Unable to use mysqldb in Python2 virtualenv on Fedora 27

Question

My Python app that works on Fedora 26, does not work on Fedora 27.

I get this error:

ImportError: libmysqlclient.so.18: cannot open shared object file: No such file or directory

I have created a new virtualenv after upgrading to Fedora 26. mariadb-devel is installed.

Answer 1

This is a workaround:Add unsigned int reconnect; in line 344 of file: /usr/include/mysql/mysql.h. The struct should look like this:

  typedef struct st_mysql {
    NET         net;                    /* Communication parameters */
    void  *unused_0;
    char *host,*user,*passwd,*unix_socket,*server_version,*host_info;
    char *info,*db;
    const struct ma_charset_info_st *charset;      /* character set */
    MYSQL_FIELD *fields;
    MA_MEM_ROOT field_alloc;
    unsigned long long affected_rows;
    unsigned long long insert_id;               /* id if insert on table with NEXTNR */
    unsigned long long extra_info;              /* Used by mysqlshow */
    unsigned long thread_id;            /* Id for connection in server */
    unsigned long packet_length;
    unsigned int port;
    unsigned long client_flag;
    unsigned long server_capabilities;
    unsigned int protocol_version;
    unsigned int field_count;
    unsigned int server_status;
    unsigned int server_language;
    unsigned int warning_count;          /* warning count, added in 4.1 protocol */
    unsigned int reconnect;
    struct st_mysql_options options;
    enum mysql_status status;
    my_bool     free_me;                /* If free in mysql_close */
    my_bool     unused_1;
    char                scramble_buff[20+ 1];
    /* madded after 3.23.58 */
    my_bool       unused_2;
    void          *unused_3, *unused_4, *unused_5, *unused_6;
    LIST          *stmts;
    const struct  st_mariadb_methods *methods;
    void          *thd;
    my_bool       *unbuffered_fetch_owner;
    char          *info_buffer;
    struct st_mariadb_extension *extension;
} MYSQL;

Answer 2

The Issue can be resolved by running the command

sed '/st_mysql_options options;/a unsigned int reconnect;' /usr/include/mysql/mysql.h -i.bkp

The fix is referred from https://github.com/DefectDojo/django-DefectDojo/issues/407