Merging upstream version 1.71.1+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

7 files changed, 451 insertions, 0 deletions

diff --git a/vendor/link-cplusplus/.cargo-checksum.json b/vendor/link-cplusplus/.cargo-checksum.json
new file mode 100644
index 000000000..df51634ef
--- /dev/null
+++ b/vendor/link-cplusplus/.cargo-checksum.json
@@ -0,0 +1 @@
+{"files":{"Cargo.toml":"7438c776066def5b8e11509c23054bacbdc032fcc107298acefa30c2333ecabb","LICENSE-APACHE":"a60eea817514531668d7e00765731449fe14d059d3249e0bc93b36de45f759f2","LICENSE-MIT":"23f18e03dc49df91622fe2a76176497404e46ced8a715d9d2b67a7446571cca3","README.md":"36d250081a7e761f54040a793bda9e77428d30f64ed55d6881aed07946ce9859","build.rs":"fde8d74a3a28071cb063c104aacb3c0157261641adcd4975eb0ef9d58ec552b1","src/lib.rs":"efd02a72c3937172ed3cf8eb3c1ab31bb25dc0e32e3b24cfececea5320d4d7c3"},"package":"ecd207c9c713c34f95a097a5b029ac2ce6010530c7b49d7fea24d977dede04f5"}
\ No newline at end of file
diff --git a/vendor/link-cplusplus/Cargo.toml b/vendor/link-cplusplus/Cargo.toml
new file mode 100644
index 000000000..84c8c3886
--- /dev/null
+++ b/vendor/link-cplusplus/Cargo.toml
@@ -0,0 +1,47 @@
+# THIS FILE IS AUTOMATICALLY GENERATED BY CARGO
+#
+# When uploading crates to the registry Cargo will automatically
+# "normalize" Cargo.toml files for maximal compatibility
+# with all versions of Cargo and also rewrite `path` dependencies
+# to registry (e.g., crates.io) dependencies.
+#
+# If you are reading this file be aware that the original Cargo.toml
+# will likely look very different (and much more reasonable).
+# See Cargo.toml.orig for the original contents.
+
+[package]
+edition = "2018"
+rust-version = "1.34"
+name = "link-cplusplus"
+version = "1.0.8"
+authors = ["David Tolnay <dtolnay@gmail.com>"]
+links = "cplusplus"
+description = "Link libstdc++ or libc++ automatically or manually"
+documentation = "https://docs.rs/link-cplusplus"
+readme = "README.md"
+keywords = [
+    "linkage",
+    "c++",
+]
+categories = [
+    "external-ffi-bindings",
+    "development-tools::ffi",
+    "compilers",
+    "no-std",
+]
+license = "MIT OR Apache-2.0"
+repository = "https://github.com/dtolnay/link-cplusplus"
+
+[package.metadata.docs.rs]
+targets = ["x86_64-unknown-linux-gnu"]
+
+[build-dependencies.cc]
+version = "1.0"
+
+[features]
+default = []
+"libc++" = []
+libcxx = ["libc++"]
+"libstdc++" = []
+libstdcxx = ["libstdc++"]
+nothing = []
diff --git a/vendor/link-cplusplus/LICENSE-APACHE b/vendor/link-cplusplus/LICENSE-APACHE
new file mode 100644
index 000000000..16fe87b06
--- /dev/null
+++ b/vendor/link-cplusplus/LICENSE-APACHE
@@ -0,0 +1,201 @@
+                              Apache License
+                        Version 2.0, January 2004
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+
+TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
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+1. Definitions.
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diff --git a/vendor/link-cplusplus/LICENSE-MIT b/vendor/link-cplusplus/LICENSE-MIT
new file mode 100644
index 000000000..31aa79387
--- /dev/null
+++ b/vendor/link-cplusplus/LICENSE-MIT
@@ -0,0 +1,23 @@
+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/vendor/link-cplusplus/README.md b/vendor/link-cplusplus/README.md
new file mode 100644
index 000000000..7743b4f3b
--- /dev/null
+++ b/vendor/link-cplusplus/README.md
@@ -0,0 +1,79 @@
+`-lstdc++` or `-lc++`
+=====================
+
+[<img alt="github" src="https://img.shields.io/badge/github-dtolnay/link--cplusplus-8da0cb?style=for-the-badge&labelColor=555555&logo=github" height="20">](https://github.com/dtolnay/link-cplusplus)
+[<img alt="crates.io" src="https://img.shields.io/crates/v/link-cplusplus.svg?style=for-the-badge&color=fc8d62&logo=rust" height="20">](https://crates.io/crates/link-cplusplus)
+[<img alt="docs.rs" src="https://img.shields.io/badge/docs.rs-link--cplusplus-66c2a5?style=for-the-badge&labelColor=555555&logo=docs.rs" height="20">](https://docs.rs/link-cplusplus)
+[<img alt="build status" src="https://img.shields.io/github/actions/workflow/status/dtolnay/link-cplusplus/ci.yml?branch=master&style=for-the-badge" height="20">](https://github.com/dtolnay/link-cplusplus/actions?query=branch%3Amaster)
+
+This crate exists for the purpose of passing `-lstdc++` or `-lc++` to the
+linker, while making it possible for an application to make that choice on
+behalf of its library dependencies.
+
+Without this crate, a library would need to:
+
+- pick one or the other to link, with no way for downstream applications to
+  override the choice;
+- or link neither and require an explicit link flag provided by downstream
+  applications even if they would be fine with a default choice;
+
+neither of which are good experiences.
