Auto merge of #8508 - ehuss:version-bump, r=alexcrichton

Bump to 0.48.0, update changelog

CHANGELOG.md

@@ -1,16 +1,95 @@
 # Changelog
 
-## Cargo 1.46 (2020-08-27)
-[9fcb8c1d...HEAD](https://github.com/rust-lang/cargo/compare/9fcb8c1d...HEAD)
+## Cargo 1.47 (2020-10-08)
+[4f74d9b2...HEAD](https://github.com/rust-lang/cargo/compare/4f74d9b2...HEAD)
 
 ### Added
 
+### Changed
+- The comments added to `.gitignore` when it is modified have been tweaked to
+  add some spacing.
+  [#8476](https://github.com/rust-lang/cargo/pull/8476)
+- `cargo metadata` output should now be sorted to be deterministic.
+  [#8489](https://github.com/rust-lang/cargo/pull/8489)
+- By default, build scripts and proc-macros are now built with `opt-level=0`
+  and the default codegen units, even in release mode.
+  [#8500](https://github.com/rust-lang/cargo/pull/8500)
+
+### Fixed
+- Fixed issue where if a project directory was moved, and one of the
+  build scripts did not use the `rerun-if-changed` directive, then that
+  build script was being rebuilt when it shouldn't.
+  [#8497](https://github.com/rust-lang/cargo/pull/8497)
+
+### Nightly only
+- Added support for `-Z terminal-width` which tells `rustc` the width of the
+  terminal so that it can format diagnostics better.
+  [docs](https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#terminal-width)
+  [#8427](https://github.com/rust-lang/cargo/pull/8427)
+- Added ability to configure `-Z` unstable flags in config files via the
+  `[unstable]` table.
+  [docs](https://doc.rust-lang.org/nightly/cargo/reference/unstable.html)
+  [#8393](https://github.com/rust-lang/cargo/pull/8393)
+- Added [`-Z build-std-features`] flag to set features for the standard library.
+  [#8490](https://github.com/rust-lang/cargo/pull/8490)
+
+## Cargo 1.46 (2020-08-27)
+[9fcb8c1d...rust-1.46.0](https://github.com/rust-lang/cargo/compare/9fcb8c1d...rust-1.46.0)
+
+### Added
+- The `dl` key in `config.json` of a registry index now supports the
+  replacement markers `{prefix}` and `{lowerprefix}` to allow spreading crates
+  across directories similar to how the index itself is structured.
+  [docs](https://doc.rust-lang.org/nightly/cargo/reference/registries.html#index-format)
+  [#8267](https://github.com/rust-lang/cargo/pull/8267)
+- Added new environment variables that are set during compilation:
+  - `CARGO_CRATE_NAME`: The name of the crate being built.
+  - `CARGO_BIN_NAME`: The name of the executable binary (if this is a binary crate).
+  - `CARGO_PKG_LICENSE`: The `license` field from the manifest.
+  - `CARGO_PKG_LICENSE_FILE`: The `license-file` field from the manifest.
+  [#8270](https://github.com/rust-lang/cargo/pull/8270)
+  [#8325](https://github.com/rust-lang/cargo/pull/8325)
+  [#8387](https://github.com/rust-lang/cargo/pull/8387)
+- If the value for `readme` is not specified in `Cargo.toml`, it is now
+  automatically inferred from the existence of a file named `README`,
+  `README.md`, or `README.txt`. This can be suppressed by setting
+  `readme = false`.
+  [#8277](https://github.com/rust-lang/cargo/pull/8277)
+- `cargo install` now supports the `--index` flag to install directly from an index.
+  [#8344](https://github.com/rust-lang/cargo/pull/8344)
+- Added the `metadata` table to the `workspace` definition in `Cargo.toml`.
+  This can be used for arbitrary data similar to the `package.metadata` table.
+  [#8323](https://github.com/rust-lang/cargo/pull/8323)
+- Added the `--target-dir` flag to `cargo install` to set the target directory.
+  [#8391](https://github.com/rust-lang/cargo/pull/8391)
+- Changes to environment variables used by the
+  [`env!`](https://doc.rust-lang.org/std/macro.env.html) or
+  [`option_env!`](https://doc.rust-lang.org/std/macro.option_env.html) macros
+  are now automatically detected to trigger a rebuild.
+  [#8421](https://github.com/rust-lang/cargo/pull/8421)
+- The `target` directory now includes the `CACHEDIR.TAG` file which is used by
+  some tools to exclude the directory from backups.
+  [#8378](https://github.com/rust-lang/cargo/pull/8378)
+- Added docs about rustup's `+toolchain` syntax.
+  [#8455](https://github.com/rust-lang/cargo/pull/8455)
+
 ### Changed
 - A warning is now displayed if a git dependency includes a `#` fragment in
   the URL. This was potentially confusing because Cargo itself displays git
   URLs with this syntax, but it does not have any meaning outside of the
   `Cargo.lock` file, and would not work properly.
   [#8297](https://github.com/rust-lang/cargo/pull/8297)
+- Various optimizations and fixes for bitcode embedding and LTO.
+  [#8349](https://github.com/rust-lang/cargo/pull/8349)
+- Reduced the amount of data fetched for git dependencies. If Cargo knows the
+  branch or tag to fetch, it will now only fetch that branch or tag instead of
+  all branches and tags.
+  [#8363](https://github.com/rust-lang/cargo/pull/8363)
+- Enhanced git fetch error messages.
+  [#8409](https://github.com/rust-lang/cargo/pull/8409)
+- `.crate` files are now generated with GNU tar format instead of UStar, which
+  supports longer file names.
+  [#8453](https://github.com/rust-lang/cargo/pull/8453)
 
