Mercurial > gnulib
view m4/ioctl.m4 @ 40140:81f075eaa990
ptsname_r: Work around bug on Android 4.3.
* m4/ptsname_r.m4 (gl_FUNC_PTSNAME_R): Define
HAVE_ESSENTIALLY_WORKING_PTSNAME_R. Test whether the return value is
correct.
* lib/ptsname_r.c (__ptsname_r): If HAVE_ESSENTIALLY_WORKING_PTSNAME_R
is defined, just fix the return value.
* doc/glibc-functions/ptsname_r.texi: Mention the Android bug. Reword:
The behaviour of musl libc is nothing to be "fixed", since it is
compliant with the next POSIX standard.
author | Bruno Haible <bruno@clisp.org> |
---|---|
date | Sat, 26 Jan 2019 15:23:19 +0100 |
parents | b06060465f09 |
children |
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# ioctl.m4 serial 5 dnl Copyright (C) 2008-2019 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. AC_DEFUN([gl_FUNC_IOCTL], [ AC_REQUIRE([gl_SYS_IOCTL_H_DEFAULTS]) AC_REQUIRE([gl_HEADER_SYS_SOCKET]) HAVE_IOCTL=1 if test "$ac_cv_header_winsock2_h" = yes; then dnl Even if the 'socket' module is not used here, another part of the dnl application may use it and pass file descriptors that refer to dnl sockets to the ioctl() function. So enable the support for sockets. HAVE_IOCTL=0 else AC_CHECK_FUNCS([ioctl]) dnl On glibc systems, the second parameter is 'unsigned long int request', dnl not 'int request'. We cannot simply cast the function pointer, but dnl instead need a wrapper. AC_CACHE_CHECK([for ioctl with POSIX signature], [gl_cv_func_ioctl_posix_signature], [AC_COMPILE_IFELSE( [AC_LANG_PROGRAM( [[#include <sys/ioctl.h> /* On some platforms, ioctl() is declared in <unistd.h>. */ #include <unistd.h> ]], [[extern #ifdef __cplusplus "C" #endif int ioctl (int, int, ...); ]]) ], [gl_cv_func_ioctl_posix_signature=yes], [gl_cv_func_ioctl_posix_signature=no]) ]) if test $gl_cv_func_ioctl_posix_signature != yes; then REPLACE_IOCTL=1 fi fi ])