.pic.unwrap_or(!target.contains("windows-gnu")) { + cmd.args.push("-fPIC".into()); + } + } else if self.pic.unwrap_or(false) { + cmd.args.push("-Xcompiler".into()); + cmd.args.push("\'-fPIC\'".into()); + } + } + } + for arg in self.envflags(if self.cpp {"CXXFLAGS"} else {"CFLAGS"}) { + cmd.args.push(arg.into()); + } + + if self.get_debug() { + cmd.args.push(cmd.family.debug_flag().into()); + } + + // Target flags + match cmd.family { + ToolFamily::Clang => { + cmd.args.push(format!("--target={}", target).into()); + } + ToolFamily::Msvc => { + if target.contains("i586") { + cmd.args.push("/ARCH:IA32".into()); + } + } + ToolFamily::Gnu => { + if target.contains("i686") || target.contains("i586") { + cmd.args.push("-m32".into()); + } else if target.contains("x86_64") || target.contains("powerpc64") { + cmd.args.push("-m64".into()); + } + + if target.contains("musl") { + cmd.args.push("-static".into()); + } + + // armv7 targets get to use armv7 instructions + if target.starts_with("armv7-unknown-linux-") { + cmd.args.push("-march=armv7-a".into()); + } + + // On android we can guarantee some extra float instructions + // (specified in the android spec online) + if target.starts_with("armv7-linux-androideabi") { + cmd.args.push("-march=armv7-a".into()); + cmd.args.push("-mfpu=vfpv3-d16".into()); + } + + // For us arm == armv6 by default + if target.starts_with("arm-unknown-linux-") { + cmd.args.push("-march=armv6".into()); + cmd.args.push("-marm".into()); + } + + // Turn codegen down on i586 to avoid some instructions. + if target.starts_with("i586-unknown-linux-") { + cmd.args.push("-march=pentium".into()); + } + + // Set codegen level for i686 correctly + if target.starts_with("i686-unknown-linux-") { + cmd.args.push("-march=i686".into()); + } + + // Looks like `musl-gcc` makes is hard for `-m32` to make its way + // all the way to the linker, so we need to actually instruct the + // linker that we're generating 32-bit executables as well. This'll + // typically only be used for build scripts which transitively use + // these flags that try to compile executables. + if target == "i686-unknown-linux-musl" { + cmd.args.push("-Wl,-melf_i386".into()); + } + + if target.starts_with("thumb") { + cmd.args.push("-mthumb".into()); + + if target.ends_with("eabihf") { + cmd.args.push("-mfloat-abi=hard".into()) + } + } + if target.starts_with("thumbv6m") { + cmd.args.push("-march=armv6s-m".into()); + } + if target.starts_with("thumbv7em") { + cmd.args.push("-march=armv7e-m".into()); + + if target.ends_with("eabihf") { + cmd.args.push("-mfpu=fpv4-sp-d16".into()) + } + } + if target.starts_with("thumbv7m") { + cmd.args.push("-march=armv7-m".into()); + } + } + } + + if target.contains("-ios") { + // FIXME: potential bug. iOS is always compiled with Clang, but Gcc compiler may be + // detected instead. + self.ios_flags(&mut cmd); + } + + if self.cpp { + match (self.cpp_set_stdlib.as_ref(), cmd.family) { + (None, _) => { } + (Some(stdlib), ToolFamily::Gnu) | + (Some(stdlib), ToolFamily::Clang) => { + cmd.args.push(format!("-stdlib=lib{}", stdlib).into()); + } + _ => { + println!("cargo:warning=cpp_set_stdlib is specified, but the {:?} compiler \ + does not support this option, ignored", cmd.family); + } + } + } + + for directory in self.include_directories.iter() { + cmd.args.push(cmd.family.include_flag().into()); + cmd.args.push(directory.into()); + } + + for flag in self.flags.iter() { + cmd.args.push(flag.into()); + } + + for &(ref key, ref value) in self.definitions.iter() { + let lead = if let ToolFamily::Msvc = cmd.family {"/"} else {"-"}; + if let &Some(ref value) = value { + cmd.args.push(format!("{}D{}={}", lead, key, value).into()); + } else { + cmd.args.push(format!("{}D{}", lead, key).into()); + } + } + cmd + } + + fn msvc_macro_assembler(&self) -> (Command, String) { + let target = self.get_target(); + let tool = if target.contains("x86_64") { + "ml64.exe" + } else { + "ml.exe" + }; + let mut cmd = windows_registry::find(&target, tool).unwrap_or_else(|| self.cmd(tool)); + for directory in self.include_directories.iter() { + cmd.arg("/I").arg(directory); + } + for &(ref key, ref value) in self.definitions.iter() { + if let &Some(ref value) = value { + cmd.arg(&format!("/D{}={}", key, value)); + } else { + cmd.arg(&format!("/D{}", key)); + } + } + + if target.contains("i686") || target.contains("i586") { + cmd.arg("/safeseh"); + } + for flag in self.flags.iter() { + cmd.arg(flag); + } + + (cmd, tool.to_string()) + } + + fn assemble(&self, lib_name: &str, dst: &Path, objects: &[PathBuf]) { + // Delete the destination if it exists as the `ar` tool at least on Unix + // appends to it, which we don't want. + let _ = fs::remove_file(&dst); + + let target = self.get_target(); + if target.contains("msvc") { + let mut cmd = match self.archiver { + Some(ref s) => self.cmd(s), + None => windows_registry::find(&target, "lib.exe").unwrap_or(self.cmd("lib.exe")), + }; + let mut out = OsString::from("/OUT:"); + out.push(dst); + run(cmd.arg(out) + .arg("/nologo") + .args(objects) + .args(&self.objects), + "lib.exe"); + + // The Rust compiler will look for libfoo.a and foo.lib, but the + // MSVC linker will also be passed foo.lib, so be sure that both + // exist for now. + let lib_dst = dst.with_file_name(format!