diff --git a/scripts/build.ps1 b/scripts/build.ps1
index 4371d82..b45375c 100644
--- a/scripts/build.ps1
+++ b/scripts/build.ps1
@@ -8,5 +8,39 @@ if ((test-path $path_build) -eq $false) {
 	new-item -itemtype directory -path $path_build
 }
 
+# --- Toolchain Definition ---
+# Assumes 'mipsel-none-elf' toolchain is in your system's PATH.
+$compiler  = "clang"
+$linker    = 'lld-link.exe'
+
+function compile-unit { param(
+	[string]  $unit,
+	[string]  $link_module,
+	[string[]]$include_paths,
+	[string[]]$user_compile_args
+)
+	$compile_args = @()
 
 
+    write-host "Compiling '$unit' -> '$link_module'" -ForegroundColor DarkCyan
+    # $compile_args | ForEach-Object { Write-Host "`t$_" -ForegroundColor Green }
+		& $Compiler $compile_args
+    if ($LASTEXITCODE -ne 0) { write-error "Compilation failed for $unit. Aborting."; exit 1 }
+}
+
+function link-modules { param([string[]]$link_modules, [string]  $elf, [string[]]$user_link_args)
+	$link_args = @()
+
+	write-host "Linking modules into '$elf'"  -ForegroundColor DarkCyan
+	$final_link_args += ($f_link_pass_through_prefix + $f_link_end_group)
+	# $final_link_args | foreach-object { write-host $_ }
+		& $Compiler $final_link_args
+		& mipsel-none-elf-objdump.exe -W $elf >> $dasm
+	if ($LASTEXITCODE -ne 0) { write-error "Linking failed. Aborting."; exit 1 }
+}
+
+function build-part_1() {
+	
+}
+build-part_1()
+