__dyn_tls_init_callback Dev-c++

lobmosq.c

1. Dyn Tls V2
2. Tls Dyn Learning

Please do not use Dev-C. It is considered obsolete. Furthermore, it is not a compiler - the underlying compiler for this IDE seems to be MinGW, equivalent to GCC. 名子蠻長的，別被唬到了。 假如你使用DEV C編譯發現出現以下錯誤 Linker Error undefined reference to `dyntlsinitcallback ' 我先猜你可能有安裝MinGW 這代表DEV C在搜索libra. Re: help in configuration dev-c 4.9.9.2 with OpenCV 2.2 In reply to this post by ilotoshi Damn, I have installed OpenCV-2.2.0-win32-vs2010.exe who contains precompiled binaries for visual studio.

/*

needs libmosquitto-dev

$ gcc -o libmosq libmosq.c -lmosquitto

*/

#include<stdio.h>

#include<mosquitto.h>

#include<stdlib.h>

#include<string.h>

#include<unistd.h>

voidmosq_log_callback(struct mosquitto *mosq, void *userdata, int level, constchar *str)

{

/* Pring all log messages regardless of level. */

switch(level){

//case MOSQ_LOG_DEBUG:

//case MOSQ_LOG_INFO:

//case MOSQ_LOG_NOTICE:

case MOSQ_LOG_WARNING:

case MOSQ_LOG_ERR: {

printf('%i:%sn', level, str);

}

}

}

struct mosquitto *mosq = NULL;

char *topic = NULL;

voidmqtt_setup(){

char *host = 'localhost';

int port = 1883;

int keepalive = 60;

bool clean_session = true;

topic = '/testtopic';

mosquitto_lib_init();

mosq = mosquitto_new(NULL, clean_session, NULL);

if(!mosq){

fprintf(stderr, 'Error: Out of memory.n');

exit(1);

}

mosquitto_log_callback_set(mosq, mosq_log_callback);

if(mosquitto_connect(mosq, host, port, keepalive)){

fprintf(stderr, 'Unable to connect.n');

exit(1);

}

int loop = mosquitto_loop_start(mosq);

if(loop != MOSQ_ERR_SUCCESS){

fprintf(stderr, 'Unable to start loop: %in', loop);

exit(1);

}

}

intmqtt_send(char *msg){

returnmosquitto_publish(mosq, NULL, topic, strlen(msg), msg, 0, 0);

}

intmain(int argc, char *argv[])

{

mqtt_setup();

int i = -1000;

char *buf = malloc(64);

while(1){

sprintf(buf,'i=%i',i++);

int snd = mqtt_send(buf);

if(snd != 0) printf('mqtt_send error=%in', snd);

usleep(100000);

}

}

commented May 30, 2019

Dyn Tls V2

1. Dev C中的错误的解决Linker error undefined reference to `dyntlsinitcallback' 本分类共有文章1篇,更多信息详见 C第1页 同类文章 C.
2. The GNU Multi-Precision library, or GMP, is an essential component of the programmer who works with mathematics on a regular basis.The problem is, C and C only come with data types with fixed sizes (int, long, double, etc.), which severely limits the.

Tls Dyn Learning

how to subscribe?

commented May 30, 2019•

edited

looks like message_callback hm... do you know good example? official docs seems suxx

commented May 30, 2019

looks better example: https://gist.github.com/evgeny-boger/8cefa502779f98efaf24

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hey guys,

i have some work to do in C on a windows platform, windows 7 actually.

now i've look into the suggested IDE compiler combo you guys suggested and i've pickup Dev c++

i just type a test program, just to see how the compiler works

now i get errors like:

linker error undefined reference to `_dyn_tls_init_callback`
linker error undefined reference to `_cpu_features_init`

this as nothing to do with the code, is it because i'm on win7 ?
should i try another IDE or i'll get the same error ?

what would be nice is to be able to work in vim, i already use vim to code java. now that's a combo question, if someone have a quick vim setup for C, that can compile directly in cmd mode

but, just a quick hand on the 1st part of this thread would be nice, so i can get this thing going.

thx guys

Dark

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Recommended Answers

Dev-C++ is a bad idea (at least, the one from Bloodshed is).

Read this, pick something better.
[url]http://www.cplusplus.com/articles/36vU7k9E/[/url]

What's this it says halfway down the page? [B]Be careful doing this, though, as having two versions of MinGW might trigger linker errors ('undefined reference to __cpu_features_init'). [/B] That sounds …

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thines01401

I don't know anything about Dev c++, but it seems like:
1) You are building the wrong type of project
2) The installation is not correct.