("{}.lib", lib_name)); + let _ = fs::remove_file(&lib_dst); + fs::hard_link(&dst, &lib_dst) + .or_else(|_| { + // if hard-link fails, just copy (ignoring the number of bytes written) + fs::copy(&dst, &lib_dst).map(|_| ()) + }) + .ok() + .expect("Copying from {:?} to {:?} failed.");; + } else { + let ar = self.get_ar(); + let cmd = ar.file_name().unwrap().to_string_lossy(); + run(self.cmd(&ar) + .arg("crs") + .arg(dst) + .args(objects) + .args(&self.objects), + &cmd); + } + } + + fn ios_flags(&self, cmd: &mut Tool) { + enum ArchSpec { + Device(&'static str), + Simulator(&'static str), + } + + let target = self.get_target(); + let arch = target.split('-').nth(0).unwrap(); + let arch = match arch { + "arm" | "armv7" | "thumbv7" => ArchSpec::Device("armv7"), + "armv7s" | "thumbv7s" => ArchSpec::Device("armv7s"), + "arm64" | "aarch64" => ArchSpec::Device("arm64"), + "i386" | "i686" => ArchSpec::Simulator("-m32"), + "x86_64" => ArchSpec::Simulator("-m64"), + _ => fail("Unknown arch for iOS target"), + }; + + let sdk = match arch { + ArchSpec::Device(arch) => { + cmd.args.push("-arch".into()); + cmd.args.push(arch.into()); + cmd.args.push("-miphoneos-version-min=7.0".into()); + "iphoneos" + } + ArchSpec::Simulator(arch) => { + cmd.args.push(arch.into()); + cmd.args.push("-mios-simulator-version-min=7.0".into()); + "iphonesimulator" + } + }; + + self.print(&format!("Detecting iOS SDK path for {}", sdk)); + let sdk_path = self.cmd("xcrun") + .arg("--show-sdk-path") + .arg("--sdk") + .arg(sdk) + .stderr(Stdio::inherit()) + .output() + .unwrap() + .stdout; + + let sdk_path = String::from_utf8(sdk_path).unwrap(); + + cmd.args.push("-isysroot".into()); + cmd.args.push(sdk_path.trim().into()); + } + + fn cmd<P: AsRef<OsStr>>(&self, prog: P) -> Command { + let mut cmd = Command::new(prog); + for &(ref a, ref b) in self.env.iter() { + cmd.env(a, b); + } + return cmd; + } + + fn get_base_compiler(&self) -> Tool { + if let Some(ref c) = self.compiler { + return Tool::new(c.clone()); + } + let host = self.get_host(); + let target = self.get_target(); + let (env, msvc, gnu) = if self.cpp { + ("CXX", "cl.exe", "g++") + } else { + ("CC", "cl.exe", "gcc") + }; + + let default = if host.contains("solaris") { + // In this case, c++/cc unlikely to exist or be correct. + gnu + } else if self.cpp { + "c++" + } else { + "cc" + }; + + self.env_tool(env) + .map(|(tool, args)| { + let mut t = Tool::new(PathBuf::from(tool)); + for arg in args { + t.args.push(arg.into()); + } + return t; + }) + .or_else(|| { + if target.contains("emscripten") { + if self.cpp { + Some(Tool::new(PathBuf::from("em++"))) + } else { + Some(Tool::new(PathBuf::from("emcc"))) + } + } else { + None + } + }) + .or_else(|| windows_registry::find_tool(&target, "cl.exe")) + .unwrap_or_else(|| { + let compiler = if host.contains("windows") && target.contains("windows") { + if target.contains("msvc") { + msvc.to_string() + } else { + format!("{}.exe", gnu) + } + } else if target.contains("android") { + format!("{}-{}", target.replace("armv7", "arm"), gnu) + } else if self.get_host() != target { + // CROSS_COMPILE is of the form: "arm-linux-gnueabi-" + let cc_env = self.getenv("CROSS_COMPILE"); + let cross_compile = cc_env.as_ref().map(|s| s.trim_right_matches('-')); + let prefix = cross_compile.or(match &target[..] { + "aarch64-unknown-linux-gnu" => Some("aarch64-linux-gnu"), + "arm-unknown-linux-gnueabi" => Some("arm-linux-gnueabi"), + "arm-unknown-linux-gnueabihf" => Some("arm-linux-gnueabihf"), + "arm-unknown-linux-musleabi" => Some("arm-linux-musleabi"), + "arm-unknown-linux-musleabihf" => Some("arm-linux-musleabihf"), + "arm-unknown-netbsdelf-eabi" => Some("arm--netbsdelf-eabi"), + "armv6-unknown-netbsdelf-eabihf" => Some("armv6--netbsdelf-eabihf"), + "armv7-unknown-linux-gnueabihf" => Some("arm-linux-gnueabihf"), + "armv7-unknown-linux-musleabihf" => Some("arm-linux-musleabihf"), + "armv7-unknown-netbsdelf-eabihf" => Some("armv7--netbsdelf-eabihf"), + "i686-pc-windows-gnu" => Some("i686-w64-mingw32"), + "i686-unknown-linux-musl" => Some("musl"), + "i686-unknown-netbsdelf" => Some("i486--netbsdelf"), + "mips-unknown-linux-gnu" => Some("mips-linux-gnu"), + "mipsel-unknown-linux-gnu" => Some("mipsel-linux-gnu"), + "mips64-unknown-linux-gnuabi64" => Some("mips64-linux-gnuabi64"), + "mips64el-unknown-linux-gnuabi64" => Some("mips64el-linux-gnuabi64"), + "powerpc-unknown-linux-gnu" => Some("powerpc-linux-gnu"), + "powerpc-unknown-netbsd" => Some("powerpc--netbsd"), + "powerpc64-unknown-linux-gnu" => Some("powerpc-linux-gnu"), + "powerpc64le-unknown-linux-gnu" => Some("powerpc64le-linux-gnu"), + "s390x-unknown-linux-gnu" => Some("s390x-linux-gnu"), + "sparc64-unknown-netbsd" => Some("sparc64--netbsd"), + "sparcv9-sun-solaris" => Some("sparcv9-sun-solaris"), + "thumbv6m-none-eabi" => Some("arm-none-eabi"), + "thumbv7em-none-eabi" => Some("arm-none-eabi"), + "thumbv7em-none-eabihf" => Some("arm-none-eabi"), + "thumbv7m-none-eabi" => Some("arm-none-eabi"), + "x86_64-pc-windows-gnu" => Some("x86_64-w64-mingw32"), + "x86_64-rumprun-netbsd" => Some("x86_64-rumprun-netbsd"), + "x86_64-unknown-linux-musl" => Some("musl"), + "x86_64-unknown-netbsd" => Some("x86_64--netbsd"), + _ => None, + }); + match prefix { + Some(prefix) => format!