[cmake] Bump cmake version requirement to 2.8.12 and properly set tri…

…qs version requirement

CMakeLists.txt

@@ -5,8 +5,8 @@ set (HUBBARD1_RELEASE "1.4.0")
 # Append triqs installed files to the cmake load path
 list(APPEND CMAKE_MODULE_PATH ${TRIQS_PATH}/share/triqs/cmake)
 
-# start configuration 
-cmake_minimum_required(VERSION 2.8)
+# start configuration
+cmake_minimum_required(VERSION 2.8.12)
 project(hubbardI CXX Fortran)
 set(CMAKE_BUILD_TYPE Release)
 enable_testing()
@@ -15,22 +15,17 @@ enable_testing()
 option(BUILD_SHARED_LIBS "Build shared libraries" ON)
 
 # Load TRIQS, including all predefined variables from TRIQS installation
-find_package(TRIQS REQUIRED)
+find_package(TRIQS 1.4 REQUIRED)
 
 if (NOT ${TRIQS_WITH_PYTHON_SUPPORT})
  MESSAGE(FATAL_ERROR "Hubbard I application require Python support in TRIQS")
 endif()
 
-# Check that versions are compatible
-if(NOT HUBBARD1_VERSION EQUAL TRIQS_VERSION)
-  message(FATAL_ERROR "The application version is not compatible with the TRIQS library (TRIQS library version: ${TRIQS_VERSION} while this application version: ${HUBBARD1_VERSION})")
-endif()
-
 # We want to be installed in the TRIQS tree
 set(CMAKE_INSTALL_PREFIX ${TRIQS_PATH})
 
 # Codes and tests
-add_subdirectory(fortran) 
+add_subdirectory(fortran)
 add_subdirectory(python)
 add_subdirectory(test)