On 08/19/2009 07:57 PM, Roland McGrath wrote:
-pthread means -D_REENTRANT and -lpthread. -D_REENTRANT is basically useless and you should use standard feature test macros or _GNU_SOURCE for what you want. So just linking with -lpthread is what I would call the normal and recommended practice.
On current Fedora with gcc+glibc(NativePosixThreadLibrary) this works today and has for some years. On some predecessor systems "gxx -pthread" was required for both compiling and linking. [gxx means gcc or g++.] On non-NPTL or non-Linux systems it may still be required today. Perhaps it may be required on future Fedora. Using "gxx -pthread" always is safe. At least, making it safe is a well- known part of the job of the maintainer of gxx. Using just "-lpthread" means that the user _assumes_ that compilation is independent of threading, or already has taken threading into account. -- -- fedora-devel-list mailing list fedora-devel-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/fedora-devel-list
