C/C++ :: Multiple Executables In Makefile?

Jan 31, 2014

How do I compile a more than one executables? If I have two rules to compile an executables, after it compiles the first, it will stop.

a: a.h a.cpp
g++ a.h a.cpp
b: b.h b.cpp
g++ b.h b.cpp

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C++ :: What Is Dependency In Makefile

Aug 7, 2014

What is dependency in Makefile.

Secondly I have made Makefile but cannot use make -f . How to use it?

Third what is make [OPTION] [TARGET]

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C :: Compiling Makefile - Error

Feb 5, 2013

I've a problem compiling my makefile. The additional files are enclosed.

the error I get:
$make ./main
gcc -ggdb main.c
/tmp/ccPIxwjP.o: In function `main':
/home/ilan/Embedded_linux/Lesson-2-Makefiles/lesson-2.1/main.c:6: undefined reference to `func1'
/home/ilan/Embedded_linux/Lesson-2-Makefiles/lesson-2.1/main.c:7: undefined reference to `func2'
collect2: error: ld returned 1 exit status
make: *** [main.o] Error 1
$

Code:
my make file:
main : main.o file1.o file2.o
gcc -ggdb main.o file1.o file2.o -o gdb-main
main.o : main.c file1.h file2.h

[Code] .....

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C++ :: How To Create Makefile With Bin Src And Inc Subdirectories

Aug 1, 2014

use makefiles, how to create a makefile with cpp files and the binary file in different directories.

These are my directories:

Project/
|
|-makefile
|
|__src/__.cpp files
|
|
|__bin/__ .exe
|
|
|__inc/__ .h files
|
|
|__obj/__ .o files

I have done this:

CC = g++

CFLAGS = -I.

SRCDIR = src
OBJDIR = obj
BINDIR = bin
INCDIR = inc

SOURCES := $(wildcard $(SRCDIR)/*.cpp)

[Code] .....

but console says "no rule to make target main.cpp, needed by project"

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C++ :: Makefile Only Executing First Entry

Mar 15, 2013

Why this makefile only executes the first entry, compiling only the first program listed?

###########################################################
#
# Simple Makefile for Operating Systems Project 2
#
###########################################################
vowcon:
g++ -o vowcon vowcon.cpp -pthread
osproj2c:
g++ -o osproj2c osproj2c.cpp -pthread
osproj2b:
g++ -o osproj2b osproj2b.cpp -pthread
osproj2a:
gcc -o osproj2a osproj2a.c -pthread
clean:
rm osproj2a osproj2b osproj2c osproj2d vowcon

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C++ :: Checking For IDConfig In Makefile?

Mar 29, 2012

How do I check for ldconfig in a makefile? This makefile errors because it tries to run ldconfig, even though OS = Darwin

Code:
ifeq ($(SHARED),1)
install: banner install_headers $(lib_target)
@echo "Install shared library"
cp -f ./$(lib_target) $(inst_path)
cd $(inst_path) ;

[Code] ....

Errors

Code:
/bin/sh: -c: line 0: syntax error near unexpected token `Darwin,Darwin'
/bin/sh: -c: line 0: `ifneq (Darwin,Darwin)'
make: *** [install] Error 2
make: ldconfig: No such file or directory
make: *** [uninstall] Error 1

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C++ :: Calling A Script From Makefile

May 18, 2013

I would like to call a script from a makfile to glean some information about the OS. What I more or less need is the OS name and version (CentOS-5.9, OPENSUSE-12.2, Cygwin, etc). I think I can get the rest of what I need from uname. The OS name and version doesn't seem to reside in any consistent place over the various Linux flavors. I also need to get the version of the gnu c compiler, since I think that may also require a bit more involved scripting than I would like to try out of make.

The main question is weather I can call a script out of make and have it return a value for a variable.

Something like,

OS := $(shell ./script_name)

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C++ :: Makefile Options To Compile For 64 Bit

Mar 17, 2014

I have called a C function inside C++ code. The .so which gets created is a 32 bit while I am looking for 64 bit . What all options should be mentioned in the Make file to eventually compile and get shared object of ELF64 CLASS ?

Excerpts from Makefile
-----------------------------

CC = gcc
CXX = g++
CPPFLAGS = -I. -I$(S) -DHAVE_CONFIG_H
CFLAGS = -O2 -pipe
CXXFLAGS = -g -O2
LDFLAGS =
LIBS = -lsocket -lnsl

[Code] .....

