list_remove BOOST_LIBS_MZ signals &&
default_pre_build &&
cd $SOURCE_DIRECTORY &&
if is_depends_enabled $SPELL python3;then
  sed -i 's/python$/&3/;s/sys.prefix/(&)/' bootstrap.sh
fi &&
sed '/char\* next_in/s;s->next_in;const_cast<zlib::byte*>(&);' \
    -i libs/iostreams/src/zlib.cpp &&
message "patching done"