Z:gnu-www-ja-gpl-faq--04e596-=26ldquo;Corresponding Source=26rd/en

&ldquo;Corresponding Source&rdquo; is defined in section 1 of the license, and you should provide what it lists. So, if your modified version depends on libraries under other licenses, such as the Expat license or GPLv3, the Corresponding Source should include those libraries (unless they are System Libraries). If you have modified those libraries, you must provide your modified source code for them.