From 7e05355a08255f508d334eded96095e0bde06e2e Mon Sep 17 00:00:00 2001
From: Mike Pall <mike>
Date: Tue, 22 Mar 2016 22:16:12 +0100
Subject: [PATCH] Fix install for cross-builds.

---
 Makefile         | 28 +++++++++++++++++-----------
 doc/install.html |  9 ++++++---
 2 files changed, 23 insertions(+), 14 deletions(-)

diff --git a/Makefile b/Makefile
index d5b7d723..eb9572d8 100644
--- a/Makefile
+++ b/Makefile
@@ -46,17 +46,18 @@ INSTALL_PKGCONFIG= $(INSTALL_LIB)/pkgconfig
 INSTALL_TNAME= luajit-$(VERSION)
 INSTALL_TSYMNAME= luajit
 INSTALL_ANAME= libluajit-$(ABIVER).a
-INSTALL_SONAME= libluajit-$(ABIVER).so.$(MAJVER).$(MINVER).$(RELVER)
-INSTALL_SOSHORT= libluajit-$(ABIVER).so
-INSTALL_DYLIBNAME= libluajit-$(ABIVER).$(MAJVER).$(MINVER).$(RELVER).dylib
+INSTALL_SOSHORT1= libluajit-$(ABIVER).so
+INSTALL_SOSHORT2= libluajit-$(ABIVER).so.$(MAJVER)
+INSTALL_SONAME= $(INSTALL_SOSHORT2).$(MINVER).$(RELVER)
 INSTALL_DYLIBSHORT1= libluajit-$(ABIVER).dylib
 INSTALL_DYLIBSHORT2= libluajit-$(ABIVER).$(MAJVER).dylib
+INSTALL_DYLIBNAME= libluajit-$(ABIVER).$(MAJVER).$(MINVER).$(RELVER).dylib
 INSTALL_PCNAME= luajit.pc
 
 INSTALL_STATIC= $(INSTALL_LIB)/$(INSTALL_ANAME)
 INSTALL_DYN= $(INSTALL_LIB)/$(INSTALL_SONAME)
-INSTALL_SHORT1= $(INSTALL_LIB)/$(INSTALL_SOSHORT)
-INSTALL_SHORT2= $(INSTALL_LIB)/$(INSTALL_SOSHORT)
+INSTALL_SHORT1= $(INSTALL_LIB)/$(INSTALL_SOSHORT1)
+INSTALL_SHORT2= $(INSTALL_LIB)/$(INSTALL_SOSHORT2)
 INSTALL_T= $(INSTALL_BIN)/$(INSTALL_TNAME)
 INSTALL_TSYM= $(INSTALL_BIN)/$(INSTALL_TSYMNAME)
 INSTALL_PC= $(INSTALL_PKGCONFIG)/$(INSTALL_PCNAME)
@@ -87,12 +88,17 @@ FILES_JITLIB= bc.lua v.lua dump.lua dis_x86.lua dis_x64.lua dis_arm.lua \
 	      dis_ppc.lua dis_mips.lua dis_mipsel.lua bcsave.lua vmdef.lua
 
 ifeq (,$(findstring Windows,$(OS)))
-  ifeq (Darwin,$(shell uname -s))
-    INSTALL_SONAME= $(INSTALL_DYLIBNAME)
-    INSTALL_SHORT1= $(INSTALL_LIB)/$(INSTALL_DYLIBSHORT1)
-    INSTALL_SHORT2= $(INSTALL_LIB)/$(INSTALL_DYLIBSHORT2)
-    LDCONFIG= :
-  endif
+  HOST_SYS:= $(shell uname -s)
+else
+  HOST_SYS= Windows
+endif
+TARGET_SYS?= $(HOST_SYS)
+
+ifeq (Darwin,$(TARGET_SYS))
+  INSTALL_SONAME= $(INSTALL_DYLIBNAME)
+  INSTALL_SOSHORT1= $(INSTALL_DYLIBSHORT1)
+  INSTALL_SOSHORT2= $(INSTALL_DYLIBSHORT2)
+  LDCONFIG= :
 endif
 
 ##############################################################################
diff --git a/doc/install.html b/doc/install.html
index 6c0689ac..a34f39f0 100644
--- a/doc/install.html
+++ b/doc/install.html
@@ -344,9 +344,12 @@ target OS differ, or you'll get assembler or linker errors. E.g. if
 you're compiling on a Windows or OSX host for embedded Linux or Android,
 you need to add <tt>TARGET_SYS=Linux</tt> to the examples below. For a
 minimal target OS, you may need to disable the built-in allocator in
-<tt>src/Makefile</tt> and use <tt>TARGET_SYS=Other</tt>. The examples
-below only show some popular targets &mdash; please check the comments
-in <tt>src/Makefile</tt> for more details.
+<tt>src/Makefile</tt> and use <tt>TARGET_SYS=Other</tt>. Don't forget to
+specify the same <tt>TARGET_SYS</tt> for the install step, too.
+</p>
+<p>
+The examples below only show some popular targets &mdash; please check
+the comments in <tt>src/Makefile</tt> for more details.
 </p>
 <pre class="code">
 # Cross-compile to a 32 bit binary on a multilib x64 OS