Improve build system, report error when build fail

Author: halx99

1k/1kiss.ps1

@@ -658,7 +658,7 @@ function find_prog($name, $path = $null, $mode = 'ONLY', $cmd = $null, $params =
             $verStr = $(. $cmd @params 2>$null) | Select-Object -First 1
             if ($LASTEXITCODE) {
                 Write-Warning "1kiss: Get version of $cmd fail"
-                $LASTEXITCODE = 0
+                $Global:LASTEXITCODE = 0
             }
             if (!$verStr -or $verStr.Contains('--version')) {
                 $verInfo = $cmd_info.Version

tools/cmdline/axmol.ps1

@@ -5,6 +5,9 @@ param(
 
 # Set-StrictMode -Version Latest
 
+# clear last exit code
+$Global:LASTEXITCODE = 0
+
 # pwsh function alias
 function println($message) { Write-Host "axmol: $message" }
 

tools/cmdline/build.ps1

@@ -199,7 +199,11 @@ if ($forceConfig) {
 . $1k_script @1k_args @forward_args @unhandled_args
 
 if (!$configOnly) {
-    $1k.pause('Build done')
+    if ($?) {
+        $1k.pause('Build success')
+    } else {
+        throw "Build fail, ret=$LASTEXITCODE"
+    }
 }
 else {
     $1k.pause('Generate done')