+# If threads aren't disabled, check how possible they are
+unless ($disabled{threads}) {
+ if ($auto_threads) {
+ # Enabled by default, disable it forcibly if unavailable
+ if ($target{thread_scheme} eq "(unknown)") {
+ $disabled{threads} = "unavailable";
+ }
+ } else {
+ # The user chose to enable threads explicitely, let's see
+ # if there's a chance that's possible
+ if ($target{thread_scheme} eq "(unknown)") {
+ # If the user asked for "threads" and we don't have internal
+ # knowledge how to do it, [s]he is expected to provide any
+ # system-dependent compiler options that are necessary. We
+ # can't truly check that the given options are correct, but
+ # we expect the user to know what [s]He is doing.
+ if ($no_user_cflags && $no_user_defines) {
+ die "You asked for multi-threading support, but didn't\n"
+ ,"provide any system-specific compiler options\n";
+ }
+ }
+ }
+}
+
+# If threads still aren't disabled, add a C macro to ensure the source
+# code knows about it. Any other flag is taken care of by the configs.
+unless($disabled{threads}) {
+ foreach (("defines", "openssl_thread_defines")) {
+ push @{$config{$_}}, "OPENSSL_THREADS";
+ }
+}
+