rustc: Remove dylib crate type from most rustc crates

Now that procedural macros no longer link transitively to libsyntax,
this shouldn't be needed any more! This commit is an experiment in
removing all dynamic libraries from rustc except for librustc_driver
itself. Let's see how far we can get with that!

Author: alexcrichton

src/bootstrap/lib.rs

@@ -1125,8 +1125,6 @@ impl Build {
     /// `rust.save-toolstates` in `config.toml`. If unspecified, nothing will be
     /// done. The file is updated immediately after this function completes.
     pub fn save_toolstate(&self, tool: &str, state: ToolState) {
-        use std::io::{Seek, SeekFrom};
-
         if let Some(ref path) = self.config.save_toolstates {
             let mut file = t!(fs::OpenOptions::new()
                 .create(true)

src/libarena/Cargo.toml

@@ -7,7 +7,6 @@ edition = "2018"
 [lib]
 name = "arena"
 path = "lib.rs"
-crate-type = ["dylib"]
 
 [dependencies]
 rustc_data_structures = { path = "../librustc_data_structures" }

src/libfmt_macros/Cargo.toml

@@ -7,4 +7,3 @@ edition = "2018"
 [lib]
 name = "fmt_macros"
 path = "lib.rs"
-crate-type = ["dylib"]

src/libgraphviz/Cargo.toml

@@ -7,4 +7,3 @@ edition = "2018"
 [lib]
 name = "graphviz"
 path = "lib.rs"
-crate-type = ["dylib"]

src/librustc/Cargo.toml

@@ -7,7 +7,7 @@ edition = "2018"
 [lib]
 name = "rustc"
 path = "lib.rs"
-crate-type = ["dylib"]
+doctest = false
 
 [dependencies]
 arena = { path = "../libarena" }

src/librustc/lib.rs

@@ -43,7 +43,6 @@
 #![feature(extern_types)]
 #![feature(nll)]
 #![feature(non_exhaustive)]
-#![feature(proc_macro_internals)]
 #![feature(optin_builtin_traits)]
 #![feature(range_is_empty)]
 #![feature(rustc_diagnostic_macros)]

src/librustc_allocator/Cargo.toml

@@ -6,7 +6,6 @@ edition = "2018"
 
 [lib]
 path = "lib.rs"
-crate-type = ["dylib"]
 test = false
 
 [dependencies]

src/librustc_apfloat/Cargo.toml

@@ -10,5 +10,4 @@ path = "lib.rs"
 
 [dependencies]
 bitflags = "1.0"
-rustc_cratesio_shim = { path = "../librustc_cratesio_shim" }
 smallvec = { version = "0.6.7", features = ["union", "may_dangle"] }

src/librustc_apfloat/lib.rs

@@ -35,9 +35,6 @@
 #![deny(rust_2018_idioms)]
 
 #![feature(nll)]
-// See librustc_cratesio_shim/Cargo.toml for a comment explaining this.
-#[allow(unused_extern_crates)]
-extern crate rustc_cratesio_shim;
 
 use std::cmp::Ordering;
 use std::fmt;

src/librustc_borrowck/Cargo.toml

@@ -7,8 +7,8 @@ edition = "2018"
 [lib]
 name = "rustc_borrowck"
 path = "lib.rs"
-crate-type = ["dylib"]
 test = false
+doctest = false
 
 [dependencies]
 log = "0.4"

src/librustc_codegen_llvm/lib.rs

@@ -39,6 +39,7 @@ extern crate rustc_incremental;
 extern crate rustc_codegen_utils;
 extern crate rustc_codegen_ssa;
 extern crate rustc_fs_util;
+extern crate rustc_driver as _;
 
 #[macro_use] extern crate log;
 #[macro_use] extern crate syntax;

src/librustc_codegen_ssa/Cargo.toml

@@ -7,7 +7,6 @@ edition = "2018"
 [lib]
 name = "rustc_codegen_ssa"
 path = "lib.rs"
-crate-type = ["dylib"]
 test = false
 
 [dependencies]

src/librustc_codegen_utils/Cargo.toml

@@ -7,7 +7,6 @@ edition = "2018"
 [lib]
 name = "rustc_codegen_utils"
 path = "lib.rs"
-crate-type = ["dylib"]
 test = false
 
