...

.vscode/c_cpp_properties.json

@@ -4,14 +4,25 @@
         {
             "name": "kernel",
             "defines": [
-                "DEBUG"
+                "DEBUG",
+                "true=1", // https://github.com/microsoft/vscode-cpptools/issues/10696
+                "false=0" // https://github.com/microsoft/vscode-cpptools/issues/10696
             ],
             "includePath": [
                 "src/lib"
             ],
             "intelliSenseMode": "linux-gcc-x64",
             "compilerPath": "/usr/bin/x86_64-elf-gcc",
-            "cStandard": "c23"
+            "cStandard": "c23",
+            "compilerArgs": [
+                "-m64",
+                "-ffreestanding",
+                "-nostdinc",
+                "-nostdlib",
+                "-Wall",
+                "-Wextra",
+                "-Wshadow"
+            ]
         }
     ]
 }

linker.ld

@@ -3,29 +3,28 @@ ENTRY(_start)
 SECTIONS
 {
 	. = 2M;
-	kernel_start = .;
 
-	.text BLOCK(4K) : ALIGN(4K)
+	.text :
 	{
 		*(.multiboot)
 		*(.text)
 	}
 
-	.rodata BLOCK(4K) : ALIGN(4K)
+	.rodata :
 	{
 		*(.rodata)
 	}
 
-	.data BLOCK(4K) : ALIGN(4K)
+	.data :
 	{
 		*(.data)
 	}
 
-	.bss BLOCK(4K) : ALIGN(4K)
+	.bss :
 	{
 		*(COMMON)
 		*(.bss)
 	}
 
 	kernel_end = .;
-}
+}

makefile

@@ -8,7 +8,7 @@ LDFLAGS = -g
 ASFLAGS = -g -F dwarf
 
 # Do not modify
-CFLAGS 	+= -m64 -ffreestanding -nostdinc -nostdlib -fno-builtin -Wall -Wextra -Wshadow -std=c23 -I src/lib
+CFLAGS 	+= -m64 -ffreestanding -nostdinc -nostdlib -Wall -Wextra -Wshadow -std=c23 -I src/lib
 LDFLAGS	+=
 ASFLAGS	+= -f elf64