Cannot compile wxWidgets Hello World

So, I was trying to compile hello world example provided by wxWidgets but was unsuccessful in doing so. I will explain what I have done step by step to the current point where I am stuck.

Compiling wxWidgets

First of all, my compiler of choice is MinGw-w64, and since wxWidgets advise to build their library from source (downloaded from wxWidgets download), I decided to do so using CMake.
I created a directory called cmake inside the root directory of wxWidgets (in my case: C:\C++\wxWidgets-3.1.3). Also I created bin directory for storing the compiled binaries.
I then navigated to the cmake directory and run the following CMake configuration command:
```
$ cmake -G "MinGW Makefiles" .. -D "wxBUILD_SHARED=OFF" -D "wxBUILD_MONOLITHIC=OFF" -D "CMAKE_BUILD_TYPE=debug" -D "CMAKE_C_COMPILER=gcc.exe" -D "CMAKE_CXX_COMPILER=g++.exe"
```
then I started the build by using the following command:
```
$ cmake --build . --target all
```
The resulting .a files (static library files) were placed in the bin directory.
I repeated the step 3 with the -D "CMAKE_BUILD_TYPE=release" parameter.
The generated lib\gcc_x64_lib\mswu and lib\gcc_x64_lib\mswud directories into the include directory for the convenience (as they contain setup.h header file).

As the result my C:\C++\wxWidgets-3.1.3\bin directory contains following files:

libwxexpat.a   libwxpngd.a        libwxtiff.a   wxbase31u_net.a   wxmsw31u_adv.a   wxmsw31u_media.a     wxmsw31u_stc.a      wxmsw31ud_core.a      wxmsw31ud_qa.a        wxmsw31ud_xrc.a
libwxexpatd.a  libwxregexu.a      libwxtiffd.a  wxbase31u_xml.a   wxmsw31u_aui.a   wxmsw31u_propgrid.a  wxmsw31u_webview.a  wxmsw31ud_gl.a        wxmsw31ud_ribbon.a    wxrc.exe*
libwxjpeg.a    libwxregexud.a     libwxzlib.a   wxbase31ud.a      wxmsw31u_core.a  wxmsw31u_qa.a        wxmsw31u_xrc.a      wxmsw31ud_html.a      wxmsw31ud_richtext.a
libwxjpegd.a   libwxscintilla.a   libwxzlibd.a  wxbase31ud_net.a  wxmsw31u_gl.a    wxmsw31u_ribbon.a    wxmsw31ud_adv.a     wxmsw31ud_media.a     wxmsw31ud_stc.a
libwxpng.a     libwxscintillad.a  wxbase31u.a   wxbase31ud_xml.a  wxmsw31u_html.a  wxmsw31u_richtext.a  wxmsw31ud_aui.a     wxmsw31ud_propgrid.a  wxmsw31ud_webview.a

Creating Hello World project

I created simple wxWidgets hello world project with the following file structure:

app
|   build
|   headers
|   sources
|   |    main.cpp
|   CMakeLists.txt

The contents of main.cpp:

// wxWidgets "Hello World" Program
// For compilers that support precompilation, includes "wx/wx.h".
#include <wx/wxprec.h>

#ifndef WX_PRECOMP
    #include <wx/wx.h>
#endif

class MyApp : public wxApp {
public:
    virtual bool OnInit();
};

class MyFrame : public wxFrame {
public:
    MyFrame();

private:
    void OnHello(wxCommandEvent& event);
    void OnExit(wxCommandEvent& event);
    void OnAbout(wxCommandEvent& event);
};

enum {
    ID_Hello = 1
};

wxIMPLEMENT_APP(MyApp);

bool MyApp::OnInit() {
    MyFrame *frame = new MyFrame();
    frame->Show(true);
    return true;
}

MyFrame::MyFrame(): wxFrame(NULL, wxID_ANY, "Hello World") {
    wxMenu *menuFile = new wxMenu;
    menuFile->Append(ID_Hello, "&Hello...\tCtrl-H", "Help string shown in status bar for this menu item");
    menuFile->AppendSeparator();
    menuFile->Append(wxID_EXIT);

    wxMenu *menuHelp = new wxMenu;
    menuHelp->Append(wxID_ABOUT);

    wxMenuBar *menuBar = new wxMenuBar;
    menuBar->Append(menuFile, "&File");
    menuBar->Append(menuHelp, "&Help");

    SetMenuBar( menuBar );
    CreateStatusBar();
    SetStatusText("Welcome to wxWidgets!");

