Unrolled build for rust-lang#129876

Rollup merge of rust-lang#129876 - nnethercote:more-sysroot-rustc_codegen_gcc, r=Mark-Simulacrum

Use sysroot crates maximally in `rustc_codegen_gcc`.

This shrinks `compiler/rustc_codegen_gcc/Cargo.lock` quite a bit. The only remaining dependencies in `compiler/rustc_codegen_gcc/Cargo.lock` are `gccjit`, `lang_tester`, and `boml`, all of which aren't used in any other compiler crates.

The commit also reorders and adds comments to the `extern crate` items so they match those in miri.

r? ```@Mark-Simulacrum```

Author: rust-timer

compiler/rustc_codegen_gcc/Cargo.lock

@@ -11,63 +11,12 @@ dependencies = [
  "memchr",
 ]
 
-[[package]]
-name = "bitflags"
-version = "1.3.2"
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-
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-
 [[package]]
 name = "boml"
 version = "0.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "85fdb93f04c73bff54305fa437ffea5449c41edcaadfe882f35836206b166ac5"
 
-[[package]]
-name = "cc"
-version = "1.0.79"
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-
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-version = "1.0.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
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-
-[[package]]
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-version = "0.3.1"
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-checksum = "4bcfec3a70f97c962c307b2d2c56e358cf1d00b558d74262b5f929ee8cc7e73a"
-dependencies = [
- "errno-dragonfly",
- "libc",
- "windows-sys",
-]
-
-[[package]]
-name = "errno-dragonfly"
-version = "0.1.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "aa68f1b12764fab894d2755d2518754e71b4fd80ecfb822714a1206c2aab39bf"
-dependencies = [
- "cc",
- "libc",
-]
-
-[[package]]
-name = "fastrand"
-version = "2.0.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6999dc1837253364c2ebb0704ba97994bd874e8f195d665c50b7548f6ea92764"
-
 [[package]]
 name = "fm"
 version = "0.2.2"
@@ -132,12 +81,6 @@ version = "0.2.150"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "89d92a4743f9a61002fae18374ed11e7973f530cb3a3255fb354818118b2203c"
 
-[[package]]
-name = "linux-raw-sys"
-version = "0.4.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "57bcfdad1b858c2db7c38303a6d2ad4dfaf5eb53dfeb0910128b2c26d6158503"
-
 [[package]]
 name = "memchr"
 version = "2.5.0"
@@ -154,24 +97,6 @@ dependencies = [
  "libc",
 ]
 
-[[package]]
-name = "object"
-version = "0.30.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "03b4680b86d9cfafba8fc491dc9b6df26b68cf40e9e6cd73909194759a63c385"
-dependencies = [
- "memchr",
-]
-
-[[package]]
-name = "redox_syscall"
-version = "0.3.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "567664f262709473930a4bf9e51bf2ebf3348f2e748ccc50dea20646858f8f29"
-dependencies = [
- "bitflags 1.3.2",
-]
-
 [[package]]
 name = "regex"
 version = "1.8.4"
@@ -196,22 +121,6 @@ dependencies = [
  "boml",
  "gccjit",
  "lang_tester",
- "object",
- "smallvec",
- "tempfile",
-]
-
-[[package]]
-name = "rustix"
-version = "0.38.8"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "19ed4fa021d81c8392ce04db050a3da9a60299050b7ae1cf482d862b54a7218f"
-dependencies = [
- "bitflags 2.4.0",
- "errno",
- "libc",
- "linux-raw-sys",
- "windows-sys",
 ]
 
 [[package]]
@@ -223,25 +132,6 @@ dependencies = [
  "winapi-util",
 ]
 
-[[package]]
-name = "smallvec"
-version = "1.10.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a507befe795404456341dfab10cef66ead4c041f62b8b11bbb92bffe5d0953e0"
-
-[[package]]
-name = "tempfile"
-version = "3.7.1"
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-checksum = "dc02fddf48964c42031a0b3fe0428320ecf3a73c401040fc0096f97794310651"
-dependencies = [
- "cfg-if",
- "fastrand",
- "redox_syscall",
- "rustix",
- "windows-sys",
-]
-
 [[package]]
 name = "termcolor"
 version = "1.2.0"
@@ -315,69 +205,3 @@ name = "winapi-x86_64-pc-windows-gnu"
 version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
-
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-name = "windows-sys"
-version = "0.48.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "677d2418bec65e3338edb076e806bc1ec15693c5d0104683f2efe857f61056a9"
-dependencies = [
- "windows-targets",
-]
-
-[[package]]
-name = "windows-targets"
-version = "0.48.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "05d4b17490f70499f20b9e791dcf6a299785ce8af4d709018206dc5b4953e95f"
-dependencies = [
- "windows_aarch64_gnullvm",
- "windows_aarch64_msvc",
- "windows_i686_gnu",
- "windows_i686_msvc",
- "windows_x86_64_gnu",
- "windows_x86_64_gnullvm",
- "windows_x86_64_msvc",
-]
-
-[[package]]
-name = "windows_aarch64_gnullvm"
-version = "0.48.0"
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-
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-
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compiler/rustc_codegen_gcc/Cargo.toml

@@ -23,21 +23,11 @@ default = ["master"]
 
 [dependencies]
 gccjit = "2.1"
-
 # Local copy.
 #gccjit = { path = "../gccjit.rs" }
 
-object = { version = "0.30.1", default-features = false, features = [
-    "std",
-    "read",
-] }
-smallvec = { version = "1.6.1", features = ["union", "may_dangle"] }
-# TODO(antoyo): make tempfile optional.
-tempfile = "3.7.1"
-
 [dev-dependencies]
 lang_tester = "0.8.0"
-tempfile = "3.1.0"
 boml = "0.3.1"
 
 [profile.dev]

compiler/rustc_codegen_gcc/src/lib.rs

@@ -24,6 +24,14 @@
 #![deny(clippy::pattern_type_mismatch)]
 #![allow(clippy::needless_lifetimes)]
 
+// Some "regular" crates we want to share with rustc
+extern crate object;
+extern crate smallvec;
+extern crate tempfile;
+#[macro_use]
+extern crate tracing;
+
+// The rustc crates we need
 extern crate rustc_apfloat;
 extern crate rustc_ast;
 extern crate rustc_attr;
@@ -42,8 +50,6 @@ extern crate rustc_middle;
 extern crate rustc_session;
 extern crate rustc_span;
 extern crate rustc_target;
-#[macro_use]
-extern crate tracing;
 
 // This prevents duplicating functions and statics that are already part of the host rustc process.
 #[allow(unused_extern_crates)]