#2 amd64 compilation problem

[Anonymous]

Hi,

When I try to compile mlabraw.cpp, I receive the
following error message:

mlabraw.cpp:515: error: cast from ‘Engine*’ to ‘int’
loses precision

I assume this is related to the fact that I try to
compile mlabraw with gcc version 4 on a 64bit computer
(FC4, Python 2.4.3)

Is there any fix??????

thanks

--
mathieu

[Nobody/Anonymous]

Logged In: NO

Here is a patch to make it with amd64. The bug is resolved
by using long int instead of int for the Engine pointer.

I also had a problem with the xrange(sys.maxint), so I
arbitrarily changed it to xrange(100) in the patch. I think
this is a 64 bit python problem.

To apply the patch:
to patch

cd to mlabwrap-0.9.1
patch -p1 < ../amd64.patch

[Nobody/Anonymous]

Logged In: NO

amd64.patch

diff -u -r -N mlabwrap-0.9.1/mlabraw.cpp
mlabwrap-0.9.1_amd64/mlabraw.cpp
--- mlabwrap-0.9.1/mlabraw.cpp 2003-11-29
17:40:26.000000000 -0500
+++ mlabwrap-0.9.1_amd64/mlabraw.cpp 2006-09-06
13:31:16.000000000 -0400
@@ -499,7 +499,7 @@
char *lStr = "\0"; // "matlab -check_malloc";
if (! PyArg_ParseTuple(args, "|s:open", &lStr)) return NULL;

- pyassert(sizeof(int) >= sizeof(Engine *),
+ pyassert(sizeof(long int) >= sizeof(Engine *),
"Oops! Pointers on this architecture are too big
to fit in integers");
#ifdef WIN32
@@ -512,7 +512,7 @@
return NULL;
}

- return Py_BuildValue("i", int(ep));
+ return Py_BuildValue("l", (long int)(ep));

error_return:
return NULL;
@@ -528,9 +528,9 @@
;
PyObject * mlabraw_close(PyObject *, PyObject *args)
{
- int lHandle;
+ long int lHandle;

- if (! PyArg_ParseTuple(args, "i:close", &lHandle)) return
NULL;
+ if (! PyArg_ParseTuple(args, "l:close", &lHandle)) return
NULL;

if (engClose((Engine *)lHandle) != 0) {
PyErr_SetString(mlabraw_error, "Unable to close session");
@@ -562,8 +562,8 @@
char *lStr;
char *retStr = buffer;
PyObject *ret;
- int lHandle;
- if (! PyArg_ParseTuple(args, "is:eval", &lHandle, &lStr))
return NULL;
+ long int lHandle;
+ if (! PyArg_ParseTuple(args, "ls:eval", &lHandle, &lStr))
return NULL;
engOutputBuffer((Engine *)lHandle, retStr, BUFSIZE-1);
if (engEvalString((Engine *)lHandle, lStr) != 0) {
PyErr_SetString(mlabraw_error,
@@ -612,11 +612,11 @@
PyObject * mlabraw_get(PyObject *, PyObject *args)
{
char *lName;
- int lHandle;
+ long int lHandle;
mxArray *lArray = NULL;
PyObject *lDest = NULL;

- if (! PyArg_ParseTuple(args, "is:get", &lHandle, &lName))
return NULL;
+ if (! PyArg_ParseTuple(args, "ls:get", &lHandle, &lName))
return NULL;

// for matlab >= 6.5 (FIXME UNTESTED)
#ifdef _V6_5_OR_LATER
@@ -662,11 +662,11 @@
PyObject * mlabraw_put(PyObject *, PyObject *args)
{
char *lName;
- int lHandle;
+ long int lHandle;
PyObject *lSource;
mxArray *lArray = NULL;

- if (! PyArg_ParseTuple(args, "isO:put", &lHandle, &lName,
&lSource)) return NULL;
+ if (! PyArg_ParseTuple(args, "lsO:put", &lHandle, &lName,
&lSource)) return NULL;
Py_INCREF(lSource);

if (PyString_Check(lSource)) {
diff -u -r -N mlabwrap-0.9.1/mlabwrap.py
mlabwrap-0.9.1_amd64/mlabwrap.py
--- mlabwrap-0.9.1/mlabwrap.py 2005-05-03
16:11:47.000000000 -0400
+++ mlabwrap-0.9.1_amd64/mlabwrap.py 2006-09-06
13:44:19.000000000 -0400
@@ -489,7 +489,7 @@
argnames = []
tempargs = []
try:
- for arg, count in zip(args, xrange(sys.maxint)):
+ for arg, count in zip(args, xrange(100)):
if isinstance(arg, MlabObjectProxy):
argnames.append(arg._name)
else:
diff -u -r -N mlabwrap-0.9.1/setup.py
mlabwrap-0.9.1_amd64/setup.py
--- mlabwrap-0.9.1/setup.py 2005-05-03
16:11:47.000000000 -0400
+++ mlabwrap-0.9.1_amd64/setup.py 2006-09-06
10:25:52.000000000 -0400
@@ -11,9 +11,9 @@
##### (if setup.py fails to guess the right values for
them) #####
####################################################################
MATLAB_VERSION = 7 # e.g: 6 (one of (6, 6.5, 7))
-MATLAB_DIR=None # e.g: '/usr/local/matlab';
'c:/matlab6'
+MATLAB_DIR='/usr/local/matlabR2006a' # e.g:
'/usr/local/matlab'; 'c:/matlab6'
EXTRA_COMPILE_ARGS=None # e.g: ['-G']
-PLATFORM_DIR=None # e.g: 'glnx86';
r'win32/microsoft/msvc60'
+PLATFORM_DIR='glnxa64' # e.g: 'glnx86';
r'win32/microsoft/msvc60'

# hopefully these 3 won't need modification
MATLAB_LIBRARIES=None # e.g: ['eng', 'mx', 'mat',
'mi', 'ut']

[Joe Lingevitch]

Logged In: YES
user_id=1592921

Here is a patch to make it with amd64. The bug is resolved
by using long int instead of int for the Engine pointer.

I also had a problem with the xrange(sys.maxint), so I
arbitrarily changed it to xrange(100) in the patch. I think
this is a 64 bit python problem.

To apply the patch:
to patch

cd to mlabwrap-0.9.1
patch -p1 < ../amd64.patch