from git://git.savannah.gnu.org/autoconf-archive.git
100644 blob d383ad5c6d m4/ax_pthread.m4
dd94691 AX_PTHREAD: add support for Clang
386b290 AX_PTHREAD: fix support for AIX
e40cfd6 AX_PTHREAD: improve support for AIX
Change-Id: Ic1f1edc656e4e917b88f151493147f650b94242f
patch by Jan Engelhardt (jengelh at medozas dot de)
Fixes the error:
aclocal: couldn't open directory "m4": No such file or directory
autoreconf: aclocal failed with exit status: 1
Change-Id: I1c1cd2c3d96f0d7d25616ec084dfc9bf9077fd4f