1dnl noarch_pkgconfigdir only available in pkg-config 0.27 and newer 2dnl http://lists.freedesktop.org/archives/pkg-config/2012-July/000875.html 3dnl Ubuntu 14.04 provides only pkg-config 0.26 so lacks this function. 4dnl 5dnl The Wayland project maintains automated builds for Ubuntu 14.04 in 6dnl a Launchpad PPA. 14.04 is a Long Term Support distro release, which 7dnl will reach EOL April 2019, however the Wayland PPA may stop targeting 8dnl it some time after the next LTS release (April 2016). 9m4_ifndef([PKG_NOARCH_INSTALLDIR], [AC_DEFUN([PKG_NOARCH_INSTALLDIR], [ 10 noarch_pkgconfigdir='${datadir}'/pkgconfig 11 AC_SUBST([noarch_pkgconfigdir]) 12])]) 13