SUMO netconvert WebAssembly (and osmconvert)

Demo

• netconvert.wasm
• osmconvert.wasm

Build netconvert.wasm

Prepare

export WORK=/work/sumo
export SUMO_HOME=$WORK/sumo
export EMPREFIX=$WORK/emenv
source $WORK/emsdk/emsdk_env.sh

Xerces-C++

wget https://dlcdn.apache.org//xerces/c/3/sources/xerces-c-3.2.4.tar.xz
tar xf xerces-c-3.2.4.tar.xz
cd xerces-c-3.2.4
emconfigure ./configure --disable-threads --disable-shared --disable-network --prefix=$EMPREFIX
emmake make >& make.log
emmake make install
cd ..

zlib

wget https://www.zlib.net/zlib-1.3.tar.xz
tar xf zlib-1.3.tar.xz
cd zlib-1.3
emconfigure ./configure --static --prefix=$EMPREFIX
emmake make >& make.log
emmake make install
cd ..

SQLite3

(PROJが依存)

wget https://www.sqlite.org/2023/sqlite-autoconf-3440000.tar.gz
tar xf sqlite-autoconf-3440000.tar.gz
cd sqlite-autoconf-3440000
emconfigure ./configure --disable-readline --disable-threadsafe --disable-dynamic-extensions --disable-shared --prefix=$EMPREFIX
emmake make >& make.log
emmake make install
cd ..

PROJ

wget https://download.osgeo.org/proj/proj-9.3.0.tar.gz
tar xf proj-9.3.0.tar.gz
cd proj-9.3.0
mkdir build
cd build
emcmake cmake -DENABLE_TIFF=OFF -DENABLE_CURL=OFF -DSQLITE3_INCLUDE_DIR=$EMPREFIX/include -DSQLITE3_LIBRARY=$EMPREFIX/lib/libsqlite3.a -DCMAKE_THREAD_LIBS_INIT=OFF -DBUILD_APPS=OFF -DBUILD_SHARED_LIBS=OFF -DBUILD_TESTING=OFF -DCMAKE_INSTALL_PREFIX=$EMPREFIX ..
emmake make >& make.log
emmake make install
cd ../..

SUMO netconvert

git clone --recursive --depth 1 https://github.com/eclipse-sumo/sumo
cd sumo

python-devがrequiredになってるけど、とりあえずCMakeLists.txtから外す。

-    find_package(Python REQUIRED COMPONENTS Interpreter Development)
+    find_package(Python REQUIRED COMPONENTS Interpreter) # Development)

スレッドを使わないようにCMakeLists.txtを変更。 (サーバ側でCross-Origin-Opener-PolicyとCross-Origin-Embedder-Policyヘッダを 付けないとSharedArrayBuffer is not definedエラーになるので)

-        set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -pthread -Wall -pedantic -Wextra")
+        set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -pedantic -Wextra")

libproj.aが依存するlibsqlite3.aを追加するため、無理やりIntl_LIBRARIESで指定。

Warning(Warning: Environment variable SUMO_HOME is not set, using built in type maps.) を消すため、data/typemap/を--embed-fileでwasmにうめこんで、 環境変数SUMO_HOMEを設定するpre.jsを--pre-jsで指定。

Module['preRun'] = () => {
  ENV.SUMO_HOME = '/';
};

CXXFLAGS='-sNO_DISABLE_EXCEPTION_CATCHING' emcmake cmake -D CHECK_OPTIONAL_LIBS=OFF -D FOX_CONFIG= -D MVN_EXECUTABLE= -D FMI=OFF -D NETEDIT=OFF -D ENABLE_PYTHON_BINDINGS=OFF -D ENABLE_JAVA_BINDINGS=OFF -D SWIG_LIBRARY= -D Intl_LIBRARY= -D X11_LIBRARY= -D XercesC_INCLUDE_DIR=$EMPREFIX/include -D XercesC_LIBRARY=$EMPREFIX/lib/libxerces-c.a -D XercesC_VERSION=3.2.4 -D ZLIB_INCLUDE_DIR=$EMPREFIX/include -D ZLIB_LIBRARY=$EMPREFIX/lib/libz.a -DPROJ_INCLUDE_DIR=$EMPREFIX/include -DPROJ_LIBRARY=$EMPREFIX/lib/libproj.a -DIntl_LIBRARIES=$EMPREFIX/lib/libsqlite3.a -DCMAKE_EXE_LINKER_FLAGS="-sFILESYSTEM=1 -sEXPORTED_RUNTIME_METHODS=FS,callMain -sMODULARIZE=1 -sEXPORT_ES6 -sINVOKE_RUN=0 -sENVIRONMENT=web,worker -sALLOW_MEMORY_GROWTH=1 -lworkerfs.js --embed-file $EMPREFIX/share/proj@. --embed-file $PWD/data/typemap@/data/typemap --pre-js $PWD/pre.js" -B build .

cd build
emmake make netconvert>&make.log

Build osmconvert.wasm

emcc osmconvert.c -o osmconvert.js -Oz -sUSE_ZLIB=1 -sFILESYSTEM=1 -sEXPORTED_RUNTIME_METHODS=FS,callMain -sMODULARIZE=1 -sEXPORT_ES6 -sINVOKE_RUN=0 -sENVIRONMENT=web,worker -sALLOW_MEMORY_GROWTH=1 -lworkerfs.js -sSTACK_SIZE=131072 -sSTACK_OVERFLOW_CHECK=2

参考

• mkbitmap を WebAssembly にコンパイルする