anchor.diff:  FROM tim03/gcc:6.3
  -MAINTAINER Chen, Wenli <chenwenli@chenwenli.com>
  +LABEL MAINTAINER Chen, Wenli <chenwenli@chenwenli.com>
   
   ENV 	PRJROOT=/opt/cross/w64 \
   	TARGET=x86_64-w64-mingw32 
  
positive.code:  && cd $BUILD \ 
   && rm -rf build-binutils binutils-2.27 \
  # mingw headers
   && curl -L http://downloads.sourceforge.net/project/mingw-w64/mingw-w64/mingw-w64-release/mingw-w64-v5.0.0.tar.bz2 | tar jxf - \
   && mkdir -p $BUILD/build-mingw-w64-header/ \
   && cd $BUILD/build-mingw-w64-header/ \
   && ../mingw-w64-v5.0.0/configure --host=${TARGET} --prefix=${TARGET_PREFIX} --with-sysroot=${TARGET_PREFIX} --without-crt \
   && make \
   && make install \
   && cd $BUILD \
  
negative.code: # mingw CRT
   && mkdir -p $BUILD/build-mingw-w64-crt/ \
   && cd $BUILD/build-mingw-w64-crt/ \
   && ../mingw-w64-v5.0.1/configure --host=$TARGET --prefix=$TARGET_PREFIX --without-header --with-sysroot=${TARGET_PREFIX} \
   && make \
   && make install \
   && cd $BUILD \
   && rm -rf build-mingw-w64-crt mingw-w64-v5.0.1 \
  # gcc phase 2
   && cd $BUILD/build-gcc \
   && make all \
  