lirc autogen.sh output

forage@forage-VirtualBox:~/lirc-git-e74abe2e1a403c467930df65774220812d0f8a36$ ./autogen.sh
configure.ac:300: warning: PKG_PROG_PKG_CONFIG is m4_require'd but not m4_defun'd
m4/systemd.m4:11: SYSTEMD_DIRECTORY_AC is expanded from...
m4/systemd.m4:69: SYSTEMD_SYSTEMUNITDIR_AC is expanded from...
m4/systemd.m4:89: SYSTEMD_SYSTEMUNITDIR is expanded from...
configure.ac:300: the top level
configure.ac:300: warning: PKG_PROG_PKG_CONFIG is m4_require'd but not m4_defun'd
m4/systemd.m4:11: SYSTEMD_DIRECTORY_AC is expanded from...
m4/systemd.m4:69: SYSTEMD_SYSTEMUNITDIR_AC is expanded from...
m4/systemd.m4:89: SYSTEMD_SYSTEMUNITDIR is expanded from...
configure.ac:300: the top level
configure.ac:300: warning: PKG_PROG_PKG_CONFIG is m4_require'd but not m4_defun'd
m4/systemd.m4:11: SYSTEMD_DIRECTORY_AC is expanded from...
m4/systemd.m4:69: SYSTEMD_SYSTEMUNITDIR_AC is expanded from...
m4/systemd.m4:89: SYSTEMD_SYSTEMUNITDIR is expanded from...
configure.ac:300: the top level
libtoolize: putting auxiliary files in `.'.
libtoolize: copying file `./ltmain.sh'
libtoolize: putting macros in AC_CONFIG_MACRO_DIR, `m4'.
libtoolize: copying file `m4/libtool.m4'
libtoolize: copying file `m4/ltoptions.m4'
libtoolize: copying file `m4/ltsugar.m4'
libtoolize: copying file `m4/ltversion.m4'
libtoolize: copying file `m4/lt~obsolete.m4'
configure.ac:300: warning: PKG_PROG_PKG_CONFIG is m4_require'd but not m4_defun'd
m4/systemd.m4:11: SYSTEMD_DIRECTORY_AC is expanded from...
m4/systemd.m4:69: SYSTEMD_SYSTEMUNITDIR_AC is expanded from...
m4/systemd.m4:89: SYSTEMD_SYSTEMUNITDIR is expanded from...
configure.ac:300: the top level
configure.ac:300: warning: PKG_PROG_PKG_CONFIG is m4_require'd but not m4_defun'd
m4/systemd.m4:11: SYSTEMD_DIRECTORY_AC is expanded from...
m4/systemd.m4:69: SYSTEMD_SYSTEMUNITDIR_AC is expanded from...
m4/systemd.m4:89: SYSTEMD_SYSTEMUNITDIR is expanded from...
configure.ac:300: the top level
configure.ac:300: warning: PKG_PROG_PKG_CONFIG is m4_require'd but not m4_defun'd
m4/systemd.m4:11: SYSTEMD_DIRECTORY_AC is expanded from...
m4/systemd.m4:69: SYSTEMD_SYSTEMUNITDIR_AC is expanded from...
m4/systemd.m4:89: SYSTEMD_SYSTEMUNITDIR is expanded from...
configure.ac:300: the top level
configure.ac:63: error: possibly undefined macro: AC_DEFINE
      If this token and others are legitimate, please use m4_pattern_allow.
      See the Autoconf documentation.
autoreconf: /usr/bin/autoconf failed with exit status: 1
forage@forage-VirtualBox:~/lirc-git-e74abe2e1a403c467930df65774220812d0f8a36$