c2wasm

#!/bin/sh

SCRIPT=$(realpath "$0")
SCRIPTPATH=$(dirname "$SCRIPT")

CLANG="$SCRIPTPATH"/llvm/build/bin/clang
LLC="$SCRIPTPATH"/llvm/build/bin/llc
S2WASM="$SCRIPTPATH"/binaryen/build/bin/s2wasm
WAT2WASM="$SCRIPTPATH"/wabt/build/wat2wasm

if [ ! -x $CLANG ] || [ ! -x $LLC ] || [ ! -x $S2WASM ] || [ ! -x $WAT2WASM ]; then
  echo Run build-all.sh first!
  exit 255
fi

FILENAME="$1"
BASE="${FILENAME%.*}"
EXT="${FILENAME##*.}"

if [ "$#" -ne 1 ] || [ ! "$EXT" = "c" ]; then
  echo "Usage: $0 source.c" >&2
  exit 1
fi

$CLANG -emit-llvm --target=wasm32 -S $BASE.c -o $BASE.ll
if [ "$?" -ne 0 ]; then
  echo "clang failed!" >&2
  exit 2
fi

$LLC -march=wasm32 -filetype=asm $BASE.ll -o $BASE.s
if [ "$?" -ne 0 ]; then
  echo "llc failed!" >&2
  exit 2
fi

$S2WASM $BASE.s -o $BASE.wat
if [ "$?" -ne 0 ]; then
  echo "s2wasm failed!" >&2
  exit 2
fi

$WAT2WASM $BASE.wat -o $BASE.wasm
if [ "$?" -ne 0 ]; then
  echo "wat2wasm failed!" >&2
  exit 2
fi

rm $BASE.ll $BASE.s $BASE.wat