6 files changed, 11 insertions, 9 deletions
diff --git a/mkspecs/features/file_copies.prf b/mkspecs/features/file_copies.prf
index 6df294212c..4ebf41c78f 100644
--- a/mkspecs/features/file_copies.prf
+++ b/mkspecs/features/file_copies.prf
@@ -1,8 +1,7 @@
 isEmpty(COPIES): return()
 contains(TEMPLATE, .*subdirs): error("COPIES does not work with TEMPLATE=subdirs")
 
-build_pass:build_all: \
-  debug_and_release:debug {
+build_pass:build_all:!isEqual(BUILD_PASS, $$first(BUILDS)) {
     # Avoid that multiple build passes race with each other.
     # This will fail to copy anything if the user explicitly invokes
     # only the non-primary build. This is unfixable, as at qmake time
diff --git a/mkspecs/features/qt.prf b/mkspecs/features/qt.prf
index 10b20be0b0..8d96d18d06 100644
--- a/mkspecs/features/qt.prf
+++ b/mkspecs/features/qt.prf
@@ -156,7 +156,7 @@ for(ever) {
     !isEmpty(var_sfx): break()
     var_sfx = _PRIVATE
 }
-!isEmpty(using_privates):!no_private_qt_headers_warning:if(!debug_and_release|!build_pass) {
+!isEmpty(using_privates):!no_private_qt_headers_warning:!build_pass {
     message("This project is using private headers and will therefore be tied to this specific Qt module build version.")
     message("Running this project against other versions of the Qt modules may crash at any arbitrary point.")
     message("This is not a bug, but a result of using Qt internals. You have been warned!")
diff --git a/mkspecs/features/qt_common.prf b/mkspecs/features/qt_common.prf
index 00a6aef51f..e50fdb767b 100644
--- a/mkspecs/features/qt_common.prf
+++ b/mkspecs/features/qt_common.prf
@@ -102,9 +102,9 @@ warnings_are_errors:warning_clean {
             # Work-around for bug https://code.google.com/p/android/issues/detail?id=58135
             android: QMAKE_CXXFLAGS_WARN_ON += -Wno-error=literal-suffix
         }
-    } else:msvc {
-        # enable for MSVC 2012, MSVC 2013
-        equals(MSVC_VER, "11.0")|equals(MSVC_VER, "12.0"): QMAKE_CXXFLAGS_WARN_ON += -WX
+    } else:msvc:!intel_icl {
+        # enable for MSVC 2012, MSVC 2013, MSVC 2015
+        contains(MSVC_VER, "1[124].0"): QMAKE_CXXFLAGS_WARN_ON += -WX
     }
     unset(ver)
 }
diff --git a/mkspecs/features/qt_docs_targets.prf b/mkspecs/features/qt_docs_targets.prf
index 1f9e2b0b47..9e96432462 100644
--- a/mkspecs/features/qt_docs_targets.prf
+++ b/mkspecs/features/qt_docs_targets.prf
@@ -30,7 +30,7 @@ contains(TEMPLATE, subdirs) {
     for(inst, DOC_TARGETS): \
         prepareRecursiveTarget($$inst)
 } else {
-    debug_and_release:!build_pass {
+    !isEmpty(BUILDS):!build_pass {
         sub = $$first(BUILDS)
         for(inst, DOC_TARGETS) {
             $${inst}.CONFIG = recursive
diff --git a/mkspecs/features/qt_functions.prf b/mkspecs/features/qt_functions.prf
index 2ed1cd51de..6dd4a36b5e 100644
--- a/mkspecs/features/qt_functions.prf
+++ b/mkspecs/features/qt_functions.prf
@@ -259,7 +259,10 @@ defineReplace(pkgConfigExecutable) {
 }
 
 defineTest(packagesExist) {
-    contains(QT_CONFIG, no-pkg-config):return(false)
+    contains(QT_CONFIG, no-pkg-config) {
+        warning("pkg-config disabled, can't check package existence")
+        return(false)
+    }
 
     # this can't be done in global scope here because qt_functions is loaded
     # before the .pro is parsed, so if the .pro set PKG_CONFIG, we wouldn't know it
diff --git a/mkspecs/features/resources.prf b/mkspecs/features/resources.prf
index ec70f49ce1..21147e4a42 100644
--- a/mkspecs/features/resources.prf
+++ b/mkspecs/features/resources.prf
@@ -35,7 +35,7 @@ for(resource, RESOURCES) {
 
     resource_file = $$RCC_DIR/qmake_$${resource}.qrc
 
-    !debug_and_release|build_pass {
+    isEmpty(BUILDS)|build_pass {
         # Collection of files, generate qrc file
         prefix = $$eval($${resource}.prefix)
         isEmpty(prefix): \