Augeas 1.2.0 is old enough to be available also in non-recent
distributions. Also, it allows ocaml-augeas to bind all the available
opening flags.
PKG_CHECK_MODULES([LIBXML2], [libxml-2.0])
dnl Check for Augeas C library.
PKG_CHECK_MODULES([LIBXML2], [libxml-2.0])
dnl Check for Augeas C library.
-PKG_CHECK_MODULES([AUGEAS], [augeas])
+PKG_CHECK_MODULES([AUGEAS], [augeas >= 1.2.0])
dnl Check for aug_source function, added in Augeas 1.8.0.
old_LIBS="$LIBS"
dnl Check for aug_source function, added in Augeas 1.8.0.
old_LIBS="$LIBS"