wxutil library is now buildable with CMake

find_package(wxWidgets) is used to locate wxWidgets itself; also added the FTGL
dependency and bumped cmake_minimum_required to 3.12 (for
add_compile_definitions) and C++ version to C++14 (for make_unique).

CMakeLists.txt

@@ -1,10 +1,10 @@
-cmake_minimum_required(VERSION 3.10)
+cmake_minimum_required(VERSION 3.12)
 
 # Project name and version
 project(darkradiant VERSION 2.9.2)
 
 # C++ standard
-set(CMAKE_CXX_STANDARD 11)
+set(CMAKE_CXX_STANDARD 14)
 set(CMAKE_CXX_STANDARD_REQUIRED True)
 
 # Build shared libraries by default
@@ -14,11 +14,19 @@ option(BUILD_SHARED_LIBS "Build shared libraries" ON)
 include(FindPkgConfig)
 pkg_check_modules(XML libxml-2.0 REQUIRED)
 pkg_check_modules(SIGC sigc++-2.0 REQUIRED)
+pkg_check_modules(FTGL ftgl REQUIRED)
+
+# Locate wxWidgets
+find_package(wxWidgets REQUIRED COMPONENTS base)
+message("Using wxWidgets file ${wxWidgets_USE_FILE}")
+include(${wxWidgets_USE_FILE})
 
 # Global includes and flags
 include_directories(libs libs/libfmt include)
+add_compile_definitions(POSIX WXINTL_NO_GETTEXT_MACRO)
 
 # Subdirectories
 add_subdirectory(libs/math)
 add_subdirectory(libs/xmlutil)
 add_subdirectory(libs/scene)
+add_subdirectory(libs/wxutil)

libs/wxutil/CMakeLists.txt

@@ -0,0 +1,22 @@
+add_library(wxutil
+            ConsoleView.cpp
+            DirChooser.cpp
+            EntityClassChooser.cpp
+            FileChooser.cpp
+            FreezePointer.cpp
+            GLFont.cpp
+            GLWidget.cpp
+            KeyValueTable.cpp
+            ModalProgressDialog.cpp
+            MouseToolHandler.cpp
+            PanedPosition.cpp
+            PathEntry.cpp
+            SerialisableWidgets.cpp
+            SourceView.cpp
+            Splitter.cpp
+            TreeModel.cpp
+            TreeModelFilter.cpp
+            TreeView.cpp
+            VFSTreePopulator.cpp
+            WindowPosition.cpp)
+target_compile_options(wxutil PUBLIC ${SIGC_CFLAGS} ${FTGL_CFLAGS})