Allow build on all Linux platforms

Support also irregular mkspec names like linux-imx6-g++. We
officially only support boot2qt for embedded Linux, but that's
no reason to prevent builing on other configurations. Also,
the line between embedded and Desktop Linux is blurry.

Task-number: QTBUG-49249
Task-number: QTBUG-50259
Change-Id: If5b87a21bb226194c8340430be958d42ae80b537
Reviewed-by: Joerg Bornemann <joerg.bornemann@theqtcompany.com>

1 files changed, 30 insertions, 16 deletions

diff --git a/tools/qmake/mkspecs/features/functions.prf b/tools/qmake/mkspecs/features/functions.prf
index 2447d8372..e9d801e51 100644
--- a/tools/qmake/mkspecs/features/functions.prf
+++ b/tools/qmake/mkspecs/features/functions.prf
@@ -1,30 +1,44 @@
 defineTest(isPlatformSupported) {
-  !linux-g++*:!linux-clang:!win32-msvc2013*:!win32-msvc2015*:!macx-clang*:!boot2qt {
-    skipBuild("Qt WebEngine can currently only be built for Linux (GCC/clang), Windows (MSVC 2013 or 2015), OS X (10.9/XCode 5.1+) or Qt for Device Creation.")
-    return(false)
-  }
-  !contains(QT_CONFIG, c++11) {
-    skipBuild("C++11 support is required in order to build chromium.")
-    return(false)
-  }
-  static {
-    skipBuild("Static builds of QtWebEngine aren't supported.")
-    return(false)
-  }
-  osx {
+  linux {
+    !gcc:!clang {
+      skipBuild("Qt WebEngine on Linux requires clang or GCC.")
+      return(false)
+    }
+    gcc:!clang:!isGCCVersionSupported(): return(false)
+  } else:win32 {
+    msvc {
+      !equals(MSVC_VER, "12.0"):!equals(MSVC_VER, "14.0") {
+        skipBuild("Qt WebEngine on Windows requires MSVC 2013 or MSVC 2015.")
+        return(false)
+      }
+    } else {
+      skipBuild("Qt WebEngine on Windows requires MSVC 2013 or MSVC 2015.")
+      return(false)
+    }
+  } else:osx {
     lessThan(QMAKE_XCODE_VERSION, 5.1) {
-      skipBuild("Using xcode version $$QMAKE_XCODE_VERSION, but at least version 5.1 is required to build Qt WebEngine.")
+      skipBuild("Using XCode version $$QMAKE_XCODE_VERSION, but at least version 5.1 is required to build Qt WebEngine.")
       return(false)
     }
     # We require OS X 10.9 (darwin version 13.0.0) or newer
     darwin_major_version = $$section(QMAKE_HOST.version, ., 0, 0)
     lessThan(darwin_major_version, 13) {
-      skipBuild("OS X version 10.9 or newer is required to build Qt WebEngine.")
+      skipBuild("Qt WebEngine requires OS X version 10.9 or newer.")
       return(false)
     }
+  } else {
+    skipBuild("Unknown platform. Qt WebEngine only supports Linux, Windows, and OS X.")
+    return(false)
   }
 
-  linux-g++*:!isGCCVersionSupported(): return(false)
+  !contains(QT_CONFIG, c++11) {
+    skipBuild("C++11 support is required in order to build chromium.")
+    return(false)
+  }
+  static {
+    skipBuild("Static builds of QtWebEngine aren't supported.")
+    return(false)
+  }
   !isPythonVersionSupported(): return(false)
   return(true)
 }