diff --git a/base/PerfOptions.php b/base/PerfOptions.php
index 3b26eb8..59b89c0 100644
--- a/base/PerfOptions.php
+++ b/base/PerfOptions.php
@@ -95,6 +95,7 @@ final class PerfOptions {
 
   public bool $daemonOutputToFile = false;
   public string $tempDir;
+  public ?string $srcDir;
 
   public bool $notBenchmarking = false;
 
@@ -159,6 +160,7 @@ public function __construct(Vector<string> $argv) {
 
       'daemon-files',  // daemon output goes to files in the temp directory
       'temp-dir:',  // temp directory to use; if absent one in /tmp is made
+      'src-dir:',   // location for source to copy into tmp dir instead of ZIP
     };
     $targets = $this->getTargetDefinitions()->keys();
     $def->addAll($targets);
@@ -288,6 +290,8 @@ public function __construct(Vector<string> $argv) {
       $this->tempDir = $argTempDir;
     }
 
+    $this->srcDir = $this->getNullableString('src-dir');
+
   }
 
   public function validate() {
diff --git a/base/Utils.php b/base/Utils.php
index 7fbd692..f4c317a 100644
--- a/base/Utils.php
+++ b/base/Utils.php
@@ -10,6 +10,7 @@
  */
 
 final class Utils {
+
   public static function ExtractTar(
     string $tar_file,
     string $extract_to,
@@ -31,9 +32,32 @@ public static function ExtractTar(
       $tar_file,
     }));
   }
+
+  public static function CopyDirContents (
+    string $from,
+    string $to,
+  ): void {
+    invariant(is_dir($from), '%s is not a directory', $from);
+    mkdir($to, 0777, true);
+    $from_dir = opendir($from);
+    while (($name = readdir($from_dir)) !== false) {
+      if ($name != '.' && $name != '..') {
+        $from_name = $from . DIRECTORY_SEPARATOR . $name;
+        $to_name = $to . DIRECTORY_SEPARATOR . $name;
+        if (is_dir($from_name) ) {
+          Utils::CopyDirContents($from_name, $to_name);
+        } else {
+          copy($from_name, $to_name);
+        }
+      }
+    }
+    closedir($from_dir);
+  }
+
   public static function EscapeCommand(Vector<string> $command): string {
     return implode(' ', $command->map($x ==> escapeshellarg($x)));
   }
+
   public static function RunCommand(Vector<string> $args): string {
     return shell_exec(self::EscapeCommand($args));
   }
diff --git a/targets/codeigniter/CodeIgniterTarget.php b/targets/codeigniter/CodeIgniterTarget.php
index a8f90bf..70219df 100644
--- a/targets/codeigniter/CodeIgniterTarget.php
+++ b/targets/codeigniter/CodeIgniterTarget.php
@@ -22,12 +22,20 @@ protected function getSanityCheckString(): string {
   }
 
   public function install(): void {
-    shell_exec($this->safeCommand(Vector {
-      'tar',
-      '-C', $this->options->tempDir,
-      '-zxf',
-      __DIR__.'/CodeIgniter-2.2.0.tar.gz'
-    }));
+    $src_dir = $this->options->srcDir;
+    if ($src_dir) {
+      Utils::CopyDirContents(
+        $src_dir,
+        $this->getSourceRoot(),
+      );
+    } else {
+      shell_exec($this->safeCommand(Vector {
+        'tar',
+        '-C', $this->options->tempDir,
+        '-zxf',
+        __DIR__.'/CodeIgniter-2.2.0.tar.gz'
+      }));
+    }
 
     $index_path = $this->options->tempDir.'/CodeIgniter-2.2.0/index.php';
     $index = file_get_contents($index_path);
diff --git a/targets/drupal7/Drupal7Target.php b/targets/drupal7/Drupal7Target.php
index 03921e1..7f830d9 100644
--- a/targets/drupal7/Drupal7Target.php
+++ b/targets/drupal7/Drupal7Target.php
@@ -20,15 +20,22 @@ protected function getSanityCheckString(): string {
   }
 
   public function install(): void {
-    Utils::ExtractTar(
-      __DIR__.'/drupal-7.31.tar.gz',
-      $this->options->tempDir,
-    );
-
-    Utils::ExtractTar(
-      __DIR__.'/demo-static.tar.bz2',
-      $this->getSourceRoot().'/sites/default',
-    );
+    $src_dir = $this->options->srcDir;
+    if ($src_dir) {
+      Utils::CopyDirContents(
+        $src_dir,
+        $this->getSourceRoot(),
+      );
+    } else {
+      Utils::ExtractTar(
+        __DIR__.'/drupal-7.31.tar.gz',
+        $this->options->tempDir,
+      );
+      Utils::ExtractTar(
+        __DIR__.'/demo-static.tar.bz2',
+        $this->getSourceRoot().'/sites/default',
+      );
+    }
 
     copy(
       'compress.zlib://'.__DIR__.'/settings.php.gz',
diff --git a/targets/laravel/LaravelTarget.php b/targets/laravel/LaravelTarget.php
index 5c01fa2..2808c3e 100644
--- a/targets/laravel/LaravelTarget.php
+++ b/targets/laravel/LaravelTarget.php
@@ -20,18 +20,27 @@ protected function getSanityCheckString(): string {
   }
 
