How to set the mysql c api to use it?

shjjzx

A simple program, copied online, but unable to compile,
I found all mysql * rpm in the installation disk, and all were installed.
When compiling a simple program, I get the following error. I don't know what else to install?
#Gcc test.c

test.c: In the function ‘main’:
test.c: 19: Warning: implicit declaration is not compatible with the built-in function 'exit'
/tmp/ccOfwWMG.o: In function `main ': test.c :(. text + 0x37): undefined reference to' mysql_init '
: test.c :(. text + 0x63): undefined reference to 'mysql_close'
collect2: ld returns 1



code show as below:

#include <stdio.h>
#include "mysql / mysql.h"

int main (int argc, char ** argv)
{

  MYSQL mysql; / * variation # 1 * /

  printf ("\n\n\tCopyright Aftab Jahan Subedar\n\t\thttp: //www.geocities.com/jahan.geo");
  printf ("\n\t\tjahan@geocities.com\n\t\tPhone: + 88027519050\n");

  if (mysql_init (&mysql) == NULL)
{
printf ("\nFailed to initate MySQL connection");
exit (1);
}

  / * now you can call any MySQL API function you like * /

  

   mysql_close (&mysql);

  }

shjjzx

I read the statement in "mysql / mysql.h", there are statements such as mysql_init (), mysql_close (), etc. Why does the compilation error?
It's weird!

It seems that no one understands this problem? I waited patiently for hours! depressed!

maranmaran

You compile and try:
 gcc -lmysqlclient test.c

snowbear

May be the reason there is no link library

shjjzx

gcc -lmysqlclient test.c
I have tried it for a long time, the error is as follows:
/ usr / bin / ld: cannot find -lmysqlclient
collect2: ld returns 1

网路癫癫

Add `mysql_config --.......` after gcc to see for yourself

shjjzx

Add `mysql_config --.......` after gcc to see for yourself

------------

Is a bright spot.
But what do you want me to add? I really don't understand! Soon after engaging in Linux, I humbly asked for advice!

shjjzx

I solved this problem myself, it took several days to get it done!

In fact, this problem is very small and not difficult, because it is still a common problem for beginners.

zerocool_ydx

There is no way, it can not be said that there are many masters in any sector;
What we don’t understand, we can only discuss together and make progress together. We always hope that the masters, what did the masters do in the first place?
Therefore, I think whether it is to solve the problem by myself or others helped to solve it, it is best to post the solution so that others can avoid detours.

ljx2013287

Several static libraries of mySQL should be linked, and the -lib option should be added to gcc.