Library linking problem

[Rodrigo Cesar Silva]

I made a lot a search in the forum, but i still cannot solve my problem.
I am using devc++ 4.9.9.2 under windows vista.
Below is the demo code i am trying to execute:

include stdio.h>

include stdlib.h>

include "lp_lib.h"

int main(int argc, char *argv)
{

lprec *lp;

lp = make_lp(0,4);

/ ... /

delete_lp(lp);

system("PAUSE");
return 0;
}

This program needs a library from LPSolve (a linear programming solver) named
liblpsolve.a.
The library and header files are available at https://sourceforge.net/project
s/lpsolve/files/lpsolve/5.5.0.15/lp_solve_5.5.0.15_dev_ux32.tar.gz/download.

I did put all the header files in C:\Dev-Cpp\include and the library in C
:\Dev-Cpp\lib.

Then, i created a projetc with this demo.c file. In Project Options/Parameters
i inserted -llpsolve55 in the linker box.

When i run my project i get the following Compile Log:

Compiler: Default compiler
Building Makefile: "C:\projetos\Makefile.win"
Executing make clean
rm -f demo.o LPSolve.exe

gcc.exe -c demo.c -o demo.o -I"C:/Dev-Cpp/include"

gcc.exe demo.o -o "LPSolve.exe" -L"C:/Dev-Cpp/lib"
-llpsolve55 -llpsolve55

demo.o(.text+0x3a):demo.c: undefined reference to make_lp@8' demo.o(.text+0x4b):demo.c: undefined reference todelete_lp@4'
collect2: ld returned 1 exit status

make.exe: *** Error 1

Execution terminated

It seems that the compiler can not find the library.

Instructions for calling LPSolve API from C is available at http://lpsolve.so
urceforge.net/5.5/Build.htm

Can someone help me!?

[cpns]

The probability is that the library you have downloaded is intended for use
with GCC on Linux. You need a build for MinGW/GCC on Windows. That may be
included in one of the other available packages, but I'll leave that for you
to explore. I suggest that you at least need to download one of teh Win32
versions, but even then if it is built for a different compiler it will not
work with MinGW/GCC. If that is the case you will need to build the libary
from source. I suggest that you raise this with the LP-Solve project or its
support page.

I guess it will take a while for everyone to get the hang of the new
SourceForge markup. Unfortunately SourceForge have also managed to implement
it badly as well and incorporate a few bugs. The post does not always appear
as in the preview. The worrying thing is that other forums seemed to have
managed this years ago. StackOverflow even uses teh same markup and preview
system, but managed to get it right from day one of its existence.

At the top of the forum is an invitation to complete a survey about the new
site design. I urge everyone to complete it and express dissatisfaction with
the markup and lack of after-post editing.

Clifford