New submission from Alexander Belopolsky:
After running ./configure on Linux or MacOS X, check the generated pyconfig.h
header:
$ grep TZNAME pyconfig.h
/* #undef HAVE_DECL_TZNAME */
/* #undef HAVE_TZNAME */
However, tzname exists and is declared in time.h on Linux and MacOS X as can be
seen by compiling and running the following simple program:
$ cat tzname.c
#include <time.h>
#include <stdio.h>
int main() {
tzset();
printf("%s/%s\n", tzname[0], tzname[1]);
}
$ clang tzname.c -o tzname
$ ./tzname
EST/EDT
Note that tzname is mandated by the recent editions of POSIX
<http://pubs.opengroup.org/onlinepubs/009695399/functions/tzset.html>, so I am
not sure whether we need to check for it in configure.
----------
messages: 276098
nosy: belopolsky
priority: normal
severity: normal
status: open
title: Python configure fails to detect tzname on platforms that have it.
type: behavior
versions: Python 3.5, Python 3.6, Python 3.7
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<http://bugs.python.org/issue28108>
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