feat : project is now correctly initialized

CMakeLists.txt

 cmake_minimum_required(VERSION 3.15)
 
-file(READ "${CMAKE_SOURCE_DIR}/version.txt" version)
-file(READ "${CMAKE_SOURCE_DIR}/project_name.txt" project)
+file(STRINGS "${CMAKE_SOURCE_DIR}/version.txt" version)
 
-message(STATUS "Project name: ${project}")
+project(aidge_backend_opencv
+        VERSION ${version}
+        DESCRIPTION "Opencv implementations of the operators and tensor of aidge framework"
+        LANGUAGES CXX)
+
+message(STATUS "Project name: ${CMAKE_PROJECT_NAME}")
 message(STATUS "Project version: ${version}")
 
 # Note : project name is {project} and python module name is also {project} 
-set(module_name _${project}) # target name
-
-
-project(${project})
+set(module_name _${CMAKE_PROJECT_NAME}) # target name
 
 ##############################################
 # Define options
@@ -92,9 +93,9 @@ endif()
 # Installation instructions
 
 include(GNUInstallDirs)
-set(INSTALL_CONFIGDIR ${CMAKE_INSTALL_LIBDIR}/cmake/${project})
+set(INSTALL_CONFIGDIR ${CMAKE_INSTALL_LIBDIR}/cmake/${CMAKE_PROJECT_NAME})
 
-install(TARGETS ${module_name} EXPORT ${project}-targets
+install(TARGETS ${module_name} EXPORT ${CMAKE_PROJECT_NAME}-targets
   LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
   ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
   RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
@@ -105,8 +106,8 @@ install(DIRECTORY include/ DESTINATION ${CMAKE_INSTALL_INCLUDEDIR})
 
 #Export the targets to a script
 
-install(EXPORT ${project}-targets
- FILE "${project}-targets.cmake"
+install(EXPORT ${CMAKE_PROJECT_NAME}-targets
+ FILE "${CMAKE_PROJECT_NAME}-targets.cmake"
  DESTINATION ${INSTALL_CONFIGDIR}
  COMPONENT ${module_name} 
 )  
@@ -115,27 +116,27 @@ install(EXPORT ${project}-targets
 include(CMakePackageConfigHelpers)
 
 write_basic_package_version_file(
-    "${CMAKE_CURRENT_BINARY_DIR}/${project}-config-version.cmake"
+    "${CMAKE_CURRENT_BINARY_DIR}/${CMAKE_PROJECT_NAME}-config-version.cmake"
     VERSION ${version}
     COMPATIBILITY AnyNewerVersion
 )
 
-configure_package_config_file("${project}-config.cmake.in"
-    "${CMAKE_CURRENT_BINARY_DIR}/${project}-config.cmake"
+configure_package_config_file("${CMAKE_PROJECT_NAME}-config.cmake.in"
+    "${CMAKE_CURRENT_BINARY_DIR}/${CMAKE_PROJECT_NAME}-config.cmake"
     INSTALL_DESTINATION ${INSTALL_CONFIGDIR}
 )
 
 #Install the config, configversion and custom find modules
 install(FILES
-    "${CMAKE_CURRENT_BINARY_DIR}/${project}-config.cmake"
-    "${CMAKE_CURRENT_BINARY_DIR}/${project}-config-version.cmake"
+    "${CMAKE_CURRENT_BINARY_DIR}/${CMAKE_PROJECT_NAME}-config.cmake"
+    "${CMAKE_CURRENT_BINARY_DIR}/${CMAKE_PROJECT_NAME}-config-version.cmake"
     DESTINATION ${INSTALL_CONFIGDIR}
 )
 
 ##############################################
 ## Exporting from the build tree
-export(EXPORT ${project}-targets
-    FILE "${CMAKE_CURRENT_BINARY_DIR}/${project}-targets.cmake")
+export(EXPORT ${CMAKE_PROJECT_NAME}-targets
+    FILE "${CMAKE_CURRENT_BINARY_DIR}/${CMAKE_PROJECT_NAME}-targets.cmake")
 
 
 ##############################################