export CFLAGS="-ggdb3 -O2"
fi
-if [[ ${CI_TAGS} == *'coop-gc'* ]]; then EXTRA_CONF_FLAGS="${EXTRA_CONF_FLAGS} --with-cooperative-gc=yes"; export MONO_CHECK_MODE=gc,thread; fi
+if [[ ${CI_TAGS} == *'coop-gc'* ]]; then EXTRA_CONF_FLAGS="${EXTRA_CONF_FLAGS} --with-cooperative-gc=yes"; fi
+
+if [[ ${CI_TAGS} == *'checked-coop'* ]]; then EXTRA_CONF_FLAGS="${EXTRA_CONF_FLAGS} --enable-checked-build=gc,thread"; export MONO_CHECK_MODE=gc,thread; fi
+if [[ ${CI_TAGS} == *'checked-all'* ]]; then EXTRA_CONF_FLAGS="${EXTRA_CONF_FLAGS} --enable-checked-build=all"; export MONO_CHECK_MODE=all; fi
if [[ ${label} == 'osx-i386' ]]; then EXTRA_CONF_FLAGS="${EXTRA_CONF_FLAGS} --with-libgdiplus=/Library/Frameworks/Mono.framework/Versions/Current/lib/libgdiplus.dylib --build=i386-apple-darwin11.2.0"; fi
if [[ ${label} == 'osx-amd64' ]]; then EXTRA_CONF_FLAGS="${EXTRA_CONF_FLAGS} --with-libgdiplus=/Library/Frameworks/Mono.framework/Versions/Current/lib/libgdiplus.dylib "; fi