diff --git a/src/SPC/builder/unix/library/watcher.php b/src/SPC/builder/unix/library/watcher.php
index 19f881b7..84f8140e 100644
--- a/src/SPC/builder/unix/library/watcher.php
+++ b/src/SPC/builder/unix/library/watcher.php
@@ -16,9 +16,13 @@ trait watcher
      */
     protected function build(): void
     {
+        $cflags = $this->getLibExtraCXXFlags();
+        if (stripos($cflags, '-fpic') === false) {
+            $cflags .= ' -fPIC';
+        }
+        $ldflags = $this->getLibExtraLdFlags() ? ' ' . $this->getLibExtraLdFlags() : '';
         shell()->cd($this->source_dir . '/watcher-c')
-            ->initializeEnv($this)
-            ->exec(getenv('CXX') . ' -c -o libwatcher-c.o ./src/watcher-c.cpp -I ./include -I ../include -std=c++17 -Wall -Wextra -fPIC')
+            ->exec(getenv('CXX') . " -c -o libwatcher-c.o ./src/watcher-c.cpp -I ./include -I ../include -std=c++17 -Wall -Wextra {$cflags}{$ldflags}")
             ->exec(getenv('AR') . ' rcs libwatcher-c.a libwatcher-c.o');
 
         copy($this->source_dir . '/watcher-c/libwatcher-c.a', BUILD_LIB_PATH . '/libwatcher-c.a');