    Bind(wxEVT_MENU, &MyFrame::OnHello, this, ID_Hello);
    Bind(wxEVT_MENU, &MyFrame::OnAbout, this, wxID_ABOUT);
    Bind(wxEVT_MENU, &MyFrame::OnExit, this, wxID_EXIT);
}

void MyFrame::OnExit(wxCommandEvent& event) {
    Close(true);
}

void MyFrame::OnAbout(wxCommandEvent& event) {
    wxMessageBox("This is a wxWidgets Hello World example", "About Hello World", wxOK | wxICON_INFORMATION);
}

void MyFrame::OnHello(wxCommandEvent& event) {
    wxLogMessage("Hello world from wxWidgets!");
}

The contents of CMakeLists.txt:

cmake_minimum_required(VERSION 2.8)

project(hello_world)

if (MINGW)
    add_compile_options(--static)
endif()

set(wx_libraries_path "C:\\C++\\wxWidgets-3.1.3\\bin")

if(CMAKE_BUILD_TYPE STREQUAL "Debug")
    include_directories("C:\\C++\\wxWidgets-3.1.3\\include\\mswud")
    find_library(libwxexpat       NAMES libwxexpatd        PATH ${wx_libraries_path})
    find_library(libwxjpeg        NAMES libwxjpegd         PATH ${wx_libraries_path})
    find_library(libwxpng         NAMES libwxpngd          PATH ${wx_libraries_path})
    find_library(libwxregexu      NAMES libwxregexud       PATH ${wx_libraries_path})
    find_library(libwxscintilla   NAMES libwxscintillad    PATH ${wx_libraries_path})
    find_library(libwxtiff        NAMES libwxtiffd         PATH ${wx_libraries_path})
    find_library(libwxzlib        NAMES libwxzlibd         PATH ${wx_libraries_path})
    find_library(wxbase31u        NAMES wxbase31ud         PATH ${wx_libraries_path})
    find_library(wxbase31u_xml    NAMES wxbase31ud_net     PATH ${wx_libraries_path})
    find_library(wxbase31u_net    NAMES wxbase31ud_xml     PATH ${wx_libraries_path})
    find_library(wxmsw31u_adv     NAMES wxmsw31ud_adv      PATH ${wx_libraries_path})
    find_library(wxmsw31u_aui     NAMES wxmsw31ud_aui      PATH ${wx_libraries_path})
    find_library(wxmsw31u_core    NAMES wxmsw31ud_core     PATH ${wx_libraries_path})
    find_library(wxmsw31u_gl      NAMES wxmsw31ud_gl       PATH ${wx_libraries_path})
    find_library(wxmsw31u_html    NAMES wxmsw31ud_html     PATH ${wx_libraries_path})
    find_library(wxmsw31u_media   NAMES wxmsw31ud_media    PATH ${wx_libraries_path})
    find_library(wxmsw31u_propgri NAMES wxmsw31ud_propgrid PATH ${wx_libraries_path})
    find_library(wxmsw31u_qa      NAMES wxmsw31ud_qa       PATH ${wx_libraries_path})
    find_library(wxmsw31u_ribbon  NAMES wxmsw31ud_ribbon   PATH ${wx_libraries_path})
    find_library(wxmsw31u_richtex NAMES wxmsw31ud_richtext PATH ${wx_libraries_path})
    find_library(wxmsw31u_stc     NAMES wxmsw31ud_stc      PATH ${wx_libraries_path})
    find_library(wxmsw31u_webview NAMES wxmsw31ud_webview  PATH ${wx_libraries_path})
    find_library(wxmsw31u_xrc     NAMES wxmsw31ud_xrc      PATH ${wx_libraries_path})
endif()

