proc_macro: move to a dependency of libtest.

Author: eddyb

Cargo.lock

@@ -1927,7 +1927,6 @@ dependencies = [
  "log 0.4.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "parking_lot 0.6.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "polonius-engine 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "proc_macro 0.0.0",
  "rustc-rayon 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-rayon-core 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc_apfloat 0.0.0",
@@ -2345,7 +2344,6 @@ dependencies = [
  "flate2 1.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "memmap 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "proc_macro 0.0.0",
  "rustc 0.0.0",
  "rustc_data_structures 0.0.0",
  "rustc_errors 0.0.0",
@@ -2884,7 +2882,6 @@ version = "0.0.0"
 dependencies = [
  "fmt_macros 0.0.0",
  "log 0.4.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "proc_macro 0.0.0",
  "rustc_data_structures 0.0.0",
  "rustc_errors 0.0.0",
  "rustc_target 0.0.0",
@@ -2974,6 +2971,7 @@ name = "test"
 version = "0.0.0"
 dependencies = [
  "getopts 0.2.17 (registry+https://github.com/rust-lang/crates.io-index)",
+ "proc_macro 0.0.0",
  "term 0.0.0",
 ]
 

src/librustc/Cargo.toml

@@ -18,7 +18,6 @@ lazy_static = "1.0.0"
 scoped-tls = { version = "0.1.1", features = ["nightly"] }
 log = { version = "0.4", features = ["release_max_level_info", "std"] }
 polonius-engine = "0.5.0"
-proc_macro = { path = "../libproc_macro" }
 rustc-rayon = "0.1.1"
 rustc-rayon-core = "0.1.1"
 rustc_apfloat = { path = "../librustc_apfloat" }

src/librustc_metadata/Cargo.toml

@@ -12,7 +12,6 @@ crate-type = ["dylib"]
 flate2 = "1.0"
 log = "0.4"
 memmap = "0.6"
-proc_macro = { path = "../libproc_macro" }
 rustc = { path = "../librustc" }
 rustc_data_structures = { path = "../librustc_data_structures" }
 rustc_errors = { path = "../librustc_errors" }

src/libsyntax_ext/Cargo.toml

@@ -10,7 +10,6 @@ crate-type = ["dylib"]
 
 [dependencies]
 fmt_macros = { path = "../libfmt_macros" }
-proc_macro = { path = "../libproc_macro" }
 rustc_errors = { path = "../librustc_errors" }
 syntax = { path = "../libsyntax" }
 syntax_pos = { path = "../libsyntax_pos" }

src/libtest/Cargo.toml

@@ -11,3 +11,6 @@ crate-type = ["dylib", "rlib"]
 [dependencies]
 getopts = "0.2"
 term = { path = "../libterm" }
+
+# not actually used but needed to always have proc_macro in the sysroot
+proc_macro = { path = "../libproc_macro" }