fix: Resolve build failure on Apple Silicon of PHP 8.0 due to old bundled pcre2

src/PhpBrew/Build.php

@@ -64,6 +64,8 @@ class Build implements Buildable
 
     public $osRelease;
 
+    public $osArch;
+
     /**
      * Construct a Build object,.
      *
@@ -93,6 +95,7 @@ public function __construct($version, $name = null, $installPrefix = null)
         $this->setBuildSettings(new BuildSettings());
         $this->osName = php_uname('s');
         $this->osRelease = php_uname('r');
+        $this->osArch = php_uname('m');
     }
 
     public function getName()

src/PhpBrew/VariantBuilder.php

@@ -269,6 +269,24 @@ public function __construct()
         };
 
         $this->variants['pcre'] = function (ConfigureParameters $params, Build $build, $value) {
+            // Apple Silicon will crash on < 8.1.11 due to the bundled PCRE2 not being compatible with Apple Sillicon, so get an updated version if we can
+            // PHP 8.1.11 and above have the fix applied to its bundled PCRE2: https://github.com/php/php-src/commit/f8b217a3452e76113b833eec8a49bc2b6e8d1fdd
+            if ($build->compareVersion('8.0') >= 0 && $build->compareVersion('8.1.11') < 0 && $build->osName === 'Darwin' && $build->osArch === 'arm64') {
+                $prefix = Utils::findPrefix([
+                    new UserProvidedPrefix($value),
+                    new IncludePrefixFinder('pcre2.h'),
+                    new BrewPrefixFinder('pcre2'),
+                ]);
+
+                if ($prefix === null) {
+                    throw new Exception('Unable to find PCRE2 library. PHP 8.0 on Apple Silicon requires a newer version of PCRE2 than is bundled with PHP 8.0.');
+                }
+
+                $params = $params->withOption('--with-external-pcre', $prefix);
+                return $params;
+            }
+
+            // PCRE is bundled with PHP since 7.4
             if ($build->compareVersion('7.4') >= 0) {
                 return $params;
             }