Add watcher

src/Package/Library/watcher.php

@@ -0,0 +1,32 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Package\Library;
+
+use StaticPHP\Attribute\Package\BuildFor;
+use StaticPHP\Attribute\Package\Library;
+use StaticPHP\Package\LibraryPackage;
+use StaticPHP\Util\FileSystem;
+
+#[Library('watcher')]
+class watcher extends LibraryPackage
+{
+    #[BuildFor('Darwin')]
+    #[BuildFor('Linux')]
+    public function build(): void
+    {
+        $cflags = $this->getLibExtraCXXFlags();
+        if (stripos($cflags, '-fpic') === false) {
+            $cflags .= ' -fPIC';
+        }
+        $ldflags = $this->getLibExtraLdFlags() ? ' ' . $this->getLibExtraLdFlags() : '';
+        shell()->cd("{$this->getSourceDir()}/watcher-c")
+            ->exec(getenv('CXX') . " -c -o libwatcher-c.o ./src/watcher-c.cpp -I ./include -I ../include -std=c++17 -Wall -Wextra {$cflags}{$ldflags}")
+            ->exec(getenv('AR') . ' rcs libwatcher-c.a libwatcher-c.o');
+
+        copy("{$this->getSourceDir()}/watcher-c/libwatcher-c.a", "{$this->getLibDir()}/libwatcher-c.a");
+        FileSystem::createDir("{$this->getIncludeDir()}/wtr");
+        copy("{$this->getSourceDir()}/watcher-c/include/wtr/watcher-c.h", "{$this->getIncludeDir()}/wtr/watcher-c.h");
+    }
+}