Z:gnu-www-ja-gpl-2.0-faq--4d0d6a-=3Cb=3E=3Ca href=3D"=23TOCMoneyGuzzlerIn/en

'''I'd like to modify GPL-covered programs and link them with the portability libraries from Money Guzzler Inc. I cannot distribute the source code for these libraries, so any user who wanted to change these versions would have to obtained those libraries separately. Why doesn't the GPL permit this?'''