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//! Compiles the profiler part of the `compiler-rt` library.
//!
//! See the build.rs for libcompiler_builtins crate for details.
use std::env;
use std::path::Path;
fn main() {
let target = env::var("TARGET").expect("TARGET was not set");
let cfg = &mut cc::Build::new();
let mut profile_sources = vec!["GCDAProfiling.c",
"InstrProfiling.c",
"InstrProfilingBuffer.c",
"InstrProfilingFile.c",
"InstrProfilingMerge.c",
"InstrProfilingMergeFile.c",
"InstrProfilingNameVar.c",
"InstrProfilingPlatformDarwin.c",
"InstrProfilingPlatformLinux.c",
"InstrProfilingPlatformOther.c",
"InstrProfilingRuntime.cc",
"InstrProfilingUtil.c",
"InstrProfilingValue.c",
"InstrProfilingWriter.c"];
if target.contains("msvc") {
// Don't pull in extra libraries on MSVC
cfg.flag("/Zl");
profile_sources.push("WindowsMMap.c");
cfg.define("strdup", Some("_strdup"));
cfg.define("open", Some("_open"));
cfg.define("fdopen", Some("_fdopen"));
cfg.define("getpid", Some("_getpid"));
cfg.define("fileno", Some("_fileno"));
} else {
// Turn off various features of gcc and such, mostly copying
// compiler-rt's build system already
cfg.flag("-fno-builtin");
cfg.flag("-fvisibility=hidden");
cfg.flag("-fomit-frame-pointer");
cfg.flag("-ffreestanding");
cfg.define("VISIBILITY_HIDDEN", None);
cfg.define("COMPILER_RT_HAS_UNAME", Some("1"));
}
// The source for `compiler-rt` comes from the `compiler-builtins` crate, so
// load our env var set by cargo to find the source code.
let root = env::var_os("DEP_COMPILER_RT_COMPILER_RT").unwrap();
let root = Path::new(&root);
for src in profile_sources {
cfg.file(root.join("lib").join("profile").join(src));
}
cfg.warnings(false);
cfg.compile("profiler-rt");
}
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