>From 272a7a8169d01c39fef999dd19e8509967a2938e Mon Sep 17 00:00:00 2001
From: Michele La Monaca <address@hidden>
Date: Thu, 31 Jan 2013 20:43:35 +0100
Subject: [PATCH] tentative platform auto-detection mechanism

Signed-off-by: Peter Bex <address@hidden>
---
 GNUmakefile | 28 +++++++++++++++++++++++++++-
 NEWS        |  2 ++
 2 files changed, 29 insertions(+), 1 deletion(-)

diff --git a/GNUmakefile b/GNUmakefile
index 270b72f..52b2e3f 100644
--- a/GNUmakefile
+++ b/GNUmakefile
@@ -33,8 +33,34 @@ ifneq ($(CONFIG),)
 include $(CONFIG)
 endif
 
+ifneq ($(OS),Windows_NT)
+        SYSTEM := $(shell uname -s)
+else ifdef MSYSTEM
+        SYSTEM = windows
+        PLATFORM ?= mingw-msys
+else ifdef PWD
+        SYSTEM = windows
+        PLATFORM ?= cygwin
+else
+        SYSTEM = windows
+        PLATFORM ?= mingw
+endif
+
+ifeq ($(SYSTEM),Linux)
+        PLATFORM ?= linux
+else ifeq ($(SYSTEM),Darwin)
+        PLATFORM ?= macosx
+else ifeq ($(filter $(SYSTEM),FreeBSD NetBSD OpenBSD DragonFly),$(SYSTEM))
+        PLATFORM ?= bsd
+else ifeq ($(SYSTEM),SunOS)
+        PLATFORM ?= solaris
+else ifeq ($(SYSTEM),Haiku)
+        PLATFORM ?= haiku
+endif
+
 ifndef PLATFORM
-$(info Please select your target platform by running one of the following commands:)
+$(info Unable to auto-detected the platform. Please select your target)
+$(info platform by running one of the following commands:)
 $(info )
 $(foreach mf, $(wildcard Makefile.*), $(info $(MAKE) PLATFORM=$(mf:Makefile.%=%)))
 $(info )
diff --git a/NEWS b/NEWS
index ad77c58..ca2d578 100644
--- a/NEWS
+++ b/NEWS
@@ -4,6 +4,8 @@
   - csc: added "-oi"/"-ot" options as alternatives to "-emit-inline-file"
     and "-emit-type-file", respectively; "-n" has been deprecated.
 
+- Build system
+  - Added PLATFORM detection for common platforms.  Thanks to Michele La Monaca.
 
 4.8.1
 
-- 
1.8.0.1