From ba33366d454699ac6791518e7ade0dee76c23e3b Mon Sep 17 00:00:00 2001
From: Philippe Coval <philippe.coval@open.eurogiciel.org>
Date: Thu, 29 Jan 2015 09:29:58 +0100
Subject: [PATCH] build: warn about building into sources' dir

If you build in the source tree, you'll fill the sources with objects and create a mess.
Please prefer to build outside sources tree into a temporary place,

prefer :
   cmake build

to :
   cmake .

But If you trust your build tools and cleanup is done on each build
you can use current dir without any risk.

Bug: https://github.com/intel-iot-devkit/upm/pull/75
Change-Id: Ieb914ca359047df8b5dba1c2174e6c61e4526677
Signed-off-by: Philippe Coval <philippe.coval@open.eurogiciel.org>
Signed-off-by: Mihai Tudor Panu <mihai.tudor.panu@intel.com>
---
 CMakeLists.txt | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 1ffaa23a..1956f4a2 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,6 +1,10 @@
 cmake_minimum_required (VERSION 2.8.11)
 project (upm)
 
+if ("${CMAKE_SOURCE_DIR}" STREQUAL "${CMAKE_BINARY_DIR}")
+message("WARNING: building into sources dir can be risky, prefer other directory")
+endif ()
+
 find_package (SWIG)
 if (SWIG_FOUND)
   include (${SWIG_USE_FILE})