#4332 fix Python 3.13 builds

* link against the system boost-python library
* add patch for Python 3.13 compatibility: new buffer interface

packaging/rpm/patches/pycuda-py3.13.patch

@@ -0,0 +1,60 @@
+--- a/src/wrapper/wrap_cudadrv.cpp	2024-08-16 23:34:22.488898877 +0700
++++ b/src/wrapper/wrap_cudadrv.cpp	2024-08-16 23:57:36.164373451 +0700
+@@ -355,9 +355,9 @@
+   module *module_from_buffer(py::object buffer, py::object py_options,
+       py::object message_handler)
+   {
+-    const char *mod_buf;
+     PYCUDA_BUFFER_SIZE_T len;
+-    if (PyObject_AsCharBuffer(buffer.ptr(), &mod_buf, &len))
++    Py_buffer py_buf;
++    if (PyObject_GetBuffer(buffer.ptr(), &py_buf, PyBUF_ANY_CONTIGUOUS))
+       throw py::error_already_set();
+     CUmodule mod;
+
+@@ -387,10 +387,12 @@
+
+     CUDAPP_PRINT_CALL_TRACE("cuModuleLoadDataEx");
+     CUresult cu_status_code; \
+-    cu_status_code = cuModuleLoadDataEx(&mod, mod_buf, (unsigned int) options.size(),
++    cu_status_code = cuModuleLoadDataEx(&mod, py_buf.buf, (unsigned int) options.size(),
+          const_cast<CUjit_option *>(&*options.begin()),
+          const_cast<void **>(&*option_values.begin()));
+
++    PyBuffer_Release(&py_buf);
++
+     size_t info_buf_size = size_t(option_values[1]);
+     size_t error_buf_size = size_t(option_values[3]);
+
+@@ -407,7 +409,8 @@
+       throw pycuda::error("module_from_buffer", CUDA_ERROR_INVALID_VALUE,
+           "non-empty options argument only supported on CUDA 2.1 and newer");
+
+-    CUDAPP_CALL_GUARDED(cuModuleLoadData, (&mod, mod_buf));
++    CUDAPP_CALL_GUARDED(cuModuleLoadData, (&mod, py_buf.buf));
++    PyBuffer_Release(&py_buf)
+ #endif
+
+     return new module(mod);
+@@ -500,16 +503,16 @@
+
+       void add_data(py::object py_data, CUjitInputType input_type, py::str py_name)
+       {
+-        const char *data_buf;
++	Py_buffer py_buf;
+         PYCUDA_BUFFER_SIZE_T data_buf_len;
+-        if (PyObject_AsCharBuffer(py_data.ptr(), &data_buf, &data_buf_len) != 0) {
++        if (PyObject_GetBuffer(py_data.ptr(), &py_buf, PyBUF_ANY_CONTIGUOUS)) {
+           throw py::error_already_set();
+         }
+         const char* name = (py_name.ptr() != Py_None)?
+             py::extract<const char*>(py_name) : NULL;
+-        const CUresult cu_result = cuLinkAddData(m_link_state, input_type,
+-            static_cast<void *>(const_cast<char *>(data_buf)),
+-            data_buf_len, name, 0, NULL, NULL);
++        const CUresult cu_result = cuLinkAddData(m_link_state, input_type, py_buf.buf,
++            py_buf.len, name, 0, NULL, NULL);
++	PyBuffer_Release(&py_buf);
+         check_cu_result("cuLinkAddData", cu_result);
+       }
+

packaging/rpm/python3-pycuda.spec

@@ -26,12 +26,13 @@
 
 Name:           %{python3}-pycuda
 Version:        2024.1.2
-Release:        1
+Release:        2
 URL:            http://mathema.tician.de/software/pycuda
 Summary:        Python3 wrapper CUDA
 License:        MIT
 Group:          Development/Libraries/Python
 Source0:        https://files.pythonhosted.org/packages/source/p/pycuda/pycuda-%{version}.tar.gz
+Patch0:         pycuda-py3.13.patch
 BuildRoot:      %{_tmppath}/%{name}-%{version}-build
 Provides:       %{python3}-pycuda
 
@@ -62,17 +63,21 @@ if [ "${sha256}" != "d110b727cbea859da4b63e91b6fa1e9fc32c5bade02d89ff449975996e9
 	exit 1
 fi
 %setup -q -n pycuda-%{version}
+%patch -P 0 -p1
 
 %build
 CUDA=/opt/cuda
+# get the python version number like "312" for 3.12:
+%define py_mm %(%{python3} -c 'import sys;print("%i%i" % sys.version_info[:2])')
 %{python3} ./configure.py \
 	--cuda-enable-gl \
 	--cuda-root=$CUDA \
 	--cudadrv-lib-dir=%{_libdir} \
 	--boost-inc-dir=%{_includedir} \
 	--boost-lib-dir=%{_libdir} \
+	--no-use-shipped-boost \
+	--boost-python-libname=boost_python%{py_mm} \
 	--no-cuda-enable-curand
-#	--boost-python-libname=boost_python37
 #	--boost-thread-libname=boost_thread
 LDFLAGS=-L$CUDA/%{STUBS_DIR} CXXFLAGS=-L$CUDA/%{STUBS_DIR} %{python3} setup.py build
 #make
@@ -92,6 +97,10 @@ rm -rf %{buildroot}
 %{python3_sitearch}/pycuda*
 
 %changelog
+* Fri Aug 16 2024 Antoine Martin <[email protected]> - 2024.1.2-2
+- link against the system boost-python library
+- add patch for Python 3.13 compatibility: new buffer interface
+
 * Tue Jul 30 2024 Antoine Martin <[email protected]> - 2024.1.2-1
 - new upstream release