+AC_ARG_ENABLE([exception-tracer],
+ AS_HELP_STRING([--enable-exception-tracer], [enables building exception tracer]),
+ [build_exception_tracer=${enableval}], [build_exception_tracer=no])
+
+AC_ARG_ENABLE([symbolizer],
+ AS_HELP_STRING([--enable-symbolizer], [try to build symbolizer if possible]),
+ [folly_try_use_symbolizer=${enableval}], [folly_try_use_symbolizer=yes])
+
+folly_use_symbolizer=no
+if test "$folly_try_use_symbolizer" = yes; then
+ if test "$build_os" = "linux-gnu" && test "$have_libdwarf" = yes; then
+ AC_CHECK_HEADER(
+ [elf.h],
+ AC_CHECK_LIB([unwind], [backtrace], [folly_use_symbolizer=yes]),
+ )
+ fi
+fi
+if test "$folly_use_symbolizer" = yes; then
+ AC_DEFINE([USE_SYMBOLIZER], [1], [Define to 1 if we should use the symbolizer in init])
+fi
+
+