X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/5989a6d624a0a270ec5be99747eb431f701912a4..427a0433e197346292295082645ebfea2e050adf:/CMakeLists.txt

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 366f0e38f7..f702831160 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -21,12 +21,8 @@ set(SIMGRID_VERSION_STRING "SimGrid version ${release_version}")
 set(libsimgrid_version "${release_version}")
 
 # Basic checks on cmake
-cmake_minimum_required(VERSION 3.5)
-#for lto, to avoid warning (should be removed when switching to requiring cmake >= 3.9)
-if(NOT CMAKE_VERSION VERSION_LESS "3.9")
-  cmake_policy(SET CMP0069 NEW)
-endif()
-# once we move >= 3.13, we should use target_link_option in examples/sthread
+cmake_minimum_required(VERSION 3.12)
+# once we move CMake to >= 3.13, we should use target_link_option in examples/sthread
 message(STATUS "Cmake version ${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION}.${CMAKE_PATCH_VERSION}")
 set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} ${CMAKE_HOME_DIRECTORY}/tools/cmake/Modules)
 
@@ -132,21 +128,11 @@ if(NOT PERL_FOUND)
 endif()
 
 # tesh.py needs python 3 (or the module python-subprocess32 on python2.8+)
-if(CMAKE_VERSION VERSION_LESS "3.12")
-  set(PythonInterp_FIND_VERSION 3)
-  set(PythonInterp_FIND_VERSION_COUNT 1)
-  set(PythonInterp_FIND_VERSION_MAJOR 3)
-  include(FindPythonInterp)
-  if(NOT PYTHONINTERP_FOUND)
-    message(FATAL_ERROR "Please install Python (version 3 or higher) to compile SimGrid.")
-  endif()
-else()
-  find_package(Python3 COMPONENTS Interpreter Development)
-  if(NOT Python3_Interpreter_FOUND)
-    message(FATAL_ERROR "Please install Python (version 3 or higher) to compile SimGrid.")
-  endif()
-  set(PYTHON_EXECUTABLE ${Python3_EXECUTABLE})
+find_package(Python3 COMPONENTS Interpreter)
+if(NOT Python3_Interpreter_FOUND)
+  message(FATAL_ERROR "Please install Python (version 3 or higher) to compile SimGrid.")
 endif()
+set(PYTHON_EXECUTABLE ${Python3_EXECUTABLE})
 
 SET(LIBRARY_OUTPUT_PATH ${CMAKE_BINARY_DIR}/lib)
 
@@ -162,7 +148,6 @@ include_directories(
 set(INTERNAL_INCLUDES
   ${CMAKE_BINARY_DIR}
   ${CMAKE_HOME_DIRECTORY}
-  ${CMAKE_HOME_DIRECTORY}/src/include
   )
 
 if(enable_smpi)
@@ -179,17 +164,16 @@ set(SIMGRID_DEP "-lm")
 ### Determine the assembly flavor that we need today
 set(HAVE_RAW_CONTEXTS 0)
 include(CMakeDetermineSystem)
+foreach(arch i686 x86_64 arm64)
+  set(SIMGRID_PROCESSOR_${arch} 0)
+endforeach()
 IF(CMAKE_SYSTEM_PROCESSOR MATCHES ".86|AMD64|amd64")
   IF(CMAKE_SIZEOF_VOID_P EQUAL 4) # 32 bits
     message(STATUS "System processor: i686 (${CMAKE_SYSTEM_PROCESSOR}, 32 bits)")
     set(SIMGRID_PROCESSOR_i686 1)
-    set(SIMGRID_PROCESSOR_x86_64 0)
-    set(SIMGRID_PROCESSOR_arm64 0)
   ELSE()
     message(STATUS "System processor: x86_64 (${CMAKE_SYSTEM_PROCESSOR}, 64 bits)")
-    set(SIMGRID_PROCESSOR_i686 0)
     set(SIMGRID_PROCESSOR_x86_64 1)
-    set(SIMGRID_PROCESSOR_arm64 0)
   ENDIF()
   if(CMAKE_SIZEOF_VOID_P EQUAL 4 AND CMAKE_SYSTEM_PROCESSOR STREQUAL "x86_64")
     message(STATUS "Disable fast raw contexts on x32 ABI.")
@@ -198,14 +182,9 @@ IF(CMAKE_SYSTEM_PROCESSOR MATCHES ".86|AMD64|amd64")
   endif()
 ELSEIF(CMAKE_SYSTEM_PROCESSOR MATCHES "aarch64")
   message(STATUS "System processor: arm64 (${CMAKE_SYSTEM_PROCESSOR}, 64 bits)")
-  set(SIMGRID_PROCESSOR_i686 0)
-  set(SIMGRID_PROCESSOR_x86_64 0)
   set(SIMGRID_PROCESSOR_arm64 1)
 ELSE()
   message(STATUS "System processor (${CMAKE_SYSTEM_PROCESSOR}) not explicitly accounted for")
-  set(SIMGRID_PROCESSOR_i686 0)
-  set(SIMGRID_PROCESSOR_x86_64 0)
-  set(SIMGRID_PROCESSOR_arm64 0)
 ENDIF()
 
 include(CheckFunctionExists)
@@ -776,15 +755,17 @@ if((NOT DEFINED enable_python) OR enable_python)
       set(pybind11_FOUND OFF)
     endif()
   endif()
+endif()
 
-  if(NOT PYTHONLIBS_FOUND AND NOT Python3_Development_FOUND)
-    message(STATUS "Python libs not found. Turn pybind11 off.")
-
-    set(pybind11_FOUND OFF)
-  endif()
+find_package(Python3 COMPONENTS Development)
+if(NOT Python3_Development_FOUND OR NOT pybind11_FOUND)
+  message(STATUS "SimGrid Python bindings cannot be built on this system.")
+  set(default_enable_python OFF)
+else()
+  set(default_enable_python ON)
 endif()
 
-option(enable_python "Whether the Python bindings are activated." ${pybind11_FOUND}) # ON by default if dependencies are met
+option(enable_python "Whether the Python bindings are activated." ${default_enable_python}) # ON by default if dependencies are met
 
 if("${CMAKE_SYSTEM}" MATCHES "FreeBSD" AND enable_model-checking AND enable_python)
   message(WARNING "FreeBSD + Model-Checking + Python = too much for now. Disabling the Python bindings.")
@@ -792,6 +773,9 @@ if("${CMAKE_SYSTEM}" MATCHES "FreeBSD" AND enable_model-checking AND enable_pyth
 endif()
 
 if(enable_python)
+  if(NOT Python3_Development_FOUND)
+    message(FATAL_ERROR "Please install the development components of Python (python3-dev on Debian) to build the Python bindings (or disable that option).")
+  endif()
   if(pybind11_FOUND)
     message(STATUS "Found pybind11.")
     if(NOT enable_lto)