+printf "C compiler supports address sanitizer... "
+test_cmdline="${CC} ${CFLAGS} ${CPPFLAGS} -fsanitize=address minimal.c ${LDFLAGS} -o minimal"
+if ${test_cmdline} >/dev/null 2>&1 && ./minimal
+then
+ printf "Yes.\n"
+ have_asan=1
+else
+ printf "Nope, skipping those tests.\n"
+ have_asan=0
+fi
+unset test_cmdline
+
+printf "C compiler supports thread sanitizer... "
+test_cmdline="${CC} ${CFLAGS} ${CPPFLAGS} -fsanitize=thread minimal.c ${LDFLAGS} -o minimal"
+if ${test_cmdline} >/dev/null 2>&1 && ./minimal
+then
+ printf "Yes.\n"
+ have_tsan=1
+else
+ printf "Nope, skipping those tests.\n"
+ have_tsan=0
+fi
+unset test_cmdline
+