starting phase `autoconf'
autoreconf: 'libpthread/configure.ac' and 'libpthread/configure.in' both present.
autoreconf: proceeding with 'libpthread/configure.ac'
autoreconf: Entering directory `libpthread'
autoreconf: 'configure.ac' and 'configure.in' both present.
autoreconf: proceeding with 'configure.ac'
autoreconf: configure.ac: not using Gettext
autoreconf: running: aclocal 
aclocal: warning: autoconf input should be named 'configure.ac', not 'configure.in'
aclocal: warning: 'configure.ac' and 'configure.in' both present.
aclocal: proceeding with 'configure.ac'
autoreconf: configure.ac: tracing
autoconf: warning: both `configure.ac' and `configure.in' are present.
autoconf: warning: proceeding with `configure.ac'.
autoreconf: configure.ac: creating directory build-aux
autoreconf: configure.ac: not using Libtool
autoreconf: running: /gnu/store/1i1jcl43kcs9v0g962sj5s70igxy2g2g-autoconf-2.69/bin/autoconf
autoconf: warning: both `configure.ac' and `configure.in' are present.
autoconf: warning: proceeding with `configure.ac'.
autoreconf: running: /gnu/store/1i1jcl43kcs9v0g962sj5s70igxy2g2g-autoconf-2.69/bin/autoheader
autoheader: 'configure.ac' and 'configure.in' both present.
autoheader: proceeding with 'configure.ac'
autoreconf: running: automake --add-missing --copy --no-force
automake: warning: autoconf input should be named 'configure.ac', not 'configure.in'
automake: warning: 'configure.ac' and 'configure.in' both present.
automake: proceeding with 'configure.ac'
patch-shebang: configure: changing `/bin/sh' to `/gnu/store/x26nnlh6azmnd0ibdyfwafdc6rkzx17w-bash-light-4.2/bin/sh'
configure.ac:36: installing 'build-aux/compile'
configure.ac:45: installing 'build-aux/config.guess'
configure.ac:45: installing 'build-aux/config.sub'
configure.ac:29: installing 'build-aux/install-sh'
configure.ac:29: installing 'build-aux/missing'
Makefile.am: installing './INSTALL'
automake: warning: autoconf input should be named 'configure.ac', not 'configure.in'
automake: warning: 'configure.ac' and 'configure.in' both present.
automake: proceeding with 'configure.ac'
Makefile.am:77: error: Libtool library used but 'LIBTOOL' is undefined
Makefile.am:77:   The usual way to define 'LIBTOOL' is to add 'LT_INIT'
Makefile.am:77:   to 'configure.ac' and run 'aclocal' and 'autoconf' again.
Makefile.am:77:   If 'LT_INIT' is in 'configure.ac', make sure
Makefile.am:77:   its definition is in aclocal's search path.
Makefile.am: installing 'build-aux/depcomp'
autoreconf: automake failed with exit status: 1
phase `autoconf' succeeded after 3 seconds