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f265336d3b
All auto-generated files are created by running ./build-aux/bootstrap with Gnulib as at commit a7967a2cf0998b6c157c7cf8e1d8d9d11dab30b0 (with a date stamp of Thu Mar 15 08:46:29 2012 -0700), Autoconf 2.68, Automake 1.11.3 and Gettext 0.18.1.1.
107 lines
3.6 KiB
Plaintext
107 lines
3.6 KiB
Plaintext
# Configure a replacement for <sys/time.h>.
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# serial 8
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# Copyright (C) 2007, 2009-2012 Free Software Foundation, Inc.
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# This file is free software; the Free Software Foundation
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# gives unlimited permission to copy and/or distribute it,
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# with or without modifications, as long as this notice is preserved.
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# Written by Paul Eggert and Martin Lambers.
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AC_DEFUN([gl_HEADER_SYS_TIME_H],
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[
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dnl Use AC_REQUIRE here, so that the REPLACE_GETTIMEOFDAY=0 statement
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dnl below is expanded once only, before all REPLACE_GETTIMEOFDAY=1
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dnl statements that occur in other macros.
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AC_REQUIRE([gl_HEADER_SYS_TIME_H_BODY])
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])
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AC_DEFUN([gl_HEADER_SYS_TIME_H_BODY],
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[
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AC_REQUIRE([AC_C_RESTRICT])
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AC_REQUIRE([gl_HEADER_SYS_TIME_H_DEFAULTS])
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AC_CHECK_HEADERS_ONCE([sys/time.h])
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gl_CHECK_NEXT_HEADERS([sys/time.h])
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if test $ac_cv_header_sys_time_h != yes; then
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HAVE_SYS_TIME_H=0
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fi
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dnl On native Windows with MSVC, 'struct timeval' is defined in <winsock2.h>
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dnl only. So include that header in the list.
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gl_PREREQ_SYS_H_WINSOCK2
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AC_CACHE_CHECK([for struct timeval], [gl_cv_sys_struct_timeval],
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[AC_COMPILE_IFELSE(
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[AC_LANG_PROGRAM(
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[[#if HAVE_SYS_TIME_H
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#include <sys/time.h>
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#endif
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#include <time.h>
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#if HAVE_WINSOCK2_H
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# include <winsock2.h>
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#endif
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]],
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[[static struct timeval x; x.tv_sec = x.tv_usec;]])],
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[gl_cv_sys_struct_timeval=yes],
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[gl_cv_sys_struct_timeval=no])
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])
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if test $gl_cv_sys_struct_timeval != yes; then
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HAVE_STRUCT_TIMEVAL=0
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else
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dnl On native Windows with a 64-bit 'time_t', 'struct timeval' is defined
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dnl (in <sys/time.h> and <winsock2.h> for mingw64, in <winsock2.h> only
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dnl for MSVC) with a tv_sec field of type 'long' (32-bit!), which is
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dnl smaller than the 'time_t' type mandated by POSIX.
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AC_CACHE_CHECK([for correct struct timeval.tv_sec member],
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[gl_cv_sys_struct_timeval_tv_sec],
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[AC_COMPILE_IFELSE(
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[AC_LANG_PROGRAM(
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[[#if HAVE_SYS_TIME_H
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#include <sys/time.h>
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#endif
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#include <time.h>
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#if HAVE_WINSOCK2_H
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# include <winsock2.h>
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#endif
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]],
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[[static struct timeval x;
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typedef int verify_tv_sec_type[sizeof (x.tv_sec) == sizeof (time_t) ? 1 : -1];
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]])],
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[gl_cv_sys_struct_timeval_tv_sec=yes],
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[gl_cv_sys_struct_timeval_tv_sec=no])
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])
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if test $gl_cv_sys_struct_timeval_tv_sec != yes; then
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REPLACE_STRUCT_TIMEVAL=1
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fi
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fi
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dnl Check for declarations of anything we want to poison if the
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dnl corresponding gnulib module is not in use.
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gl_WARN_ON_USE_PREPARE([[
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#if HAVE_SYS_TIME_H
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# include <sys/time.h>
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#endif
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#include <time.h>
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]], [gettimeofday])
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])
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AC_DEFUN([gl_SYS_TIME_MODULE_INDICATOR],
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[
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dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
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AC_REQUIRE([gl_HEADER_SYS_TIME_H_DEFAULTS])
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gl_MODULE_INDICATOR_SET_VARIABLE([$1])
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dnl Define it also as a C macro, for the benefit of the unit tests.
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gl_MODULE_INDICATOR_FOR_TESTS([$1])
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])
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AC_DEFUN([gl_HEADER_SYS_TIME_H_DEFAULTS],
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[
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GNULIB_GETTIMEOFDAY=0; AC_SUBST([GNULIB_GETTIMEOFDAY])
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dnl Assume POSIX behavior unless another module says otherwise.
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HAVE_GETTIMEOFDAY=1; AC_SUBST([HAVE_GETTIMEOFDAY])
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HAVE_STRUCT_TIMEVAL=1; AC_SUBST([HAVE_STRUCT_TIMEVAL])
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HAVE_SYS_TIME_H=1; AC_SUBST([HAVE_SYS_TIME_H])
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REPLACE_GETTIMEOFDAY=0; AC_SUBST([REPLACE_GETTIMEOFDAY])
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REPLACE_STRUCT_TIMEVAL=0; AC_SUBST([REPLACE_STRUCT_TIMEVAL])
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])
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