WASM=0 still runs the normal compilation pipeline to wasm. It just then converts the WASM into JavaScript at the very end. (Older versions of emscripten, that still used fastcomp, used to do things differently.)
What is actually making lld error there? What type of file is ffmpeg.bc? (running "file ffmpeg.bc" can help) If it's LLVM bitcode, of an older version, then it needs to be recompiled for the current version. On Sun, Nov 22, 2020 at 8:11 AM Eric Brisco <eric.bri...@gmail.com> wrote: > Hello, > > I am trying to build ffmpeg using the build setup > https://github.com/Kagami/ffmpeg.js which uses Emscripten. It is supposed > to target JavaScript, not Web Assembly, and uses -s WASM=0 to make that > switch. However, eventually the make script encounters this error: > > $ make ffmpeg-webm.js > emcc build/ffmpeg-webm/ffmpeg.bc build/opus/dist/lib/libopus.so > build/libvpx/dist/lib/libvpx.so \ > --post-js build/post-sync.js \ > -O3 --closure 1 --memory-init-file 0 -s WASM=0 -s > WASM_ASYNC_COMPILATION=0 -s ASSERTIONS=0 -s EXIT_RUNTIME=1 -s > NODEJS_CATCH_EXIT=0 -s NODEJS_CATCH_REJECTION=0 -s TOTAL_MEMORY=67108864 > -lnodefs.js -lworkerfs.js --pre-js build/pre.js -o ffmpeg-webm.js > wasm-ld: error: unknown file type: build/ffmpeg-webm/ffmpeg.bc > emcc: error: '/mnt/c/Users/erisco/Documents/cpp/emsdk/upstream/bin/wasm-ld > -o ffmpeg-webm.wasm build/ffmpeg-webm/ffmpeg.bc > build/opus/dist/lib/libopus.so build/libvpx/dist/lib/libvpx.so > -L/mnt/c/Users/erisco/Documents/cpp/emsdk/upstream/emscripten/cache/wasm > /mnt/c/Users/erisco/Documents/cpp/emsdk/upstream/emscripten/cache/wasm/libc.a > /mnt/c/Users/erisco/Documents/cpp/emsdk/upstream/emscripten/cache/wasm/libcompiler_rt.a > /mnt/c/Users/erisco/Documents/cpp/emsdk/upstream/emscripten/cache/wasm/libc++-noexcept.a > /mnt/c/Users/erisco/Documents/cpp/emsdk/upstream/emscripten/cache/wasm/libc++abi-noexcept.a > /mnt/c/Users/erisco/Documents/cpp/emsdk/upstream/emscripten/cache/wasm/libdlmalloc.a > /mnt/c/Users/erisco/Documents/cpp/emsdk/upstream/emscripten/cache/wasm/libpthread_stub.a > /mnt/c/Users/erisco/Documents/cpp/emsdk/upstream/emscripten/cache/wasm/libc_rt_wasm.a > /mnt/c/Users/erisco/Documents/cpp/emsdk/upstream/emscripten/cache/wasm/libsockets.a > -mllvm -combiner-global-alias-analysis=false -mllvm -enable-emscripten-sjlj > -mllvm -disable-lsr --allow-undefined --import-memory --strip-debug > --export-table --export main --export stackSave --export stackRestore > --export stackAlloc --export __wasm_call_ctors --export fflush --export > __errno_location --export malloc --export free --export setThrew --export > realloc --export testSetjmp --export saveSetjmp -z stack-size=5242880 > --initial-memory=67108864 --no-entry --max-memory=67108864 > --global-base=1024' failed (1) > Makefile:233: recipe for target 'ffmpeg-webm.js' failed > make: *** [ffmpeg-webm.js] Error 1 > > It seems as though -s WASM=0 is having no effect because I would not > expect wasm-ld to be called at all, and definitely not on ffmpeg.bc (which > is a JavaScript file). > > Anyone have some advice for this? > > Thanks, > Eric > > P.S. I also have this issue open on the ffmpeg.js tracker, as perhaps it > is a problem with the build script: > https://github.com/Kagami/ffmpeg.js/issues/148 > > -- > You received this message because you are subscribed to the Google Groups > "emscripten-discuss" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to emscripten-discuss+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/emscripten-discuss/f47027af-5c39-4730-befc-93ea9c13a797n%40googlegroups.com > <https://groups.google.com/d/msgid/emscripten-discuss/f47027af-5c39-4730-befc-93ea9c13a797n%40googlegroups.com?utm_medium=email&utm_source=footer> > . > -- You received this message because you are subscribed to the Google Groups "emscripten-discuss" group. To unsubscribe from this group and stop receiving emails from it, send an email to emscripten-discuss+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/emscripten-discuss/CAEX4NpSXybuQwUp9o98CiLCqGiVp8jHjKsk-q_9ObWDjKPCdMg%40mail.gmail.com.