 ### Fixed
 - Fixed a rare situation where an update to `Cargo.lock` failed once, but then
@@ -22,6 +101,27 @@
 - Updated libgit2, which brings in a fix for zlib errors for some remote
   git servers like googlesource.com.
   [#8320](https://github.com/rust-lang/cargo/pull/8320)
+- Fixed the GitHub fast-path check for up-to-date git dependencies on
+  non-master branches.
+  [#8363](https://github.com/rust-lang/cargo/pull/8363)
+- Fixed issue when enabling a feature with `pkg/feature` syntax, and `pkg` is
+  an optional dependency, but also a dev-dependency, and the dev-dependency
+  appears before the optional normal dependency in the registry summary, then
+  the optional dependency would not get activated.
+  [#8395](https://github.com/rust-lang/cargo/pull/8395)
+- Fixed `clean -p` deleting the build directory if there is a test named
+  `build`.
+  [#8398](https://github.com/rust-lang/cargo/pull/8398)
+- Fixed indentation of multi-line Cargo error messages.
+  [#8409](https://github.com/rust-lang/cargo/pull/8409)
+- Fixed issue where the automatic inclusion of the `--document-private-items`
+  flag for rustdoc would override any flags passed to the `cargo rustdoc`
+  command.
+  [#8449](https://github.com/rust-lang/cargo/pull/8449)
+- Cargo will now include a version in the hash of the fingerprint directories
+  to support backwards-incompatible changes to the fingerprint structure.
+  [#8473](https://github.com/rust-lang/cargo/pull/8473)
+  [#8488](https://github.com/rust-lang/cargo/pull/8488)
 
 ### Nightly only
 - Added `-Zrustdoc-map` feature which provides external mappings for rustdoc
@@ -31,7 +131,10 @@
 - Fixed feature calculation when a proc-macro is declared in `Cargo.toml` with
   an underscore (like `proc_macro = true`).
   [#8319](https://github.com/rust-lang/cargo/pull/8319)
-
+- Added support for setting `-Clinker` with `-Zdoctest-xcompile`.
+  [#8359](https://github.com/rust-lang/cargo/pull/8359)
+- Fixed setting the `strip` profile field in config files.
+  [#8454](https://github.com/rust-lang/cargo/pull/8454)
 
 ## Cargo 1.45 (2020-07-16)
 [ebda5065e...rust-1.45.0](https://github.com/rust-lang/cargo/compare/ebda5065...rust-1.45.0)

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "cargo"
-version = "0.47.0"
+version = "0.48.0"
 edition = "2018"
 authors = ["Yehuda Katz <wycats@gmail.com>",
            "Carl Lerche <me@carllerche.com>",

src/cargo/core/compiler/build_context/target_info.rs

@@ -40,8 +40,6 @@ pub struct TargetInfo {
     pub rustflags: Vec<String>,
     /// Extra flags to pass to `rustdoc`, see `env_args`.
     pub rustdocflags: Vec<String>,
-    /// Remove this when it hits stable (1.45)
-    pub supports_embed_bitcode: Option<bool>,
 }
 
 /// Kind of each file generated by a Unit, part of `FileType`.
@@ -143,13 +141,6 @@ impl TargetInfo {
             .args(&rustflags)
             .env_remove("RUSTC_LOG");
 
-        let mut embed_bitcode_test = process.clone();
-        embed_bitcode_test.arg("-Cembed-bitcode");
-        let supports_embed_bitcode = match kind {
-            CompileKind::Host => Some(rustc.cached_output(&embed_bitcode_test).is_ok()),
-            _ => None,
-        };
-
         if let CompileKind::Target(target) = kind {
             process.arg("--target").arg(target.rustc_target());
         }
@@ -240,7 +231,6 @@ impl TargetInfo {
                 "RUSTDOCFLAGS",
             )?,
             cfg,
-            supports_embed_bitcode,
         })
     }
 