 [dependencies]

src/librustc_cratesio_shim/Cargo.toml

@@ -7,14 +7,13 @@ edition = "2018"
 [lib]
 name = "rustc_data_structures"
 path = "lib.rs"
-crate-type = ["dylib"]
+doctest = false
 
 [dependencies]
 ena = "0.13"
 log = "0.4"
 jobserver_crate = { version = "0.1", package = "jobserver" }
 lazy_static = "1"
-rustc_cratesio_shim = { path = "../librustc_cratesio_shim" }
 serialize = { path = "../libserialize" }
 graphviz = { path = "../libgraphviz" }
 cfg-if = "0.1.2"

src/librustc_cratesio_shim/src/lib.rs

@@ -37,10 +37,6 @@ extern crate libc;
 #[macro_use]
 extern crate cfg_if;
 
-// See librustc_cratesio_shim/Cargo.toml for a comment explaining this.
-#[allow(unused_extern_crates)]
-extern crate rustc_cratesio_shim;
-
 pub use rustc_serialize::hex::ToHex;
 
 #[inline(never)]

src/librustc_data_structures/Cargo.toml

@@ -7,14 +7,13 @@ edition = "2018"
 [lib]
 name = "rustc_errors"
 path = "lib.rs"
-crate-type = ["dylib"]
+doctest = false
 
 [dependencies]
 log = "0.4"
 serialize = { path = "../libserialize" }
 syntax_pos = { path = "../libsyntax_pos" }
 rustc_data_structures = { path = "../librustc_data_structures" }
-rustc_cratesio_shim = { path = "../librustc_cratesio_shim" }
 unicode-width = "0.1.4"
 atty = "0.2"
 termcolor = "1.0"

src/librustc_data_structures/lib.rs

@@ -7,6 +7,5 @@ edition = "2018"
 [lib]
 name = "rustc_fs_util"
 path = "lib.rs"
-crate-type = ["dylib"]
 
 [dependencies]

src/librustc_errors/Cargo.toml

@@ -7,7 +7,7 @@ edition = "2018"
 [lib]
 name = "rustc_incremental"
 path = "lib.rs"
-crate-type = ["dylib"]
+doctest = false
 
 [dependencies]
 graphviz = { path = "../libgraphviz" }

src/librustc_fs_util/Cargo.toml

@@ -7,7 +7,7 @@ edition = "2018"
 [lib]
 name = "rustc_interface"
 path = "lib.rs"
-crate-type = ["dylib"]
+doctest = false
 
 [dependencies]
 log = "0.4"

src/librustc_incremental/Cargo.toml

@@ -7,7 +7,6 @@ edition = "2018"
 [lib]
 name = "rustc_lint"
 path = "lib.rs"
-crate-type = ["dylib"]
 
 [dependencies]
 log = "0.4"

src/librustc_interface/Cargo.toml

@@ -4,10 +4,6 @@
 
 #![doc(html_root_url = "https://doc.rust-lang.org/nightly/")]
 
-// See librustc_cratesio_shim/Cargo.toml for a comment explaining this.
-#[allow(unused_extern_crates)]
-extern crate rustc_cratesio_shim;
-
 // NOTE: This crate only exists to allow linking on mingw targets.
 
 /// Initialize targets enabled by the build script via `cfg(llvm_component = "...")`.

src/librustc_lint/Cargo.toml

@@ -7,7 +7,7 @@ edition = "2018"
 [lib]
 name = "rustc_metadata"
 path = "lib.rs"
-crate-type = ["dylib"]
+doctest = false
 
 [dependencies]
 flate2 = "1.0"

src/librustc_llvm/lib.rs

@@ -7,7 +7,7 @@ edition = "2018"
 [lib]
 name = "rustc_mir"
 path = "lib.rs"
-crate-type = ["dylib"]
+doctest = false
 
 [dependencies]
 arena = { path = "../libarena" }

src/librustc_metadata/Cargo.toml

@@ -7,7 +7,6 @@ edition = "2018"
 [lib]
 name = "rustc_passes"
 path = "lib.rs"
-crate-type = ["dylib"]
 
