dnl The only dependency is libpcre (Perl Compatible Regular Expressions).
PKG_CHECK_MODULES([PCRE], [libpcre])
+dnl Optional for building the manual page. This is part of Perl.
+AC_CHECK_PROG([POD2MAN], [pod2man], [pod2man], [no])
+AM_CONDITIONAL([HAVE_POD2MAN], [test "x$POD2MAN" != "xno"])
+
dnl Produce output files.
AC_CONFIG_HEADERS([config.h])