diff --git a/config/pkg/ext/ext-fastchart.yml b/config/pkg/ext/ext-fastchart.yml
new file mode 100644
index 00000000..0abbc892
--- /dev/null
+++ b/config/pkg/ext/ext-fastchart.yml
@@ -0,0 +1,20 @@
+ext-fastchart:
+  type: php-extension
+  artifact:
+    source:
+      type: ghtar
+      repo: iliaal/fastchart
+      extract: php-src/ext/fastchart
+      prefer-stable: true
+    metadata:
+      license-files: [LICENSE]
+  depends:
+    - freetype
+  suggests:
+    - libpng
+    - libjpeg
+    - libwebp
+  php-extension:
+    os:
+      - Linux
+      - Darwin
diff --git a/config/pkg/ext/ext-fastjson.yml b/config/pkg/ext/ext-fastjson.yml
new file mode 100644
index 00000000..4644e820
--- /dev/null
+++ b/config/pkg/ext/ext-fastjson.yml
@@ -0,0 +1,14 @@
+ext-fastjson:
+  type: php-extension
+  artifact:
+    source:
+      type: ghtar
+      repo: iliaal/fastjson
+      extract: php-src/ext/fastjson
+      prefer-stable: true
+    metadata:
+      license-files: [LICENSE]
+  php-extension:
+    os:
+      - Linux
+      - Darwin
diff --git a/src/Package/Extension/clickhouse.php b/src/Package/Extension/clickhouse.php
index 3e11975f..f4e6978d 100644
--- a/src/Package/Extension/clickhouse.php
+++ b/src/Package/Extension/clickhouse.php
@@ -4,29 +4,14 @@ declare(strict_types=1);
 
 namespace Package\Extension;
 
-use Package\Target\php;
-use StaticPHP\Attribute\Package\BeforeStage;
 use StaticPHP\Attribute\Package\CustomPhpConfigureArg;
 use StaticPHP\Attribute\Package\Extension;
-use StaticPHP\Attribute\PatchDescription;
 use StaticPHP\Package\PackageInstaller;
 use StaticPHP\Package\PhpExtensionPackage;
-use StaticPHP\Util\FileSystem;
 
 #[Extension('clickhouse')]
 class clickhouse extends PhpExtensionPackage
 {
-    #[BeforeStage('php', [php::class, 'buildconfForUnix'], 'ext-clickhouse')]
-    #[PatchDescription('Replace THIS_DIR=`dirname $0` with PHP_EXT_SRCDIR() in config.m4 so include paths resolve to the ext source dir during PHP main configure (dirname $0 returns "." when run from php-src root).')]
-    public function patchBeforeBuildconfUnix(): void
-    {
-        FileSystem::replaceFileRegex(
-            "{$this->getSourceDir()}/config.m4",
-            '/^(\s*)THIS_DIR=.*/m',
-            '$1THIS_DIR=PHP_EXT_SRCDIR()',
-        );
-    }
-
     #[CustomPhpConfigureArg('Darwin')]
     #[CustomPhpConfigureArg('Linux')]
     public function getUnixConfigureArg(bool $shared, PackageInstaller $installer): string
diff --git a/src/Package/Library/imagemagick.php b/src/Package/Library/imagemagick.php
index fd5de9ed..d423163a 100644
--- a/src/Package/Library/imagemagick.php
+++ b/src/Package/Library/imagemagick.php
@@ -42,6 +42,9 @@ class imagemagick
             ->addConfigureArgs(
                 '--disable-openmp',
                 '--without-x',
+                // implicit --with-gcc-arch
+                // bleeds host cpu features into built binaries
+                '--without-gcc-arch',
             );
 
         // special: linux-static target needs `-static`
diff --git a/src/Package/Library/libaom.php b/src/Package/Library/libaom.php
index 7e578242..c37c2b7c 100644
--- a/src/Package/Library/libaom.php
+++ b/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']);