[ODE] windows 200 mingw compil problem

[Chavent Paul]

I would like to compile ode under windows 2000 with mingw 2.0.

there are some warning that say me that there aren't ieeefp.h neither 
alloca.h. later the compil stops then says :
matrix.cpp: In function 'int dFactorCholesky(dReal *,int)':
matrix.cpp:121: 'alloca' undeclared (first use in this function)

so i decided to find the alloca.h and some explanations but nothing help me.
is there anyone that have already encouter this problem and who have 
solved it.
thanks, bye.