Mercurial > gnulib
view m4/symlinkat.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 9 # See if we need to provide symlinkat 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_SYMLINKAT], [ AC_REQUIRE([gl_UNISTD_H_DEFAULTS]) AC_REQUIRE([gl_FUNC_OPENAT]) AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS]) AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles AC_CHECK_FUNCS_ONCE([symlinkat]) if test $ac_cv_func_symlinkat = no; then HAVE_SYMLINKAT=0 else AC_CACHE_CHECK([whether symlinkat handles trailing slash correctly], [gl_cv_func_symlinkat_works], [AC_RUN_IFELSE( [AC_LANG_PROGRAM( [[#include <fcntl.h> #include <unistd.h> ]], [[int result = 0; if (!symlinkat ("a", AT_FDCWD, "conftest.link/")) result |= 1; if (symlinkat ("conftest.f", AT_FDCWD, "conftest.lnk2")) result |= 2; else if (!symlinkat ("a", AT_FDCWD, "conftest.lnk2/")) result |= 4; return result; ]])], [gl_cv_func_symlinkat_works=yes], [gl_cv_func_symlinkat_works=no], [case "$host_os" in # Guess yes on Linux systems. linux-* | linux) gl_cv_func_symlinkat_works="guessing yes" ;; # Guess yes on glibc systems. *-gnu* | gnu*) gl_cv_func_symlinkat_works="guessing yes" ;; # If we don't know, assume the worst. *) gl_cv_func_symlinkat_works="guessing no" ;; esac ]) rm -f conftest.f conftest.link conftest.lnk2]) case "$gl_cv_func_symlinkat_works" in *yes) ;; *) REPLACE_SYMLINKAT=1 ;; esac fi ])