Roger Shimizu, on Thu 17 Dec 2015 22:39:18 +0900, wrote: > it's safe for most common application to treat __GLIBC__ > as "Yes" for Linux and Hurd. It's yes when the libc being used is glibc. On linux with uclibc for instance, it wouldn't be defined. So depending on what feature exactly you want to test it may be useful or not. Samuel