On Mon, 20 Feb 2012 15:01:09 -0800, Charles Mills wrote: >I am reading the FM and I am lost in a sea of environment variables and >POSIX and gosh knows what. > >If I would like the strftime() format character %z to return -0500 or +0000 >or whatever, what do I have to do? > >I know the system "knows" what time zone it is in, because for a given >timeb, localtime() and gmtime() return the proper times. > >But the %z flag in strftime() returns no characters. > >The trouble starts in localtime() because it sets tm_isdst to -1. But even >if I set tm_isdst to 0 "manually" strftime %z still returns nothing. > >As a side note, the PG says "The time zone external variables, tzname, >timezone, and daylight, declarations remain feature test protected in >time.h. Definition of these external variables are only known to the C/C++ >run-time library if the z/OS UNIX System Services C/C++ signature CSECT is >link edited with your C/C++ application." > >What the heck is the "signature CSECT" and how the heck do you link it with >your application? I found no other references in the docs to "signature >CSECT." >
There are references to signature CSECTs in the "Language Environment Vendor Interfaces" manual. http://publibz.boulder.ibm.com/cgi-bin/bookmgr_OS390/BOOKS/CEEV11A0/CCONTENTS For example, in chapter 4: http://publibz.boulder.ibm.com/cgi-bin/bookmgr_OS390/BOOKS/CEEV11A0/1.4.4.6 http://publibz.boulder.ibm.com/cgi-bin/bookmgr_OS390/BOOKS/CEEV11A0/1.4.4.9 This IBM-MAIN thread in 2000 mentions the signature CSECT for C, which is CEESG003. Maybe you just need to include it in your linkedit step. In your case I would have thought it was already linked since your program is in C. http://groups.google.com/group/bit.listserv.ibm-main/browse_thread/thread/bc90235af896d99 I can't say if this will solve your problem with getting strftime to show the time zone information, but maybe it helps a little. Bill ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
