Index: compiler-rt/trunk/lib/asan/asan_report.cc
===================================================================
--- compiler-rt/trunk/lib/asan/asan_report.cc
+++ compiler-rt/trunk/lib/asan/asan_report.cc
@@ -471,7 +471,7 @@
   // previously. That's unfortunate, but I have no better solution,
   // especially given that the alloca may be from entirely different place
   // (e.g. use-after-scope, or different thread's stack).
-#if defined(__powerpc64__) && defined(__BIG_ENDIAN__)
+#if defined(__powerpc64__) && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
   // On PowerPC64 ELFv1, the address of a function actually points to a
   // three-doubleword data structure with the first field containing
   // the address of the function's code.
Index: compiler-rt/trunk/lib/sanitizer_common/sanitizer_symbolizer_libcdep.cc
===================================================================
--- compiler-rt/trunk/lib/sanitizer_common/sanitizer_symbolizer_libcdep.cc
+++ compiler-rt/trunk/lib/sanitizer_common/sanitizer_symbolizer_libcdep.cc
@@ -209,9 +209,9 @@
     const char* const kSymbolizerArch = "--default-arch=arm64";
 #elif defined(__arm__)
     const char* const kSymbolizerArch = "--default-arch=arm";
-#elif defined(__powerpc64__) && defined(__BIG_ENDIAN__)
+#elif defined(__powerpc64__) && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
     const char* const kSymbolizerArch = "--default-arch=powerpc64";
-#elif defined(__powerpc64__) && defined(__LITTLE_ENDIAN__)
+#elif defined(__powerpc64__) && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
     const char* const kSymbolizerArch = "--default-arch=powerpc64le";
 #else
     const char* const kSymbolizerArch = "--default-arch=unknown";
Index: compiler-rt/trunk/lib/tsan/rtl/tsan_interceptors.cc
===================================================================
--- compiler-rt/trunk/lib/tsan/rtl/tsan_interceptors.cc
+++ compiler-rt/trunk/lib/tsan/rtl/tsan_interceptors.cc
@@ -87,10 +87,10 @@
 #endif
 
 #if defined(__x86_64__) || defined(__mips__) \
-  || (defined(__powerpc64__) && defined(__BIG_ENDIAN__))
+  || (defined(__powerpc64__) && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__)
 #define PTHREAD_ABI_BASE  "GLIBC_2.3.2"
 #elif defined(__aarch64__) || (defined(__powerpc64__) \
-  && defined(__LITTLE_ENDIAN__))
+  && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__)
 #define PTHREAD_ABI_BASE  "GLIBC_2.17"
 #endif
 
Index: compiler-rt/trunk/lib/ubsan/ubsan_value.cc
===================================================================
--- compiler-rt/trunk/lib/ubsan/ubsan_value.cc
+++ compiler-rt/trunk/lib/ubsan/ubsan_value.cc
@@ -83,7 +83,7 @@
 #endif
       case 32: {
         float Value;
-#if defined(__BIG_ENDIAN__)
+#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
        // For big endian the float value is in the last 4 bytes.
        // On some targets we may only have 4 bytes so we count backwards from
        // the end of Val to account for both the 32-bit and 64-bit cases.