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e65fc94b LC |
1 | # Configure a more-standard replacement for <time.h>. |
2 | ||
61cd9dc9 | 3 | # Copyright (C) 2000-2001, 2003-2007, 2009-2010 Free Software Foundation, Inc. |
e65fc94b LC |
4 | |
5 | # This file is free software; the Free Software Foundation | |
6 | # gives unlimited permission to copy and/or distribute it, | |
7 | # with or without modifications, as long as this notice is preserved. | |
8 | ||
9 | # Written by Paul Eggert and Jim Meyering. | |
10 | ||
11 | AC_DEFUN([gl_HEADER_TIME_H], | |
12 | [ | |
13 | dnl Use AC_REQUIRE here, so that the default behavior below is expanded | |
14 | dnl once only, before all statements that occur in other macros. | |
15 | AC_REQUIRE([gl_HEADER_TIME_H_BODY]) | |
16 | ]) | |
17 | ||
18 | AC_DEFUN([gl_HEADER_TIME_H_BODY], | |
19 | [ | |
20 | AC_REQUIRE([AC_C_RESTRICT]) | |
21 | AC_REQUIRE([gl_HEADER_TIME_H_DEFAULTS]) | |
22 | gl_CHECK_NEXT_HEADERS([time.h]) | |
23 | AC_REQUIRE([gl_CHECK_TYPE_STRUCT_TIMESPEC]) | |
24 | ]) | |
25 | ||
e65fc94b LC |
26 | dnl Define HAVE_STRUCT_TIMESPEC if `struct timespec' is declared |
27 | dnl in time.h or sys/time.h. | |
28 | ||
29 | AC_DEFUN([gl_CHECK_TYPE_STRUCT_TIMESPEC], | |
30 | [ | |
31 | AC_CHECK_HEADERS_ONCE([sys/time.h]) | |
32 | AC_CACHE_CHECK([for struct timespec in <time.h>], | |
33 | [gl_cv_sys_struct_timespec_in_time_h], | |
34 | [AC_COMPILE_IFELSE( | |
35 | [AC_LANG_PROGRAM( | |
1cd4fffc LC |
36 | [[#include <time.h> |
37 | ]], | |
38 | [[static struct timespec x; x.tv_sec = x.tv_nsec;]])], | |
e65fc94b LC |
39 | [gl_cv_sys_struct_timespec_in_time_h=yes], |
40 | [gl_cv_sys_struct_timespec_in_time_h=no])]) | |
41 | ||
42 | TIME_H_DEFINES_STRUCT_TIMESPEC=0 | |
43 | SYS_TIME_H_DEFINES_STRUCT_TIMESPEC=0 | |
44 | if test $gl_cv_sys_struct_timespec_in_time_h = yes; then | |
45 | TIME_H_DEFINES_STRUCT_TIMESPEC=1 | |
46 | else | |
47 | AC_CACHE_CHECK([for struct timespec in <sys/time.h>], | |
48 | [gl_cv_sys_struct_timespec_in_sys_time_h], | |
49 | [AC_COMPILE_IFELSE( | |
1cd4fffc LC |
50 | [AC_LANG_PROGRAM( |
51 | [[#include <sys/time.h> | |
52 | ]], | |
53 | [[static struct timespec x; x.tv_sec = x.tv_nsec;]])], | |
54 | [gl_cv_sys_struct_timespec_in_sys_time_h=yes], | |
55 | [gl_cv_sys_struct_timespec_in_sys_time_h=no])]) | |
e65fc94b LC |
56 | if test $gl_cv_sys_struct_timespec_in_sys_time_h = yes; then |
57 | SYS_TIME_H_DEFINES_STRUCT_TIMESPEC=1 | |
58 | fi | |
59 | fi | |
60 | AC_SUBST([TIME_H_DEFINES_STRUCT_TIMESPEC]) | |
61 | AC_SUBST([SYS_TIME_H_DEFINES_STRUCT_TIMESPEC]) | |
62 | ]) | |
f4c79b3c LC |
63 | |
64 | AC_DEFUN([gl_TIME_MODULE_INDICATOR], | |
65 | [ | |
66 | dnl Use AC_REQUIRE here, so that the default settings are expanded once only. | |
67 | AC_REQUIRE([gl_HEADER_STRING_H_DEFAULTS]) | |
68 | GNULIB_[]m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./-],[ABCDEFGHIJKLMNOPQRSTUVWXYZ___])=1 | |
69 | dnl Define it also as a C macro, for the benefit of the unit tests. | |
70 | gl_MODULE_INDICATOR([$1]) | |
71 | ]) | |
72 | ||
73 | AC_DEFUN([gl_HEADER_TIME_H_DEFAULTS], | |
74 | [ | |
75 | GNULIB_MKTIME=0; AC_SUBST([GNULIB_MKTIME]) | |
76 | GNULIB_NANOSLEEP=0; AC_SUBST([GNULIB_NANOSLEEP]) | |
77 | GNULIB_STRPTIME=0; AC_SUBST([GNULIB_STRPTIME]) | |
78 | GNULIB_TIMEGM=0; AC_SUBST([GNULIB_TIMEGM]) | |
79 | GNULIB_TIME_R=0; AC_SUBST([GNULIB_TIME_R]) | |
80 | dnl If another module says to replace or to not replace, do that. | |
81 | dnl Otherwise, replace only if someone compiles with -DGNULIB_PORTCHECK; | |
82 | dnl this lets maintainers check for portability. | |
83 | REPLACE_LOCALTIME_R=GNULIB_PORTCHECK; AC_SUBST([REPLACE_LOCALTIME_R]) | |
84 | REPLACE_MKTIME=GNULIB_PORTCHECK; AC_SUBST([REPLACE_MKTIME]) | |
85 | REPLACE_NANOSLEEP=GNULIB_PORTCHECK; AC_SUBST([REPLACE_NANOSLEEP]) | |
86 | REPLACE_STRPTIME=GNULIB_PORTCHECK; AC_SUBST([REPLACE_STRPTIME]) | |
87 | REPLACE_TIMEGM=GNULIB_PORTCHECK; AC_SUBST([REPLACE_TIMEGM]) | |
88 | ]) |