[Octave-bug-tracker] [bug #41720] very first compilation of a c-file with mex - successfull, after using the build function the c-file cannot be recompile

[anonymous]

URL:
  <http://savannah.gnu.org/bugs/?41720>

                 Summary: very first compilation of a c-file with mex -
successfull, after using the build function the c-file cannot be recompile
                 Project: GNU Octave
            Submitted by: None
            Submitted on: Do 27 Feb 2014 13:09:36 UTC
                Category: Octave Function
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Inaccurate Result
                  Status: None
             Assigned to: None
         Originator Name: Grigorij
        Originator Email: address@hidden
             Open/Closed: Open
         Discussion Lock: Any
                 Release: 3.8.0
        Operating System: Microsoft Windows

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Details:

example of a c-file:


#include "mex.h"

void
mexFunction (int nlhs, mxArray *plhs[],
             int nrhs, const mxArray *prhs[])
{ 
  mexPrintf ("Hello, World!\n");

  mexPrintf ("I have %d inputs and %d outputs\n", nrhs, nlhs);
}


commands in octave:


>> mex hello.c %Compilation is successful
>> hello(1,2) %Out is right


Then, in the c-file, a minor change is performed.
command in octave:

>> mex hello.c

The output is as follows:
C:\Program Files (x86)\octave-3.8.0-5-portable\octave-3.8.0\bin/ld.exe: cannot
open output file hello.mex: Permission denied
collect2.exe: error: ld returned 1 exit status
warning: mkoctfile exited with failure status

Indeed, the hello.mex cannot be deleted, neither from explorer nor from octave
command prompt ("delete hello.mex" ends up in "warning: delete: hello.mex:
Permission denied").




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