handle both endianness macros defined

boostorg · Jun 12, 2022 · e412d0c · e412d0c
1 parent f1b9420
commit e412d0c
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/include/boost/json/detail/config.hpp b/include/boost/json/detail/config.hpp
@@ -266,6 +266,8 @@
 # else
 #  error The Boost.JSON library could not determine the endianness of this platform. Define either BOOST_JSON_BIG_ENDIAN or BOOST_JSON_LITTLE_ENDIAN.
 # endif
+#elif defined(BOOST_JSON_BIG_ENDIAN) && defined(BOOST_JSON_LITTLE_ENDIAN)
+# error Both BOOST_JSON_BIG_ENDIAN and BOOST_JSON_LITTLE_ENDIAN are defined. You should define only one of them.
 #endif
 
 BOOST_JSON_NS_BEGIN