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Comment développer un programme avec gcc qui permet de me connecter à MYSQL ?
Bonjour,
Depuis plusieurs jours je tente de me connecter à ma base de données sous Linux. J'ai écrit un programme en c utilisant la bibliothèque mysql.h (MySQL-client-5.1.43-1.glibc23.i386.rpm) l’installation me semble ok puisque il s’agit d’un rpm, et le tous semble s’avoir installé dans :
/usr/include/mysql-connector-c-6.0.2-linux-glibc2.3-x86-32bit
Voici le chemin du fichier mysql.h
/usr/include/mysql-connector-c-6.0.2-linux-glibc2.3-x86-32bit/include/mysql.h
A la compilation de nombreuses erreur y sont générés les voici.
Avec #include <mysql.h>
gcc mysql-c-api_c.c -o mysql-c-api_c
mysql-c-api_c.c:6:19: erreur: mysql.h : Aucun fichier ou dossier de ce type
mysql-c-api_c.c: In function 'main':
mysql-c-api_c.c:10: erreur: 'MYSQL' undeclared (first use in this function)
mysql-c-api_c.c:10: erreur: (Each undeclared identifier is reported only once
mysql-c-api_c.c:10: erreur: for each function it appears in.)
mysql-c-api_c.c:10: erreur: 'conn' undeclared (first use in this function)
mysql-c-api_c.c:11: erreur: 'MYSQL_RES' undeclared (first use in this function)
mysql-c-api_c.c:11: erreur: 'res' undeclared (first use in this function)
mysql-c-api_c.c:12: erreur: 'MYSQL_ROW' undeclared (first use in this function)
mysql-c-api_c.c:12: erreur: expected ';' before 'row'
mysql-c-api_c.c:25: attention : incompatible implicit declaration of built-in function 'exit'
mysql-c-api_c.c:31: attention : incompatible implicit declaration of built-in function 'exit'
mysql-c-api_c.c:38: erreur: 'row' undeclared (first use in this function)
Avec #include </mysql-connector-c-6.0.2-linux-glibc2.3-x86-32bit/include/mysql.h>
gcc mysql-c-api_c.c -o mysql-c-api_c
mysql-c-api_c.c:6:77: erreur: /mysql-connector-c-6.0.2-linux-glibc2.3-x86-32bit/include/mysql.h : Aucun fichier ou dossier de ce type
mysql-c-api_c.c: In function 'main':
mysql-c-api_c.c:10: erreur: 'MYSQL' undeclared (first use in this function)
mysql-c-api_c.c:10: erreur: (Each undeclared identifier is reported only once
mysql-c-api_c.c:10: erreur: for each function it appears in.)
mysql-c-api_c.c:10: erreur: 'conn' undeclared (first use in this function)
mysql-c-api_c.c:11: erreur: 'MYSQL_RES' undeclared (first use in this function)
mysql-c-api_c.c:11: erreur: 'res' undeclared (first use in this function)
mysql-c-api_c.c:12: erreur: 'MYSQL_ROW' undeclared (first use in this function)
mysql-c-api_c.c:12: erreur: expected ';' before 'row'
mysql-c-api_c.c:25: attention : incompatible implicit declaration of built-in function 'exit'
mysql-c-api_c.c:31: attention : incompatible implicit declaration of built-in function 'exit'
mysql-c-api_c.c:38: erreur: 'row' undeclared (first use in this function)
Avec #include <mysql-connector-c-6.0.2-linux-glibc2.3-x86-32bit/include/mysql.h>
gcc mysql-c-api_c.c -o mysql-c-api_c
mysql-c-api_c.c: In function 'main':
mysql-c-api_c.c:25: attention : incompatible implicit declaration of built-in function 'exit'
mysql-c-api_c.c:31: attention : incompatible implicit declaration of built-in function 'exit'
/home/stephanepierre/tmp/ccHZ50qe.o: In function `main':
mysql-c-api_c.c:(.text+0x35): undefined reference to `mysql_init'
mysql-c-api_c.c:(.text+0x77): undefined reference to `mysql_real_connect'
mysql-c-api_c.c:(.text+0x86): undefined reference to `mysql_error'
mysql-c-api_c.c:(.text+0xbf): undefined reference to `mysql_query'
mysql-c-api_c.c:(.text+0xce): undefined reference to `mysql_error'
mysql-c-api_c.c:(.text+0xff): undefined reference to `mysql_use_result'
mysql-c-api_c.c:(.text+0x130): undefined reference to `mysql_fetch_row'
mysql-c-api_c.c:(.text+0x144): undefined reference to `mysql_free_result'
mysql-c-api_c.c:(.text+0x14f): undefined reference to `mysql_close'
collect2: ld a retourné 1 code d'état d'exécution
Voici le code :
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/*
J'ai tente ceci
#include <mysql-connector-c-6.0.2-linux-glibc2.3-x86-32bit/include/mysql.h>
et
#include </mysql-connector-c-6.0.2-linux-glibc2.3-x86-32bit/include/mysql.h>
*/
#include <mysql.h>
#include <stdio.h>
int main(void) {
MYSQL *conn;
MYSQL_RES *res;
MYSQL_ROW row;
/* Change me */
char *server = "localhost";
char *user = "root";
char *password = "PASSWORD";
char *database = "mysql";
conn = mysql_init(NULL);
/* Connect to database */
if (!mysql_real_connect(conn, server,
user, password, database, 0, NULL, 0)) {
fprintf(stderr, "%s\n", mysql_error(conn));
exit(1);
}
/* send SQL query */
if (mysql_query(conn, "show tables")) {
fprintf(stderr, "%s\n", mysql_error(conn));
exit(1);
}
res = mysql_use_result(conn);
/* output table name */
printf("MySQL Tables in mysql database:\n");
while ((row = mysql_fetch_row(res)) != NULL)
printf("%s \n", row[0]);
/* close connection */
mysql_free_result(res);
mysql_close(conn);
return 0;
} |
Comment puis-je configurer le gcc pour qu'il supporte le mysql-connector?
Alors si c'est possible j'aimerai configurer le gcc pour que je n'ai pas à définir le chemin complet dans l'en-tête #include et dans la ligne de commande gcc.
Le fichier mysql.h se trouve dans :
/usr/include/mysql-connector-c-6.0.2-linux-glibc2.3-x86-32bit/include/
Le fichier libmysql.so se trouve dans :
/usr/include/mysql-connector-c-6.0.2-linux-glibc2.3-x86-32bit/lib/
