Fix compiler-builtins publish

compiler-builtins currently wouldn't publish correctly because of a
relative path to `libm` that doesn't get included in the package. Fix
this by simlinking `libm` to within the `compiler-builtins` directory.

Also symlink LICENSE.txt which lets us drop the `include` array in
Cargo.toml. LICENSE.txt and compiler-rt were not being included anyway,
since Cargo silently drops items that are not within the crate
directory.

Author: tgross35

compiler-builtins/Cargo.toml

@@ -9,16 +9,6 @@ homepage = "https://github.com/rust-lang/compiler-builtins"
 documentation = "https://docs.rs/compiler_builtins"
 edition = "2021"
 description = "Compiler intrinsics used by the Rust compiler."
-include = [
-  "../LICENSE.txt",
-  "../compiler-rt/*",
-  "/Cargo.toml",
-  "/build.rs",
-  "/configure.rs",
-  "/src/*",
-  "README.md",
-  "libm/src/math/*",
-]
 links = 'compiler-rt'
 
 [lib]

compiler-builtins/LICENSE.txt

@@ -0,0 +1 @@
+../LICENSE.txt

compiler-builtins/src/lib.rs

@@ -45,7 +45,7 @@ pub mod math;
 pub mod mem;
 
 // `libm` expects its `support` module to be available in the crate root.
-use math::libm::support;
+use math::libm_math::support;
 
 #[cfg(target_arch = "arm")]
 pub mod arm;

compiler-builtins/src/math/libm_math

@@ -0,0 +1 @@
+../../../libm/src/math

compiler-builtins/src/math.rs renamed to compiler-builtins/src/math/mod.rs

@@ -2,15 +2,14 @@
 #[allow(dead_code)]
 #[allow(unused_imports)]
 #[allow(clippy::all)]
-#[path = "../../libm/src/math/mod.rs"]
-pub(crate) mod libm;
+pub(crate) mod libm_math;
 
 macro_rules! libm_intrinsics {
     ($(fn $fun:ident($($iid:ident : $ity:ty),+) -> $oty:ty;)+) => {
         intrinsics! {
             $(
                 pub extern "C" fn $fun($($iid: $ity),+) -> $oty {
-                    $crate::math::libm::$fun($($iid),+)
+                    $crate::math::libm_math::$fun($($iid),+)
                 }
             )+
         }