Mercurial > gnulib
view m4/readlinkat.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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# serial 5 # See if we need to provide readlinkat replacement. dnl Copyright (C) 2009-2019 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. # Written by Eric Blake. AC_DEFUN([gl_FUNC_READLINKAT], [ AC_REQUIRE([gl_UNISTD_H_DEFAULTS]) AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS]) AC_CHECK_FUNCS_ONCE([readlinkat]) AC_REQUIRE([gl_FUNC_READLINK]) if test $ac_cv_func_readlinkat = no; then HAVE_READLINKAT=0 else AC_CACHE_CHECK([whether readlinkat signature is correct], [gl_cv_decl_readlinkat_works], [AC_COMPILE_IFELSE( [AC_LANG_PROGRAM( [[#include <unistd.h> /* Check whether original declaration has correct type. */ ssize_t readlinkat (int, char const *, char *, size_t);]])], [gl_cv_decl_readlinkat_works=yes], [gl_cv_decl_readlinkat_works=no])]) # Assume readinkat has the same trailing slash bug as readlink, # as is the case on Mac Os X 10.10 case "$gl_cv_func_readlink_works" in *yes) if test "$gl_cv_decl_readlinkat_works" != yes; then REPLACE_READLINKAT=1 fi ;; *) REPLACE_READLINKAT=1 ;; esac fi ])