make error

[smallsao]

mkdir build
cd build
emcmake cmake ..
make

when I do make , something is error

[ 50%] Building CXX object src/CMakeFiles/mujoco_wasm.dir/main.genned.cc.o
[100%] Linking CXX executable /Downloads/mujoco_wasm-main/dist/mujoco_wasm.js
error: undefined symbol: saveSetjmp (referenced by root reference (e.g. compiled C/C++ code))
warning: To disable errors for undefined symbols use `-sERROR_ON_UNDEFINED_SYMBOLS=0`
warning: _saveSetjmp may need to be added to EXPORTED_FUNCTIONS if it arrives from a system library
error: undefined symbol: testSetjmp (referenced by root reference (e.g. compiled C/C++ code))
warning: _testSetjmp may need to be added to EXPORTED_FUNCTIONS if it arrives from a system library
Error: Aborting compilation due to previous errors
em++: error: '/home/zy/Downloads/emsdk/node/18.20.3_64bit/bin/node /home/zy/Downloads/emsdk/upstream/emscripten/src/compiler.mjs /tmp/tmpfhv1mae3.json' failed (returned 1)
make[2]: *** [src/CMakeFiles/mujoco_wasm.dir/build.make:100：/home/zy/Downloads/mujoco_wasm-main/dist/mujoco_wasm.js] 错误 1
make[1]: *** [CMakeFiles/Makefile2:98：src/CMakeFiles/mujoco_wasm.dir/all] 错误 2
make: *** [Makefile:136：all] 错误 2

cmake version 3.28.3
ubuntu 22.04

[schlagercollin]

Same issue here. @smallsao were you able to resolve this?

Ubuntu: 22.04.3
CMake: 3.22.1
Commit: 4759515

[schlagercollin]

Same issue here. @smallsao were you able to resolve this?

Ubuntu: 22.04.3 CMake: 3.22.1 Commit: 4759515

Following up. Looks like the MuJoCo source will need to be re-compiled with the latest version of Emscripten.

Related issue: emscripten-core/emscripten#21756

The fix is to use a slightly earlier version of Enscripten -- e.g. 3.1.56 instead of 3.1.57.

# install and use `3.1.56`
cd <your-emscripten-cloned-github-folder>
./emsdk install 3.1.56 &&  ./emsdk activate 3.1.56 && source ./emsdk_env.sh

# re-build mujoco_wasm (as per the README instructions)
cd <your-mujoco_wasm-github-folder>
mkdir build
cd build
emcmake cmake ..
make