Fix build without features.poll_{ppoll,pollts,poll,select}

Change-Id: Idc87521cdf713682ed07eb28b3d3f2f3ca0675ce
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>

mkspecs/features/qt_configure.prf

@@ -1905,8 +1905,11 @@ defineTest(qtConfCreateReportRecurse) {
         entry = $${1}.$$n
         subKeys = $$eval($${entry}._KEYS_)
         contains(subKeys, condition) {
-            condition = $$eval($${entry}.condition)
+            r = true
-            r = $$qtConfEvaluate($$condition)
+            for (condition, $$qtConfScalarOrList($${entry}.condition)) {
+                r = $$qtConfEvaluate($$condition)
+                !$$r: break()
+            }
             !qtConfIsBoolean($$r): \
                 error("Evaluation of condition '$$condition' in report entry $${entry} yielded non-boolean value '$$r'.")
             !$$r: next()

src/corelib/configure.json

@@ -1116,6 +1116,17 @@ You need to use libdouble-conversion for double/string conversion."
             "message": "detected a std::atomic implementation that fails for function pointers.
 Please apply the patch corresponding to your Standard Library vendor, found in
   qtbase/config.tests/atomicfptr"
+        },
+        {
+            "type": "error",
+            "condition": [
+                "config.unix || config.integrity",
+                "!features.poll_ppoll",
+                "!features.poll_pollts",
+                "!features.poll_poll",
+                "!features.poll_select"
+            ],
+            "message": "Qt requires poll(), ppoll(), poll_ts() or select() on this platform"
         }
     ],
 

src/corelib/kernel/qcore_unix.cpp

@@ -132,8 +132,10 @@ static inline int qt_ppoll(struct pollfd *fds, nfds_t nfds, const struct timespe
     return ::ppoll(fds, nfds, timeout_ts, nullptr);
 #elif QT_CONFIG(poll_poll)
     return ::poll(fds, nfds, timespecToMillisecs(timeout_ts));
-#else
+#elif QT_CONFIG(poll_select)
     return qt_poll(fds, nfds, timeout_ts);
+#else
+    // configure.json reports an error when everything is not available
 #endif
 }