From 73c583202e8e54ca56ec0a045eeb4674ca990e75 Mon Sep 17 00:00:00 2001
From: Havard Eidnes <he@uninett.no>
Date: Sat, 2 Jun 2018 22:03:33 +0200
Subject: [PATCH] Fix the endianness test on powerpc so NetBSD/powerpc builds &
 works.

NetBSD/powerpc was mis-categorized as little-endian because
_LITTLE_ENDIAN is defined -- what matters on NetBSD is the value
of _BYTE_ORDER.  Retain the old test in the #else clause.

Add some whitespace for added readability.
---
 src/lj_arch.h | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/src/lj_arch.h b/src/lj_arch.h
index e04c4ee9..13292f64 100644
--- a/src/lj_arch.h
+++ b/src/lj_arch.h
@@ -339,12 +339,21 @@
 #if defined(_SOFT_FLOAT) || defined(_SOFT_DOUBLE)
 #error "No support for PowerPC CPUs without double-precision FPU"
 #endif
-#if defined(_LITTLE_ENDIAN)
-#error "No support for little-endian PowerPC"
+
+#if defined(_BYTE_ORDER) && defined(_LITTLE_ENDIAN)
+# if (_BYTE_ORDER == _LITTLE_ENDIAN)
+#  error "No support for little-endian PowerPC"
+# endif
+#else
+# if defined(_LITTLE_ENDIAN)
+#  error "No support for little-endian PowerPC"
+# endif
 #endif
+
 #if defined(_LP64)
 #error "No support for PowerPC 64 bit mode"
 #endif
+
 #elif LJ_TARGET_MIPS
 #if defined(__mips_soft_float)
 #error "No support for MIPS CPUs without FPU"