add ext-decimal

src/SPC/builder/windows/library/libmpdec.php

@@ -0,0 +1,31 @@
+<?php
+
+declare(strict_types=1);
+
+namespace SPC\builder\windows\library;
+
+class libmpdec extends WindowsLibraryBase
+{
+    public const NAME = 'libmpdec';
+
+    protected function build(): void
+    {
+        $makefile_dir = $this->source_dir . '\libmpdec';
+        $nmake = $this->builder->makeSimpleWrapper('nmake /nologo');
+
+        cmd()->cd($makefile_dir)
+            ->exec('copy /y Makefile.vc Makefile')
+            ->execWithWrapper($nmake, 'clean')
+            ->execWithWrapper($nmake, 'MACHINE=x64');
+
+        // Copy static lib (rename from versioned name to libmpdec_a.lib)
+        $libs = glob($makefile_dir . '\libmpdec-*.lib');
+        foreach ($libs as $lib) {
+            if (!str_contains($lib, '.dll.')) {
+                copy($lib, BUILD_LIB_PATH . '\libmpdec_a.lib');
+                break;
+            }
+        }
+        copy($makefile_dir . '\mpdecimal.h', BUILD_INCLUDE_PATH . '\mpdecimal.h');
+    }
+}