From da86d1c0bdf02cc9e4b3608e6dbdca2cc094df28 Mon Sep 17 00:00:00 2001
From: Markus Blatt <markus@dr-blatt.de>
Date: Fri, 15 Sep 2017 11:17:40 +0200
Subject: [PATCH] Introduced mandatory call to project in top level
 CMakeLists.txt

Somehow this was never called in the OPM modules. But the CMake documentation
actually says:
"The top-level ``CMakeLists.txt`` file for a project must contain a
literal, direct call to the ``project()`` command; loading one
through the ``include()`` command is not sufficient.  If no such
call exists CMake will implicitly add one to the top that enables the
default languages (``C`` and ``CXX``).
"

Without it some variables (like CMAKE_PROJECT_NAME) are not correctly defined.
---
 CMakeLists.txt | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 4a9250e82..5a70f6f8e 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -14,6 +14,9 @@
 #                                                                         #
 ###########################################################################
 
+# Mandatory call to project
+project(opm-simulators CXX)
+
 cmake_minimum_required (VERSION 2.8)
 
 set( OPM_COMMON_ROOT "" CACHE PATH "Root directory containing OPM related cmake modules")