Annotation of embedaddon/libiconv/srcm4/time_h.m4, revision 1.1.1.2
1.1 misho 1: # Configure a more-standard replacement for <time.h>.
2:
1.1.1.2 ! misho 3: # Copyright (C) 2000-2001, 2003-2007, 2009-2019 Free Software Foundation, Inc.
1.1 misho 4:
1.1.1.2 ! misho 5: # serial 11
1.1 misho 6:
7: # This file is free software; the Free Software Foundation
8: # gives unlimited permission to copy and/or distribute it,
9: # with or without modifications, as long as this notice is preserved.
10:
11: # Written by Paul Eggert and Jim Meyering.
12:
13: AC_DEFUN([gl_HEADER_TIME_H],
14: [
15: dnl Use AC_REQUIRE here, so that the default behavior below is expanded
16: dnl once only, before all statements that occur in other macros.
17: AC_REQUIRE([gl_HEADER_TIME_H_BODY])
18: ])
19:
20: AC_DEFUN([gl_HEADER_TIME_H_BODY],
21: [
22: AC_REQUIRE([AC_C_RESTRICT])
23: AC_REQUIRE([gl_HEADER_TIME_H_DEFAULTS])
24: gl_NEXT_HEADERS([time.h])
25: AC_REQUIRE([gl_CHECK_TYPE_STRUCT_TIMESPEC])
26: ])
27:
1.1.1.2 ! misho 28: dnl Check whether 'struct timespec' is declared
! 29: dnl in time.h, sys/time.h, pthread.h, or unistd.h.
1.1 misho 30:
31: AC_DEFUN([gl_CHECK_TYPE_STRUCT_TIMESPEC],
32: [
33: AC_CHECK_HEADERS_ONCE([sys/time.h])
34: AC_CACHE_CHECK([for struct timespec in <time.h>],
35: [gl_cv_sys_struct_timespec_in_time_h],
36: [AC_COMPILE_IFELSE(
37: [AC_LANG_PROGRAM(
38: [[#include <time.h>
39: ]],
40: [[static struct timespec x; x.tv_sec = x.tv_nsec;]])],
41: [gl_cv_sys_struct_timespec_in_time_h=yes],
42: [gl_cv_sys_struct_timespec_in_time_h=no])])
43:
44: TIME_H_DEFINES_STRUCT_TIMESPEC=0
45: SYS_TIME_H_DEFINES_STRUCT_TIMESPEC=0
46: PTHREAD_H_DEFINES_STRUCT_TIMESPEC=0
1.1.1.2 ! misho 47: UNISTD_H_DEFINES_STRUCT_TIMESPEC=0
1.1 misho 48: if test $gl_cv_sys_struct_timespec_in_time_h = yes; then
49: TIME_H_DEFINES_STRUCT_TIMESPEC=1
50: else
51: AC_CACHE_CHECK([for struct timespec in <sys/time.h>],
52: [gl_cv_sys_struct_timespec_in_sys_time_h],
53: [AC_COMPILE_IFELSE(
54: [AC_LANG_PROGRAM(
55: [[#include <sys/time.h>
56: ]],
57: [[static struct timespec x; x.tv_sec = x.tv_nsec;]])],
58: [gl_cv_sys_struct_timespec_in_sys_time_h=yes],
59: [gl_cv_sys_struct_timespec_in_sys_time_h=no])])
60: if test $gl_cv_sys_struct_timespec_in_sys_time_h = yes; then
61: SYS_TIME_H_DEFINES_STRUCT_TIMESPEC=1
62: else
63: AC_CACHE_CHECK([for struct timespec in <pthread.h>],
64: [gl_cv_sys_struct_timespec_in_pthread_h],
65: [AC_COMPILE_IFELSE(
66: [AC_LANG_PROGRAM(
67: [[#include <pthread.h>
68: ]],
69: [[static struct timespec x; x.tv_sec = x.tv_nsec;]])],
70: [gl_cv_sys_struct_timespec_in_pthread_h=yes],
71: [gl_cv_sys_struct_timespec_in_pthread_h=no])])
72: if test $gl_cv_sys_struct_timespec_in_pthread_h = yes; then
73: PTHREAD_H_DEFINES_STRUCT_TIMESPEC=1
1.1.1.2 ! misho 74: else
! 75: AC_CACHE_CHECK([for struct timespec in <unistd.h>],
! 76: [gl_cv_sys_struct_timespec_in_unistd_h],
! 77: [AC_COMPILE_IFELSE(
! 78: [AC_LANG_PROGRAM(
! 79: [[#include <unistd.h>
! 80: ]],
! 81: [[static struct timespec x; x.tv_sec = x.tv_nsec;]])],
! 82: [gl_cv_sys_struct_timespec_in_unistd_h=yes],
! 83: [gl_cv_sys_struct_timespec_in_unistd_h=no])])
! 84: if test $gl_cv_sys_struct_timespec_in_unistd_h = yes; then
! 85: UNISTD_H_DEFINES_STRUCT_TIMESPEC=1
! 86: fi
1.1 misho 87: fi
88: fi
89: fi
90: AC_SUBST([TIME_H_DEFINES_STRUCT_TIMESPEC])
91: AC_SUBST([SYS_TIME_H_DEFINES_STRUCT_TIMESPEC])
92: AC_SUBST([PTHREAD_H_DEFINES_STRUCT_TIMESPEC])
1.1.1.2 ! misho 93: AC_SUBST([UNISTD_H_DEFINES_STRUCT_TIMESPEC])
1.1 misho 94: ])
95:
96: AC_DEFUN([gl_TIME_MODULE_INDICATOR],
97: [
98: dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
99: AC_REQUIRE([gl_HEADER_TIME_H_DEFAULTS])
100: gl_MODULE_INDICATOR_SET_VARIABLE([$1])
101: dnl Define it also as a C macro, for the benefit of the unit tests.
