src/libprofiler_builtins/build.rs

   1 // Copyright 2017 The Rust Project Developers. See the COPYRIGHT
   2 // file at the top-level directory of this distribution and at
   3 // http://rust-lang.org/COPYRIGHT.
   4 //
   5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
   6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
   7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
   8 // option. This file may not be copied, modified, or distributed
   9 // except according to those terms.
  10
  11 //! Compiles the profiler part of the `compiler-rt` library.
  12 //!
  13 //! See the build.rs for libcompiler_builtins crate for details.
  14
  15 extern crate cc;
  16
  17 use std::env;
  18 use std::path::Path;
  19
  20 fn main() {
  21     let target = env::var("TARGET").expect("TARGET was not set");
  22     let cfg = &mut cc::Build::new();
  23
  24     let mut profile_sources = vec!["GCDAProfiling.c",
  25                                    "InstrProfiling.c",
  26                                    "InstrProfilingBuffer.c",
  27                                    "InstrProfilingFile.c",
  28                                    "InstrProfilingMerge.c",
  29                                    "InstrProfilingMergeFile.c",
  30                                    "InstrProfilingPlatformDarwin.c",
  31                                    "InstrProfilingPlatformLinux.c",
  32                                    "InstrProfilingPlatformOther.c",
  33                                    "InstrProfilingRuntime.cc",
  34                                    "InstrProfilingUtil.c",
  35                                    "InstrProfilingValue.c",
  36                                    "InstrProfilingWriter.c"];
  37
  38     if target.contains("msvc") {
  39         // Don't pull in extra libraries on MSVC
  40         cfg.flag("/Zl");
  41         profile_sources.push("WindowsMMap.c");
  42         cfg.define("strdup", Some("_strdup"));
  43         cfg.define("open", Some("_open"));
  44         cfg.define("fdopen", Some("_fdopen"));
  45     } else {
  46         // Turn off various features of gcc and such, mostly copying
  47         // compiler-rt's build system already
  48         cfg.flag("-fno-builtin");
  49         cfg.flag("-fvisibility=hidden");
  50         cfg.flag("-fomit-frame-pointer");
  51         cfg.flag("-ffreestanding");
  52         cfg.define("VISIBILITY_HIDDEN", None);
  53     }
  54
  55     for src in profile_sources {
  56         cfg.file(Path::new("../libcompiler_builtins/compiler-rt/lib/profile").join(src));
  57     }
  58
  59     cfg.compile("libprofiler-rt.a");
  60 }