rewrite makespec verification with qmake based system

cleaner, and covers windows as well.

Change-Id: I0e884909a3f49610fab750ba1ef6112f43e5d5d1
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Reviewed-by: Laszlo Agocs <laszlo.agocs@qt.io>

config.tests/common/verifyspec/verifyspec.cpp

@@ -0,0 +1 @@
+int main(int, char **) {}

config.tests/common/verifyspec/verifyspec.pro

@@ -0,0 +1 @@
+SOURCES = verifyspec.cpp

configure

@@ -398,10 +398,7 @@ BUILD_ON_MAC=no
 if [ -d /System/Library/Frameworks/Carbon.framework ]; then
     BUILD_ON_MAC=yes
 fi
-DEV_NULL=/dev/null
 if [ "$OSTYPE" = "msys" ]; then
-    DEV_NULL=/tmp/empty-file
-    echo "" > $DEV_NULL
     relpath=`(cd "$relpath"; pwd -W)`
     outpath=`pwd -W`
 fi
@@ -1863,20 +1860,6 @@ else
     HOST_VARS_FILE="$HOST_VARS_OUTFILE"
 fi
 
-#-------------------------------------------------------------------------------
-# Verify makespec
-#-------------------------------------------------------------------------------
-QMAKE_OUTPUT=`"$CFG_QMAKE_PATH" -qtconf "$QTCONFFILE" -E -nocache -spec "$XQMAKESPEC" "QT=" $DEV_NULL 2>&1`
-if [ $? != "0" ]; then
-    echo "Failed to process makespec for platform '$XPLATFORM'"
-    if [ "$OPT_VERBOSE" = "yes" ]; then
-        echo "$QMAKE_OUTPUT"
-    else
-        echo "Turn on verbose messaging (-v) to see the final report."
-    fi
-    exit 101
-fi
-
 #-------------------------------------------------------------------------------
 # run configure tests
 #-------------------------------------------------------------------------------

configure.json

@@ -785,7 +785,8 @@
 
     "testTypeDependencies": {
         "linkerSupportsFlag": [ "use_gold_linker" ],
-        "compile": [ "shared", "use_gold_linker", "compiler-flags", "gcc-sysroot", "qmakeargs" ],
+        "verifySpec": [ "shared", "use_gold_linker", "compiler-flags", "gcc-sysroot", "qmakeargs" ],
+        "compile": [ "verifyspec" ],
         "detectPkgConfig": [ "cross_compile" ],
         "library": [ "pkg-config" ],
         "getPkgConfigVariable": [ "pkg-config" ],
@@ -800,6 +801,11 @@
     },
 
     "tests": {
+        "verifyspec": {
+            "description": "valid makespec",
+            "type": "verifySpec",
+            "test": "common/verifyspec"
+        },
         "architecture": {
             "description": "target architecture",
             "type": "architecture",
@@ -1301,6 +1307,10 @@
                 "pkgConfig"
             ]
         },
+        "verifyspec": {
+            "description": "Have valid makespec",
+            "condition": "tests.verifyspec"
+        },
 
         "developer-build": {
             "description": "Developer build",

mkspecs/features/qt_configure.prf

@@ -684,6 +684,13 @@ defineTest(qtConfTest_compile) {
     return(false)
 }
 
+defineTest(qtConfTest_verifySpec) {
+    qtConfTest_compile($$1): return(true)
+    qtConfAddError("Cannot compile a minimal program. The toolchain or QMakeSpec is broken.", log)
+    qtConfPrintReport()
+    error()
+}
+
 defineTest(qtConfTest_files) {
     for(i, $${1}.files._KEYS_) {
         f = $$eval($${1}.files.$${i})