+AC_ARG_WITH(openvpn, AC_HELP_STRING([--with-openvpn=PROGRAM],
+ [specify location of openvpn binary]), [path_openvpn=${withval}])
+
+AC_ARG_ENABLE(openvpn,
+ AC_HELP_STRING([--enable-openvpn], [enable openvpn support]),
+ [enable_openvpn=${enableval}], [enable_openvpn="no"])
+if (test "${enable_openvpn}" != "no"); then
+ if (test -z "${path_openvpn}"); then
+ AC_PATH_PROG(OPENVPN, [openvpn], [/usr/bin/openvpn], $PATH:/bin:/usr/bin)
+ if (test -z "${OPENVPN}"); then
+ AC_MSG_ERROR(openvpn binary not found)
+ fi
+ else
+ OPENVPN="${path_openvpn}"
+ AC_SUBST(OPENVPN)
+ fi
+fi
+AM_CONDITIONAL(OPENVPN, test "${enable_openvpn}" != "no")
+AM_CONDITIONAL(OPENVPN_BUILTIN, test "${enable_openvpn}" = "builtin")
+
+AC_ARG_WITH(ipsec, AC_HELP_STRING([--with-ipsec=PROGRAM],
+ [specify location of ipsec binary]), [path_ipsec=${withval}])
+
+AC_ARG_ENABLE(ipsec,
+ AC_HELP_STRING([--enable-ipsec], [enable ipsec support]),
+ [enable_ipsec=${enableval}], [enable_ipsec="no"])
+if (test "${enable_ipsec}" != "no"); then
+ PKG_CHECK_MODULES(GIO, gio-2.0 >= 2.28, dummy=yes,
+ AC_MSG_ERROR(GIO >= 2.28 is required))
+ AC_SUBST(GIO_CFLAGS)
+ AC_SUBST(GIO_LIBS)
+ if (test -z "${path_ipsec}"); then
+ AC_PATH_PROG(IPSEC, [charon], [/usr/bin/charon], $PATH:/usr/bin)
+ if (test -z "${IPSEC}"); then
+ AC_MSG_ERROR(ipsec binary not found)
+ fi
+ else
+ IPSEC="${path_ipsec}"
+ AC_SUBST(IPSEC)
+ fi
+fi
+AM_CONDITIONAL(IPSEC, test "${enable_ipsec}" != "no")
+AM_CONDITIONAL(IPSEC_BUILTIN, test "${enable_ipsec}" = "builtin")
+
+AC_ARG_WITH(vpnc, AC_HELP_STRING([--with-vpnc=PROGRAM],
+ [specify location of vpnc binary]), [path_vpnc=${withval}])
+
+AC_ARG_ENABLE(vpnc,
+ AC_HELP_STRING([--enable-vpnc], [enable vpnc support]),
+ [enable_vpnc=${enableval}], [enable_vpnc="no"])
+if (test "${enable_vpnc}" != "no"); then
+ if (test -z "${path_vpnc}"); then
+ AC_PATH_PROG(VPNC, [vpnc], [], $PATH:/bin:/usr/bin)
+ if (test -z "${VPNC}"); then
+ AC_MSG_ERROR(vpnc binary not found)
+ fi
+ else
+ VPNC="${path_vpnc}"
+ AC_SUBST(VPNC)
+ fi
+fi
+AM_CONDITIONAL(VPNC, test "${enable_vpnc}" != "no")
+AM_CONDITIONAL(VPNC_BUILTIN, test "${enable_vpnc}" = "builtin")
+
+AC_ARG_WITH(l2tp, AC_HELP_STRING([--with-l2tp=PROGRAM],
+ [specify location of l2tp binary]), [path_l2tp=${withval}])
+
+AC_ARG_ENABLE(l2tp,
+ AC_HELP_STRING([--enable-l2tp], [enable l2tp support]),
+ [enable_l2tp=${enableval}], [enable_l2tp="no"])
+if (test "${enable_l2tp}" != "no"); then
+ if (test -z "${path_pppd}"); then
+ AC_PATH_PROG(PPPD, [pppd], [/usr/bin/pppd], $PATH:/bin:/usr/bin)
+ else
+ PPPD="${path_pppd}"
+ AC_SUBST(PPPD)
+ fi
+ AC_CHECK_HEADERS(pppd/pppd.h, dummy=yes,
+ AC_MSG_ERROR(ppp header files are required))
+ if (test -z "${path_l2tp}"); then
+ AC_PATH_PROG(L2TP, [xl2tpd], [/usr/bin/xl2tpd], $PATH:/bin:/usr/bin)
+ else
+ L2TP="${path_l2tp}"
+ AC_SUBST(L2TP)
+ fi
+fi
+AM_CONDITIONAL(L2TP, test "${enable_l2tp}" != "no")
+AM_CONDITIONAL(L2TP_BUILTIN, test "${enable_l2tp}" = "builtin")
+
+AC_ARG_WITH(pptp, AC_HELP_STRING([--with-pptp=PROGRAM],
+ [specify location of pptp binary]), [path_pptp=${withval}])
+
+AC_ARG_ENABLE(pptp,
+ AC_HELP_STRING([--enable-pptp], [enable pptp support]),
+ [enable_pptp=${enableval}], [enable_pptp="no"])
+if (test "${enable_pptp}" != "no"); then
+ if (test -z "${path_pppd}"); then
+ AC_PATH_PROG(PPPD, [pppd], [/usr/bin/pppd], $PATH:/bin:/usr/bin)
+ else
+ PPPD="${path_pppd}"
+ AC_SUBST(PPPD)
+ fi
+ AC_CHECK_HEADERS(pppd/pppd.h, dummy=yes,
+ AC_MSG_ERROR(ppp header files are required))
+ if (test -z "${path_pptp}"); then
+ AC_PATH_PROG(PPTP, [pptp], [/usr/bin/pptp], $PATH:/bin:/usr/bin)
+ else
+ PPTP="${path_pptp}"
+ AC_SUBST(PPTP)
+ fi
+fi
+AM_CONDITIONAL(PPTP, test "${enable_pptp}" != "no")
+AM_CONDITIONAL(PPTP_BUILTIN, test "${enable_pptp}" = "builtin")
+
+AC_CHECK_HEADERS(resolv.h, dummy=yes,
+ AC_MSG_ERROR(resolver header files are required))
+AC_CHECK_LIB(resolv, ns_initparse, dummy=yes, [
+ AC_CHECK_LIB(resolv, __ns_initparse, dummy=yes,
+ AC_MSG_ERROR(resolver library support is required))
+])
+
+AC_CHECK_HEADERS([execinfo.h])
+AM_CONDITIONAL([BACKTRACE], [test "${ac_cv_header_execinfo_h}" = "yes"])