("{}-{}", prefix, gnu), + None => default.to_string(), + } + } else { + default.to_string() + }; + Tool::new(PathBuf::from(compiler)) + }) + } + + fn get_var(&self, var_base: &str) -> Result<String, String> { + let target = self.get_target(); + let host = self.get_host(); + let kind = if host == target { "HOST" } else { "TARGET" }; + let target_u = target.replace("-", "_"); + let res = self.getenv(&format!("{}_{}", var_base, target)) + .or_else(|| self.getenv(&format!("{}_{}", var_base, target_u))) + .or_else(|| self.getenv(&format!("{}_{}", kind, var_base))) + .or_else(|| self.getenv(var_base)); + + match res { + Some(res) => Ok(res), + None => Err("could not get environment variable".to_string()), + } + } + + fn envflags(&self, name: &str) -> Vec<String> { + self.get_var(name) + .unwrap_or(String::new()) + .split(|c: char| c.is_whitespace()) + .filter(|s| !s.is_empty()) + .map(|s| s.to_string()) + .collect() + } + + fn env_tool(&self, name: &str) -> Option<(String, Vec<String>)> { + self.get_var(name).ok().map(|tool| { + let whitelist = ["ccache", "distcc"]; + for t in whitelist.iter() { + if tool.starts_with(t) && tool[t.len()..].starts_with(" ") { + return (t.to_string(), vec![tool[t.len()..].trim_left().to_string()]); + } + } + (tool, Vec::new()) + }) + } + + /// Returns the default C++ standard library for the current target: `libc++` + /// for OS X and `libstdc++` for anything else. + fn get_cpp_link_stdlib(&self) -> Option<String> { + self.cpp_link_stdlib.clone().unwrap_or_else(|| { + let target = self.get_target(); + if target.contains("msvc") { + None + } else if target.contains("darwin") { + Some("c++".to_string()) + } else if target.contains("freebsd") { + Some("c++".to_string()) + } else { + Some("stdc++".to_string()) + } + }) + } + + fn get_ar(&self) -> PathBuf { + self.archiver + .clone() + .or_else(|| self.get_var("AR").map(PathBuf::from).ok()) + .unwrap_or_else(|| { + if self.get_target().contains("android") { + PathBuf::from(format!("{}-ar", self.get_target().replace("armv7", "arm"))) + } else if self.get_target().contains("emscripten") { + PathBuf::from("emar") + } else { + PathBuf::from("ar") + } + }) + } + + fn get_target(&self) -> String { + self.target.clone().unwrap_or_else(|| self.getenv_unwrap("TARGET")) + } + + fn get_host(&self) -> String { + self.host.clone().unwrap_or_else(|| self.getenv_unwrap("HOST")) + } + + fn get_opt_level(&self) -> String { + self.opt_level.as_ref().cloned().unwrap_or_else(|| self.getenv_unwrap("OPT_LEVEL")) + } + + fn get_debug(&self) -> bool { + self.debug.unwrap_or_else(|| self.getenv_unwrap("PROFILE") == "debug") + } + + fn get_out_dir(&self) -> PathBuf { + self.out_dir.clone().unwrap_or_else(|| env::var_os("OUT_DIR").map(PathBuf::from).unwrap()) + } + + fn getenv(&self, v: &str) -> Option<String> { + let r = env::var(v).ok(); + self.print(&format!("{} = {:?}", v, r)); + r + } + + fn getenv_unwrap(&self, v: &str) -> String { + match self.getenv(v) { + Some(s) => s, + None => fail(&format!("environment variable `{}` not defined", v)), + } + } + + fn print(&self, s: &str) { + if self.cargo_metadata { + println!("{}", s); + } + } +} + +impl Tool { + fn new(path: PathBuf) -> Tool { + // Try to detect family of the tool from its name, falling back to Gnu. + let family = if let Some(fname) = path.file_name().and_then(|p| p.to_str()) { + if fname.contains("clang") { + ToolFamily::Clang + } else if fname.contains("cl") { + ToolFamily::Msvc + } else { + ToolFamily::Gnu + } + } else { + ToolFamily::Gnu + }; + Tool { + path: path, + args: Vec::new(), + env: Vec::new(), + family: family + } + } + + /// Converts this compiler into a `Command` that's ready to be run. + /// + /// This is useful for when the compiler needs to be executed and the + /// command returned will already have the initial arguments and environment + /// variables configured. + pub fn to_command(&self) -> Command { + let mut cmd = Command::new(&self.path); + cmd.args(&self.args); + for &(ref k, ref v) in self.env.iter() { + cmd.env(k, v); + } + cmd + } + + /// Returns the path for this compiler. + /// + /// Note that this may not be a path to a file on the filesystem, e.g. "cc", + /// but rather something which will be resolved when a process is spawned. + pub fn path(&self) -> &Path { + &self.path + } + + /// Returns the default set of arguments to the compiler needed to produce + /// executables for the target this compiler generates. + pub fn args(&self) -> &[OsString] { + &self.args + } + + /// Returns the set of environment variables needed for this compiler to + /// operate. + /// + /// This is typically only used for MSVC compilers currently. + pub fn env(&self) -> &[(OsString, OsString)] { + &self.env + } +} + +fn run(cmd: &mut Command, program: &str) { + let (mut child, print) = spawn(cmd, program); + let status = child.wait().expect("failed to wait on child process"); + print.join().unwrap(); + println!("{:?}", status); + if !status.success() { + fail(&format!("command did not execute successfully, got: {}", status)); + } +} + +fn run_output(cmd: &mut Command, program: &str) -> Vec<u8> { + cmd.stdout(Stdio::piped()); + let (mut child, print) = spawn(cmd, program); + let mut stdout = vec![]; + child.stdout.take().unwrap().read_to_end(&mut stdout).unwrap(); + let status = child.wait().expect("failed to wait on child process"); + print.join().unwrap(); + println!("{:?}", status); + if !status.success() { + fail(&format!