errors with "mkoctfile convhulln.cc" in MSVC-Octave 3.0.3

[Fred Touwslager]

Recently a change has been made in the convhuln function to include
calculation of the convex hull volume. Since I don't want to wait on a
new MSVC-Octave release I have been trying to compile the function.
However, without succes. 
 
What I have done is following the instructions to make an .oct file in
Octave as in this link:
http://www.tatsuromatsuoka.com/octave/Eng/Win/msvcoct.html
I can run the oregonator.cc test as given in the web-page mentioned. 
 
However, if I try to use the same procedure to make an .oct file from
the convhulln.cc file I do get errors. 
Convhulln.cc expects the presence of qhull/ghull_a.h. So I downloaded
the qhull source package (from www.qhull.org) and placed it in a
sub-directory of the directory in which convhulln.cc is present. Then
all the files from qhull can be found. 
However, mkoctfile then complains about 9 "unresolved external symbols",
error LNK2019 e.g.:
 
convhulln.o : error LNK2019: unresolved external symbol _qh_memfreeshort
referenced in function "class octave_value_list __cdecl FConvhulln(class
octave_value_list const &,int)"
(?Fconvhulln@@YA?AVoctave_value_list@@ABV1 at H@Z)
 
The last error is:
 
convhulln.oct : fatal error LNK1120: 9 unresolved externals

Anybody any idea about what to do to solve this issue?

Fred J. Touwslager 



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