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AC_DEFUN([AC_TNY_TIMEZONE_CHECK],
[
AC_CACHE_CHECK(for tm_gmtoff in struct tm, ac_cv_struct_tm_gmtoff,
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include <time.h>
]], [[
struct tm tm;
tm.tm_gmtoff = 1;
]])],[ac_cv_struct_tm_gmtoff=yes],[ac_cv_struct_tm_gmtoff=no]))
if test $ac_cv_struct_tm_gmtoff = yes; then
AC_DEFINE(HAVE_TM_GMTOFF, 1, [Define if struct tm has a tm_gmtoff member])
else
AC_CACHE_CHECK(for timezone variable, ac_cv_var_timezone,
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include <time.h>
]], [[
timezone = 1;
]])],[ac_cv_var_timezone=yes],[ac_cv_var_timezone=no]))
if test $ac_cv_var_timezone = yes; then
AC_DEFINE(HAVE_TIMEZONE, 1, [Define if libc defines a timezone variable])
AC_CACHE_CHECK(for altzone variable, ac_cv_var_altzone,
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include <time.h>
]], [[
altzone = 1;
]])],[ac_cv_var_altzone=yes],[ac_cv_var_altzone=no]))
if test $ac_cv_var_altzone = yes; then
AC_DEFINE(HAVE_ALTZONE, 1, [Define if libc defines an altzone variable])
fi
else
AC_MSG_ERROR([unable to find a way to determine timezone])
fi
fi
])
|
