2016-04-29 19:39:28 +02:00
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#![deny(warnings)]
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2017-01-31 22:27:51 +01:00
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use std::env;
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2016-01-22 00:21:13 +01:00
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fn main() {
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2016-09-25 17:59:12 +02:00
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let target = env::var("TARGET").expect("TARGET was not set");
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2016-03-08 22:15:58 +01:00
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if target.contains("linux") {
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rustc: Implement custom panic runtimes
This commit is an implementation of [RFC 1513] which allows applications to
alter the behavior of panics at compile time. A new compiler flag, `-C panic`,
is added and accepts the values `unwind` or `panic`, with the default being
`unwind`. This model affects how code is generated for the local crate, skipping
generation of landing pads with `-C panic=abort`.
[RFC 1513]: https://github.com/rust-lang/rfcs/blob/master/text/1513-less-unwinding.md
Panic implementations are then provided by crates tagged with
`#![panic_runtime]` and lazily required by crates with
`#![needs_panic_runtime]`. The panic strategy (`-C panic` value) of the panic
runtime must match the final product, and if the panic strategy is not `abort`
then the entire DAG must have the same panic strategy.
With the `-C panic=abort` strategy, users can expect a stable method to disable
generation of landing pads, improving optimization in niche scenarios,
decreasing compile time, and decreasing output binary size. With the `-C
panic=unwind` strategy users can expect the existing ability to isolate failure
in Rust code from the outside world.
Organizationally, this commit dismantles the `sys_common::unwind` module in
favor of some bits moving part of it to `libpanic_unwind` and the rest into the
`panicking` module in libstd. The custom panic runtime support is pretty similar
to the custom allocator support with the only major difference being how the
panic runtime is injected (takes the `-C panic` flag into account).
2016-04-09 01:18:40 +02:00
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if target.contains("android") {
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2016-03-08 22:15:58 +01:00
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println!("cargo:rustc-link-lib=dl");
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println!("cargo:rustc-link-lib=log");
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println!("cargo:rustc-link-lib=gcc");
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2017-08-22 23:24:29 +02:00
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} else if !target.contains("musl") {
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2016-01-22 00:21:13 +01:00
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println!("cargo:rustc-link-lib=dl");
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println!("cargo:rustc-link-lib=rt");
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println!("cargo:rustc-link-lib=pthread");
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}
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} else if target.contains("freebsd") {
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println!("cargo:rustc-link-lib=execinfo");
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println!("cargo:rustc-link-lib=pthread");
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2018-09-25 15:03:14 +02:00
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} else if target.contains("netbsd") {
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println!("cargo:rustc-link-lib=pthread");
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println!("cargo:rustc-link-lib=rt");
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2016-01-22 00:21:13 +01:00
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} else if target.contains("dragonfly") || target.contains("bitrig") ||
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2018-09-25 15:03:14 +02:00
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target.contains("openbsd") {
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2016-01-22 00:21:13 +01:00
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println!("cargo:rustc-link-lib=pthread");
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2017-07-07 07:32:18 +02:00
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} else if target.contains("solaris") {
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println!("cargo:rustc-link-lib=socket");
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println!("cargo:rustc-link-lib=posix4");
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println!("cargo:rustc-link-lib=pthread");
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2017-07-25 00:57:57 +02:00
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println!("cargo:rustc-link-lib=resolv");
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2016-01-22 00:21:13 +01:00
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} else if target.contains("apple-darwin") {
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println!("cargo:rustc-link-lib=System");
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2017-04-27 18:58:52 +02:00
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// res_init and friends require -lresolv on macOS/iOS.
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// See #41582 and http://blog.achernya.com/2013/03/os-x-has-silly-libsystem.html
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println!("cargo:rustc-link-lib=resolv");
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2016-01-22 00:21:13 +01:00
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} else if target.contains("apple-ios") {
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println!("cargo:rustc-link-lib=System");
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println!("cargo:rustc-link-lib=objc");
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println!("cargo:rustc-link-lib=framework=Security");
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println!("cargo:rustc-link-lib=framework=Foundation");
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2017-04-27 18:58:52 +02:00
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println!("cargo:rustc-link-lib=resolv");
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2016-01-22 00:21:13 +01:00
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} else if target.contains("windows") {
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println!("cargo:rustc-link-lib=advapi32");
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println!("cargo:rustc-link-lib=ws2_32");
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println!("cargo:rustc-link-lib=userenv");
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2016-10-25 01:42:57 +02:00
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} else if target.contains("fuchsia") {
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2017-09-15 21:38:08 +02:00
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println!("cargo:rustc-link-lib=zircon");
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println!("cargo:rustc-link-lib=fdio");
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2017-12-29 09:33:26 +01:00
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} else if target.contains("cloudabi") {
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if cfg!(feature = "backtrace") {
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println!("cargo:rustc-link-lib=unwind");
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}
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println!("cargo:rustc-link-lib=c");
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println!("cargo:rustc-link-lib=compiler_rt");
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2016-01-22 00:21:13 +01:00
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}
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}
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