if(CMAKE_BUILD_TYPE STREQUAL "Release")
    include_directories("C:\\C++\\wxWidgets-3.1.3\\include\\mswu")
    find_library(libwxexpat       NAMES libwxexpat       PATH ${wx_libraries_path})
    find_library(libwxjpeg        NAMES libwxjpeg        PATH ${wx_libraries_path})
    find_library(libwxpng         NAMES libwxpng         PATH ${wx_libraries_path})
    find_library(libwxregexu      NAMES libwxregexu      PATH ${wx_libraries_path})
    find_library(libwxscintilla   NAMES libwxscintilla   PATH ${wx_libraries_path})
    find_library(libwxtiff        NAMES libwxtiff        PATH ${wx_libraries_path})
    find_library(libwxzlib        NAMES libwxzlib        PATH ${wx_libraries_path})
    find_library(wxbase31u        NAMES wxbase31u        PATH ${wx_libraries_path})
    find_library(wxbase31u_xml    NAMES wxbase31u_xml    PATH ${wx_libraries_path})
    find_library(wxbase31u_net    NAMES wxbase31u_net    PATH ${wx_libraries_path})
    find_library(wxmsw31u_adv     NAMES wxmsw31u_adv     PATH ${wx_libraries_path})
    find_library(wxmsw31u_aui     NAMES wxmsw31u_aui     PATH ${wx_libraries_path})
    find_library(wxmsw31u_core    NAMES wxmsw31u_core    PATH ${wx_libraries_path})
    find_library(wxmsw31u_gl      NAMES wxmsw31u_gl      PATH ${wx_libraries_path})
    find_library(wxmsw31u_html    NAMES wxmsw31u_html    PATH ${wx_libraries_path})
    find_library(wxmsw31u_media   NAMES wxmsw31u_media   PATH ${wx_libraries_path})
    find_library(wxmsw31u_propgri NAMES wxmsw31u_propgri PATH ${wx_libraries_path})
    find_library(wxmsw31u_qa      NAMES wxmsw31u_qa      PATH ${wx_libraries_path})
    find_library(wxmsw31u_ribbon  NAMES wxmsw31u_ribbon  PATH ${wx_libraries_path})
    find_library(wxmsw31u_richtex NAMES wxmsw31u_richtex PATH ${wx_libraries_path})
    find_library(wxmsw31u_stc     NAMES wxmsw31u_stc     PATH ${wx_libraries_path})
    find_library(wxmsw31u_webview NAMES wxmsw31u_webview PATH ${wx_libraries_path})
    find_library(wxmsw31u_xrc     NAMES wxmsw31u_xrc     PATH ${wx_libraries_path})
endif()

include_directories("C:\\C++\\wxWidgets-3.1.3\\include")
link_directories("C:\\C++\\wxWidgets-3.1.3\\bin")

add_executable(app sources/main.cpp)

message(STATUS "${libwxexpat}")
target_link_libraries(app PRIVATE
    ${libwxexpat}
    ${libwxjpeg}
    ${libwxpng}
    ${libwxregexu}
    ${libwxscintilla}
    ${libwxtiff}
    ${libwxzlib}
    ${wxbase31u}
    ${wxbase31u_xml}
    ${wxbase31u_net}
    ${wxmsw31u_adv}
    ${wxmsw31u_aui}
    ${wxmsw31u_core}
    ${wxmsw31u_gl}
    ${wxmsw31u_html}
    ${wxmsw31u_media}
    ${wxmsw31u_propgrid}
    ${wxmsw31u_qa}
    ${wxmsw31u_ribbon}
    ${wxmsw31u_richtext}
    ${wxmsw31u_stc}
    ${wxmsw31u_webview}
    ${wxmsw31u_xrc}
)

After I created project files I executed following CMake command to configure the project:

cmake -G "MinGW Makefiles" .. -D "CMAKE_C_COMPILER=gcc.exe" -D "CMAKE_CXX_COMPILER=g++.exe" -D "CMAKE_BUILD_TYPE=Debug" -D "CMAKE_VERBOSE_MAKEFILE:BOOL=ON"

Then I tried and failed to build the project with the following CMake command:

cmake --build .

Compilation errors

Unfortunately, the program fails to compile with, here is the output:

