diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index ca017bedb1b4..81d90c3127ef 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2020-03-24  John David Anglin  <danglin@gcc.gnu.org>
+
+	PR lto/94249
+	* config/pa/pa.h (TARGET_CPU_CPP_BUILTINS): Define __BIG_ENDIAN__.
+
 2020-03-24  Tobias Burnus  <tobias@codesourcery.com>
 
 	PR libgomp/81689
diff --git a/gcc/config/pa/pa.h b/gcc/config/pa/pa.h
index 8800191a9a86..b3eb81d7b374 100644
--- a/gcc/config/pa/pa.h
+++ b/gcc/config/pa/pa.h
@@ -171,6 +171,7 @@ do {								\
      builtin_assert("machine=hppa");				\
      builtin_define("__hppa");					\
      builtin_define("__hppa__");				\
+     builtin_define("__BIG_ENDIAN__");				\
      if (TARGET_PA_20)						\
        builtin_define("_PA_RISC2_0");				\
      else if (TARGET_PA_11)					\