diff --git a/src/SPC/util/GlobalEnvManager.php b/src/SPC/util/GlobalEnvManager.php
index 9f74d2df..4ce3384d 100644
--- a/src/SPC/util/GlobalEnvManager.php
+++ b/src/SPC/util/GlobalEnvManager.php
@@ -40,7 +40,12 @@ class GlobalEnvManager
         if (is_unix()) {
             self::addPathIfNotExists(BUILD_BIN_PATH);
             self::addPathIfNotExists(PKG_ROOT_PATH . '/bin');
-            self::putenv('PKG_CONFIG_PATH=' . BUILD_LIB_PATH . '/pkgconfig');
+            $pkgConfigPath = getenv('PKG_CONFIG_PATH');
+            if ($pkgConfigPath !== false) {
+                self::putenv('PKG_CONFIG_PATH=' . BUILD_LIB_PATH . "/pkgconfig:{$pkgConfigPath}");
+            } else {
+                self::putenv('PKG_CONFIG_PATH=' . BUILD_LIB_PATH . '/pkgconfig');
+            }
         }
 
         $ini = self::readIniFile();