About MinGw and Scilab.
You need to install MinGW package distributed by Equation Solution
http://www.equation.com/servlet/equation.cmd?fa=programminglogOn Windows 32 bits platform
(* x86)
ftp://ftp.equation.com/gcc/gcc-5.1.0-32.exe
On Windows 64 bits platform
with Scilab 32 bits:
(* x86)
ftp://ftp.equation.com/gcc/gcc-5.1.0-32.exe
with Scilab 64 bits:
(* x64)
ftp://ftp.equation.com/gcc/gcc-5.1.0-64.exe
Allan CORNET