FROM golang:1.16

RUN apt-get update; \
    apt-get install -y build-essential clang yasm

WORKDIR /work

COPY ./go.* ./
RUN go install \
    github.com/minio/asm2plan9s \
    github.com/minio/c2goasm \
    github.com/klauspost/asmfmt/cmd/asmfmt

COPY ./simd/string.h ./string.h
COPY ./simd/string.c ./string.c

RUN clang -S \
    -O2 \
    -mavx2 \
    -masm=intel \
    -mno-red-zone \
    -mstackrealign \
    -mllvm \
    -inline-threshold=1000 \
    -fno-asynchronous-unwind-tables \
    -fno-exceptions \
    -fno-rtti \
    -c string.c

COPY ./simd/string_avx.go ./string_avx.go
RUN c2goasm -a -f ./string.s ./string_avx.s