[Ipopt] problem of interfacing IPOPT with matlab

[Ma Yudong]

Hi guys
I am working on windows XP, and using cygwin as the unix envirenment. and
matlab version is 7.6R2008a
things are working properly until when I ran make all the new error show up
$ make all
g++ -O3 -fomit-frame-pointer -pipe -DNDEBUG -pedantic-errors -Wimplicit
-Wparentheses -Wreturn-type -Wcast-qual -Wall -Wpointer-arith
-Wwrite-strings -Wconversion -fPIC -fexceptions  -DMATLAB_MEXFILE
-DMWINDEXISINT -IC:/msys/1.0/home/MPC/Ipopt/Ipopt/install1/include
-IC:/msys/1.0/home/MPC/Ipopt/Ipopt/install1/include2 -o sparsematrix.o -c
sparsematrix.cpp
sparsematrix.cpp:1: warning: -fPIC ignored for target (all code is position
independent)
In file included from sparsematrix.cpp:9:
sparsematrix.h:19: error: conflicting declaration 'typedef int mwIndex'
C:/msys/1.0/home/MPC/Ipopt/Ipopt/install1/include2/tmwtypes.h:802: error:
'mwIndex' has a previous declaration as `typedef size_t mwIndex'
sparsematrix.h:19: error: declaration of `typedef int mwIndex'
C:/msys/1.0/home/MPC/Ipopt/Ipopt/install1/include2/tmwtypes.h:802: error:
conflicts with previous declaration `typedef size_t mwIndex'
sparsematrix.h:19: error: declaration of `typedef int mwIndex'
C:/msys/1.0/home/MPC/Ipopt/Ipopt/install1/include2/tmwtypes.h:802: error:
conflicts with previous declaration `typedef size_t mwIndex'
make: *** [sparsematrix.o] Error 1

it seems that the head files are conflicting with each other. could you help
me figure that out.
Thank you very much


-- 
Thank you very much

Yours
Yudong Ma
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