src/cargo/core/compiler/mod.rs

@@ -817,31 +817,10 @@ fn build_base_args(
         }
         lto::Lto::ObjectAndBitcode => {} // this is rustc's default
         lto::Lto::OnlyBitcode => {
-            // Note that this compiler flag, like the one below, is just an
-            // optimization in terms of build time. If we don't pass it then
-            // both object code and bitcode will show up. This is lagely just
-            // compat until the feature lands on stable and we can remove the
-            // conditional branch.
-            if cx
-                .bcx
-                .target_data
-                .info(CompileKind::Host)
-                .supports_embed_bitcode
-                .unwrap()
-            {
-                cmd.arg("-Clinker-plugin-lto");
-            }
+            cmd.arg("-Clinker-plugin-lto");
         }
         lto::Lto::OnlyObject => {
-            if cx
-                .bcx
-                .target_data
-                .info(CompileKind::Host)
-                .supports_embed_bitcode
-                .unwrap()
-            {
-                cmd.arg("-Cembed-bitcode=no");
-            }
+            cmd.arg("-Cembed-bitcode=no");
         }
     }
 

tests/testsuite/lto.rs

@@ -5,10 +5,6 @@ use std::process::Output;
 
 #[cargo_test]
 fn with_deps() {
-    if !cargo_test_support::is_nightly() {
-        return;
-    }
-
     Package::new("bar", "0.0.1").publish();
 
     let p = project()
@@ -36,10 +32,6 @@ fn with_deps() {
 
 #[cargo_test]
 fn shared_deps() {
-    if !cargo_test_support::is_nightly() {
-        return;
-    }
-
     Package::new("bar", "0.0.1").publish();
 
     let p = project()
@@ -70,10 +62,6 @@ fn shared_deps() {
 
 #[cargo_test]
 fn build_dep_not_ltod() {
-    if !cargo_test_support::is_nightly() {
-        return;
-    }
-
     Package::new("bar", "0.0.1").publish();
 
     let p = project()
@@ -102,10 +90,6 @@ fn build_dep_not_ltod() {
 
 #[cargo_test]
 fn complicated() {
-    if !cargo_test_support::is_nightly() {
-        return;
-    }
-
     Package::new("dep-shared", "0.0.1")
         .file("src/lib.rs", "pub fn foo() {}")
         .publish();
@@ -233,10 +217,6 @@ fn complicated() {
 
 #[cargo_test]
 fn off_in_manifest_works() {
-    if !cargo_test_support::is_nightly() {
-        return;
-    }
-
     Package::new("bar", "0.0.1")
         .file("src/lib.rs", "pub fn foo() {}")
         .publish();
@@ -284,10 +264,6 @@ fn off_in_manifest_works() {
 
 #[cargo_test]
 fn between_builds() {
-    if !cargo_test_support::is_nightly() {
-        return;
-    }
-
     let p = project()
         .file(
             "Cargo.toml",
@@ -325,10 +301,6 @@ fn between_builds() {
 
 #[cargo_test]
 fn test_all() {
-    if !cargo_test_support::is_nightly() {
-        return;
-    }
-
     let p = project()
         .file(
             "Cargo.toml",
@@ -352,10 +324,6 @@ fn test_all() {
 
 #[cargo_test]
 fn test_all_and_bench() {
-    if !cargo_test_support::is_nightly() {
-        return;
-    }
-
     let p = project()
         .file(
             "Cargo.toml",
@@ -495,9 +463,6 @@ fn verify_lto(output: &Output, krate: &str, krate_info: &str, expected_lto: Lto)
 
 #[cargo_test]
 fn cdylib_and_rlib() {
-    if !cargo_test_support::is_nightly() {
-        return;
-    }
     let p = project_with_dep("'cdylib', 'rlib'");
     let output = p.cargo("build --release -v").exec_with_output().unwrap();
     verify_lto(
@@ -564,9 +529,6 @@ fn cdylib_and_rlib() {
 
 #[cargo_test]
 fn dylib() {
-    if !cargo_test_support::is_nightly() {
-        return;
-    }
     let p = project_with_dep("'dylib'");
     let output = p.cargo("build --release -v").exec_with_output().unwrap();
     verify_lto(&output, "registry", "--crate-type lib", Lto::OnlyObject);
@@ -623,9 +585,6 @@ fn dylib() {
 
 #[cargo_test]
 fn test_profile() {
-    if !cargo_test_support::is_nightly() {
-        return;
-    }
     Package::new("bar", "0.0.1")
         .file("src/lib.rs", "pub fn foo() -> i32 { 123 } ")
         .publish();
@@ -677,9 +636,6 @@ fn test_profile() {
 
 #[cargo_test]
 fn dev_profile() {
-    if !cargo_test_support::is_nightly() {
-        return;
-    }
     // Mixing dev=LTO with test=not-LTO
     Package::new("bar", "0.0.1")
         .file("src/lib.rs", "pub fn foo() -> i32 { 123 } ")

tests/testsuite/rustc_info_cache.rs

@@ -6,12 +6,6 @@ use std::env;
 
 #[cargo_test]
 fn rustc_info_cache() {
-    // Needs `-Cbitcode-in-rlib` to ride to stable before this can be enabled
-    // everywhere.
-    if !cargo_test_support::is_nightly() {
-        return;
-    }
-
     let p = project()
         .file("src/main.rs", r#"fn main() { println!("hello"); }"#)
         .build();