("command did not execute successfully, got: {}", status)); + } + return stdout +} + +fn spawn(cmd: &mut Command, program: &str) -> (Child, JoinHandle<()>) { + println!("running: {:?}", cmd); + + // Capture the standard error coming from these programs, and write it out + // with cargo:warning= prefixes. Note that this is a bit wonky to avoid + // requiring the output to be UTF-8, we instead just ship bytes from one + // location to another. + match cmd.stderr(Stdio::piped()).spawn() { + Ok(mut child) => { + let stderr = BufReader::new(child.stderr.take().unwrap()); + let print = thread::spawn(move || { + for line in stderr.split(b'\n').filter_map(|l| l.ok()) { + print!("cargo:warning="); + std::io::stdout().write_all(&line).unwrap(); + println!(""); + } + }); + (child, print) + } + Err(ref e) if e.kind() == io::ErrorKind::NotFound => { + let extra = if cfg!(windows) { + " (see https://github.com/alexcrichton/gcc-rs#compile-time-requirements \ + for help)" + } else { + "" + }; + fail(&format!("failed to execute command: {}\nIs `{}` \ + not installed?{}", + e, + program, + extra)); + } + Err(e) => fail(&format!("failed to execute command: {}", e)), + } +} + +fn fail(s: &str) -> ! { + println!("\n\n{}\n\n", s); + panic!() +} diff --git a/gcc/src/registry.rs b/gcc/src/registry.rs new file mode 100644 index 0000000..a452723 --- /dev/null +++ b/gcc/src/registry.rs @@ -0,0 +1,190 @@ +// Copyright 2015 The Rust Project Developers. See the COPYRIGHT +// file at the top-level directory of this distribution and at +// http://rust-lang.org/COPYRIGHT. +// +// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or +// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license +// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your +// option. This file may not be copied, modified, or distributed +// except according to those terms. + +use std::ffi::{OsString, OsStr}; +use std::io; +use std::ops::RangeFrom; +use std::os::raw; +use std::os::windows::prelude::*; + +pub struct RegistryKey(Repr); + +type HKEY = *mut u8; +type DWORD = u32; +type LPDWORD = *mut DWORD; +type LPCWSTR = *const u16; +type LPWSTR = *mut u16; +type LONG = raw::c_long; +type PHKEY = *mut HKEY; +type PFILETIME = *mut u8; +type LPBYTE = *mut u8; +type REGSAM = u32; + +const ERROR_SUCCESS: DWORD = 0; +const ERROR_NO_MORE_ITEMS: DWORD = 259; +const HKEY_LOCAL_MACHINE: HKEY = 0x80000002 as HKEY; +const REG_SZ: DWORD = 1; +const KEY_READ: DWORD = 0x20019; +const KEY_WOW64_32KEY: DWORD = 0x200; + +#[link(name = "advapi32")] +extern "system" { + fn RegOpenKeyExW(key: HKEY, + lpSubKey: LPCWSTR, + ulOptions: DWORD, + samDesired: REGSAM, + phkResult: PHKEY) + -> LONG; + fn RegEnumKeyExW(key: HKEY, + dwIndex: DWORD, + lpName: LPWSTR, + lpcName: LPDWORD, + lpReserved: LPDWORD, + lpClass: LPWSTR, + lpcClass: LPDWORD, + lpftLastWriteTime: PFILETIME) + -> LONG; + fn RegQueryValueExW(hKey: HKEY, + lpValueName: LPCWSTR, + lpReserved: LPDWORD, + lpType: LPDWORD, + lpData: LPBYTE, + lpcbData: LPDWORD) + -> LONG; + fn RegCloseKey(hKey: HKEY) -> LONG; +} + +struct OwnedKey(HKEY); + +enum Repr { + Const(HKEY), + Owned(OwnedKey), +} + +pub struct Iter<'a> { + idx: RangeFrom<DWORD>, + key: &'a RegistryKey, +} + +unsafe impl Sync for Repr {} +unsafe impl Send for Repr {} + +pub static LOCAL_MACHINE: RegistryKey = RegistryKey(Repr::Const(HKEY_LOCAL_MACHINE)); + +impl RegistryKey { + fn raw(&self) -> HKEY { + match self.0 { + Repr::Const(val) => val, + Repr::Owned(ref val) => val.0, + } + } + + pub fn open(&self, key: &OsStr) -> io::Result<RegistryKey> { + let key = key.encode_wide().chain(Some(0)).collect::<Vec<_>>(); + let mut ret = 0 as *mut _; + let err = unsafe { + RegOpenKeyExW(self.raw(), + key.as_ptr(), + 0, + KEY_READ | KEY_WOW64_32KEY, + &mut ret) + }; + if err == ERROR_SUCCESS as LONG { + Ok(RegistryKey(Repr::Owned(OwnedKey(ret)))) + } else { + Err(io::Error::from_raw_os_error(err as i32)) + } + } + + pub fn iter(&self) -> Iter { + Iter { + idx: 0.., + key: self, + } + } + + pub fn query_str(&self, name: &str) -> io::Result<OsString> { + let name: &OsStr = name.as_ref(); + let name = name.encode_wide().chain(Some(0)).collect::<Vec<_>>(); + let mut len = 0; + let mut kind = 0; + unsafe { + let err = RegQueryValueExW(self.raw(), + name.as_ptr(), + 0 as *mut _, + &mut kind, + 0 as *mut _, + &mut len); + if err != ERROR_SUCCESS as LONG { + return Err(io::Error::from_raw_os_error(err as i32)); + } + if kind != REG_SZ { + return Err(io::Error::new(io::ErrorKind::Other, "registry key wasn't a string")); + } + + // The length here is the length in bytes, but we're using wide + // characters so we need to be sure to halve it for the capacity + // passed in. + let mut v = Vec::with_capacity(len as usize / 2); + let err = RegQueryValueExW(self.raw(), + name.as_ptr(), + 0 as *mut _, + 0 as *mut _, + v.as_mut_ptr() as *mut _, + &mut len); + if err != ERROR_SUCCESS as LONG { + return Err(io::Error::from_raw_os_error(err as i32)); + } + v.set_len(len as usize / 2); + + // Some registry keys may have a terminating nul character, but + // we're not interested in that, so chop it off if it's there. + if v[v.len() - 1] == 0 { + v.pop(); + } + Ok(OsString::from_wide(&v)) + } + } +} + +impl Drop for OwnedKey { + fn drop(&mut self) { + unsafe { + RegCloseKey(self.0); + } + } +} + +impl<'a> Iterator for Iter<'a> { + type