configure: Make PEAP depend on microsoft extensions (#540)

Since our only PEAP mechanism is MS-CHAP v2, the compile fails if we
enable PEAP without MS extensions.  Therefore, for now make PEAP
depend on MS extensions, so if MS extensions are disabled, PEAP is
automatically disabled.

Signed-off-by: Paul Mackerras <[email protected]>

configure.ac

@@ -130,9 +130,9 @@ AM_COND_IF([PPP_WITH_CBCP],
     AC_DEFINE([PPP_WITH_CBCP], 1, [Have Callback Protocol support]))
 
 #
-# Disable Microsoft extensions will remove CHAP and MPPE support
+# Disable Microsoft extensions will remove CHAP, MPPE and PEAP support
 AC_ARG_ENABLE([microsoft-extensions],
-    AS_HELP_STRING([--disable-microsoft-extensions], [Disable Microsoft CHAP / MPPE extensions]))
+    AS_HELP_STRING([--disable-microsoft-extensions], [Disable Microsoft CHAP / MPPE / PEAP extensions]))
 
 AM_CONDITIONAL(PPP_WITH_CHAPMS, test "x${enable_microsoft_extensions}" != "xno")
 AM_COND_IF([PPP_WITH_CHAPMS],
@@ -193,9 +193,9 @@ AM_CONDITIONAL(PPP_WITH_EAPTLS, test "x${enable_eaptls}" != "xno")
 # Disable PEAP support
 AC_ARG_ENABLE([peap],
     AS_HELP_STRING([--disable-peap], [Disable PEAP authentication support]))
-AS_IF([test "x${enable_peap}" != "xno"],
+AS_IF([test "x${enable_peap}" != "xno" && test "x${enable_microsoft_extensions}" != "xno"],
     AC_DEFINE([PPP_WITH_PEAP], 1, [Have PEAP authentication support]))
-AM_CONDITIONAL([PPP_WITH_PEAP], test "x${enable_peap}" != "xno")
+AM_CONDITIONAL([PPP_WITH_PEAP], test "x${enable_peap}" != "xno" && test "x${enable_microsoft_extensions}" != "xno")
 
 #
 # Disable OpenSSL engine support
@@ -359,6 +359,5 @@ Features enabled
     CBCP.................: ${enable_cbcp:-no}
     IPV6CP...............: ${enable_ipv6cp:-yes}
     EAP-TLS..............: ${enable_eaptls:-yes}
-    PEAP.................: ${enable_peap:-yes}
     systemd notifications: ${enable_systemd:-no}
 "