"Fossies" - the Fresh Open Source Software Archive

Member "gnuastro-0.8/bootstrapped/m4/sys_ioctl_h.m4" (28 Dec 2018, 2438 Bytes) of package /linux/privat/gnuastro-0.8.tar.lz:


As a special service "Fossies" has tried to format the requested text file into HTML format (style: standard) with prefixed line numbers. Alternatively you can here view or download the uninterpreted source code file. See also the last Fossies "Diffs" side-by-side code changes report for "sys_ioctl_h.m4": 0.5_vs_0.6.

    1 # sys_ioctl_h.m4 serial 10
    2 dnl Copyright (C) 2008-2018 Free Software Foundation, Inc.
    3 dnl This file is free software; the Free Software Foundation
    4 dnl gives unlimited permission to copy and/or distribute it,
    5 dnl with or without modifications, as long as this notice is preserved.
    6 
    7 dnl Written by Bruno Haible.
    8 
    9 AC_DEFUN([gl_SYS_IOCTL_H],
   10 [
   11   dnl Use AC_REQUIRE here, so that the default behavior below is expanded
   12   dnl once only, before all statements that occur in other macros.
   13   AC_REQUIRE([gl_SYS_IOCTL_H_DEFAULTS])
   14 
   15   AC_CHECK_HEADERS_ONCE([sys/ioctl.h])
   16   if test $ac_cv_header_sys_ioctl_h = yes; then
   17     HAVE_SYS_IOCTL_H=1
   18     dnl Test whether <sys/ioctl.h> declares ioctl(), or whether some other
   19     dnl header file, such as <unistd.h> or <stropts.h>, is needed for that.
   20     AC_CACHE_CHECK([whether <sys/ioctl.h> declares ioctl],
   21       [gl_cv_decl_ioctl_in_sys_ioctl_h],
   22       [dnl We cannot use AC_CHECK_DECL because it produces its own messages.
   23        AC_COMPILE_IFELSE(
   24          [AC_LANG_PROGRAM(
   25             [AC_INCLUDES_DEFAULT([#include <sys/ioctl.h>])],
   26             [(void) ioctl;])],
   27          [gl_cv_decl_ioctl_in_sys_ioctl_h=yes],
   28          [gl_cv_decl_ioctl_in_sys_ioctl_h=no])
   29       ])
   30   else
   31     HAVE_SYS_IOCTL_H=0
   32   fi
   33   AC_SUBST([HAVE_SYS_IOCTL_H])
   34   dnl <sys/ioctl.h> is always overridden, because of GNULIB_POSIXCHECK.
   35   gl_CHECK_NEXT_HEADERS([sys/ioctl.h])
   36 
   37   dnl Check for declarations of anything we want to poison if the
   38   dnl corresponding gnulib module is not in use.
   39   gl_WARN_ON_USE_PREPARE([[#include <sys/ioctl.h>
   40 /* Some platforms declare ioctl in the wrong header.  */
   41 #if !(defined __GLIBC__ && !defined __UCLIBC__)
   42 # include <unistd.h>
   43 #endif
   44     ]], [ioctl])
   45 ])
   46 
   47 AC_DEFUN([gl_SYS_IOCTL_MODULE_INDICATOR],
   48 [
   49   dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
   50   AC_REQUIRE([gl_SYS_IOCTL_H_DEFAULTS])
   51   gl_MODULE_INDICATOR_SET_VARIABLE([$1])
   52   dnl Define it also as a C macro, for the benefit of the unit tests.
   53   gl_MODULE_INDICATOR_FOR_TESTS([$1])
   54 ])
   55 
   56 AC_DEFUN([gl_SYS_IOCTL_H_DEFAULTS],
   57 [
   58   GNULIB_IOCTL=0;         AC_SUBST([GNULIB_IOCTL])
   59   dnl Assume proper GNU behavior unless another module says otherwise.
   60   SYS_IOCTL_H_HAVE_WINSOCK2_H=0; AC_SUBST([SYS_IOCTL_H_HAVE_WINSOCK2_H])
   61   SYS_IOCTL_H_HAVE_WINSOCK2_H_AND_USE_SOCKETS=0;
   62                         AC_SUBST([SYS_IOCTL_H_HAVE_WINSOCK2_H_AND_USE_SOCKETS])
   63   REPLACE_IOCTL=0;      AC_SUBST([REPLACE_IOCTL])
   64 ])