add basic cmake support

CMakeLists.txt

@@ -0,0 +1,65 @@
+cmake_minimum_required(VERSION 3.2)
+cmake_policy(VERSION 3.2)
+
+project(qBittorrent VERSION 3.4.0.0)
+
+set(VER_MAJOR ${qBittorrent_VERSION_MAJOR})
+set(VER_MINOR ${qBittorrent_VERSION_MINOR})
+set(VER_BUGFIX ${qBittorrent_VERSION_PATCH})
+set(VER_BUILD ${qBittorrent_VERSION_TWEAK})
+set(VER_STATUS "alpha") # Should be empty for stable releases!
+
+# Don't touch the rest part
+set(PROJECT_VERSION "${VER_MAJOR}.${VER_MINOR}.${VER_BUGFIX}")
+
+if (NOT VER_BUILD EQUAL 0)
+    set(PROJECT_VERSION "${PROJECT_VERSION}.${VER_BUILD}")
+endif()
+
+set(PROJECT_VERSION "${PROJECT_VERSION}${VER_STATUS}")
+
+add_definitions(-DVERSION_MAJOR=${VER_MAJOR})
+add_definitions(-DVERSION_MINOR=${VER_MINOR})
+add_definitions(-DVERSION_BUGFIX=${VER_BUGFIX})
+add_definitions(-DVERSION_BUILD=${VER_BUILD})
+
+# os2 {
+#     DEFINES += VERSION=\'\"v$${PROJECT_VERSION}\"\'
+# } else {
+add_definitions(-DVERSION="v${PROJECT_VERSION}")
+# }
+list(APPEND CMAKE_MODULE_PATH ${qBittorrent_SOURCE_DIR}/cmake/Modules)
+
+# set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Og")
+if (UNIX AND NOT APPLE)
+    include(GNUInstallDirs)
+endif (UNIX AND NOT APPLE)
+
+if(WIN32)
+    include(winconf)
+endif(WIN32)
+
+# we need options here, because they are used not only in "src" subdir, but in the "dist" dir too
+include(CMakeDependentOption)
+
+option(QT5 "Compile using Qt5" ON)
+option(SYSTEM_QTSINGLEAPPLICATION
+    "Use the system qtsingleapplication library or shipped one otherwise")
+cmake_dependent_option(SYSTEM_QJSON
+    "Use the shipped qjson library or the system one (Qt4 only)" OFF "NOT QT5" OFF)
+
+option(GUI "Allows to disable GUI for headless running. Disables QtDBus and the GeoIP Database" ON)
+
+option(WEBUI "Allows to disable the WebUI." ON)
+
+if (WIN32)
+    option(STACKTRACE_WIN "")
+else (WIN32)
+    cmake_dependent_option(SYSTEMD "Install the systemd service file (headless only)" OFF
+        "NOT GUI" OFF)
+    cmake_dependent_option(DBUS "Enable use of QtDBus (GUI only)" ON "GUI" OFF)
+endif(WIN32)
+
+
+add_subdirectory(src)
+add_subdirectory(dist)