xref: /netbsd-src/external/gpl2/diffutils/dist/m4/strftime.m4 (revision 75f6d617e282811cb173c2ccfbf5df0dd71f7045)
1*75f6d617Schristos#serial 17
2*75f6d617Schristos
3*75f6d617Schristosdnl This macro is intended to be used solely in this file.
4*75f6d617Schristosdnl These are the prerequisite macros for GNU's strftime.c replacement.
5*75f6d617SchristosAC_DEFUN([_jm_STRFTIME_PREREQS],
6*75f6d617Schristos[
7*75f6d617Schristos dnl strftime.c uses localtime_r and the underyling system strftime
8*75f6d617Schristos dnl if they exist.
9*75f6d617Schristos AC_CHECK_FUNCS(localtime_r strftime)
10*75f6d617Schristos
11*75f6d617Schristos AC_CHECK_HEADERS(limits.h)
12*75f6d617Schristos AC_CHECK_FUNCS(bcopy tzset mempcpy memcpy memset)
13*75f6d617Schristos
14*75f6d617Schristos # This defines (or not) HAVE_TZNAME and HAVE_TM_ZONE.
15*75f6d617Schristos AC_STRUCT_TIMEZONE
16*75f6d617Schristos
17*75f6d617Schristos AC_CHECK_FUNCS(mblen mbrlen)
18*75f6d617Schristos
19*75f6d617Schristos AC_CHECK_MEMBER([struct tm.tm_gmtoff],
20*75f6d617Schristos                 [AC_DEFINE(HAVE_TM_GMTOFF, 1,
21*75f6d617Schristos                            [Define if struct tm has the tm_gmtoff member.])],
22*75f6d617Schristos                 ,
23*75f6d617Schristos                 [#include <time.h>])
24*75f6d617Schristos])
25*75f6d617Schristos
26*75f6d617Schristosdnl From Jim Meyering.
27*75f6d617Schristosdnl
28*75f6d617SchristosAC_DEFUN([jm_FUNC_GNU_STRFTIME],
29*75f6d617Schristos[AC_REQUIRE([AC_HEADER_TIME])dnl
30*75f6d617Schristos
31*75f6d617Schristos _jm_STRFTIME_PREREQS
32*75f6d617Schristos
33*75f6d617Schristos AC_REQUIRE([AC_C_CONST])dnl
34*75f6d617Schristos AC_REQUIRE([AC_HEADER_STDC])dnl
35*75f6d617Schristos AC_CHECK_HEADERS(sys/time.h)
36*75f6d617Schristos AC_DEFINE([my_strftime], [nstrftime],
37*75f6d617Schristos   [Define to the name of the strftime replacement function.])
38*75f6d617Schristos])
39*75f6d617Schristos
40*75f6d617SchristosAC_DEFUN([jm_FUNC_STRFTIME],
41*75f6d617Schristos[
42*75f6d617Schristos  _jm_STRFTIME_PREREQS
43*75f6d617Schristos])
44