Merge remote-tracking branch 'origin/5.9' into dev

Conflicts:
	src/corelib/tools/qbytearray.h
	src/corelib/tools/qdatetime.h
	src/corelib/tools/qstring.h
	src/corelib/tools/qversionnumber.h
	src/plugins/platforms/android/qandroidplatformintegration.cpp
	tests/auto/corelib/tools/qhashfunctions/tst_qhashfunctions.cpp

Change-Id: Iefd92a435e687a76cd593099e40d9a9620a1454d

7 files changed, 40 insertions, 15 deletions

diff --git a/mkspecs/common/clang-mac.conf b/mkspecs/common/clang-mac.conf
index 274fd73d00..cbae2e6262 100644
--- a/mkspecs/common/clang-mac.conf
+++ b/mkspecs/common/clang-mac.conf
@@ -9,3 +9,5 @@ QMAKE_XCODE_GCC_VERSION = com.apple.compilers.llvm.clang.1_0
 QMAKE_CXXFLAGS += -stdlib=libc++
 QMAKE_LFLAGS   += -stdlib=libc++
 QMAKE_AR_LTCG  = libtool -static -o
+
+QMAKE_CFLAGS_APPLICATION_EXTENSION  = -fapplication-extension
diff --git a/mkspecs/common/msvc-version.conf b/mkspecs/common/msvc-version.conf
index 945767ce8c..29f96b7abf 100644
--- a/mkspecs/common/msvc-version.conf
+++ b/mkspecs/common/msvc-version.conf
@@ -47,7 +47,7 @@ greaterThan(QMAKE_MSC_VER, 1799) {
     MSVC_VER            = 12.0
     COMPAT_MKSPEC       = win32-msvc2013
     QMAKE_CFLAGS       += -FS
-    QMAKE_CXXFLAGS     += -FS
+    QMAKE_CXXFLAGS     += -FS -Zc:rvalueCast -Zc:inline
 
     QMAKE_CFLAGS_F16C   = -arch:AVX
 
@@ -80,6 +80,7 @@ greaterThan(QMAKE_MSC_VER, 1909) {
     # Visual Studio 2017 (15.0) / Visual C++ 19.10 and up
     MSVC_VER            = 15.0
     COMPAT_MKSPEC       = win32-msvc2017
+    QMAKE_CXXFLAGS     += -Zc:referenceBinding
 }
 
 greaterThan(QMAKE_MSC_VER, 1910) {
diff --git a/mkspecs/features/android/resolve_target.prf b/mkspecs/features/android/resolve_target.prf
new file mode 100644
index 0000000000..2bbeffcfd0
--- /dev/null
+++ b/mkspecs/features/android/resolve_target.prf
@@ -0,0 +1,2 @@
+load(android)
+load(resolve_target)
diff --git a/mkspecs/features/link_ltcg.prf b/mkspecs/features/link_ltcg.prf
index 03d0e813b6..4da061e1fe 100644
--- a/mkspecs/features/link_ltcg.prf
+++ b/mkspecs/features/link_ltcg.prf
@@ -1,6 +1,8 @@
 gcc {
     # on Windows, MinGW's support for -flto=N is broken
-    !clang:!intel_icc:!equals(QMAKE_HOST.os, Windows):greaterThan(QMAKE_HOST.cpu_count, 1) {
+    intel_icc {
+        QMAKE_LFLAGS_LTCG ~= s/-ipo/-ipo=$$QMAKE_HOST.cpu_count/
+    } else: !clang:!equals(QMAKE_HOST.os, Windows):greaterThan(QMAKE_HOST.cpu_count, 1) {
         # Override LTO number of jobs
         QMAKE_LFLAGS_LTCG ~= s/^-flto$/-flto=$$QMAKE_HOST.cpu_count/
     }
diff --git a/mkspecs/features/mac/default_post.prf b/mkspecs/features/mac/default_post.prf
index cb8543254a..2bba73d795 100644
--- a/mkspecs/features/mac/default_post.prf
+++ b/mkspecs/features/mac/default_post.prf
@@ -40,10 +40,10 @@ qt {
 !bitcode: QMAKE_LFLAGS += $$QMAKE_LFLAGS_HEADERPAD
 
 app_extension_api_only {
-    QMAKE_CFLAGS              += -fapplication-extension
-    QMAKE_CXXFLAGS            += -fapplication-extension
-    QMAKE_CXXFLAGS_PRECOMPILE += -fapplication-extension
-    QMAKE_LFLAGS              += -fapplication-extension
+    QMAKE_CFLAGS              += $$QMAKE_CFLAGS_APPLICATION_EXTENSION
+    QMAKE_CXXFLAGS            += $$QMAKE_CFLAGS_APPLICATION_EXTENSION
+    QMAKE_CXXFLAGS_PRECOMPILE += $$QMAKE_CFLAGS_APPLICATION_EXTENSION
+    QMAKE_LFLAGS              += $$QMAKE_CFLAGS_APPLICATION_EXTENSION
 }
 
