compile_Windows.md

coross compile windows on Ubuntu 18.04 use mingw-w64 or macOS

1. Environment setup

Ubuntu 18.04

sudo apt install git make autoconf libtool yasm
sudo apt install g++-mingw-w64-x86-64 gcc-mingw-w64-i686

macOS

brew install mingw-w64

2. update cmake for Ubuntu

https://github.com/Kitware/CMake/releases/download/v3.16.0/cmake-3.16.0-Linux-x86_64.sh

3. select posix mingw for Ubuntu

```bash
sudo update-alternatives --config x86_64-w64-mingw32-g++ # Set the default mingw32 g++ compiler option to posix.
sudo update-alternatives --config i686-w64-mingw32-g++   
sudo update-alternatives --config x86_64-w64-mingw32-gcc # Set the default mingw32 gcc compiler option to posix.
sudo update-alternatives --config i686-w64-mingw32-gcc
```

4. download sdl

   https://www.libsdl.org/release/SDL2-devel-2.0.10-mingw.tar.gz

   edit framework/windows.cmake add /path/to/your/sdl/x86_64-w64-mingw32/lib to COMMON_LIB_DIR add /path/to/your/sdl/x86_64-w64-mingw32/include to COMMON_INC_DIR

5. build_external

   . setup.env
   cd external/
   ./build_external.sh Windows

6. build cmdline

   cd cmdline/
   mkdir build
   cd build
   cmake -DCMAKE_TOOLCHAIN_FILE=../cmdline/toolchain.windows.cmake ../
   make cicadaPlayer

7. copy to windows

   copy the files under to a same dir to windows pc

   • cicadaPlayer.exe in build dir
   • libgcc_s_seh-1.dll, libstdc++-6.dll, libwinpthread-1.dll, find it in mingw install dir
   • avcodec-58.dll, avfilter-7.dll, avformat-58.dll,avresample-4.dll, avutil-56.dll, swresample-3.dll, swscale-5.dll, find in external/install/ffmpeg/win32/x86_64/bin/
   • SDL2.dll find in sdl download dir

   double click cicadaPlayer.exe