diff --git a/Cargo.lock b/Cargo.lock
index 6a2b1bc41ef..f7d5a1a507b 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2073,6 +2073,7 @@ dependencies = [
 name = "rustc-main"
 version = "0.0.0"
 dependencies = [
+ "rustc_codegen_ssa 0.0.0",
  "rustc_driver 0.0.0",
  "rustc_target 0.0.0",
 ]
@@ -2169,7 +2170,6 @@ dependencies = [
  "memmap 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "num_cpus 1.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-demangle 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)",
- "rustc_codegen_ssa 0.0.0",
  "rustc_llvm 0.0.0",
 ]
 
@@ -2177,10 +2177,27 @@ dependencies = [
 name = "rustc_codegen_ssa"
 version = "0.0.0"
 dependencies = [
+ "bitflags 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "cc 1.0.25 (registry+https://github.com/rust-lang/crates.io-index)",
+ "jobserver 0.1.11 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.43 (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)",
  "num_cpus 1.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rustc 0.0.0",
  "rustc-demangle 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rustc_allocator 0.0.0",
+ "rustc_apfloat 0.0.0",
+ "rustc_codegen_utils 0.0.0",
+ "rustc_data_structures 0.0.0",
+ "rustc_errors 0.0.0",
+ "rustc_fs_util 0.0.0",
+ "rustc_incremental 0.0.0",
+ "rustc_mir 0.0.0",
+ "rustc_target 0.0.0",
+ "serialize 0.0.0",
+ "syntax 0.0.0",
+ "syntax_pos 0.0.0",
 ]
 
 [[package]]
diff --git a/src/librustc_codegen_llvm/Cargo.toml b/src/librustc_codegen_llvm/Cargo.toml
index 34017009c28..b711502b14b 100644
--- a/src/librustc_codegen_llvm/Cargo.toml
+++ b/src/librustc_codegen_llvm/Cargo.toml
@@ -13,7 +13,6 @@ test = false
 cc = "1.0.1"
 num_cpus = "1.0"
 rustc-demangle = "0.1.4"
-rustc_codegen_ssa = { path = "../librustc_codegen_ssa" }
 rustc_llvm = { path = "../librustc_llvm" }
 memmap = "0.6"
 
diff --git a/src/librustc_codegen_ssa/Cargo.toml b/src/librustc_codegen_ssa/Cargo.toml
index a158c34f9d1..7b1c7cfb56f 100644
--- a/src/librustc_codegen_ssa/Cargo.toml
+++ b/src/librustc_codegen_ssa/Cargo.toml
@@ -6,10 +6,29 @@ version = "0.0.0"
 [lib]
 name = "rustc_codegen_ssa"
 path = "lib.rs"
+crate-type = ["dylib"]
 test = false
 
 [dependencies]
+bitflags = "1.0.4"
 cc = "1.0.1"
 num_cpus = "1.0"
 rustc-demangle = "0.1.4"
 memmap = "0.6"
+log = "0.4.5"
+libc = "0.2.43"
+jobserver = "0.1.11"
+
+serialize = { path = "../libserialize" }
+syntax = { path = "../libsyntax" }
+syntax_pos = { path = "../libsyntax_pos" }
+rustc = { path = "../librustc" }
+rustc_allocator = { path = "../librustc_allocator" }
+rustc_apfloat = { path = "../librustc_apfloat" }
+rustc_codegen_utils = { path = "../librustc_codegen_utils" }
+rustc_data_structures = { path = "../librustc_data_structures"}
+rustc_errors = { path = "../librustc_errors" }
+rustc_fs_util = { path = "../librustc_fs_util" }
+rustc_incremental = { path = "../librustc_incremental" }
+rustc_mir = { path = "../librustc_mir" }
+rustc_target = { path = "../librustc_target" }
diff --git a/src/rustc/Cargo.toml b/src/rustc/Cargo.toml
index ec822fddef3..32969d09e85 100644
--- a/src/rustc/Cargo.toml
+++ b/src/rustc/Cargo.toml
@@ -11,5 +11,9 @@ path = "rustc.rs"
 rustc_target = { path = "../librustc_target" }
 rustc_driver = { path = "../librustc_driver" }
 
+# Make sure rustc_codegen_ssa ends up in the sysroot, because this
+# crate is intended to be used by codegen backends, which may not be in-tree.
+rustc_codegen_ssa = { path = "../librustc_codegen_ssa" }
+
 [features]
 jemalloc = ['rustc_driver/jemalloc-sys']