Dockerfile

FROM alpine:latest AS builder

RUN apk update && apk add build-base git

WORKDIR /

RUN git clone --depth 1 https://github.com/richfelker/musl-cross-make.git /musl-cross-make

WORKDIR /musl-cross-make

ARG TARGET

RUN echo '#!/bin/sh' > /usr/local/bin/static-gcc && \
  echo 'exec gcc -static --static "$@"' >> /usr/local/bin/static-gcc && \
  echo '#!/bin/sh' > /usr/local/bin/static-g++ && \
  echo 'exec g++ -static --static "$@"' >> /usr/local/bin/static-g++ && \
  chmod +x /usr/local/bin/static-gcc /usr/local/bin/static-g++

RUN echo 'COMMON_CONFIG += CC="static-gcc"' > config.mak && \
  echo 'COMMON_CONFIG += CXX="static-g++"' >> config.mak && \
  echo 'COMMON_CONFIG += --disable-shared' >> config.mak && \
  echo "TARGET = ${TARGET}" >> config.mak && \
  echo 'OUTPUT = /musl' >> config.mak

RUN LDFLAGS="-static --static -s -Wl,--strip-all" make && \
    LDFLAGS="-static --static -s -Wl,--strip-all" make install


FROM scratch

COPY --from=builder /musl /musl