diff options
author | Jörg Frings-Fürst <debian@jff.email> | 2022-01-08 11:51:07 +0100 |
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committer | Jörg Frings-Fürst <debian@jff.email> | 2022-01-08 11:51:07 +0100 |
commit | be8efac78d067c138ad8dda03df4336e73f94887 (patch) | |
tree | 5f5254a628ba0ef72065b93d949d1c985742ea8e /gnulib-m4/sys_ioctl_h.m4 | |
parent | 7b65dbd4ebade81d504cfe5e681292a58ad1fdf0 (diff) |
New upstream version 1.0upstream/1.0
Diffstat (limited to 'gnulib-m4/sys_ioctl_h.m4')
-rw-r--r-- | gnulib-m4/sys_ioctl_h.m4 | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/gnulib-m4/sys_ioctl_h.m4 b/gnulib-m4/sys_ioctl_h.m4 new file mode 100644 index 00000000..be653643 --- /dev/null +++ b/gnulib-m4/sys_ioctl_h.m4 @@ -0,0 +1,79 @@ +# sys_ioctl_h.m4 serial 15 +dnl Copyright (C) 2008-2022 Free Software Foundation, Inc. +dnl This file is free software; the Free Software Foundation +dnl gives unlimited permission to copy and/or distribute it, +dnl with or without modifications, as long as this notice is preserved. + +dnl Written by Bruno Haible. + +AC_DEFUN_ONCE([gl_SYS_IOCTL_H], +[ + dnl Ensure to expand the default settings once only, before all statements + dnl that occur in other macros. + AC_REQUIRE([gl_SYS_IOCTL_H_DEFAULTS]) + + AC_CHECK_HEADERS_ONCE([sys/ioctl.h]) + if test $ac_cv_header_sys_ioctl_h = yes; then + HAVE_SYS_IOCTL_H=1 + dnl Test whether <sys/ioctl.h> declares ioctl(), or whether some other + dnl header file, such as <unistd.h> or <stropts.h>, is needed for that. + AC_CACHE_CHECK([whether <sys/ioctl.h> declares ioctl], + [gl_cv_decl_ioctl_in_sys_ioctl_h], + [dnl We cannot use AC_CHECK_DECL because it produces its own messages. + AC_COMPILE_IFELSE( + [AC_LANG_PROGRAM( + [[#include <sys/ioctl.h>]], + [[(void) ioctl;]])], + [gl_cv_decl_ioctl_in_sys_ioctl_h=yes], + [gl_cv_decl_ioctl_in_sys_ioctl_h=no]) + ]) + else + HAVE_SYS_IOCTL_H=0 + fi + AC_SUBST([HAVE_SYS_IOCTL_H]) + dnl <sys/ioctl.h> is always overridden, because of GNULIB_POSIXCHECK. + gl_CHECK_NEXT_HEADERS([sys/ioctl.h]) + + dnl Check for declarations of anything we want to poison if the + dnl corresponding gnulib module is not in use. + gl_WARN_ON_USE_PREPARE([[#include <sys/ioctl.h> +/* Some platforms declare ioctl in the wrong header. */ +#if !(defined __GLIBC__ && !defined __UCLIBC__) +# include <unistd.h> +#endif + ]], [ioctl]) +]) + +# gl_SYS_IOCTL_MODULE_INDICATOR([modulename]) +# sets the shell variable that indicates the presence of the given module +# to a C preprocessor expression that will evaluate to 1. +# This macro invocation must not occur in macros that are AC_REQUIREd. +AC_DEFUN([gl_SYS_IOCTL_MODULE_INDICATOR], +[ + dnl Ensure to expand the default settings once only. + gl_SYS_IOCTL_H_REQUIRE_DEFAULTS + gl_MODULE_INDICATOR_SET_VARIABLE([$1]) + dnl Define it also as a C macro, for the benefit of the unit tests. + gl_MODULE_INDICATOR_FOR_TESTS([$1]) +]) + +# Initializes the default values for AC_SUBSTed shell variables. +# This macro must not be AC_REQUIREd. It must only be invoked, and only +# outside of macros or in macros that are not AC_REQUIREd. +AC_DEFUN([gl_SYS_IOCTL_H_REQUIRE_DEFAULTS], +[ + m4_defun(GL_MODULE_INDICATOR_PREFIX[_SYS_IOCTL_H_MODULE_INDICATOR_DEFAULTS], [ + gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_IOCTL]) + ]) + m4_require(GL_MODULE_INDICATOR_PREFIX[_SYS_IOCTL_H_MODULE_INDICATOR_DEFAULTS]) + AC_REQUIRE([gl_SYS_IOCTL_H_DEFAULTS]) +]) + +AC_DEFUN([gl_SYS_IOCTL_H_DEFAULTS], +[ + dnl Assume proper GNU behavior unless another module says otherwise. + SYS_IOCTL_H_HAVE_WINSOCK2_H=0; AC_SUBST([SYS_IOCTL_H_HAVE_WINSOCK2_H]) + SYS_IOCTL_H_HAVE_WINSOCK2_H_AND_USE_SOCKETS=0; + AC_SUBST([SYS_IOCTL_H_HAVE_WINSOCK2_H_AND_USE_SOCKETS]) + REPLACE_IOCTL=0; AC_SUBST([REPLACE_IOCTL]) +]) |