CMake: Compare canonical paths when checking source directory

Compare the CMAKE_HOME_DIRECTORY to the canonical project paths during
cmake project import. CMake makes sure to store the canonical path
there.

Change-Id: I4ae3ad1f8fab66a50ba98d4266c78cdb4d21f2ea
Reviewed-by: Tim Jenssen <tim.jenssen@qt.io>

src/plugins/cmakeprojectmanager/cmakeprojectimporter.cpp

@@ -250,9 +250,10 @@ QList<void *> CMakeProjectImporter::examineDirectory(const Utils::FileName &impo
     }
     const auto homeDir
             = Utils::FileName::fromUserInput(QString::fromUtf8(CMakeConfigItem::valueOf("CMAKE_HOME_DIRECTORY", config)));
-    if (homeDir != projectDirectory()) {
+    const Utils::FileName canonicalProjectDirectory = Utils::FileUtils::canonicalPath(projectDirectory());
+    if (homeDir != canonicalProjectDirectory) {
         qCDebug(cmInputLog()) << "Wrong source directory:" << homeDir.toUserOutput()
-                              << "expected:" << projectDirectory().toUserOutput();
+                              << "expected:" << canonicalProjectDirectory.toUserOutput();
         return { };
     }