FROM larskanis/rake-compiler-dock-mri:0.7.2

RUN find / -name rbconfig.rb | while read f ; do sed -i 's/0x0501/0x0600/' $f ; done
RUN find / -name win32.h | while read f ; do sed -i 's/gettimeofday/rb_gettimeofday/' $f ; done
RUN find / -name libwinpthread.dll.a | xargs rm
RUN find / -name libwinpthread-1.dll | xargs rm
RUN find / -name *msvcrt-ruby*.dll.a | while read f ; do n=`echo $f | sed s/.dll//` ; mv $f $n ; done
RUN apt-get install -y g++-multilib

# Make the system to have GLIBC 2.12 instead of 2.23 so that
# generated ruby package can run on CentOS 6 with GLIBC 2.12
RUN sed -i 's/__GLIBC_MINOR__\t23/__GLIBC_MINOR__\t12/' /usr/include/features.h

# Use posix pthread for mingw so that C++ standard library for thread could be
# available such as std::thread, std::mutex, so on.
# https://sourceware.org/pthreads-win32/
RUN printf "1\n" | update-alternatives --config x86_64-w64-mingw32-gcc && \
    printf "1\n" | update-alternatives --config x86_64-w64-mingw32-g++ && \
    printf "1\n" | update-alternatives --config i686-w64-mingw32-gcc && \
    printf "1\n" | update-alternatives --config i686-w64-mingw32-g++

CMD bash