diff options
| author | Igor Pashev <pashev.igor@gmail.com> | 2015-07-04 17:13:50 +0300 |
|---|---|---|
| committer | Igor Pashev <pashev.igor@gmail.com> | 2015-07-04 17:13:50 +0300 |
| commit | 71cd8e3a743046573744123777061b64881bf372 (patch) | |
| tree | 82522befe647f4fff186a5630cad0cad33f8ef53 /m4/symlinkat.m4 | |
| parent | c18578632fd3c9e513e613a86ba2b7c4ebee6c45 (diff) | |
| download | coreutils-upstream.tar.gz | |
Imported Upstream version 8.24upstream/8.24upstream
Diffstat (limited to 'm4/symlinkat.m4')
| -rw-r--r-- | m4/symlinkat.m4 | 37 |
1 files changed, 35 insertions, 2 deletions
diff --git a/m4/symlinkat.m4 b/m4/symlinkat.m4 index db7ad487..fd975c89 100644 --- a/m4/symlinkat.m4 +++ b/m4/symlinkat.m4 @@ -1,7 +1,7 @@ -# serial 5 +# serial 6 # See if we need to provide symlinkat replacement. -dnl Copyright (C) 2009-2014 Free Software Foundation, Inc. +dnl Copyright (C) 2009-2015 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. @@ -16,5 +16,38 @@ AC_DEFUN([gl_FUNC_SYMLINKAT], 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 glibc systems. + *-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 ]) |