setup proper incremental build of build.odin.odin script

.editorconfig

@@ -27,6 +27,10 @@ indent_size  = 2
 indent_style = tab
 indent_size  = 2
 
+[*.odin]
+indent_style = tab
+indent_size  = 2
+
 [*.ps1]
 indent_style = tab
 indent_size  = 4

Odin/watl.v0.odin

@@ -6,6 +6,11 @@ Toolchain: odin-lang/Odin dev-2025-06
 */
 package odin
 
+main :: proc()
+{
+	
+}
+
 import "base:builtin"
 import "base:intrinsics"
 
@@ -103,29 +108,42 @@ sll_stack_push_n :: proc(first: ^$SLL_NodeType, n: ^SLL_NodeType) {
     first^ = n
 }
 sll_queue_push_nz :: proc(nil_val: ^$SLL_NodeType, first: ^SLL_NodeType, last: ^SLL_NodeType, n: ^SLL_NodeType) {
-    if first^ == nil_val {
-        first^ = n
-        last^ = n
-        n.next = nil_val
-    } else {
-        last^.next = n
-        last^ = n
-        n.next = nil_val
-    }
+	if first^ == nil_val {
+		first^ = n
+		last^ = n
+		n.next = nil_val
+	} else {
+		last^.next = n
+		last^ = n
+		n.next = nil_val
+	}
 }
 sll_queue_push_n :: proc(first: ^$SLL_NodeType, last: ^SLL_NodeType, n: ^SLL_NodeType) {
     sll_queue_push_nz(nil, first, last, n)
 }
 //#endregion("Memory")
 
+//#region Allocator Interface
+AllocatorOp :: enum u32 {
+	Alloc_NoZero = 0, // If Alloc exist, so must No_Zero
+	Alloc,
+	Free,
+	Reset,
+	Grow_NoZero,
+	Grow,
+	Shrink,
+	Rewind,
+	SavePoint,
+	Query, // Must always be implemented
+}
+AllocatorQueryFlag :: enum u64 {
+	
+}
+//#endregion Allocator Interface
+
 //#region("Strings")
 Raw_String :: struct {
 	data: [^]byte,
 	len:  int,
 }
 //#endregion("Strings")
-
-main :: proc()
-{
-
-}

scripts/build.odin.ps1

@@ -23,6 +23,13 @@ $flag_optimize_none         = '-o:none'
 $flag_output_path           = '-out='
 $flag_default_allocator_nil = '-default-to-nil-allocator'
 
+$need_rebuild = $false
+if (-not (test-path $exe)) { $need_rebuild = $true } 
+else {
+	$source_hash = (get-filehash $path_source -algorithm MD5).Hash
+	$exe_hash    = (get-filehash $exe         -algorithm MD5).Hash
+	if ($exe_hash -ne $source_hash) { $need_rebuild = $true }
+}
 push-location $path_root
 $build_args = @()
 $build_args += $command_build
@@ -36,6 +43,6 @@ $build_args += $flag_no_type_assert
 $build_args += $flag_dyn_map_calls
 $build_args += $flag_default_allocator_nil
 $build_args += $flag_output_path + $exe
-# & $odin $build_args
-& $exe
+if ($need_rebuild) { & $odin $build_args }
 pop-location
+& $exe