+
+<br>
+
+## Options
+
+An application or library that is fine with either of libstdc++ or libc++ being
+linked, whichever is the platform's default, should use the following in
+Cargo.toml:
+
+```toml
+[dependencies]
+link-cplusplus = "1.0"
+```
+
+An application that wants a particular one or the other linked should use:
+
+```toml
+[dependencies]
+link-cplusplus = { version = "1.0", features = ["libstdc++"] }
+
+# or
+
+link-cplusplus = { version = "1.0", features = ["libc++"] }
+```
+
+An application that wants to handle its own more complicated logic for link
+flags from its build script can make this crate do nothing by using:
+
+```toml
+[dependencies]
+link-cplusplus = { version = "1.0", features = ["nothing"] }
+```
+
+Lastly, make sure to add an explicit `extern crate` dependency to your crate
+root, since the link-cplusplus crate will be otherwise unused and its link flags
+dropped.
+
+```rust
+// src/lib.rs
+
+extern crate link_cplusplus;
+```
+
+<br>
+
+#### License
+
+<sup>
+Licensed under either of <a href="LICENSE-APACHE">Apache License, Version
+2.0</a> or <a href="LICENSE-MIT">MIT license</a> at your option.
+</sup>
+
+<br>
+
+<sub>
+Unless you explicitly state otherwise, any contribution intentionally submitted
+for inclusion in this project by you, as defined in the Apache-2.0 license,
+shall be dual licensed as above, without any additional terms or conditions.
+</sub>
diff --git a/vendor/link-cplusplus/build.rs b/vendor/link-cplusplus/build.rs
new file mode 100644
index 000000000..1f679229e
--- /dev/null
+++ b/vendor/link-cplusplus/build.rs
@@ -0,0 +1,34 @@
+use std::env;
+use std::fs;
+use std::path::PathBuf;
+
+fn main() {
+    println!("cargo:rerun-if-changed=build.rs");
+
+    let libstdcxx = cfg!(feature = "libstdc++");
+    let libcxx = cfg!(feature = "libc++");
+    let nothing = cfg!(feature = "nothing");
+
+    if nothing {
+        return;
+    }
+
+    if libstdcxx && libcxx {
+        println!(
+            "cargo:warning=-lstdc++ and -lc++ are both requested, \
+             using the platform's default"
+        );
+    }
+
+    match (libstdcxx, libcxx) {
+        (true, false) => println!("cargo:rustc-link-lib=stdc++"),
+        (false, true) => println!("cargo:rustc-link-lib=c++"),
+        (false, false) | (true, true) => {
+            // The platform's default.
+            let out_dir = env::var_os("OUT_DIR").expect("missing OUT_DIR");
+            let path = PathBuf::from(out_dir).join("dummy.cc");
+            fs::write(&path, "int rust_link_cplusplus;\n").unwrap();
+            cc::Build::new().cpp(true).file(&path).compile("link-cplusplus");
+        }
+    }
+}
diff --git a/vendor/link-cplusplus/src/lib.rs b/vendor/link-cplusplus/src/lib.rs
new file mode 100644
index 000000000..7864d5974
--- /dev/null
+++ b/vendor/link-cplusplus/src/lib.rs
@@ -0,0 +1,66 @@
+//! [![github]](https://github.com/dtolnay/link-cplusplus)&ensp;[![crates-io]](https://crates.io/crates/link-cplusplus)&ensp;[![docs-rs]](https://docs.rs/link-cplusplus)
+//!
+//! [github]: https://img.shields.io/badge/github-8da0cb?style=for-the-badge&labelColor=555555&logo=github
+//! [crates-io]: https://img.shields.io/badge/crates.io-fc8d62?style=for-the-badge&labelColor=555555&logo=rust
+//! [docs-rs]: https://img.shields.io/badge/docs.rs-66c2a5?style=for-the-badge&labelColor=555555&logo=docs.rs
+//!
+//! <br>
+//!
+//! # `-lstdc++` or `-lc++`
+//!
+//! This crate exists for the purpose of passing `-lstdc++` or `-lc++` to the
+//! linker, while making it possible for an application to make that choice on
+//! behalf of its library dependencies.
+//!
+//! Without this crate, a library would need to:
+//!
+//! - pick one or the other to link, with no way for downstream applications to
+//!   override the choice;
+//! - or link neither and require an explicit link flag provided by downstream
+//!   applications even if they would be fine with a default choice;
+//!
+//! neither of which are good experiences.
+//!
+//! <br>
+//!
+//! # Options
+//!
+//! An application or library that is fine with either of libstdc++ or libc++
+//! being linked, whichever is the platform's default, should use the following
+//! in Cargo.toml:
+//!
+//! ```toml
+//! [dependencies]
+//! link-cplusplus = "1.0"
+//! ```
+//!
+//! An application that wants a particular one or the other linked should use:
+//!
+//! ```toml
+//! [dependencies]
+//! link-cplusplus = { version = "1.0", features = ["libstdc++"] }
+//!
+//! # or
+//!
+//! link-cplusplus = { version = "1.0", features = ["libc++"] }
+//! ```
+//!
+//! An application that wants to handle its own more complicated logic for link
+//! flags from its build script can make this crate do nothing by using:
+//!
+//! ```toml
+//! [dependencies]
+//! link-cplusplus = { version = "1.0", features = ["nothing"] }
+//! ```
+//!
+//! Lastly, make sure to add an explicit `extern crate` dependency to your crate
+//! root, since the link-cplusplus crate will be otherwise unused and its link
+//! flags dropped.
+//!
+//! ```
+//! // src/lib.rs
+//!
+//! extern crate link_cplusplus;
+//! ```
+
+#![no_std]