diff --git a/src/SPC/builder/linux/SystemUtil.php b/src/SPC/builder/linux/SystemUtil.php
index 419f69fe..6c1037ba 100644
--- a/src/SPC/builder/linux/SystemUtil.php
+++ b/src/SPC/builder/linux/SystemUtil.php
@@ -194,7 +194,7 @@ class SystemUtil
     /**
      * Get libc version string from ldd
      */
-    public static function getLibcVersionIfExists(string $libc): ?string
+    public static function getLibcVersionIfExists(?string $libc = null): ?string
     {
         if (self::$libc_version !== null) {
             return self::$libc_version;
diff --git a/src/SPC/builder/unix/library/ncurses.php b/src/SPC/builder/unix/library/ncurses.php
index f1792fa2..3899e559 100644
--- a/src/SPC/builder/unix/library/ncurses.php
+++ b/src/SPC/builder/unix/library/ncurses.php
@@ -6,6 +6,7 @@ namespace SPC\builder\unix\library;
 
 use SPC\store\FileSystem;
 use SPC\util\executor\UnixAutoconfExecutor;
+use SPC\util\SPCTarget;
 
 trait ncurses
 {
@@ -15,7 +16,7 @@ trait ncurses
 
         UnixAutoconfExecutor::create($this)
             ->appendEnv([
-                'LDFLAGS' => getenv('SPC_LIBC') === 'musl' ? '-static' : '',
+                'LDFLAGS' => SPCTarget::isStatic() ? '-static' : '',
             ])
             ->configure(
                 '--enable-overwrite',