Make rustc directly invoke the linker

Cargo.toml

@@ -4,11 +4,6 @@ version = "0.4.1"
 build = "build.rs"
 edition = "2021"
 
-[lib]
-name = "kernel"
-path = "src/lib.rs"
-crate-type = ["staticlib"]
-
 [build-dependencies]
 cc = "1.0.3"
 rustc-cfg = "0.3.0"

src/main.rs

@@ -55,6 +55,7 @@
 #![feature(slice_ptr_get, slice_ptr_len)]
 #![feature(sync_unsafe_cell)]
 #![no_std]
+#![no_main]
 
 #[cfg(any(target_arch = "x86", target_arch = "x86_64"))]
 pub extern crate x86;

targets/aarch64-unknown-kernel.json

@@ -8,14 +8,15 @@
     "os": "none",
     "env": "",
     "vendor": "unknown",
-    "linker-flavor": "gcc",
+    "linker": "rust-lld",
+    "linker-flavor": "gnu-lld",
     "target-family": "redox",
     "pre-link-args": {
-        "gcc": ["-m64", "-nostdlib", "-static"]
+        "gnu-lld": ["-z", "max-page-size=0x1000"]
     },
     "features": "+strict-align,-neon,-fp-armv8,+tpidr-el1",
     "dynamic-linking": false,
-    "executables": false,
+    "executables": true,
     "relocation-model": "pic",
     "disable-redzone": true,
     "frame-pointer": "always",

targets/i686-unknown-kernel.json

@@ -8,14 +8,15 @@
     "os": "none",
     "env": "",
     "vendor": "unknown",
-    "linker-flavor": "gcc",
+    "linker": "rust-lld",
+    "linker-flavor": "gnu-lld",
     "target-family": "redox",
     "pre-link-args": {
-        "gcc": ["-m32", "-nostdlib", "-static"]
+        "gnu-lld": ["-z", "max-page-size=0x1000"]
     },
     "features": "-mmx,-sse,-sse2,-sse3,-ssse3,-sse4.1,-sse4.2,-3dnow,-3dnowa,-avx,-avx2,+soft-float",
     "dynamic-linking": false,
-    "executables": false,
+    "executables": true,
     "relocation-model": "static",
     "code-model": "kernel",
     "disable-redzone": true,

targets/x86_64-unknown-kernel.json

@@ -8,14 +8,15 @@
     "os": "none",
     "env": "",
     "vendor": "unknown",
-    "linker-flavor": "gcc",
+    "linker": "rust-lld",
+    "linker-flavor": "gnu-lld",
     "target-family": "redox",
     "pre-link-args": {
-        "gcc": ["-m64", "-nostdlib", "-static"]
+        "gnu-lld": ["-z", "max-page-size=0x1000"]
     },
     "features": "-mmx,-sse,-sse2,-sse3,-ssse3,-sse4.1,-sse4.2,-3dnow,-3dnowa,-avx,-avx2,+soft-float",
     "dynamic-linking": false,
-    "executables": false,
+    "executables": true,
     "relocation-model": "static",
     "code-model": "kernel",
     "disable-redzone": true,