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C :: Create Makefile For A Single File

May 20, 2013

I'm trying to create a Makefile for a single fie ( mycod.c)

What is the syntax?

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C# :: Multiple Desktop Display (Multiple Explorer Windows)

Jul 31, 2014

I want to develop an application which can host multiple views of explorer (window), where as each window is totally separate from others. So that I can have multiple desktop views through my single explorer. Any built in feature in .NET ?

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C/C++ :: How To Make Multiple Subroutine And Return Multiple Arrays

Aug 17, 2014

how to make subroutines and return multiple arrays.Before that, i wrote my program on matlab. could my program to be structured as following?

<header>
initial value of program;
subroutine1() {
calculating the first work;
return 2 or 3 arrays;

[code].....

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C :: Redirecting Multiple Pipes With Multiple Children

Mar 21, 2014

I've been working on a function that works like a pipeline of a shell but receives a directory, go over it an search for every file to send it to a filter, something like this in bash "cat dir/* | cmd_1 | cmd_2 | ... | cmd_N", The only problem i have with the code is the redirection of the pipe descriptors.

Code:

int main(int argc, char* argv[]){
char** cmd;
int Number_cmd;
cmd = &(argv[2]); /*list of cmds*/
Number_cmd = argc-2; /*number of cmds*/
}

[code]....

The code is seems to work fine except when i run it with more than one command in example ("./filter DIR wc rev") in this case it returns

wc: standard input: Bad file descriptor
wc: -: Bad file descriptor
0 0 0

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C++ ::  Multiple Files Causes (Multiple Definition) Error?

Jul 15, 2013

I'm using multiple C++ files in one project for the first time. Both have need to include a protected (#ifndef) header file. However, when I do that, I get a multiple definition error.

From what I found from research, adding the word inline before the function fixes the error. Is this the right way to do this, and why does it work? Should I make a habbit of just declaring any function that might be used in two .cpp files as inline?

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C++ :: Take Max Of Multiple Elements In Multiple Vectors?

Mar 1, 2012

Say I have 5 vectors of unsigned char each of size 5. I want to take the max of each index and store it in a new vector. What is the most optimal way to accomplish this?

My slow code:

Code:
vector<unsigned char> vec1;
vector<unsigned char> vec2;
vector<unsigned char> vec3;
vector<unsigned char> vec4;

[Code]....

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C/C++ :: Multiple Cin In One Line?

Apr 1, 2014

My professor asked my to make a program that makes the "FCFS","SWJ" operations using any programming language actually i preferred c++ i like it more than java so i started in it but i'm facing a little problem ,,, which is i cant enter multiple inputs with a space tabs between them if this possible , for example : i want to get the arrival time and execution time from user

arrival (spaces " ") execution >> i want the input be like this
input1 (spaces " ") input2

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C/C++ :: Multiple Class In A Map?

Jul 18, 2012

Class1 {
        public:
            int value;
            Class1(int value) {
                this->value = value;

[Code] .....

i want use like this for that what can i do ...

std::map<class, Class2> map_Class;

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C# :: XNA Quanternion Multiple Axis

Nov 28, 2011

I made a working version using absolute vextors being rotated by matrices and keeping relative vecotrs for translations. What I didnt like is that I HAVE TO use the standard XYZ axis for rotation.What I decided to do was use quanternions to store current rotation,cthen buffer rotations each time some were done and add it up.The way I see it, it should look somewhat like this:

(in the UpdateRotation part, plz dont mind any typos i make, this isnt the actual current code. Also on a small note I use dictionaries, so dont be surprised xD) Code: RelativeVectors["Up"] = Vector3.Transform(AbsoluteVectors["Up"], (Quanterion)CurrentRotation);
//repeat for Look and Right relative vectors
Quanternion Yaw = Quanternion.CreateFromAxisAngle(RelativeVectors["Up"], RotationBuffer["Yaw"]);
//repeat for roll and pitch
CurrentRotation = Quanternion.Contancate(CurrentRotation,(Yaw*Pitch*Roll));
//

clear the rotation buffer Whats happening right now tho, is that doing this exactly doesnt actually do anything, so I have to use standard axis anyway.

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C :: Multiple Functions Within A Program

Jan 22, 2013

I am getting an error on lines 31 and 36 about an expected identifier on my program that computes area and circumference. Is something wrong with my external functions outside of main?

