kc3-lang/gnulib/m4/timespec.m4

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• Hash : 6544b9e9
  Author :
  Date : 2003-08-08T20:15:52
  

  New module 'extensions', used by timespec and unlocked-io
  for portability to Solaris.
  

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• m4/timespec.m4

• #serial 7
  
  dnl From Jim Meyering
  
  AC_DEFUN([gl_TIMESPEC],
  [
    dnl Prerequisites of lib/timespec.h.
    AC_REQUIRE([AC_HEADER_TIME])
    AC_CHECK_HEADERS_ONCE(sys/time.h)
    jm_CHECK_TYPE_STRUCT_TIMESPEC
    AC_STRUCT_ST_MTIM_NSEC
  
    dnl Persuade glibc <time.h> to declare nanosleep().
    AC_REQUIRE([AC_GNU_SOURCE])
  
    AC_CHECK_DECLS(nanosleep, , , [#include <time.h>])
  ])
  
  dnl Define HAVE_STRUCT_TIMESPEC if `struct timespec' is declared
  dnl in time.h or sys/time.h.
  
  AC_DEFUN([jm_CHECK_TYPE_STRUCT_TIMESPEC],
  [
    dnl Persuade pedantic Solaris to declare struct timespec.
    AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
  
    AC_REQUIRE([AC_HEADER_TIME])
    AC_CHECK_HEADERS_ONCE(sys/time.h)
    AC_CACHE_CHECK([for struct timespec], fu_cv_sys_struct_timespec,
      [AC_TRY_COMPILE(
        [
  #      if TIME_WITH_SYS_TIME
  #       include <sys/time.h>
  #       include <time.h>
  #      else
  #       if HAVE_SYS_TIME_H
  #        include <sys/time.h>
  #       else
  #        include <time.h>
  #       endif
  #      endif
        ],
        [static struct timespec x; x.tv_sec = x.tv_nsec;],
        fu_cv_sys_struct_timespec=yes,
        fu_cv_sys_struct_timespec=no)
      ])
  
    if test $fu_cv_sys_struct_timespec = yes; then
      AC_DEFINE(HAVE_STRUCT_TIMESPEC, 1,
  	      [Define if struct timespec is declared in <time.h>. ])
    fi
  ])
  

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