Item = io::Result<OsString>; + + fn next(&mut self) -> Option<io::Result<OsString>> { + self.idx.next().and_then(|i| unsafe { + let mut v = Vec::with_capacity(256); + let mut len = v.capacity() as DWORD; + let ret = RegEnumKeyExW(self.key.raw(), + i, + v.as_mut_ptr(), + &mut len, + 0 as *mut _, + 0 as *mut _, + 0 as *mut _, + 0 as *mut _); + if ret == ERROR_NO_MORE_ITEMS as LONG { + None + } else if ret != ERROR_SUCCESS as LONG { + Some(Err(io::Error::from_raw_os_error(ret as i32))) + } else { + v.set_len(len as usize); + Some(Ok(OsString::from_wide(&v))) + } + }) + } +} diff --git a/gcc/src/windows_registry.rs b/gcc/src/windows_registry.rs new file mode 100644 index 0000000..08b1df5 --- /dev/null +++ b/gcc/src/windows_registry.rs @@ -0,0 +1,424 @@ +// Copyright 2015 The Rust Project Developers. See the COPYRIGHT +// file at the top-level directory of this distribution and at +// http://rust-lang.org/COPYRIGHT. +// +// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or +// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license +// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your +// option. This file may not be copied, modified, or distributed +// except according to those terms. + +//! A helper module to probe the Windows Registry when looking for +//! windows-specific tools. + +use std::process::Command; + +use Tool; + +macro_rules! otry { + ($expr:expr) => (match $expr { + Some(val) => val, + None => return None, + }) +} + +/// Attempts to find a tool within an MSVC installation using the Windows +/// registry as a point to search from. +/// +/// The `target` argument is the target that the tool should work for (e.g. +/// compile or link for) and the `tool` argument is the tool to find (e.g. +/// `cl.exe` or `link.exe`). +/// +/// This function will return `None` if the tool could not be found, or it will +/// return `Some(cmd)` which represents a command that's ready to execute the +/// tool with the appropriate environment variables set. +/// +/// Note that this function always returns `None` for non-MSVC targets. +pub fn find(target: &str, tool: &str) -> Option<Command> { + find_tool(target, tool).map(|c| c.to_command()) +} + +/// Similar to the `find` function above, this function will attempt the same +/// operation (finding a MSVC tool in a local install) but instead returns a +/// `Tool` which may be introspected. +#[cfg(not(windows))] +pub fn find_tool(_target: &str, _tool: &str) -> Option<Tool> { + None +} + +/// Documented above. +#[cfg(windows)] +pub fn find_tool(target: &str, tool: &str) -> Option<Tool> { + use std::env; + use std::ffi::OsString; + use std::mem; + use std::path::{Path, PathBuf}; + use registry::{RegistryKey, LOCAL_MACHINE}; + + struct MsvcTool { + tool: PathBuf, + libs: Vec<PathBuf>, + path: Vec<PathBuf>, + include: Vec<PathBuf>, + } + + impl MsvcTool { + fn new(tool: PathBuf) -> MsvcTool { + MsvcTool { + tool: tool, + libs: Vec::new(), + path: Vec::new(), + include: Vec::new(), + } + } + + fn into_tool(self) -> Tool { + let MsvcTool { tool, libs, path, include } = self; + let mut tool = Tool::new(tool.into()); + add_env(&mut tool, "LIB", libs); + add_env(&mut tool, "PATH", path); + add_env(&mut tool, "INCLUDE", include); + tool + } + } + + // This logic is all tailored for MSVC, if we're not that then bail out + // early. + if !target.contains("msvc") { + return None; + } + + // Looks like msbuild isn't located in the same location as other tools like + // cl.exe and lib.exe. To handle this we probe for it manually with + // dedicated registry keys. + if tool.contains("msbuild") { + return find_msbuild(target); + } + + // If VCINSTALLDIR is set, then someone's probably already run vcvars and we + // should just find whatever that indicates. + if env::var_os("VCINSTALLDIR").is_some() { + return env::var_os("PATH") + .and_then(|path| env::split_paths(&path).map(|p| p.join(tool)).find(|p| p.exists())) + .map(|path| Tool::new(path.into())); + } + + // Ok, if we're here, now comes the fun part of the probing. Default shells + // or shells like MSYS aren't really configured to execute `cl.exe` and the + // various compiler tools shipped as part of Visual Studio. Here we try to + // first find the relevant tool, then we also have to be sure to fill in + // environment variables like `LIB`, `INCLUDE`, and `PATH` to ensure that + // the tool is actually usable. + + return find_msvc_latest(tool, target, "15.0") + .or_else(|| find_msvc_latest(tool, target, "14.0")) + .or_else(|| find_msvc_12(tool, target)) + .or_else(|| find_msvc_11(tool, target)); + + // For MSVC 14 or newer we need to find the Universal CRT as well as either + // the Windows 10 SDK or Windows 8.1 SDK. + fn find_msvc_latest(tool: &str, target: &str, ver: &str) -> Option<Tool> { + let vcdir = otry!(get_vc_dir(ver)); + let mut tool = otry!(get_tool(tool, &vcdir, target)); + let sub = otry!(lib_subdir(target)); + let (ucrt, ucrt_version) = otry!