Code:
#include <stdio.h>
#define PI 3.14159

double area;
double circum;

double find_circum (double radius);
double find_area (double radius);

[Code] ....

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C :: Multiple Reference In One Pointer

Aug 20, 2014

Can I a have one pointer with two reference in it. Here's what I've got.

Code:
char* c;
char x='x' , y='y';
c = &x;
c = &y; -- or --
Code: char* c[2];
char x='x' , y='y';
c[0] = &x;
c[1] = &y;

If it's possible I want to apply it to make AST.

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C :: Function With Multiple Arguments

Jan 15, 2015

I am actually developing an nginx module in C.I am not to bad in C, but i got a big problem to pass argument to a vadiadic function.This function look like the well good old printf, but you put a buffer as first argument, the last address to stop to put data as second argument (in my case it is the last adress of disponible memory), a string that look like one in printf, an the other argument after.Here is the problem, the 4th last argument does not have the good value. In fact, It seem to be random value from memory. I Use gcc (Debian 4.9.1-19) 4.9.1.

Code:

/* ngx_html_log.h */
#ifndef NGX_HTML_LOG_H
#define NGX_HTML_LOG_H
#include <ngx_vasm.h>
}

[code]...

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C :: Multiple Entries Into Scan?

Sep 19, 2014

How would I be able to let the user enter multiple heart rates which would all be separate.

Code:

printf("Enter your recorded Heart Rates ");
scanf("%d", &in_rate);
//formulas
if (gender == 'm'){
target = 226 - age;
} else if (gender == 'f'){

[Code]...

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C :: How To Use Multiple Delimiters On A String

Mar 19, 2013

This is part of a bigger program im working on that deals with data structures, but I'm trying to figure out a way to tokenize a long file of purchases that is being read to my program. I rewrote the program to pinpoint my problem. I need to get the name, cost, item and quantity from this string. I figured out how to look for the cost, but what about the name and item(shirts)? How can I do this all in one loop because there are multiple strings and i'm gonna eventually send all the info to a data structure for each person(name)? I'm only asking about the tokenizing part, but this code works for the cost.

Code:

int main(void) {
char myString[] = "Angela bought 9 shirts for $6 each." ;
char * del = " " ;
char * token ;

[Code].....

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C :: How To Have Multiple Reads From Same File

Aug 25, 2013

I am attempting to break up a file into smaller chunks and have it process the different parts of the file in parallel to speed up the entire process. I was thinking maybe 4 chunks at a time. How do I get my program to do this? Is there a good book explaining parallel processing in C?

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C :: If Statement With Multiple Conditions

Feb 26, 2013

I have tried writing a code and come across an issue where I'm not getting the desired result. It is to design a program that tells whether gas emissions from a car are too high, or permissible. The instructions are to design a code where there are four possible choices of pollutant, whether the emitted pollutant ratio is greater or less then a certain value, and the mileage on the car. All of these are supposed to determine whether the emissions are permissible or not, which would be displayed with printf. (The actual conditions of the assignment are described perfectly by the code below, so I didn't think it would be necessary to write it out. The problem is that I'm getting a logical error.) Here's the code:

Code:
#include <stdio.h>
int main() {
int poln, odr;
double gpm;
printf ("(1) Carbon Monoxide

[Code] ....

My error is that the program will proceed with the first four if/else statements, but once the 'poln' value changes to something other then one, it will not display the expected quotation.

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C++ :: Using Cin That Accept Multiple Inputs

Feb 14, 2013

For a program I am required to use a cin that accepts 4 variables. The first describes a function such as add(), remove(), print(), or quit(). The problem is that to use add() I need to input all 4 variables but for remove(), only 2 variable input is needed.

I want the input to be "add 9 James Bond"
or be "remove 341"

Here is my current code.

int command(string command, int Id, string first, string last){
while (command != "quit"){
cout << "customers> ";
cin >> command >> Id >> first >> last;
if (command == "add")

[Code] .....

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C++ ::  Headers With Multiple CPP Files

Mar 22, 2013

So I have a rather large (for me) project, requiring me to have two .cpp files and a header. Anyway, both of the .cpp files #include the header file, but I recieve linker errors because the variables and functions in the header are declared and defined twice (once in each .cpp file). How am I supposed to do this?

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