m4/sys_file_h.m4

   1 # Configure a replacement for <sys/file.h>.
   2
   3 # Copyright (C) 2008 Free Software Foundation, Inc.
   4 # This file is free software; the Free Software Foundation
   5 # gives unlimited permission to copy and/or distribute it,
   6 # with or without modifications, as long as this notice is preserved.
   7
   8 # Written by Richard W.M. Jones.
   9
  10 AC_DEFUN([gl_HEADER_SYS_FILE_H],
  11 [
  12   AC_REQUIRE([gl_HEADER_SYS_FILE_H_DEFAULTS])
  13
  14   dnl Only flock is defined in a working <sys/file.h>.  If that
  15   dnl function is already there, we don't want to do any substitution.
  16   AC_CHECK_FUNCS_ONCE([flock])
  17
  18   gl_CHECK_NEXT_HEADERS([sys/file.h])
  19   SYS_FILE_H='sys/file.h'
  20   AC_SUBST([SYS_FILE_H])
  21
  22   AC_CHECK_HEADERS_ONCE([sys/file.h])
  23   if test $ac_cv_header_sys_file_h = yes; then
  24     HAVE_SYS_FILE_H=1
  25   else
  26     HAVE_SYS_FILE_H=0
  27   fi
  28   AC_SUBST([HAVE_SYS_FILE_H])
  29 ])
  30
  31 AC_DEFUN([gl_HEADER_SYS_FILE_MODULE_INDICATOR],
  32 [
  33   AC_REQUIRE([gl_HEADER_SYS_FILE_H_DEFAULTS])
  34   GNULIB_[]m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./-],[ABCDEFGHIJKLMNOPQRSTUVWXYZ___])=1
  35 ])
  36
  37 AC_DEFUN([gl_HEADER_SYS_FILE_H_DEFAULTS],
  38 [
  39   GNULIB_FLOCK=0;        AC_SUBST([GNULIB_FLOCK])
  40   HAVE_FLOCK=1;          AC_SUBST([HAVE_FLOCK])
  41 ])