"C:\Program Files\CMake\bin\cmake.exe" -E cmake_progress_start C:\Users\Oiltanker\Git\Pepega-Inject\installer\build\CMakeFiles C:\Users\Oiltanker\Git\Pepega-Inject\installer\build\CMakeFiles\progress.marks
C:/C++/MingGW-w64/mingw64/bin/mingw32-make.exe -f CMakeFiles\Makefile2 all
mingw32-make.exe[1]: Entering directory 'C:/Users/Oiltanker/Git/Pepega-Inject/installer/build'
C:/C++/MingGW-w64/mingw64/bin/mingw32-make.exe -f CMakeFiles\app.dir\build.make CMakeFiles/app.dir/depend
mingw32-make.exe[2]: Entering directory 'C:/Users/Oiltanker/Git/Pepega-Inject/installer/build'
"C:\Program Files\CMake\bin\cmake.exe" -E cmake_depends "MinGW Makefiles" C:\Users\Oiltanker\Git\Pepega-Inject\installer C:\Users\Oiltanker\Git\Pepega-Inject\installer C:\Users\Oiltanker\Git\Pepega-Inject\installer\build C:\Users\Oiltanker\Git\Pepega-Inject\installer\build C:\Users\Oiltanker\Git\Pepega-Inject\installer\build\CMakeFiles\app.dir\DependInfo.cmake --color=
Dependee "C:\Users\Oiltanker\Git\Pepega-Inject\installer\build\CMakeFiles\app.dir\DependInfo.cmake" is newer than depender "C:/Users/Oiltanker/Git/Pepega-Inject/installer/build/CMakeFiles/app.dir/depend.internal".
Dependee "C:/Users/Oiltanker/Git/Pepega-Inject/installer/build/CMakeFiles/CMakeDirectoryInformation.cmake" is newer than depender "C:/Users/Oiltanker/Git/Pepega-Inject/installer/build/CMakeFiles/app.dir/depend.internal".
Scanning dependencies of target app
mingw32-make.exe[2]: Leaving directory 'C:/Users/Oiltanker/Git/Pepega-Inject/installer/build'
C:/C++/MingGW-w64/mingw64/bin/mingw32-make.exe -f CMakeFiles\app.dir\build.make CMakeFiles/app.dir/build
mingw32-make.exe[2]: Entering directory 'C:/Users/Oiltanker/Git/Pepega-Inject/installer/build'
[ 50%] Building CXX object CMakeFiles/app.dir/sources/main.cpp.obj
C:\C++\MingGW-w64\mingw64\bin\g++.exe   @CMakeFiles/app.dir/includes_CXX.rsp -g   --static -o CMakeFiles\app.dir\sources\main.cpp.obj -c C:\Users\Oiltanker\Git\Pepega-Inject\installer\sources\main.cpp
[100%] Linking CXX executable app.exe
"C:\Program Files\CMake\bin\cmake.exe" -E cmake_link_script CMakeFiles\app.dir\link.txt --verbose=1
"C:\Program Files\CMake\bin\cmake.exe" -E remove -f CMakeFiles\app.dir/objects.a
C:\C++\MingGW-w64\mingw64\bin\ar.exe cr CMakeFiles\app.dir/objects.a @CMakeFiles\app.dir\objects1.rsp
C:\C++\MingGW-w64\mingw64\bin\g++.exe -g   -Wl,--whole-archive CMakeFiles\app.dir/objects.a -Wl,--no-whole-archive  -o app.exe -Wl,--out-implib,libapp.dll.a -Wl,--major-image-version,0,--minor-image-version,0 @CMakeFiles\app.dir\linklibs.rsp
C:/C++/wxWidgets-3.1.3/bin/wxbase31ud.a(dlmsw.cpp.obj): In function `GetFileVersion':
C:/C++/wxWidgets-3.1.3/src/msw/dlmsw.cpp:67: undefined reference to `GetFileVersionInfoSizeW'
      .......
C:/C++/wxWidgets-3.1.3/src/common/geometry.cpp:350: undefined reference to `wxDataInputStream::Read32()'
collect2.exe: error: ld returned 1 exit status
mingw32-make.exe[2]: *** [CMakeFiles\app.dir\build.make:110: app.exe] Error 1
mingw32-make.exe[2]: Leaving directory 'C:/Users/Oiltanker/Git/Pepega-Inject/installer/build'
mingw32-make.exe[1]: *** [CMakeFiles\Makefile2:78: CMakeFiles/app.dir/all] Error 2
mingw32-make.exe[1]: Leaving directory 'C:/Users/Oiltanker/Git/Pepega-Inject/installer/build'
mingw32-make.exe: *** [Makefile:86: all] Error 2```

Solution

I managed to solve my problem. After I started searching on internet for answers and I found wxWidgets project CMakeLists.txt example that didn't work because it needed some variables set. After I set them correctly, I managed to compile hello world example.

Here is the contents of CMakeLists.txt file:

project(hello_world)
cmake_minimum_required(VERSION 2.8)

aux_source_directory(src SRC_LIST)

set(wxWidgets_ROOT_DIR "C:/C++/wxWidgets")
set(wxWidgets_LIB_DIR "C:/C++/wxWidgets/lib/gcc_x64_lib")
set(wxWidgets_LIBRARIES "C:/C++/wxWidgets/lib")
set(wxWidgets_INCLUDE_DIRS "C:/C++/wxWidgets/include/wx")

set(wxWidgets_CONFIGURATION mswud)
find_package(wxWidgets COMPONENTS core base REQUIRED)
include(${wxWidgets_USE_FILE})

add_executable(${PROJECT_NAME} ${SRC_LIST})
target_link_libraries(${PROJECT_NAME} ${wxWidgets_LIBRARIES})

Process in detail

I deleted wxWidgets and recompiled them.

This time the wxWidgets source code was located in C:\C++\wxWidgets-source directory
I built install target to the C:\C++\wxWidgets directory with the following command:
```
$ cmake --build . --target install
```
You can specify the destination where your installation will go to by altering wxINSTALL_PREFIX definition in setup.h file and alerting CMAKE_INSTALL_PREFIX definition in cmake_install.cmake file.
- In case of debug configuration, the setup.h file will be located in <cmake_building_directory>\lib\gcc_x64_lib\mswud\wx
- In case of release configuration, the setup.h file will be located in <cmake_building_directory>\lib\gcc_x64_lib\mswu\wx

I was also told that wxWidgets might have a specific linking order and that find_package function solves automatically, whether it is true or not I cannot tell.