unable to do Emscripten compilation

[fbordeu]

Hello, I'm tiring to compile openlibm for a pyodide (python on eb) using Emscripten.

this is my first error:

[1/257] Building C object CMakeFiles/openlibm.dir/src/e_acosf.c.o
FAILED: [code=1] CMakeFiles/openlibm.dir/src/e_acosf.c.o
/mnt/c/Users/felip/Documents/PythonLibs/Experiments/pyodide/emsdk/upstream/emscripten/emcc -Dopenlibm_EXPORTS -I/home/fbordeu/PythonLibs/Experiments/pyodide/cmakebuild/wheel/cp313-cp313-emscripten_4_0_9_wasm32/openlibm-prefix/src/openlibm -I/home/fbordeu/PythonLibs/Experiments/pyodide/cmakebuild/wheel/cp313-cp313-emscripten_4_0_9_wasm32/openlibm-prefix/src/openlibm/include -I/home/fbordeu/PythonLibs/Experiments/pyodide/cmakebuild/wheel/cp313-cp313-emscripten_4_0_9_wasm32/openlibm-prefix/src/openlibm/i387 -I/home/fbordeu/PythonLibs/Experiments/pyodide/cmakebuild/wheel/cp313-cp313-emscripten_4_0_9_wasm32/openlibm-prefix/src/openlibm/src -I/home/fbordeu/PythonLibs/Experiments/pyodide/cmakebuild/wheel/cp313-cp313-emscripten_4_0_9_wasm32/openlibm-prefix/src/openlibm/ld80 -O2 -g0 -fPIC -fwasm-exceptions -sSUPPORT_LONGJMP -I/home/fbordeu/.cache/.pyodide-xbuildenv-0.30.9/0.29.0/xbuildenv/pyodide-root/cpython/installs/python-3.13.2/include/python3.13 -O2 -g0 -fPIC -fwasm-exceptions -sSUPPORT_LONGJMP -I/home/fbordeu/.cache/.pyodide-xbuildenv-0.30.9/0.29.0/xbuildenv/pyodide-root/cpython/installs/python-3.13.2/include/python3.13 -O2 -g0 -fPIC -fwasm-exceptions -sSUPPORT_LONGJMP -I/home/fbordeu/.cache/.pyodide-xbuildenv-0.30.9/0.29.0/xbuildenv/pyodide-root/cpython/installs/python-3.13.2/include/python3.13 -O3 -DNDEBUG -fPIC -msimd128 -ffp-contract=off -fno-fast-math -fno-rounding-math -fno-math-errno -fPIC -std=c99 -fno-builtin -Wall -Wno-implicit-function-declaration -DASSEMBLER -D__BSD_VISIBLE -O3 -fno-strict-aliasing -ffp-exception-behavior=strict -march=i686 -m32 -msse2 -mfpmath=sse -MD -MT CMakeFiles/openlibm.dir/src/e_acosf.c.o -MF CMakeFiles/openlibm.dir/src/e_acosf.c.o.d -o CMakeFiles/openlibm.dir/src/e_acosf.c.o -c /home/fbordeu/PythonLibs/Experiments/pyodide/cmakebuild/wheel/cp313-cp313-emscripten_4_0_9_wasm32/openlibm-prefix/src/openlibm/src/e_acosf.c
clang: error: unsupported option '-march=' for target 'wasm32-unknown-emscripten'

and if I remove the "-march=..." I get:

"error: unknown FP unit 'sse'"

does anyone compiled openlibm using emscripten successfully?

Felipe

[inkydragon]

wasm support was added in #192
make ARCH=wasm32 should work.
It seems that CMake builds do not support wasm targets.

I'm not familiar with emscripten, but the flags used by both should be similar:

clang   -fno-builtin -fno-strict-aliasing -O3 -fPIC -ffreestanding -nostdlib -nostdinc --target=wasm32-unknown-unknown -std=c99 -Wall -I/mnt/j/JuliaMath/openlibm -I/mnt/j/JuliaMath/openlibm/include -I/mnt/j/JuliaMath/openlibm/wasm32 -I/mnt/j/JuliaMath/openlibm/src -DASSEMBLER -D__BSD_VISIBLE -Wno-implicit-function-declaration -c bsdsrc/b_tgamma.c -o bsdsrc/b_tgamma.c.o