 [dependencies]
 log = "0.4"

src/librustc_mir/Cargo.toml

@@ -8,7 +8,7 @@ edition = "2018"
 [lib]
 name = "rustc_plugin"
 path = "lib.rs"
-crate-type = ["dylib"]
+doctest = false
 
 [dependencies]
 rustc = { path = "../librustc" }

src/librustc_passes/Cargo.toml

@@ -7,7 +7,6 @@ edition = "2018"
 [lib]
 name = "rustc_privacy"
 path = "lib.rs"
-crate-type = ["dylib"]
 
 [dependencies]
 rustc = { path = "../librustc" }

src/librustc_plugin/Cargo.toml

@@ -7,8 +7,8 @@ edition = "2018"
 [lib]
 name = "rustc_resolve"
 path = "lib.rs"
-crate-type = ["dylib"]
 test = false
+doctest = false
 
 [dependencies]
 bitflags = "1.0"

src/librustc_privacy/Cargo.toml

@@ -7,7 +7,6 @@ edition = "2018"
 [lib]
 name = "rustc_save_analysis"
 path = "lib.rs"
-crate-type = ["dylib"]
 
 [dependencies]
 log = "0.4"

src/librustc_resolve/Cargo.toml

@@ -7,11 +7,9 @@ edition = "2018"
 [lib]
 name = "rustc_target"
 path = "lib.rs"
-crate-type = ["dylib"]
 
 [dependencies]
 bitflags = "1.0"
 log = "0.4"
-rustc_cratesio_shim = { path = "../librustc_cratesio_shim" }
 rustc_data_structures = { path = "../librustc_data_structures" }
 serialize = { path = "../libserialize" }

src/librustc_save_analysis/Cargo.toml

@@ -23,10 +23,6 @@
 #[allow(unused_extern_crates)]
 extern crate serialize as rustc_serialize; // used by deriving
 
-// See librustc_cratesio_shim/Cargo.toml for a comment explaining this.
-#[allow(unused_extern_crates)]
-extern crate rustc_cratesio_shim;
-
 #[macro_use]
 extern crate rustc_data_structures;
 

src/librustc_target/Cargo.toml

@@ -7,7 +7,6 @@ edition = "2018"
 [lib]
 name = "rustc_traits"
 path = "lib.rs"
-crate-type = ["dylib"]
 
 [dependencies]
 bitflags = "1.0"

src/librustc_target/lib.rs

@@ -7,8 +7,8 @@ edition = "2018"
 [lib]
 name = "rustc_typeck"
 path = "lib.rs"
-crate-type = ["dylib"]
 test = false
+doctest = false
 
 [dependencies]
 arena = { path = "../libarena" }

src/librustc_traits/Cargo.toml

@@ -7,7 +7,6 @@ edition = "2018"
 [lib]
 name = "serialize"
 path = "lib.rs"
-crate-type = ["dylib", "rlib"]
 
 [dependencies]
 smallvec = { version = "0.6.7", features = ["union", "may_dangle"] }

src/librustc_typeck/Cargo.toml

@@ -7,7 +7,7 @@ edition = "2018"
 [lib]
 name = "syntax"
 path = "lib.rs"
-crate-type = ["dylib"]
+doctest = false
 
 [dependencies]
 bitflags = "1.0"

src/libserialize/Cargo.toml

@@ -7,7 +7,7 @@ edition = "2018"
 [lib]
 name = "syntax_ext"
 path = "lib.rs"
-crate-type = ["dylib"]
+doctest = false
 
 [dependencies]
 fmt_macros = { path = "../libfmt_macros" }

src/libsyntax/Cargo.toml

@@ -7,7 +7,7 @@ edition = "2018"
 [lib]
 name = "syntax_pos"
 path = "lib.rs"
-crate-type = ["dylib"]
+doctest = false
 
 [dependencies]
 serialize = { path = "../libserialize" }

src/libsyntax_ext/Cargo.toml

@@ -2,6 +2,8 @@
 
 extern crate rustc;
 extern crate rustc_interface;
+#[allow(unused_extern_crates)]
+extern crate rustc_driver;
 extern crate syntax;
 
 use rustc::session::DiagnosticOutput;