anchor.diff:    && cd .. \
     && mkdir objdir \
     && cd objdir \
  -  && ./../gcc-${GCC_VERSION}/configure --prefix=/gcc \
  +  && /tmp/gcc-${GCC_VERSION}/configure --prefix=/gcc-${GCC_VERSION} \
     --mandir=/usr/share/man \
     --infodir=/usr/share/info \
     --build=x86_64-alpine-linux-musl \
     --host=x86_64-alpine-linux-musl \
     --target=x86_64-alpine-linux-musl \
  -  --with-pkgversion="Alpine ${GCC_VERSION}" \
  +  --with-pkgversion="Alpine ${GCC_VERSION} - Starbix" \
     --enable-checking=release \
     --disable-fixed-point \
     --disable-libstdcxx-pch \
  
positive.code:     --with-system-zlib \
      --with-linker-hash-style=gnu"
  
  ENV PATH="/gcc/bin:${PATH}"
  
  RUN apk --no-cache upgrade \
    && apk add --no-cache build-base zlib-dev \
    && mkdir -p /gcc \
    && cd /tmp \
  
negative.code: FROM alpine:3.8
  ARG BUILD_CORES
  
  ARG GCC_VERSION=8.2.0
  
  ARG GCC_CONF=" \
      --prefix=/gcc-${GCC_VERSION} \
      --mandir=/usr/share/man \
      --infodir=/usr/share/info \
      --build=x86_64-alpine-linux-musl \
  