Hi,

antimony currently hardcodes CXXFLAGS in CMakeLists.txt.

Please consider appending to CXXFLAGS instead, to ensure the package
uses the default build flags set by dpkg-buildflags.

Something like this should do the trick:

  set(CMAKE_CXX_FLAGS "$ENV{CXXFLAGS} -Wall -Wextra -Werror=switch")

Thanks,
  Emanuele