diff --git a/src/SPC/builder/BuilderBase.php b/src/SPC/builder/BuilderBase.php
index 59f371ef..3d5648ef 100644
--- a/src/SPC/builder/BuilderBase.php
+++ b/src/SPC/builder/BuilderBase.php
@@ -233,8 +233,15 @@ abstract class BuilderBase
      */
     abstract public function buildPHP(int $build_target = BUILD_TARGET_NONE);
 
+    /**
+     * @throws WrongUsageException
+     * @throws RuntimeException
+     * @throws FileSystemException
+     */
     public function buildSharedExts(): void
     {
+        FileSystem::replaceFileLineContainsString(BUILD_BIN_PATH . '/php-config', 'extension_dir="', 'extension_dir="' . BUILD_MODULES_PATH . '"');
+        FileSystem::createDir(BUILD_MODULES_PATH);
         foreach ($this->getExts() as $ext) {
             if (!$ext->isBuildShared()) {
                 continue;
@@ -242,6 +249,9 @@ abstract class BuilderBase
             logger()->info('Building extension [' . $ext->getName() . '] as shared extension (' . $ext->getName() . '.so)');
             $ext->buildShared();
         }
+        if (getenv('EXTENSION_DIR')) {
+            FileSystem::replaceFileLineContainsString(BUILD_BIN_PATH . '/php-config', 'extension_dir="', 'extension_dir="' . getenv('EXTENSION_DIR') . '"');
+        }
     }
 
     /**
diff --git a/src/SPC/builder/Extension.php b/src/SPC/builder/Extension.php
index 808d8c54..1402bc58 100644
--- a/src/SPC/builder/Extension.php
+++ b/src/SPC/builder/Extension.php
@@ -319,10 +319,10 @@ class Extension
             ->execWithEnv(BUILD_BIN_PATH . '/phpize')
             ->execWithEnv('./configure ' . $this->getUnixConfigureArg(true) . ' --with-php-config=' . BUILD_BIN_PATH . '/php-config --enable-shared --disable-static')
             ->execWithEnv('make clean')
-            ->execWithEnv('make -j' . $this->builder->concurrency);
+            ->execWithEnv('make -j' . $this->builder->concurrency)
+            ->execWithEnv('make install');
 
         // copy shared library
-        FileSystem::createDir(BUILD_MODULES_PATH);
         $extensionDirFile = (getenv('EXTENSION_DIR') ?: $this->source_dir . '/modules') . '/' . $this->getName() . '.so';
         $sourceDirFile = $this->source_dir . '/modules/' . $this->getName() . '.so';
         if (file_exists($extensionDirFile)) {