From 9cebcd69efd4587e3ac56b23e488fbbc9b359f48 Mon Sep 17 00:00:00 2001
From: Manuel Herrmann <0@0x17.de>
Date: Tue, 16 Apr 2019 23:59:57 +0200
Subject: makefile: describe mapping from amd64 to x86_64

---
 makefile | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/makefile b/makefile
index c651c3d18..4bc84492a 100644
--- a/makefile
+++ b/makefile
@@ -39,7 +39,12 @@ endif
 
 endif
 
-# map architecture amd64 to x86_64
+# conditionally map ARCH from amd64 to x86_64 if set from the outside
+#
+# Some OS provide a definition for $(ARCH) through an environment
+# variable. It might be set to amd64 which implies x86_64. Since e.g.
+# luajit expects either i386 or x86_64, the value amd64 is transformed
+# to match a directory for a platform dependent implementation.
 ARCH 		:=$(if $(findstring amd64,$(ARCH)),x86_64,$(ARCH))
 
 xmake_dir_install   :=$(prefix)/share/xmake
-- 
cgit v1.3.1