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switch to clang-unwrapped, build IRRT with wasm32

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This commit is contained in:
Sebastien Bourdeauducq 2022-01-09 10:53:58 +08:00
parent 096193f7ab
commit b88f17ed42
2 changed files with 9 additions and 3 deletions
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2
flake.nix
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@ -177,7 +177,7 @@
name = "nac3-dev-shell";
buildInputs = with pkgs; [
packages.x86_64-linux.llvm-nac3
clang_13
llvmPackages_13.clang-unwrapped # for IRRT
lld_13
cargo
cargo-insta

10
nac3core/build.rs
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@ -6,10 +6,16 @@ use std::{
};
fn main() {
let out_dir = env::var("OUT_DIR").unwrap();
const FILE: &str = "src/codegen/irrt/irrt.c";
println!("cargo:rerun-if-changed={}", FILE);
/*
* HACK: Sadly, clang doesn't let us emit generic LLVM bitcode.
* Compiling for WASM32 and filtering the output with regex is the closest we can get.
*/
const FLAG: &[&str] = &[
"--target=wasm32",
FILE,
"-O3",
"-emit-llvm",
@ -46,7 +52,7 @@ fn main() {
let mut llvm_as = Command::new("llvm-as")
.stdin(Stdio::piped())
.arg("-o")
.arg(&format!("{}/irrt.bc", out_dir))
.arg(&format!("{}/irrt.bc", env::var("OUT_DIR").unwrap()))
.spawn()
.unwrap();
llvm_as.stdin.as_mut().unwrap().write_all(filtered_output.as_bytes()).unwrap();