Subj : make confusion, help needed
To   : borland.public.cpp.borlandcpp
From : Stefan Schumann <stef.schumann@gmx.de>
Date : Tue Mar 16 2004 02:04 pm

Hi there!
I have big trouble in understanding the make file.
I tried to write a simple DOS program using BGI.
With BGIOBJ.exe I created egevga.obj and put it to the project folder.
Now I would like to use the commanline-tools to make an exe file but
here is my problem.
The program is quite simple, it prints a sentence and draws a rectangle:
Note that it works, when I compile the project inside the IDE.

#include        <stdio.h>
#include        <graphics.h>

void main (void)
{
int gdriver = DETECT, gmode;
printf("Hello, here I am");
printf("%d",registerbgidriver(EGAVGA_driver));
initgraph(&gdriver, &gmode, "" );
rectangle(4, 6, 20, 50 );
}

Here is my makefile:
test3.exe : test3.obj
	tlink -LE:\BC5\LIB -c -Tde -x test3.obj

test3.obj : test3.c
	bcc -c -P- -IE:\BC5\INCLUDE test3.c

I tried to compile and link the Program with "make -ftest3.mak", but
then I get the following errors:

Error: Undefined symbol _rectangle in module test3.c
Error: Undefined symbol _initgraph in module test3.c
Error: Undefined symbol _printf in module test3.c
Error: Undefined symbol _registerbgidriver in module test3.c
Error: Undefined symbol _EGAVGA_driver in module test3.c
Fatal: No program entry point
** error 2 ** deleting test3.exe


Why are the symbols not included, allthough I name the correct include
and library paths, why is there no program entry point although there is
a main function?
Sure, I can create a makefile inside the IDE (which works but I tried to
understand it, without any success) but I need to work in DOS mode in
future so I would like to understand the main reasons for my problems.


Thanks in advance.

	Stefan

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