How somebody can help. I'm learning C++ and have been using Programmer's Notepad to compile single file programs. Now I've moved onto to multiple file programs. How do I link & compile multiple (.cpp) files from within Programmer's Notepad?
Any advice would be appreciated.
How is that done?
simon
PN Developer
You can use anything from a simple batch file to a script you write that parses the .pnproj file and runs the correct tool for each file. You might also google the following which are all good tools you can run to build multiple files:
make
NAnt
Ant
cmake
jumpfroggy
Member
I use simple makefiles that I copy and paste for new projects. It's not like an IDE, but once you get used to it it's just as simple.
Say I have two files, program.cpp and library.cpp. Here's my makefile:
RunThis.exe : program.o library.o
gcc -o $@ $^
# $@ means target (RunThis.exe)
# $^ means dependencies (program.o library.o)
# You could also use this:
# gcc RunThis.exe : program.o library.o
program.o: program.cpp
gcc -c $@ $^
library.o: library.cpp
gcc -c $@ $^Here's a simpler one:
RunThis.exe: program.cpp library.cpp
gcc -o RunThis.exe program.cpp library.cppThe benefit of the first is that if you change one file, the others don't need to be recompiled. Make sure you use TAB characters to indent, spaces will not work. Make is very picky.
Thank you everyone for the advice, much appreciated.
mohseni
Member
Dear Members,
I'am trying to define a function(a simple function which make a led on/off) and add it to main source code by including a header but the main source couldn't determine/define the function. I recieve below error:
********* main.c12: undefined reference to 'ledon' ********
some told me I should compile and linke them together. how?
Would you please tell me where is problem?
%%%%%%%%% here is the codes %%%%%%%%%
main:
------------------------
#include <avr/io.h>
#include <util/delay.h>
#include "ledon.h"
int main()
{
DDRA=0xff;
while(1)
{
ledon();
}
}
--------------------------- Function( it's a simple function which make a led on/off---------
void ledon()
{
PORTA |= 0x80;
_delay_ms(100);
PORTA &= ~0x80;
_delay_ms(100);
}
------------------------- header---------------------
#ifndef MYHEADER_H
#define MYHEADER_H
void ledon();
#endif
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