The ftcs unix mktime use the function tzset to initialize time
conversion information by setting a single and only one environment
variable. timezone available for all the OS.

As I want to work in multi_threaded design with different time-zone, one

per each thread or per process, I can't use the unix standard fonctions
like mktime. I
need a thread-safe function that converts a local-time attached to its
timezone into a GMT time as follow:

    void localtime_to_gmt(const char * timezone,  const struct tm
localtime,  time_t * gmt_time);

Is there a  sofftware which uses instead of TZ env variable a local time

zone variable attached to the process to convert a local time to GMT ?

Thanks for your help ?

Fran?ois REYGAGNE. Software Architect.
opt[e]way S.A., 2881 route des Crtes, BP308
06906 Sophia Antipolis Cedex, FRANCE
http://www.*-*-*.com/
--