I think this should fix your issue: https://github.com/emscripten-core/emscripten/pull/15497
On Thu, Nov 11, 2021 at 1:44 PM Sam Clegg <[email protected]> wrote: > > > On Thu, Nov 11, 2021 at 4:46 AM Floh <[email protected]> wrote: > >> These are the related header/source pairs in MUSL, and it seems that >> these are new (didn't exist in the stable SDK): >> >> >> https://github.com/emscripten-core/emscripten/blob/main/system/lib/libc/musl/src/math/exp_data.h >> >> https://github.com/emscripten-core/emscripten/blob/main/system/lib/libc/musl/src/math/exp_data.c >> >> >> https://github.com/emscripten-core/emscripten/blob/main/system/lib/libc/musl/src/math/exp2f_data.h >> >> https://github.com/emscripten-core/emscripten/blob/main/system/lib/libc/musl/src/math/exp2f_data.c >> >> When listing the libc.a symbols in the emscripten cache with llvm-nm I >> can see the entry for exp_data but nothing for exp2f_data: >> >> exp_data.o: >> -------- D __exp_data >> >> (which is doubly weird, why does exp_data produce a linker error even >> though it's there, and why isn't exp2f_data anywhere to be found) >> >> ...anyway, that's how far I got :) >> > > I suspect LTO is the culprit here. Does you non-LTO build work? > > I think these symbols can get generated at codegen time which can confuse > LTO because it likes to know all the symbols needed before running the > compiler/LTO. > > > >> On Thursday, 11 November 2021 at 12:57:06 UTC+1 Floh wrote: >> >>> PS: my other WASM projects appear to work fine (the home computer >>> emulators here: https://floooh.github.io/tiny8bit/, and the Z80 and >>> 6502 netlist simulations: https://floooh.github.io/visualz80remix/, >>> https://floooh.github.io/visual6502remix/). >>> >>> On Thursday, 11 November 2021 at 12:02:12 UTC+1 Floh wrote: >>> >>>> I'm getting the following linker errors in my sokol-samples project: >>>> >>>> 5x: >>>> wasm-ld: error: >>>> /...cache/sysroot/lib/wasm32-emscripten/lto/libc.a(exp2f_data.o): undefined >>>> symbol: __exp2f_data >>>> >>>> 8x: >>>> wasm-ld: error: >>>> /...cache/sysroot/lib/wasm32-emscripten/lto/libc.a(exp_data.o): undefined >>>> symbol: __exp_data >>>> >>>> Full wasm-ld command line: >>>> >>>> em++: error: '/Users/floh/projects/fips-sdks/emsdk/upstream/bin/wasm-ld >>>> -o >>>> /Users/floh/projects/fips-deploy/sokol-samples/sapp-webgl2-wasm-ninja-release/modplay-sapp.wasm >>>> sapp/CMakeFiles/modplay-sapp.dir/modplay-sapp.c.obj libs/sokol/libsokol.a >>>> fips-libmodplug_libmodplug/liblibmodplug.a >>>> -L/Users/floh/projects/fips-sdks/emsdk/upstream/emscripten/cache/sysroot/lib/wasm32-emscripten/lto >>>> -lGL-webgl2 -lal -lhtml5 -lstubs -lc -lcompiler_rt -lc++-noexcept >>>> -lc++abi-noexcept -lemmalloc -lc_rt_wasm -lsockets -mllvm >>>> -combiner-global-alias-analysis=false -mllvm -enable-emscripten-sjlj -mllvm >>>> -disable-lsr --import-undefined --strip-debug --export-if-defined=main >>>> --export-if-defined=stackSave --export-if-defined=stackRestore >>>> --export-if-defined=stackAlloc --export-if-defined=__wasm_call_ctors >>>> --export-if-defined=__errno_location --export-if-defined=malloc >>>> --export-if-defined=free --export-if-defined=__start_em_asm >>>> --export-if-defined=__stop_em_asm --export-table -z stack-size=5242880 >>>> --initial-memory=33554432 --no-entry --max-memory=2147483648 >>>> <(214)%20748-3648> --global-base=1024' failed (returned 1) >>>> >>>> ...and the em++ command line: >>>> >>>> /Users/floh/projects/fips-sdks/emsdk/upstream/emscripten/em++ -s >>>> DISABLE_EXCEPTION_CATCHING=1 -fno-exceptions -fno-rtti -std=c++11 >>>> -fstrict-aliasing -Wall -Wno-multichar -Wextra -Wno-unknown-pragmas >>>> -Wno-ignored-qualifiers -Wno-long-long -Wno-overloaded-virtual >>>> -Wno-deprecated-writable-strings -Wno-unused-volatile-lvalue >>>> -Wno-inconsistent-missing-override -Wno-warn-absolute-paths >>>> -Wno-expansion-to-defined -flto -O3 -DNDEBUG -s >>>> DISABLE_EXCEPTION_CATCHING=1 --memory-init-file 0 -s >>>> INITIAL_MEMORY=33554432 -s ERROR_ON_UNDEFINED_SYMBOLS=1 -s >>>> NO_EXIT_RUNTIME=1 -s ALLOW_MEMORY_GROWTH=1 -s USE_WEBGL2=1 -s >>>> "MALLOC='emmalloc'" -s NO_FILESYSTEM=1 -s WASM=1 --shell-file >>>> /Users/floh/projects/sokol-samples/webpage/shell.html -O3 -flto --closure >>>> 1 -s ASSERTIONS=0 sapp/CMakeFiles/modplay-sapp.dir/modplay-sapp.c.obj -o >>>> /Users/floh/projects/fips-deploy/sokol-samples/sapp-webgl2-wasm-ninja-release/modplay-sapp.html >>>> libs/sokol/libsokol.a fips-libmodplug_libmodplug/liblibmodplug.a >>>> >>>> Investigating now, I think the most likely culprit is libmodplug (a MOD >>>> player library). >>>> >>>> Should I open a separate github ticket, or append this type of feedback >>>> to the PR? >>>> >>>> Cheers, >>>> -Andre. >>>> >>>> On Wednesday, 10 November 2021 at 17:33:34 UTC+1 [email protected] wrote: >>>> >>>>> Yesterday I landed the update to musl v1.2.2: >>>>> https://github.com/emscripten-core/emscripten/pull/13006 >>>>> >>>>> This is a fairly large change so we decided that next emscripten >>>>> release will bump the version 3.0.0. >>>>> >>>>> If you are interested in helping us test this new version before we >>>>> release it it would be great if you could try installing the `tot` version >>>>> of emsdk which now contains this new version musl (`./emsdk install tot`). >>>>> We are keen to find and fix any issues that might arise from this change. >>>>> >>>>> cheers, >>>>> sam >>>>> >>>> -- >> 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 [email protected]. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/emscripten-discuss/ff0f0683-9ed5-44b0-b0be-f51267863559n%40googlegroups.com >> <https://groups.google.com/d/msgid/emscripten-discuss/ff0f0683-9ed5-44b0-b0be-f51267863559n%40googlegroups.com?utm_medium=email&utm_source=footer> >> . >> > -- You received this message because you are subscribed to the Google Groups "emscripten-discuss" group. 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