Question

I have a project that compiles and runs on my system but when I try to run it on server it is giving compile-time errors. Here are the portion of the Makefile I use to compile it on my system:

CC =  gcc
CFLAGS = -g -Wall
COMPLILEFLAGS = `mysql_config --include`
LINKERINFO = `mysql_config --cflags --libs`

exec: main.o
    $(CC) $(CFLAGS) -o exec main.o $(LINKERINFO)

main.o: main.c
    $(CC) $(CFLAGS) $(COMPLILEFLAGS) -c main.c

When I run the same file on the server I get the following error:

gcc -g -Wall -I/usr/include/mysql -c main.c
In file included from main.c:13:
/usr/include/mysql/my_global.h:688: error: redefinition of typedef ‘my_bool’
/usr/include/mysql/mysql.h:55: note: previous declaration of ‘my_bool’ was here
In file included from main.c:13:
/usr/include/mysql/my_global.h:699: error: redefinition of typedef ‘my_socket’
/usr/include/mysql/mysql.h:69: note: previous declaration of ‘my_socket’ was here
In file included from main.c:13:
/usr/include/mysql/my_global.h:1102: error: redefinition of typedef ‘my_ulonglong’
/usr/include/mysql/mysql.h:132: note: previous declaration of ‘my_ulonglong’ was here
In file included from main.c:14:
/usr/include/mysql/my_getopt.h:64: warning: ‘enum loglevel’ declared inside parameter list

The main.c file is:

#include <stdio.h>
#include <mysql.h>
#include <my_global.h>

int main (void)
{
    return 0;
}

Can anyone suggest a possible work around this problem. All I want is to increase the portability of this code. One option I can think of is to make the files compiler and linker are using within my source and use them for compiling and linking.

By the way I am using mysql-server version 5.5 and server has mysql-server version 5.3

Answer 1

Looking at MySQL’s documentation I found that old versions included a warning that stated that my_global.h should be included before mysql.h for compiling on Windows.

Try reversing the order of the includes and see if that fixes the issue. If it does, a bug is to be filed with MySQL urgently.