new version of glibc returns wrong timezone - timezone

Question

This SO thread Why does glibc “timezone” global not agree with system time on DST? is not a solution for my problem.
My system has glibc 2.11.3 and for my project I compiled glibc 2.22. I ran make localedata/install-locales.
This MCVE displays the correct time only when linked against the old glibc version. Linking it against the new glibc version it displays the UTC time:
#include <time.h>
#include <stdio.h>
int main()
{
struct tm * tmNow;
time_t dtNow;
char sBuffer [100];
tzset();
time( &dtNow );
tmNow = localtime( &dtNow );
strftime( sBuffer, sizeof(sBuffer), "%Y-%m-%d %T", tmNow );
printf("%ld - %s\n", timezone, sBuffer);
}
When I try to run tzselect in the bin/ directory of the new glibc version I get this error:
./tzselect: line 171: /usr/glibc/share/zoneinfo/iso3166.tab: No such file or directory
./tzselect: time zone files are not set up correctly
More or less it says all but for the moment I am not capable to find out how to set up the file /usr/glibc/share/zoneinfo/iso3166.tab.
How do I set up the timezone for the new glibc version permanently?
I do not want to use the TZ variable!
UPDATE:
Using the TZ variable does not change anything. I guess I did not configure correctly the new glibc version.
UPDATE: Copying the existing /usr/share/zoneinfo system directory into the new /usr/glibc/share/zoneinfo directory at least fixed the problem with the TZ variable. But as long the TZ variable is not set the new glibc version does not recognize the correct timezone.

Answer 1

I opened the new libc.so.6 library with vi and searched for localtime.
The hard coded directory where the new glibc version was looking for localtime is set to /usr/glibc/etc.
Then it was an easy task: I ran the command
ln -s /usr/share/zoneinfo/Europe/Vienna /usr/glibc/etc/localtime
and now the localtime is recognized correctly in the new glibc version without using the TZ variable.