| 1 | # Configure a more-standard replacement for <time.h>.
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| 2 |
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| 3 | # Copyright (C) 2000-2001, 2003-2007, 2009-2012 Free Software Foundation, Inc.
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| 4 |
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| 5 | # serial 6
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| 6 |
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| 7 | # This file is free software; the Free Software Foundation
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| 8 | # gives unlimited permission to copy and/or distribute it,
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| 9 | # with or without modifications, as long as this notice is preserved.
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| 10 |
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| 11 | # Written by Paul Eggert and Jim Meyering.
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| 12 |
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| 13 | AC_DEFUN([gl_HEADER_TIME_H],
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| 14 | [
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| 15 | dnl Use AC_REQUIRE here, so that the default behavior below is expanded
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| 16 | dnl once only, before all statements that occur in other macros.
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| 17 | AC_REQUIRE([gl_HEADER_TIME_H_BODY])
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| 18 | ])
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| 19 |
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| 20 | AC_DEFUN([gl_HEADER_TIME_H_BODY],
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| 21 | [
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| 22 | AC_REQUIRE([AC_C_RESTRICT])
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| 23 | AC_REQUIRE([gl_HEADER_TIME_H_DEFAULTS])
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| 24 | gl_NEXT_HEADERS([time.h])
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| 25 | AC_REQUIRE([gl_CHECK_TYPE_STRUCT_TIMESPEC])
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| 26 | ])
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| 27 |
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| 28 | dnl Define HAVE_STRUCT_TIMESPEC if 'struct timespec' is declared
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| 29 | dnl in time.h, sys/time.h, or pthread.h.
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| 30 |
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| 31 | AC_DEFUN([gl_CHECK_TYPE_STRUCT_TIMESPEC],
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| 32 | [
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| 33 | AC_CHECK_HEADERS_ONCE([sys/time.h])
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| 34 | AC_CACHE_CHECK([for struct timespec in <time.h>],
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| 35 | [gl_cv_sys_struct_timespec_in_time_h],
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| 36 | [AC_COMPILE_IFELSE(
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| 37 | [AC_LANG_PROGRAM(
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| 38 | [[#include <time.h>
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| 39 | ]],
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| 40 | [[static struct timespec x; x.tv_sec = x.tv_nsec;]])],
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| 41 | [gl_cv_sys_struct_timespec_in_time_h=yes],
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| 42 | [gl_cv_sys_struct_timespec_in_time_h=no])])
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| 43 |
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| 44 | TIME_H_DEFINES_STRUCT_TIMESPEC=0
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| 45 | SYS_TIME_H_DEFINES_STRUCT_TIMESPEC=0
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| 46 | PTHREAD_H_DEFINES_STRUCT_TIMESPEC=0
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| 47 | if test $gl_cv_sys_struct_timespec_in_time_h = yes; then
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| 48 | TIME_H_DEFINES_STRUCT_TIMESPEC=1
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| 49 | else
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| 50 | AC_CACHE_CHECK([for struct timespec in <sys/time.h>],
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| 51 | [gl_cv_sys_struct_timespec_in_sys_time_h],
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| 52 | [AC_COMPILE_IFELSE(
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| 53 | [AC_LANG_PROGRAM(
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| 54 | [[#include <sys/time.h>
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| 55 | ]],
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| 56 | [[static struct timespec x; x.tv_sec = x.tv_nsec;]])],
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| 57 | [gl_cv_sys_struct_timespec_in_sys_time_h=yes],
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| 58 | [gl_cv_sys_struct_timespec_in_sys_time_h=no])])
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| 59 | if test $gl_cv_sys_struct_timespec_in_sys_time_h = yes; then
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| 60 | SYS_TIME_H_DEFINES_STRUCT_TIMESPEC=1
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| 61 | else
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| 62 | AC_CACHE_CHECK([for struct timespec in <pthread.h>],
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| 63 | [gl_cv_sys_struct_timespec_in_pthread_h],
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| 64 | [AC_COMPILE_IFELSE(
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| 65 | [AC_LANG_PROGRAM(
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| 66 | [[#include <pthread.h>
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| 67 | ]],
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| 68 | [[static struct timespec x; x.tv_sec = x.tv_nsec;]])],
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| 69 | [gl_cv_sys_struct_timespec_in_pthread_h=yes],
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| 70 | [gl_cv_sys_struct_timespec_in_pthread_h=no])])
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| 71 | if test $gl_cv_sys_struct_timespec_in_pthread_h = yes; then
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| 72 | PTHREAD_H_DEFINES_STRUCT_TIMESPEC=1
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| 73 | fi
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| 74 | fi
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| 75 | fi
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| 76 | AC_SUBST([TIME_H_DEFINES_STRUCT_TIMESPEC])
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| 77 | AC_SUBST([SYS_TIME_H_DEFINES_STRUCT_TIMESPEC])
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| 78 | AC_SUBST([PTHREAD_H_DEFINES_STRUCT_TIMESPEC])
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| 79 | ])
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| 80 |
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| 81 | AC_DEFUN([gl_TIME_MODULE_INDICATOR],
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| 82 | [
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| 83 | dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
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| 84 | AC_REQUIRE([gl_HEADER_TIME_H_DEFAULTS])
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| 85 | gl_MODULE_INDICATOR_SET_VARIABLE([$1])
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| 86 | dnl Define it also as a C macro, for the benefit of the unit tests.
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| 87 | gl_MODULE_INDICATOR_FOR_TESTS([$1])
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| 88 | ])
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| 89 |
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| 90 | AC_DEFUN([gl_HEADER_TIME_H_DEFAULTS],
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| 91 | [
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| 92 | GNULIB_MKTIME=0; AC_SUBST([GNULIB_MKTIME])
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| 93 | GNULIB_NANOSLEEP=0; AC_SUBST([GNULIB_NANOSLEEP])
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| 94 | GNULIB_STRPTIME=0; AC_SUBST([GNULIB_STRPTIME])
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| 95 | GNULIB_TIMEGM=0; AC_SUBST([GNULIB_TIMEGM])
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| 96 | GNULIB_TIME_R=0; AC_SUBST([GNULIB_TIME_R])
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| 97 | dnl Assume proper GNU behavior unless another module says otherwise.
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| 98 | HAVE_DECL_LOCALTIME_R=1; AC_SUBST([HAVE_DECL_LOCALTIME_R])
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| 99 | HAVE_NANOSLEEP=1; AC_SUBST([HAVE_NANOSLEEP])
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| 100 | HAVE_STRPTIME=1; AC_SUBST([HAVE_STRPTIME])
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| 101 | HAVE_TIMEGM=1; AC_SUBST([HAVE_TIMEGM])
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| 102 | dnl If another module says to replace or to not replace, do that.
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| 103 | dnl Otherwise, replace only if someone compiles with -DGNULIB_PORTCHECK;
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| 104 | dnl this lets maintainers check for portability.
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| 105 | REPLACE_LOCALTIME_R=GNULIB_PORTCHECK; AC_SUBST([REPLACE_LOCALTIME_R])
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| 106 | REPLACE_MKTIME=GNULIB_PORTCHECK; AC_SUBST([REPLACE_MKTIME])
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| 107 | REPLACE_NANOSLEEP=GNULIB_PORTCHECK; AC_SUBST([REPLACE_NANOSLEEP])
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| 108 | REPLACE_TIMEGM=GNULIB_PORTCHECK; AC_SUBST([REPLACE_TIMEGM])
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| 109 | ])
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