From 2b27b8881e56a7be678feeedd48677c0e17143cf Mon Sep 17 00:00:00 2001
From: Johann Dreo <johann.dreo@thalesgroup.com>
Date: Sun, 7 Oct 2012 21:05:47 +0200
Subject: [PATCH] add the ENABLE_OPENMP build flag

---
 eo/CMakeLists.txt | 33 ++++++++++++++++++++-------------
 1 file changed, 20 insertions(+), 13 deletions(-)

diff --git a/eo/CMakeLists.txt b/eo/CMakeLists.txt
index 9bf3781ed..a84a7f2f6 100644
--- a/eo/CMakeLists.txt
+++ b/eo/CMakeLists.txt
@@ -5,21 +5,28 @@
 #####################################################################################
 
 # For eo::mpi
-ENABLE_LANGUAGE(C)
+enable_language(C)
 
 # For openmp parallel
-FIND_PACKAGE(OpenMP)
-IF(OPENMP_FOUND)
-  SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${OpenMP_C_FLAGS}")
-  SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${OpenMP_CXX_FLAGS}")
-ENDIF()
+if(ENABLE_OPENMP)
+    find_package(OpenMP)
+    if(OPENMP_FOUND)
+      set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${OpenMP_C_FLAGS}")
+      set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${OpenMP_CXX_FLAGS}")
+  else()
+      message( "ERROR: You asked for OpenMP but it has not been found." )
+      set(IS_FATAL 1)
+  endif(OPENMP_FOUND)
+endif(ENABLE_OPENMP)
 
-INCLUDE(FindGnuplot)
+if(ENABLE_GNUPLOT)
+    include(FindGnuplot)
+endif(ENABLE_GNUPLOT)
 
-# Set a special flag if the environment is windows (should do the same in a config.g file)
-IF (WIN32)
-  ADD_DEFINITIONS(-D_WINDOWS=1)
-ENDIF (WIN32)
+# set a special flag if the environment is windows (should do the same in a config.g file)
+if (WIN32)
+  add_definitions(-D_WINDOWS=1)
+endif (WIN32)
 
 
 
@@ -28,10 +35,10 @@ ENDIF (WIN32)
 #####################################################################################
 
 # now create config headers
-CONFIGURE_FILE(config.h.cmake ${CMAKE_CURRENT_BINARY_DIR}/config.h)
+configure_file(config.h.cmake ${CMAKE_CURRENT_BINARY_DIR}/config.h)
 
 # now create config install_symlink script file
-CONFIGURE_FILE(install_symlink.py.cmake ${CMAKE_CURRENT_BINARY_DIR}/install_symlink.py)
+configure_file(install_symlink.py.cmake ${CMAKE_CURRENT_BINARY_DIR}/install_symlink.py)
 
 
 ######################################################################################