Emscripten builds for web apps

Crosscompiling MRPT to a JS library

Install Emscripten: https://emscripten.org/docs/getting_started/downloads.html

cd mrpt
mkdir build-ems
cd    build-ems

cmake .. \
  -DCMAKE_TOOLCHAIN_FILE=$HOME/code/emsdk/upstream/emscripten/cmake/Modules/Platform/Emscripten.cmake \
  -DCMAKE_EXE_LINKER_FLAGS="-s ASSERTIONS=1" \
  -DCMAKE_CXX_FLAGS="-s NO_DISABLE_EXCEPTION_CATCHING" \
  -DCMAKE_REQUIRED_FLAGS="-s USE_LIBJPEG=1 -s USE_LIBPNG=1 -s USE_ZLIB=1" \
  -DMRPT_EIGEN_USE_EMBEDDED_VERSION=ON \
  -DMRPT_HAS_OPENNI2=OFF \
  -DMRPT_AUTODETECT_SIMD=OFF \
  -DDISABLE_ASSIMP=ON \
  -DMRPT_WITH_XSENS=OFF \
  -DMRPT_WITH_ROBOPEAK_LIDAR=OFF \
  -DDISABLE_FFMPEG=ON \
  -DDISABLE_LIBDC1394=On \
  -DMRPT_WITH_KINECT=Off

make

TODO:

• Add support for ASSIMP and OpenCV as WAsm-built libs too.

Threads:

  -DCMAKE_CXX_FLAGS="-s USE_PTHREADS"

Crosscompiling wxWidgets

mkdir wxWidgets/build-emscripten
cd    wxWidgets/build-emscripten

cmake .. \
  -DCMAKE_TOOLCHAIN_FILE=$HOME/code/emsdk/upstream/emscripten/cmake/Modules/Platform/Emscripten.cmake \
  -DCMAKE_CXX_FLAGS="-s USE_LIBJPEG=1 -s USE_LIBPNG=1 -s USE_SDL=2 -s USE_ZLIB=1" \
  -DCMAKE_REQUIRED_FLAGS="-s USE_LIBJPEG=1 -s USE_LIBPNG=1 -s USE_SDL=2 -s USE_ZLIB=1"

make