February 19, 2003
Hi,
i wrote a program in D in win32 (commandline), and it works fine.
then i decided i would try and compile it using the linux port of D from
www.opend.org
it works, but only if i comment out my usage of getUTCtime().
the error message is this:

[root@lvs dli-0.1.2]# ./dli passGen.d
passGen.o: In function `__endif_599':
passGen.o(.text+0x30ff): undefined reference to `_D4date_10getUTCtime_FZl'
collect2: ld returned 1 exit status

what im using it for, is to further randomise the random seed when creating the
random number generator.
is there a way i can make getUTCtime() work in linux? or some other time
function i can use that will work? or even some other method of getting a unique
number for the rand_seed() func?
thanks,

Nick


February 26, 2003

nick.fletcher@dingoblue.com.au wrote:
> Hi,
> i wrote a program in D in win32 (commandline), and it works fine.
> then i decided i would try and compile it using the linux port of D from
> www.opend.org
> it works, but only if i comment out my usage of getUTCtime().
> the error message is this:
> 
> [root@lvs dli-0.1.2]# ./dli passGen.d
> passGen.o: In function `__endif_599':
> passGen.o(.text+0x30ff): undefined reference to `_D4date_10getUTCtime_FZl'
> collect2: ld returned 1 exit status
> 
> what im using it for, is to further randomise the random seed when creating the
> random number generator.
> is there a way i can make getUTCtime() work in linux? or some other time
> function i can use that will work? or even some other method of getting a unique
> number for the rand_seed() func?

There's the time function, which returns in seconds, and you can open and read from "/dev/random", which is nondeterministic because it samples from the computer state and external input.