cmake build: Fix sdktool default output path

The relative path that is passed to the sdktool build must be relative
from the sdktool binary to the data path. IDE_DATA_PATH is relative from
the Qt Creator binary.

Change-Id: If74d9a07cb491247861eef36ebf8406de4fdedd8
Reviewed-by: Cristian Adam <cristian.adam@qt.io>

src/tools/sdktool/CMakeLists.txt

@@ -40,9 +40,11 @@ endif()
 
 set(UtilsSourcesDir "../../libs/utils")
 
+file(RELATIVE_PATH DATA_PATH "/${IDE_LIBEXEC_PATH}" "/${IDE_DATA_PATH}")
+
 add_qtc_executable(sdktool
   ${DESTINATION}
-  DEFINES DATA_PATH=\"${IDE_DATA_PATH}\"
+  DEFINES DATA_PATH=\"${DATA_PATH}\"
   DEPENDS Qt5::Core
   INCLUDES
     "${UtilsSourcesDir}/../"

src/tools/sdktool/main.cpp

@@ -79,6 +79,14 @@ void printHelp(const std::vector<std::unique_ptr<Operation>> &operations)
     std::cout << "    --help|-h                Print this help text" << std::endl;
     std::cout << "    --sdkpath=PATH|-s PATH   Set the path to the SDK files" << std::endl << std::endl;
 
+    std::cout << "Default sdkpath is \""
+              << qPrintable(QDir::cleanPath(
+                     Utils::FilePath::fromString(QCoreApplication::applicationDirPath())
+                         .pathAppended(DATA_PATH)
+                         .toUserOutput()))
+              << "\"" << std::endl
+              << std::endl;
+
     std::cout << "OPERATION:" << std::endl;
     std::cout << "    One of:" << std::endl;
     for (const std::unique_ptr<Operation> &o : operations)