(get_ucrt_dir()); + + let ucrt_include = ucrt.join("include").join(&ucrt_version); + tool.include.push(ucrt_include.join("ucrt")); + + let ucrt_lib = ucrt.join("lib").join(&ucrt_version); + tool.libs.push(ucrt_lib.join("ucrt").join(sub)); + + if let Some((sdk, version)) = get_sdk10_dir() { + tool.path.push(sdk.join("bin").join(sub)); + let sdk_lib = sdk.join("lib").join(&version); + tool.libs.push(sdk_lib.join("um").join(sub)); + let sdk_include = sdk.join("include").join(&version); + tool.include.push(sdk_include.join("um")); + tool.include.push(sdk_include.join("winrt")); + tool.include.push(sdk_include.join("shared")); + } else if let Some(sdk) = get_sdk81_dir() { + tool.path.push(sdk.join("bin").join(sub)); + let sdk_lib = sdk.join("lib").join("winv6.3"); + tool.libs.push(sdk_lib.join("um").join(sub)); + let sdk_include = sdk.join("include"); + tool.include.push(sdk_include.join("um")); + tool.include.push(sdk_include.join("winrt")); + tool.include.push(sdk_include.join("shared")); + } else { + return None; + } + Some(tool.into_tool()) + } + + // For MSVC 12 we need to find the Windows 8.1 SDK. + fn find_msvc_12(tool: &str, target: &str) -> Option<Tool> { + let vcdir = otry!(get_vc_dir("12.0")); + let mut tool = otry!(get_tool(tool, &vcdir, target)); + let sub = otry!(lib_subdir(target)); + let sdk81 = otry!(get_sdk81_dir()); + tool.path.push(sdk81.join("bin").join(sub)); + let sdk_lib = sdk81.join("lib").join("winv6.3"); + tool.libs.push(sdk_lib.join("um").join(sub)); + let sdk_include = sdk81.join("include"); + tool.include.push(sdk_include.join("shared")); + tool.include.push(sdk_include.join("um")); + tool.include.push(sdk_include.join("winrt")); + Some(tool.into_tool()) + } + + // For MSVC 11 we need to find the Windows 8 SDK. + fn find_msvc_11(tool: &str, target: &str) -> Option<Tool> { + let vcdir = otry!(get_vc_dir("11.0")); + let mut tool = otry!(get_tool(tool, &vcdir, target)); + let sub = otry!(lib_subdir(target)); + let sdk8 = otry!(get_sdk8_dir()); + tool.path.push(sdk8.join("bin").join(sub)); + let sdk_lib = sdk8.join("lib").join("win8"); + tool.libs.push(sdk_lib.join("um").join(sub)); + let sdk_include = sdk8.join("include"); + tool.include.push(sdk_include.join("shared")); + tool.include.push(sdk_include.join("um")); + tool.include.push(sdk_include.join("winrt")); + Some(tool.into_tool()) + } + + fn add_env(tool: &mut Tool, env: &str, paths: Vec<PathBuf>) { + let prev = env::var_os(env).unwrap_or(OsString::new()); + let prev = env::split_paths(&prev); + let new = paths.into_iter().chain(prev); + tool.env.push((env.to_string().into(), env::join_paths(new).unwrap())); + } + + // Given a possible MSVC installation directory, we look for the linker and + // then add the MSVC library path. + fn get_tool(tool: &str, path: &Path, target: &str) -> Option<MsvcTool> { + bin_subdir(target) + .into_iter() + .map(|(sub, host)| (path.join("bin").join(sub).join(tool), path.join("bin").join(host))) + .filter(|&(ref path, _)| path.is_file()) + .map(|(path, host)| { + let mut tool = MsvcTool::new(path); + tool.path.push(host); + tool + }) + .filter_map(|mut tool| { + let sub = otry!(vc_lib_subdir(target)); + tool.libs.push(path.join("lib").join(sub)); + tool.include.push(path.join("include")); + let atlmfc_path = path.join("atlmfc"); + if atlmfc_path.exists() { + tool.libs.push(atlmfc_path.join("lib").join(sub)); + tool.include.push(atlmfc_path.join("include")); + } + Some(tool) + }) + .next() + } + + // To find MSVC we look in a specific registry key for the version we are + // trying to find. + fn get_vc_dir(ver: &str) -> Option<PathBuf> { + let key = r"SOFTWARE\Microsoft\VisualStudio\SxS\VC7"; + let key = otry!(LOCAL_MACHINE.open(key.as_ref()).ok()); + let path = otry!(key.query_str(ver).ok()); + Some(path.into()) + } + + // To find the Universal CRT we look in a specific registry key for where + // all the Universal CRTs are located and then sort them asciibetically to + // find the newest version. While this sort of sorting isn't ideal, it is + // what vcvars does so that's good enough for us. + // + // Returns a pair of (root, version) for the ucrt dir if found + fn get_ucrt_dir() -> Option<(PathBuf, String)> { + let key = r"SOFTWARE\Microsoft\Windows Kits\Installed Roots"; + let key = otry!(LOCAL_MACHINE.open(key.as_ref()).ok()); + let root = otry!(key.query_str("KitsRoot10").ok()); + let readdir = otry!(Path::new(&root).join("lib").read_dir().ok()); + let max_libdir = otry!(readdir.filter_map(|dir| dir.ok()) + .map(|dir| dir.path()) + .filter(|dir| { + dir.components() + .last() + .and_then(|c| c.as_os_str().to_str()) + .map(|c| c.starts_with("10.") && dir.join("ucrt").is_dir()) + .unwrap_or(false) + }) + .max()); + let version = max_libdir.components().last().unwrap(); + let version = version.as_os_str().to_str().unwrap().to_string(); + Some((root.into(), version)) + } + + // Vcvars finds the correct version of the Windows 10 SDK by looking + // for the include `um\Windows.h` because sometimes a given version will + // only have UCRT bits without the rest of the SDK. Since we only care about + // libraries and not includes, we instead look for `um\x64\kernel32.lib`. + // Since the 32-bit and 64-bit libraries are always installed together we + // only need to bother checking x64, making this code a tiny bit simpler. + // Like we do for the Universal CRT, we sort the possibilities + // asciibetically to find the newest one as that is what vcvars does. + fn get_sdk10_dir() -> Option<(PathBuf, String)> { + let key = r"SOFTWARE\Microsoft\Microsoft SDKs\Windows\v10.0"; + let key = otry!(LOCAL_MACHINE.open(key.as_ref()).ok()); + let root = otry!(key.query_str("InstallationFolder").ok()); + let readdir = otry!