clang --target=wasm32 -O2 -ffreestanding -fno-builtin -nostdlib -Wl,--no-entry -Wl,--export=sin -Wl,--export=cos -o fdlibm.wasm \ s_sin.c s_cos.c k_sin.c k_cos.c e_rem_pio2.c k_rem_pio2.c s_scalbn.c define __LITTLE_ENDIAN for wasm must provide implementation for the functions below # wasm-ld-21: error: /tmp/e_rem_pio2-14e979.o: undefined symbol: fabs # wasm-ld-21: error: /tmp/k_rem_pio2-6d7f33.o: undefined symbol: floor # wasm-ld-21: error: /tmp/s_scalbn-8b4ff9.o: undefined symbol: copysign # wasm-ld-21: error: /tmp/s_scalbn-8b4ff9.o: undefined symbol: copysign # wasm-ld-21: error: /tmp/s_scalbn-8b4ff9.o: undefined symbol: copysign # clang: error: linker command failed with exit code 1 (use -v to see invocation)