update emscripten compiler to V3.1.70, there is a GLIBC not found

[yangfangfang1204]

1、i update emscripten compiler to V3.1.70, the emcc -v :
hyde@ubuntu:~/Desktop/testThread$ emcc -v emcc (Emscripten gcc/clang-like replacement + linker emulating GNU ld) 3.1.70 (b53978ee3f540dc74761eba127aa7f1b8761a125) clang version 20.0.0git (https:/github.com/llvm/llvm-project f52b89561f2d929c0c6f37fd818229fbcad3b26c) Target: wasm32-unknown-emscripten Thread model: posix InstalledDir: /home/hyde/emsdk/upstream/bin
2、i emcc a testThread.cpp, there is an error:
/home/hyde/emsdk/node/20.18.0_64bit/bin/node: /lib/x86_64-linux-gnu/libm.so.6: version GLIBC_2.27' not found (required by /home/hyde/emsdk/node/20.18.0_64bit/bin/node)
/home/hyde/emsdk/node/20.18.0_64bit/bin/node: /lib/x86_64-linux-gnu/libc.so.6: version GLIBC_2.28' not found (required by /home/hyde/emsdk/node/20.18.0_64bit/bin/node) /home/hyde/emsdk/node/20.18.0_64bit/bin/node: /lib/x86_64-linux-gnu/libc.so.6: version GLIBC_2.25' not found (required by /home/hyde/emsdk/node/20.18.0_64bit/bin/node)
emcc: warning: cannot check node version: Command '['/home/hyde/emsdk/node/20.18.0_64bit/bin/node', '--version']' returned non-zero exit status 1. [-Wversion-check]
shared:INFO: (Emscripten: Running sanity checks)
/home/hyde/emsdk/node/20.18.0_64bit/bin/node: /lib/x86_64-linux-gnu/libm.so.6: version GLIBC_2.27' not found (required by /home/hyde/emsdk/node/20.18.0_64bit/bin/node) /home/hyde/emsdk/node/20.18.0_64bit/bin/node: /lib/x86_64-linux-gnu/libc.so.6: version GLIBC_2.28' not found (required by /home/hyde/emsdk/node/20.18.0_64bit/bin/node)
/home/hyde/emsdk/node/20.18.0_64bit/bin/node: /lib/x86_64-linux-gnu/libc.so.6: version GLIBC_2.25' not found (required by /home/hyde/emsdk/node/20.18.0_64bit/bin/node) emcc: error: the configured node executable (['/home/hyde/emsdk/node/20.18.0_64bit/bin/node']) does not seem to work, check the paths in /home/hyde/emsdk/.emscripten (Command '['/home/hyde/emsdk/node/20.18.0_64bit/bin/node', '-e', 'console.log("hello")']' returned non-zero exit status 1.)

the emcc script is
emcc -O3 testThread.cpp -o testThread.js -s PTHREAD_POOL_SIZE_STRICT=0 -s USE_PTHREADS=1 -s EXPORTED_FUNCTIONS="['_testThread','_stop']" -s INITIAL_MEMORY=128MB -s ENVIRONMENT=web,worker

so why is a node error?

[sbc100]

This looks like it was due to #1476.

This change updated the version of node that we supply which in turn looks like it increased the glibc dependencies. What version of linux are running on?

[sbc100]

We could look into reverting #1476 which is not actually a required change, but more about consistency (IIRC). @juj?

[kleisauke]

Node.js v18.x has the same minimum glibc requirement as Node.js v20.x, so this issue likely existed before PR #1476 as well. See:
https://github.com/nodejs/node/blob/v18.x/BUILDING.md#platform-list
https://github.com/nodejs/node/blob/v20.x/BUILDING.md#platform-list

[yangfangfang1204]

This change updated the version of node that we supply which in turn looks like it increased the glibc dependencies. What version of linux are running on?

ubuntu 16.04

[yangfangfang1204]

so what should I do to use Emscripten V3.1.70 normally? Try to install Emscripten V3.1.70 on ubuntu 20.01?

[sbc100]

As of #1387 the new minimum Ubuntu version is Ubuntu/Focal 20.04.

Note the emscripten itself still supports older versions of node but emsdk provides a modern version of node that requires 20.04.

If you have your own version of node installed on your system then you could set EM_NODE=/path/to/node which would override the version of node that comes with emsdk.