Jan Beich 04c0110c8a math/xspread: drop unused libpthread-stubs ...

libpthread-stubs no longer provides shared library since 9cba0ef67a:

$ make clean all WITH=X11
[...]
===>   xspread-3.1.1c_4 depends on shared library: libpthread-stubs.so - not found

2023-02-10 15:55:49 +00:00

..

files

…

distinfo

…

Makefile

…

pkg-descr

…