Mercurial > gnulib
view m4/utimens.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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dnl Copyright (C) 2003-2019 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. dnl serial 9 AC_DEFUN([gl_UTIMENS], [ dnl Prerequisites of lib/utimens.c. AC_REQUIRE([gl_FUNC_UTIMES]) AC_REQUIRE([gl_CHECK_TYPE_STRUCT_TIMESPEC]) AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles AC_CHECK_FUNCS_ONCE([futimes futimesat futimens utimensat lutimes]) if test $ac_cv_func_futimens = no && test $ac_cv_func_futimesat = yes; then dnl FreeBSD 8.0-rc2 mishandles futimesat(fd,NULL,time). It is not dnl standardized, but Solaris implemented it first and uses it as dnl its only means to set fd time. AC_CACHE_CHECK([whether futimesat handles NULL file], [gl_cv_func_futimesat_works], [touch conftest.file AC_RUN_IFELSE([AC_LANG_PROGRAM([[ #include <stddef.h> #include <sys/times.h> #include <fcntl.h> ]], [[ int fd = open ("conftest.file", O_RDWR); if (fd < 0) return 1; if (futimesat (fd, NULL, NULL)) return 2; ]])], [gl_cv_func_futimesat_works=yes], [gl_cv_func_futimesat_works=no], [case "$host_os" in # Guess yes on Linux systems. linux-* | linux) gl_cv_func_futimesat_works="guessing yes" ;; # Guess yes on glibc systems. *-gnu*) gl_cv_func_futimesat_works="guessing yes" ;; # If we don't know, assume the worst. *) gl_cv_func_futimesat_works="guessing no" ;; esac ]) rm -f conftest.file]) case "$gl_cv_func_futimesat_works" in *yes) ;; *) AC_DEFINE([FUTIMESAT_NULL_BUG], [1], [Define to 1 if futimesat mishandles a NULL file name.]) ;; esac fi ])