(Path::new(&root).join("lib").read_dir().ok()); + let mut dirs = readdir.filter_map(|dir| dir.ok()) + .map(|dir| dir.path()) + .collect::<Vec<_>>(); + dirs.sort(); + let dir = otry!(dirs.into_iter() + .rev() + .filter(|dir| dir.join("um").join("x64").join("kernel32.lib").is_file()) + .next()); + let version = dir.components().last().unwrap(); + let version = version.as_os_str().to_str().unwrap().to_string(); + Some((root.into(), version)) + } + + // Interestingly there are several subdirectories, `win7` `win8` and + // `winv6.3`. Vcvars seems to only care about `winv6.3` though, so the same + // applies to us. Note that if we were targetting kernel mode drivers + // instead of user mode applications, we would care. + fn get_sdk81_dir() -> Option<PathBuf> { + let key = r"SOFTWARE\Microsoft\Microsoft SDKs\Windows\v8.1"; + let key = otry!(LOCAL_MACHINE.open(key.as_ref()).ok()); + let root = otry!(key.query_str("InstallationFolder").ok()); + Some(root.into()) + } + + fn get_sdk8_dir() -> Option<PathBuf> { + let key = r"SOFTWARE\Microsoft\Microsoft SDKs\Windows\v8.0"; + let key = otry!(LOCAL_MACHINE.open(key.as_ref()).ok()); + let root = otry!(key.query_str("InstallationFolder").ok()); + Some(root.into()) + } + + const PROCESSOR_ARCHITECTURE_INTEL: u16 = 0; + const PROCESSOR_ARCHITECTURE_AMD64: u16 = 9; + const X86: u16 = PROCESSOR_ARCHITECTURE_INTEL; + const X86_64: u16 = PROCESSOR_ARCHITECTURE_AMD64; + + // When choosing the tool to use, we have to choose the one which matches + // the target architecture. Otherwise we end up in situations where someone + // on 32-bit Windows is trying to cross compile to 64-bit and it tries to + // invoke the native 64-bit compiler which won't work. + // + // For the return value of this function, the first member of the tuple is + // the folder of the tool we will be invoking, while the second member is + // the folder of the host toolchain for that tool which is essential when + // using a cross linker. We return a Vec since on x64 there are often two + // linkers that can target the architecture we desire. The 64-bit host + // linker is preferred, and hence first, due to 64-bit allowing it more + // address space to work with and potentially being faster. + fn bin_subdir(target: &str) -> Vec<(&'static str, &'static str)> { + let arch = target.split('-').next().unwrap(); + match (arch, host_arch()) { + ("i586", X86) | ("i686", X86) => vec![("", "")], + ("i586", X86_64) | ("i686", X86_64) => vec![("amd64_x86", "amd64"), ("", "")], + ("x86_64", X86) => vec![("x86_amd64", "")], + ("x86_64", X86_64) => vec![("amd64", "amd64"), ("x86_amd64", "")], + ("arm", X86) => vec![("x86_arm", "")], + ("arm", X86_64) => vec![("amd64_arm", "amd64"), ("x86_arm", "")], + _ => vec![], + } + } + + fn lib_subdir(target: &str) -> Option<&'static str> { + let arch = target.split('-').next().unwrap(); + match arch { + "i586" | "i686" => Some("x86"), + "x86_64" => Some("x64"), + "arm" => Some("arm"), + _ => None, + } + } + + // MSVC's x86 libraries are not in a subfolder + fn vc_lib_subdir(target: &str) -> Option<&'static str> { + let arch = target.split('-').next().unwrap(); + match arch { + "i586" | "i686" => Some(""), + "x86_64" => Some("amd64"), + "arm" => Some("arm"), + _ => None, + } + } + + #[allow(bad_style)] + fn host_arch() -> u16 { + type DWORD = u32; + type WORD = u16; + type LPVOID = *mut u8; + type DWORD_PTR = usize; + + #[repr(C)] + struct SYSTEM_INFO { + wProcessorArchitecture: WORD, + _wReserved: WORD, + _dwPageSize: DWORD, + _lpMinimumApplicationAddress: LPVOID, + _lpMaximumApplicationAddress: LPVOID, + _dwActiveProcessorMask: DWORD_PTR, + _dwNumberOfProcessors: DWORD, + _dwProcessorType: DWORD, + _dwAllocationGranularity: DWORD, + _wProcessorLevel: WORD, + _wProcessorRevision: WORD, + } + + extern "system" { + fn GetNativeSystemInfo(lpSystemInfo: *mut SYSTEM_INFO); + } + + unsafe { + let mut info = mem::zeroed(); + GetNativeSystemInfo(&mut info); + info.wProcessorArchitecture + } + } + + // Given a registry key, look at all the sub keys and find the one which has + // the maximal numeric value. + // + // Returns the name of the maximal key as well as the opened maximal key. + fn max_version(key: &RegistryKey) -> Option<(OsString, RegistryKey)> { + let mut max_vers = 0; + let mut max_key = None; + for subkey in key.iter().filter_map(|k| k.ok()) { + let val = subkey.to_str() + .and_then(|s| s.trim_left_matches("v").replace(".", "").parse().ok()); + let val = match val { + Some(s) => s, + None => continue, + }; + if val > max_vers { + if let Ok(k) = key.open(&subkey) { + max_vers = val; + max_key = Some((subkey, k)); + } + } + } + max_key + } + + // see http://stackoverflow.com/questions/328017/path-to-msbuild + fn find_msbuild(target: &str) -> Option<Tool> { + let key = r"SOFTWARE\Microsoft\MSBuild\ToolsVersions"; + LOCAL_MACHINE.open(key.as_ref()) + .ok() + .and_then(|key| { + max_version(&key).and_then(|(_vers, key)| key.query_str("MSBuildToolsPath").ok()) + }) + .map(|path| { + let mut path = PathBuf::from(path); + path.push("MSBuild.exe"); + let mut tool = Tool::new(path); + if target.contains("x86_64") { + tool.env.push(("Platform".into(), "X64".into())); + } + tool + }) + } +} diff --git a/gcc/tests/cc_env.rs b/gcc/tests/cc_env.rs new file mode 100644 index 0000000..559dbe8 --- /dev/null +++ b/gcc/tests/cc_env.rs @@ -0,0 +1,49 @@ +extern crate tempdir; +extern crate gcc; + +use std::env; + +mod support; +use support::Test; + +#[test] +fn main() { + ccache(); + distcc(); + ccache_spaces(); +} + +fn ccache() { + let test = Test::gnu(); + test.shim("ccache"); + + env::set_var("CC", "ccache lol-this-is-not-a-compiler foo"); + test.gcc().file("foo.c").compile("libfoo.a"); + + test.cmd(0) + .must_have("lol-this-is-not-a-compiler foo") + .must_have("foo.c") + .must_not_have("ccache"); +} + +fn ccache_spaces() { + let test = Test::gnu(); + test.shim("ccache"); + + env::set_var("CC", "ccache lol-this-is-not-a-compiler foo"); + test.gcc().file("foo.c").compile("libfoo.a"); + test.cmd(0).must_have("lol-this-is-not-a-compiler foo"); +} + +fn distcc() { + let test = Test::gnu(); + test.shim("distcc"); + + env::set_var("CC", "distcc lol-this-is-not-a-compiler foo"); + test.gcc().file("foo.c").compile("libfoo.a"); + + test.cmd(0) + .must_have("lol-this-is-not-a-compiler foo") + .must_have("foo.c") + .must_not_have("distcc"); +} diff --git a/gcc/tests/support/mod.rs b/gcc/tests/support/mod.rs new file mode 100644 index 0000000..135a663 --- /dev/null +++ b/gcc/tests/support/mod.rs @@ -0,0 +1,112 @@ +#![allow(dead_code)] + +use std::env; +use std::ffi::OsStr; +use std::fs::{self, File}; +use std::io::prelude::*; +use std::path::PathBuf; + +use gcc; +use tempdir::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 { + let mut gcc = PathBuf::from(env::current_exe().unwrap()); + gcc.pop(); + if gcc.ends_with("deps") { + gcc.pop(); + } + gcc.push(format!("gcc-shim{}", env::consts::EXE_SUFFIX)); + Test { + td: TempDir::new("gcc-test").unwrap(), + gcc: gcc, + msvc: false, + } + } + + pub fn gnu() -> Test { + let t = Test::new(); + t.shim("cc").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 fname = format!("{}{}", name, env::consts::EXE_SUFFIX); + fs::hard_link(&self.gcc, self.td.path().join(&fname)) + .or_else(|_| fs::copy(&self.gcc, self.td.path().join(&fname)).map(|_| ())) + .unwrap(); + self + } + + pub fn gcc(&self) -> gcc::Config { + let mut cfg = gcc::Config::new(); + let mut path = env::split_paths(&env::var_os("PATH").unwrap()).collect::<Vec<_>>(); + path.insert(0, self.td.path().to_owned()); + 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", env::join_paths(path).unwrap()) + .__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 + } + + 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) + } +} diff --git a/gcc/tests/test.rs b/gcc/tests/test.rs new file mode 100644 index 0000000..1c51e09 --- /dev/null +++ b/gcc/tests/test.rs @@ -0,0 +1,229 @@ +extern crate gcc; +extern crate tempdir; + +use support::Test; + +mod support; + +#[test] +fn gnu_smoke() { + let test = Test::gnu(); + test.gcc() + .file("foo.c") + .compile("libfoo.a"); + + test.cmd(0) + .must_have("-O2") + .must_have("foo.c") + .must_not_have("-g") + .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() { + let test = Test::gnu(); + test.gcc() + .opt_level(1) + .file("foo.c") + .compile("libfoo.a"); + + test.cmd(0) + .must_have("-O1") + .must_not_have("-O2"); +} + +#[test] +fn gnu_opt_level_s() { + let test = Test::gnu(); + test.gcc() + .opt_level_str("s") + .file("foo.c") + .compile("libfoo.a"); + + 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("libfoo.a"); + test.cmd(0).must_have("-g"); +} + +#[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("libfoo.a"); + + test.cmd(0) + .must_have("-fPIC") + .must_have("-m64"); + } +} + +#[test] +fn gnu_x86_64_no_pic() { + 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("libfoo.a"); + + 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("libfoo.a"); + + 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("libfoo.a"); + + test.cmd(0).must_have("-fPIC"); + } +} + +#[test] +fn gnu_set_stdlib() { + let test = Test::gnu(); + test.gcc() + .cpp_set_stdlib(Some("foo")) + .file("foo.c") + .compile("libfoo.a"); + + 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("libfoo.a"); + + test.cmd(0).must_have("-I").must_have("foo/bar"); +} + +#[test] +fn gnu_define() { + let test = Test::gnu(); + test.gcc() + .define("FOO", Some("bar")) + .define("BAR", None) + .file("foo.c") + .compile("libfoo.a"); + + 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("libfoo.a"); + test.cmd(0).must_have("foo.S"); +} + +#[test] +fn msvc_smoke() { + let test = Test::msvc(); + test.gcc() + .file("foo.c") + .compile("libfoo.a"); + + test.cmd(0) + .must_have("/O2") + .must_have("foo.c") + .must_not_have("/Z7") + .must_have("/c"); + test.cmd(1).must_have(test.td.path().join("foo.o")); +} + +#[test] +fn msvc_opt_level_0() { + let test = Test::msvc(); + test.gcc() + .opt_level(0) + .file("foo.c") + .compile("libfoo.a"); + + test.cmd(0).must_not_have("/O2"); +} + +#[test] +fn msvc_debug() { + let test = Test::msvc(); + test.gcc() + .debug(true) + .file("foo.c") + .compile("libfoo.a"); + test.cmd(0).must_have("/Z7"); +} + +#[test] +fn msvc_include() { + let test = Test::msvc(); + test.gcc() + .include("foo/bar") + .file("foo.c") + .compile("libfoo.a"); + + test.cmd(0).must_have("/I").must_have("foo/bar"); +} + +#[test] +fn msvc_define() { + let test = Test::msvc(); + test.gcc() + .define("FOO", Some("bar")) + .define("BAR", None) + .file("foo.c") + .compile("libfoo.a"); + + test.cmd(0).must_have("/DFOO=bar").must_have("/DBAR"); +} |