don't build iconv program, or gettext programs

src/SPC/builder/unix/library/gettext.php

@@ -31,7 +31,7 @@ trait gettext
             $autoconf->addConfigureArgs('--disable-threads');
         }
 
-        $autoconf->configure()->make();
+        $autoconf->configure()->make(dir: $this->getSourceDir() . '/gettext-runtime/intl');
         $this->patchLaDependencyPrefix();
     }
 }

src/SPC/builder/unix/library/libiconv.php

@@ -10,7 +10,13 @@ trait libiconv
 {
     protected function build(): void
     {
-        UnixAutoconfExecutor::create($this)->configure('--enable-extra-encodings')->make();
+        UnixAutoconfExecutor::create($this)
+            ->configure(
+                '--enable-extra-encodings',
+                '--enable-year2038',
+            )
+            ->make('install-lib', with_install: false)
+            ->make('install-lib', with_install: false, dir: $this->getSourceDir() . '/libcharset');
         $this->patchLaDependencyPrefix();
     }
 }