   public function install(): void {
-    shell_exec($this->safeCommand(Vector {
-      'tar',
-      '-C', $this->options->tempDir,
-      '-zxf',
-      __DIR__.'/laravel-4.2.0.tar.gz'
-    }));
-    shell_exec($this->safeCommand(Vector {
-      'tar',
-      '-C', $this->options->tempDir.'/laravel-4.2.0',
-      '-jxf',
-      __DIR__.'/vendor.tar.bz2'
-    }));
+    $src_dir = $this->options->srcDir;
+    if ($src_dir) {
+      Utils::CopyDirContents(
+        $src_dir,
+        $this->getSourceRoot(),
+      );
+    } else {
+      shell_exec($this->safeCommand(Vector {
+        'tar',
+        '-C', $this->options->tempDir,
+        '-zxf',
+        __DIR__.'/laravel-4.2.0.tar.gz'
+      }));
+      shell_exec($this->safeCommand(Vector {
+        'tar',
+        '-C', $this->options->tempDir.'/laravel-4.2.0',
+        '-jxf',
+        __DIR__.'/vendor.tar.bz2'
+      }));
+    }
+
   }
 
   public function getSourceRoot(): string {
diff --git a/targets/magento1/Magento1Target.php b/targets/magento1/Magento1Target.php
index 598931b..6cef811 100644
--- a/targets/magento1/Magento1Target.php
+++ b/targets/magento1/Magento1Target.php
@@ -44,7 +44,7 @@ private function setPermissions() : void {
         'chmod',
         '-R',
         'o+w',
-        $this->getSourceRoot().'/'.$dir 
+        $this->getSourceRoot().'/'.$dir
       }));
     }
   }
@@ -78,10 +78,19 @@ private function getSampleDataDirectory() : string {
   }
 
   public function install(): void {
-    Utils::ExtractTar(
-      __DIR__.'/magento-1.9.0.1.tar.gz',
-      $this->options->tempDir,
-    );
+    $src_dir = $this->options->srcDir;
+    if ($src_dir) {
+      Utils::CopyDirContents(
+        $src_dir,
+        $this->getSourceRoot(),
+      );
+    } else {
+      Utils::ExtractTar(
+        __DIR__.'/magento-1.9.0.1.tar.gz',
+        $this->options->tempDir,
+      );
+    }
+
     if ($this->options->skipDatabaseInstall) {
       copy(
         __DIR__.'/local.xml',
diff --git a/targets/mediawiki/MediaWikiTarget.php b/targets/mediawiki/MediaWikiTarget.php
index 6570c4b..aaeb06e 100644
--- a/targets/mediawiki/MediaWikiTarget.php
+++ b/targets/mediawiki/MediaWikiTarget.php
@@ -20,10 +20,18 @@ protected function getSanityCheckString(): string {
   }
 
   public function install(): void {
-    Utils::ExtractTar(
-      __DIR__.'/mediawiki-1.24.0.tar.gz',
-      $this->options->tempDir,
-    );
+    $src_dir = $this->options->srcDir;
+    if ($src_dir) {
+      Utils::CopyDirContents(
+        $src_dir,
+        $this->getSourceRoot(),
+      );
+    } else {
+      Utils::ExtractTar(
+        __DIR__.'/mediawiki-1.24.0.tar.gz',
+        $this->options->tempDir,
+      );
+    }
 
     (new DatabaseInstaller($this->options))
       ->setDatabaseName('mw_bench')
diff --git a/targets/sugarcrm/SugarCRMTarget.php b/targets/sugarcrm/SugarCRMTarget.php
index 2bd6331..047a533 100644
--- a/targets/sugarcrm/SugarCRMTarget.php
+++ b/targets/sugarcrm/SugarCRMTarget.php
@@ -16,8 +16,16 @@ public function __construct(
   }
 
   public function install(): void {
-    $pd = new PharData(__DIR__.'/SugarCE-6.5.20.zip');
-    $pd->extractTo($this->options->tempDir);
+    $src_dir = $this->options->srcDir;
+    if ($src_dir) {
+      Utils::CopyDirContents(
+        $src_dir,
+        $this->getSourceRoot(),
+      );
+    } else {
+      $pd = new PharData(__DIR__.'/SugarCE-6.5.20.zip');
+      $pd->extractTo($this->options->tempDir);
+    }
 
     copy(
       __DIR__.'/config.php',
diff --git a/targets/wordpress/WordpressTarget.php b/targets/wordpress/WordpressTarget.php
index 0750820..4406525 100644
--- a/targets/wordpress/WordpressTarget.php
+++ b/targets/wordpress/WordpressTarget.php
@@ -21,10 +21,18 @@ public function getSanityCheckString(): string {
   }
 
   public function install(): void {
-    Utils::ExtractTar(
-      __DIR__.'/wordpress-3.9.1.tar.gz',
-      $this->options->tempDir,
-    );
+    $src_dir = $this->options->srcDir;
+    if ($src_dir) {
+      Utils::CopyDirContents(
+        $src_dir,
+        $this->getSourceRoot(),
+      );
+    } else {
+      Utils::ExtractTar(
+        __DIR__.'/wordpress-3.9.1.tar.gz',
+        $this->options->tempDir,
+      );
+    }
 
     copy(
       __DIR__.'/wp-config.php',