Allow to build without distutils (#98)

* Allow to build without distutils

* Drop svn version log

CHANGELOG

@@ -1,5 +1,8 @@
 --- CHANGELOG ---
 
+--- Assimulo-3.5.2 ---
+    * Allow to build without distutils for Python>=3.12 support
+
 --- Assimulo-3.5.1 ---
     * Fixed build with sundials 7.x
     * Added "std=legacy" as default fortran compile flag. 

setup.py

@@ -23,7 +23,16 @@
 import argparse
 from os.path import isfile, join
 import numpy as np
-import numpy.distutils.core as ndc
+try:
+    from numpy.distutils.core import setup
+    import numpy.distutils as nd
+    from numpy.distutils.fcompiler import intel
+    have_nd = True
+except ImportError:
+    from setuptools import setup
+    have_nd = False
+import Cython
+from Cython.Build import cythonize
 
 def str2bool(v):
     return v.lower() in ("yes", "true", "t", "1")
@@ -62,30 +71,13 @@ def remove_prefix(name, prefix):
 
 logging.basicConfig(level=getattr(logging,args[0].log),format='%(levelname)s:%(message)s',filename=args[0].log_file)
 logging.debug('setup.py called with the following optional args\n %s\n argument parsing completed.',vars(args[0]))
-try:
-    from subprocess import Popen, PIPE
-    _p = Popen(["svnversion", "."], stdout=PIPE)
-    revision = _p.communicate()[0].decode('ascii')
-except Exception:
-    revision = "unknown"
-logging.debug('Source from svn revision {}'.format(revision[:-1])) # exclude newline 
 
 #If prefix is set, we want to allow installation in a directory that is not on PYTHONPATH
 #and this is only possible with distutils, not setuptools
-if not args[0].prefix:
-    import setuptools
-import numpy.distutils as nd
-
-try:
-    from Cython.Distutils import build_ext
-    from Cython.Build import cythonize
-except ImportError:
-    msg="Please upgrade to a newer Cython version, >= 3"
-    logging.error(msg)
-    raise Exception(msg)
+if args[0].prefix is not None and not have_nd:
+    raise ValueError("Cannot handle prefix argument without distutils")
 
 #Verify Cython version
-import Cython
 cython_version = Cython.__version__.split(".")
 if not cython_version[0] >= '3':
     msg="Please upgrade to a newer Cython version, >= 3"
@@ -148,20 +140,20 @@ def __init__(self,args, thirdparty_methods):
         self.sundials_with_msvc = False
         self.msvcSLU = False
 
-        if self.no_mvscr:
+        if self.no_mvscr and have_nd:
         # prevent the MSVCR* being added to the DLLs passed to the linker
             def msvc_runtime_library_mod(): 
                 return None
             nd.misc_util.msvc_runtime_library = msvc_runtime_library_mod
             logging.debug('numpy.distutils.misc_util.msvc_runtime_library overwritten.')
-        
-        # prevent Fortran to link dynamically
-        # Are there any additional flags needed for e.g. MKL, see https://software.intel.com/en-us/articles/intel-mkl-link-line-advisor
-        def fortran_compiler_flags(self):
-            opt = ['/nologo', '/MT', '/nbs', '/names:lowercase', '/assume:underscore']
-            return opt
-        from numpy.distutils.fcompiler import intel
-        nd.fcompiler.intel.IntelVisualFCompiler.get_flags=fortran_compiler_flags
+
+        if have_nd:
+            # prevent Fortran to link dynamically
+            # Are there any additional flags needed for e.g. MKL, see https://software.intel.com/en-us/articles/intel-mkl-link-line-advisor
+            def fortran_compiler_flags(self):
+                opt = ['/nologo', '/MT', '/nbs', '/names:lowercase', '/assume:underscore']
+                return opt
+            intel.IntelVisualFCompiler.get_flags=fortran_compiler_flags
 
         self.platform = 'linux'
         if 'win' in sys.platform: 
@@ -486,6 +478,8 @@ def cython_extensionlists(self):
                               include_path=[".", "assimulo", os.path.join("assimulo", "solvers")],
                               force = True,
                               compiler_directives={'language_level' : "3str"},)
+        for ext in ext_list:
+            ext.include_dirs += [np.get_include()]
 
         # SUNDIALS
         if self.with_SUNDIALS:
@@ -661,7 +655,8 @@ def fortran_extensionlists(self):
     change_dir = False
 
 ext_list = prepare.cython_extensionlists()
-ext_list += prepare.fortran_extensionlists()
+if have_nd:
+    ext_list += prepare.fortran_extensionlists()
 
 # distutils part
 
@@ -706,17 +701,14 @@ def fortran_extensionlists(self):
 """
 
 version_txt = os.path.join('assimulo', 'version.txt')
-if revision == "":
-    revision = "unknown"
 with open(version_txt, 'w') as f:
     f.write(VERSION + '\n')
-    f.write("r" + revision)
 
 license_info=[place+os.sep+pck+os.sep+'LICENSE_{}'.format(pck.upper()) 
                for pck in  thirdparty_methods for place in ['thirdparty','lib']]
 logging.debug(license_info)
 
-ndc.setup(name=NAME,
+setup(name=NAME,
       version=VERSION,
       license=LICENSE,
       description=DESCRIPTION,