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61 lines
2.1 KiB
Plaintext
61 lines
2.1 KiB
Plaintext
# sys_ioctl_h.m4 serial 1
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dnl Copyright (C) 2008 Free Software Foundation, Inc.
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dnl This file is free software; the Free Software Foundation
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dnl gives unlimited permission to copy and/or distribute it,
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dnl with or without modifications, as long as this notice is preserved.
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dnl Written by Bruno Haible.
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AC_DEFUN([gl_SYS_IOCTL_H],
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[
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dnl Use AC_REQUIRE here, so that the default behavior below is expanded
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dnl once only, before all statements that occur in other macros.
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AC_REQUIRE([gl_SYS_IOCTL_H_DEFAULTS])
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AC_CHECK_HEADERS_ONCE([sys/ioctl.h])
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if test $ac_cv_header_sys_ioctl_h = yes; then
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HAVE_SYS_IOCTL_H=1
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dnl Test whether <sys/ioctl.h> declares ioctl(), or whether some other
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dnl header file, such as <unistd.h> or <stropts.h>, is needed for that.
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AC_CACHE_CHECK([whether <sys/ioctl.h> declares ioctl],
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[gl_cv_decl_ioctl_in_sys_ioctl_h],
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[AC_CHECK_DECL([ioctl],
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[gl_cv_decl_ioctl_in_sys_ioctl_h=yes],
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[gl_cv_decl_ioctl_in_sys_ioctl_h=no],
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[#include <sys/ioctl.h>])
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])
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if test $gl_cv_decl_ioctl_in_sys_ioctl_h != yes; then
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SYS_IOCTL_H='sys/ioctl.h'
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fi
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else
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HAVE_SYS_IOCTL_H=0
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SYS_IOCTL_H='sys/ioctl.h'
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fi
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AC_SUBST([HAVE_SYS_IOCTL_H])
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dnl Execute this unconditionally, because SYS_IOCTL_H may be set by other
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dnl modules, after this code is executed.
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gl_CHECK_NEXT_HEADERS([sys/ioctl.h])
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])
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dnl Unconditionally enables the replacement of <sys/ioctl.h>.
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AC_DEFUN([gl_REPLACE_SYS_IOCTL_H],
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[
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AC_REQUIRE([gl_SYS_IOCTL_H_DEFAULTS])
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SYS_IOCTL_H='sys/ioctl.h'
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])
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AC_DEFUN([gl_SYS_IOCTL_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_SYS_IOCTL_H_DEFAULTS])
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GNULIB_[]m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./-],[ABCDEFGHIJKLMNOPQRSTUVWXYZ___])=1
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])
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AC_DEFUN([gl_SYS_IOCTL_H_DEFAULTS],
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[
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GNULIB_IOCTL=0; AC_SUBST([GNULIB_IOCTL])
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dnl Assume proper GNU behavior unless another module says otherwise.
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SYS_IOCTL_H_HAVE_WINSOCK2_H=0; AC_SUBST([SYS_IOCTL_H_HAVE_WINSOCK2_H])
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SYS_IOCTL_H=''; AC_SUBST([SYS_IOCTL_H])
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])
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