forward port v2 pgo changes

src/Package/Library/libaom.php

@@ -9,8 +9,10 @@ use StaticPHP\Attribute\Package\Library;
 use StaticPHP\Package\LibraryPackage;
 use StaticPHP\Runtime\Executor\UnixCMakeExecutor;
 use StaticPHP\Runtime\Executor\WindowsCMakeExecutor;
+use StaticPHP\Runtime\SystemTarget;
 use StaticPHP\Toolchain\Interface\ToolchainInterface;
 use StaticPHP\Toolchain\ZigToolchain;
+use StaticPHP\Util\System\UnixUtil;
 
 #[Library('libaom')]
 class libaom extends LibraryPackage
@@ -39,9 +41,19 @@ class libaom extends LibraryPackage
             $new = trim($extra . ' -D_GNU_SOURCE');
             f_putenv("SPC_COMPILER_EXTRA={$new}");
         }
+        $targetCpu = SystemTarget::getTargetArch();
+        if (str_starts_with($targetCpu, 'aarch')) {
+            $targetCpu = str_replace('aarch', 'arm', $targetCpu);
+        }
+        if (!UnixUtil::findCommand('nasm') && !UnixUtil::findCommand('yasm')) {
+            $targetCpu = 'generic';
+        }
         UnixCMakeExecutor::create($this)
             ->setBuildDir("{$this->getSourceDir()}/builddir")
-            ->addConfigureArgs('-DAOM_TARGET_CPU=generic')
+            ->addConfigureArgs(
+                "-DAOM_TARGET_CPU={$targetCpu}",
+                '-DCONFIG_RUNTIME_CPU_DETECT=1',
+            )
             ->build();
         f_putenv("SPC_COMPILER_EXTRA={$extra}");
         $this->patchPkgconfPrefix(['aom.pc']);