102: gl_MODULE_INDICATOR_FOR_TESTS([$1])
103: ])
104:
105: AC_DEFUN([gl_HEADER_TIME_H_DEFAULTS],
106: [
1.1.1.2 ! misho 107: GNULIB_CTIME=0; AC_SUBST([GNULIB_CTIME])
1.1 misho 108: GNULIB_MKTIME=0; AC_SUBST([GNULIB_MKTIME])
1.1.1.2 ! misho 109: GNULIB_LOCALTIME=0; AC_SUBST([GNULIB_LOCALTIME])
1.1 misho 110: GNULIB_NANOSLEEP=0; AC_SUBST([GNULIB_NANOSLEEP])
1.1.1.2 ! misho 111: GNULIB_STRFTIME=0; AC_SUBST([GNULIB_STRFTIME])
1.1 misho 112: GNULIB_STRPTIME=0; AC_SUBST([GNULIB_STRPTIME])
113: GNULIB_TIMEGM=0; AC_SUBST([GNULIB_TIMEGM])
114: GNULIB_TIME_R=0; AC_SUBST([GNULIB_TIME_R])
1.1.1.2 ! misho 115: GNULIB_TIME_RZ=0; AC_SUBST([GNULIB_TIME_RZ])
! 116: GNULIB_TZSET=0; AC_SUBST([GNULIB_TZSET])
1.1 misho 117: dnl Assume proper GNU behavior unless another module says otherwise.
118: HAVE_DECL_LOCALTIME_R=1; AC_SUBST([HAVE_DECL_LOCALTIME_R])
119: HAVE_NANOSLEEP=1; AC_SUBST([HAVE_NANOSLEEP])
120: HAVE_STRPTIME=1; AC_SUBST([HAVE_STRPTIME])
121: HAVE_TIMEGM=1; AC_SUBST([HAVE_TIMEGM])
1.1.1.2 ! misho 122: HAVE_TZSET=1; AC_SUBST([HAVE_TZSET])
! 123: dnl Even GNU libc does not have timezone_t yet.
! 124: HAVE_TIMEZONE_T=0; AC_SUBST([HAVE_TIMEZONE_T])
1.1 misho 125: dnl If another module says to replace or to not replace, do that.
126: dnl Otherwise, replace only if someone compiles with -DGNULIB_PORTCHECK;
127: dnl this lets maintainers check for portability.
1.1.1.2 ! misho 128: REPLACE_CTIME=GNULIB_PORTCHECK; AC_SUBST([REPLACE_CTIME])
1.1 misho 129: REPLACE_LOCALTIME_R=GNULIB_PORTCHECK; AC_SUBST([REPLACE_LOCALTIME_R])
130: REPLACE_MKTIME=GNULIB_PORTCHECK; AC_SUBST([REPLACE_MKTIME])
131: REPLACE_NANOSLEEP=GNULIB_PORTCHECK; AC_SUBST([REPLACE_NANOSLEEP])
1.1.1.2 ! misho 132: REPLACE_STRFTIME=GNULIB_PORTCHECK; AC_SUBST([REPLACE_STRFTIME])
1.1 misho 133: REPLACE_TIMEGM=GNULIB_PORTCHECK; AC_SUBST([REPLACE_TIMEGM])
1.1.1.2 ! misho 134: REPLACE_TZSET=GNULIB_PORTCHECK; AC_SUBST([REPLACE_TZSET])
! 135:
! 136: dnl Hack so that the time module doesn't depend on the sys_time module.
! 137: dnl First, default GNULIB_GETTIMEOFDAY to 0 if sys_time is absent.
! 138: : ${GNULIB_GETTIMEOFDAY=0}; AC_SUBST([GNULIB_GETTIMEOFDAY])
! 139: dnl Second, it's OK to not use GNULIB_PORTCHECK for REPLACE_GMTIME
! 140: dnl and REPLACE_LOCALTIME, as portability to Solaris 2.6 and earlier
! 141: dnl is no longer a big deal.
! 142: REPLACE_GMTIME=0; AC_SUBST([REPLACE_GMTIME])
! 143: REPLACE_LOCALTIME=0; AC_SUBST([REPLACE_LOCALTIME])
1.1 misho 144: ])
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