 macx-xcode {
@@ -157,13 +157,23 @@ macx-xcode {
     # Enable precompiled headers for multiple architectures
     QMAKE_CFLAGS_USE_PRECOMPILE =
     for (arch, VALID_ARCHS) {
+        icc_pch_style: \
+            use_flag = "-pch-use "
+        else: \
+            use_flag = -include
+
         QMAKE_CFLAGS_USE_PRECOMPILE += \
             -Xarch_$${arch} \
-            -include${QMAKE_PCH_OUTPUT_$${arch}}
+            $${use_flag}${QMAKE_PCH_OUTPUT_$${arch}}
+    }
+    icc_pch_style {
+        QMAKE_CXXFLAGS_USE_PRECOMPILE = $$QMAKE_CFLAGS_USE_PRECOMPILE -include ${QMAKE_PCH_INPUT}
+        QMAKE_CFLAGS_USE_PRECOMPILE =
+    } else {
+        QMAKE_CXXFLAGS_USE_PRECOMPILE = $$QMAKE_CFLAGS_USE_PRECOMPILE
+        QMAKE_OBJCFLAGS_USE_PRECOMPILE = $$QMAKE_CFLAGS_USE_PRECOMPILE
+        QMAKE_OBJCXXFLAGS_USE_PRECOMPILE = $$QMAKE_CFLAGS_USE_PRECOMPILE
     }
-    QMAKE_CXXFLAGS_USE_PRECOMPILE = $$QMAKE_CFLAGS_USE_PRECOMPILE
-    QMAKE_OBJCFLAGS_USE_PRECOMPILE = $$QMAKE_CFLAGS_USE_PRECOMPILE
-    QMAKE_OBJCXXFLAGS_USE_PRECOMPILE = $$QMAKE_CFLAGS_USE_PRECOMPILE
 
     QMAKE_PCH_OUTPUT_EXT = _${QMAKE_PCH_ARCH}$${QMAKE_PCH_OUTPUT_EXT}
 }
diff --git a/mkspecs/features/qt_module_headers.prf b/mkspecs/features/qt_module_headers.prf
index 4a4a41850d..a196ad4505 100644
--- a/mkspecs/features/qt_module_headers.prf
+++ b/mkspecs/features/qt_module_headers.prf
@@ -158,12 +158,18 @@ MODULE_MASTER_DEPS_HEADER = $$MODULE_BASE_OUTDIR/include/$$MODULE_INCNAME/$${MOD
 }
 SYNCQT.HEADER_FILES += $$MODULE_MASTER_DEPS_HEADER
 
-# Automatically enable precompiled headers for Qt modules,
-# except for Gcc/Windows: Larger precompiled headers crash cc1plus.exe
-# (e.g. with i686-4.8.2-release-posix-dwarf-rt_v3-rev3)
-!if(gcc:equals(QMAKE_HOST.os, Windows)):!equals(TEMPLATE, aux) {
-    isEmpty(PRECOMPILED_HEADER): PRECOMPILED_HEADER = $$MODULE_MASTER_DEPS_HEADER
+# Automatically enable precompiled headers for Qt modules with more than 2 sources
+combined_SOURCES = $$SOURCES $$OBJECTIVE_SOURCES
+count(combined_SOURCES, 2, >) {
+    # except for Gcc/Windows: Larger precompiled headers crash cc1plus.exe
+    # (e.g. with i686-4.8.2-release-posix-dwarf-rt_v3-rev3)
+    !if(gcc:equals(QMAKE_HOST.os, Windows)):!equals(TEMPLATE, aux) {
+        !defined(PRECOMPILED_HEADER, "var"): PRECOMPILED_HEADER = $$MODULE_MASTER_DEPS_HEADER
+    }
+} else {
+    CONFIG -= precompile_header
 }
+unset(combined_SOURCES)
 
 headersclean:!internal_module {
     # Make sure that the header compiles with our strict options
diff --git a/mkspecs/macx-icc/qmake.conf b/mkspecs/macx-icc/qmake.conf
index 8d5c1d2418..feeaa08113 100644
--- a/mkspecs/macx-icc/qmake.conf
+++ b/mkspecs/macx-icc/qmake.conf
@@ -96,6 +96,8 @@ QMAKE_CXXFLAGS_HIDESYMS += $$QMAKE_CFLAGS_HIDESYMS -fvisibility-inlines-hidden
 
 QMAKE_MACOSX_DEPLOYMENT_TARGET = 10.10
 
+QMAKE_APPLE_DEVICE_ARCHS = x86_64
+
 include(../common/macx.conf)
 
 load(qt_config)