MAINT-2389: Change viewer to Boost package without ucontext.h.

In autobuild.xml, specify today's build of the Boost package that includes the
Boost.Context library, and whose boost::dcoroutines library uses Boost.Context
exclusively instead of its previous context-switching underpinnings (source of
the ucontext.h dependency).
Add BOOST_CONTEXT_LIBRARY to Boost.cmake and Copy3rdPartyLibs.cmake. Link it
with the viewer and with the lllogin.cpp test executable.
Track new Boost package convention that our (early, unofficial) Boost.Coroutine
library is now accessed as boost/dcoroutine/etc.h and boost::dcoroutines::etc.
Remove #include <boost/coroutine/coroutine.hpp> from
llviewerprecompiledheaders.h and lllogin.cpp: old rule that Boost.Coroutine
header must be #included before anything else that might use ucontext.h is
gone now that we no longer depend on ucontext.h. In fact remove
-D_XOPEN_SOURCE in 00-Common.cmake because that was inserted specifically to
work around a known problem with the ucontext.h facilities.

1 files changed, 8 insertions, 8 deletions

diff --git a/indra/llcommon/lleventcoro.h b/indra/llcommon/lleventcoro.h
index 88a5e6ec74..a42af63b65 100644
--- a/indra/llcommon/lleventcoro.h
+++ b/indra/llcommon/lleventcoro.h
@@ -29,8 +29,8 @@
 #if ! defined(LL_LLEVENTCORO_H)
 #define LL_LLEVENTCORO_H
 
-#include <boost/coroutine/coroutine.hpp>
-#include <boost/coroutine/future.hpp>
+#include <boost/dcoroutine/coroutine.hpp>
+#include <boost/dcoroutine/future.hpp>
 #include <boost/optional.hpp>
 #include <string>
 #include <stdexcept>
@@ -206,13 +206,13 @@ LLSD postAndWait(SELF& self, const LLSD& event, const LLEventPumpOrPumpName& req
                  const LLEventPumpOrPumpName& replyPump, const LLSD& replyPumpNamePath=LLSD())
 {
     // declare the future
-    boost::coroutines::future<LLSD> future(self);
+    boost::dcoroutines::future<LLSD> future(self);
     // make a callback that will assign a value to the future, and listen on
     // the specified LLEventPump with that callback
     std::string listenerName(LLEventDetail::listenerNameForCoro(self));
     LLTempBoundListener connection(
         replyPump.getPump().listen(listenerName,
-                                   voidlistener(boost::coroutines::make_callback(future))));
+                                   voidlistener(boost::dcoroutines::make_callback(future))));
     // skip the "post" part if requestPump is default-constructed
     if (requestPump)
     {
@@ -257,7 +257,7 @@ namespace LLEventDetail
      * This helper is specifically for the two-pump version of waitForEventOn().
      * We use a single future object, but we want to listen on two pumps with it.
      * Since we must still adapt from (the callable constructed by)
-     * boost::coroutines::make_callback() (void return) to provide an event
+     * boost::dcoroutines::make_callback() (void return) to provide an event
      * listener (bool return), we've adapted LLVoidListener for the purpose. The
      * basic idea is that we construct a distinct instance of WaitForEventOnHelper
      * -- binding different instance data -- for each of the pumps. Then, when a
@@ -331,16 +331,16 @@ LLEventWithID postAndWait2(SELF& self, const LLSD& event,
                            const LLSD& replyPump1NamePath=LLSD())
 {
     // declare the future
-    boost::coroutines::future<LLEventWithID> future(self);
+    boost::dcoroutines::future<LLEventWithID> future(self);
     // either callback will assign a value to this future; listen on
     // each specified LLEventPump with a callback
     std::string name(LLEventDetail::listenerNameForCoro(self));
     LLTempBoundListener connection0(
         replyPump0.getPump().listen(name + "a",
-                               LLEventDetail::wfeoh(boost::coroutines::make_callback(future), 0)));
+                               LLEventDetail::wfeoh(boost::dcoroutines::make_callback(future), 0)));
     LLTempBoundListener connection1(
         replyPump1.getPump().listen(name + "b",
-                               LLEventDetail::wfeoh(boost::coroutines::make_callback(future), 1)));
+                               LLEventDetail::wfeoh(boost::dcoroutines::make_callback(future), 1)));
     // skip the "post" part if requestPump is default-constructed
     if (requestPump)
     {