CODEWITHSUNDEEP
cllvmwebassemblyemscriptenemcc
user11857517
user11857517

Reputation:

emcc won't run on Mac OSX 10.15, clang-10: error unknown argument: '-fignore-exceptions'

I have a simple hello.c file with the following contents:

#include <emscripten.h>
#include <stdlib.h>
#include <stdio.h>

int main() {
    printf("hello wasm\n");
}

I am trying to compile this into a .html with emscripten emcc command using:

emcc hello.c --emrun -o hello.html

But the output that I get is:

emcc: warning: LLVM version appears incorrect (seeing "10.0", expected "11.0") [-Wversion-check] clang-10: error: unknown argument: '-fignore-exceptions' emcc: error: '/usr/local/opt/llvm/bin/clang -target wasm32-unknown-emscripten -D__EMSCRIPTEN_major__=1 -D__EMSCRIPTEN_minor__=39 -D__EMSCRIPTEN_tiny__=18 -D_LIBCPP_ABI_VERSION=2 -Dunix -D__unix -D__unix__ -Werror=implicit-function-declaration -Xclang -nostdsysteminc -Xclang -isystem/usr/local/Cellar/emscripten/1.39.18/libexec/system/include/compat -Xclang -isystem/usr/local/Cellar/emscripten/1.39.18/libexec/system/include -Xclang -isystem/usr/local/Cellar/emscripten/1.39.18/libexec/system/include/libc -Xclang -isystem/usr/local/Cellar/emscripten/1.39.18/libexec/system/lib/libc/musl/arch/emscripten -Xclang -isystem/usr/local/Cellar/emscripten/1.39.18/libexec/system/local/include -Xclang -isystem/usr/local/Cellar/emscripten/1.39.18/libexec/system/include/SSE -Xclang -isystem/usr/local/Cellar/emscripten/1.39.18/libexec/cache/wasm/include -DEMSCRIPTEN -fignore-exceptions hello.c -Xclang -isystem/usr/local/Cellar/emscripten/1.39.18/libexec/system/include/SDL -c -o /var/folders/74/19dk0c293ps0fmfj5vsqld1w0000gn/T/emscripten_temp_xakv8jzi/hello_0.o -mllvm -combiner-global-alias-analysis=false -mllvm -enable-emscripten-sjlj -mllvm -disable-lsr' failed (1)

I have emscripten and dependencies installed via homebrew. These are the necessary exports in my .zshrc are :

export LLVM="/usr/local/opt/llvm/bin" export BINARYEN="/usr/local/opt/binaryen/bin"

How can I get this to work?

Upvotes: 1

Views: 895

Answers (1)

sbc100
sbc100

Reputation: 3032

emscripten requires llvm tip of tree (11). Its not compatible with LLVM 10 or any other stable version. The simplest way to install emscripten along with a compatible version of llvm is to use emsdk to install rather than homebrew.

Upvotes: 3

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