Mercurial > hg > octave-jordi > gnulib-hg
annotate m4/linkat.m4 @ 12559:c2cbabec01dd
update nearly all FSF copyright year lists to include 2010
Use the same procedure as for 2009, outlined in
http://thread.gmane.org/gmane.comp.lib.gnulib.bugs/20081
| author | Jim Meyering <meyering@redhat.com> |
|---|---|
| date | Fri, 01 Jan 2010 10:31:12 +0100 |
| parents | 0bc26baea4bf |
| children | 6154fce586b6 |
| rev | line source |
|---|---|
| 12120 | 1 # serial 2 |
| 12068 | 2 # See if we need to provide linkat replacement. |
| 3 | |
|
12559
c2cbabec01dd
update nearly all FSF copyright year lists to include 2010
Jim Meyering <meyering@redhat.com>
parents:
12120
diff
changeset
|
4 dnl Copyright (C) 2009-2010 Free Software Foundation, Inc. |
| 12068 | 5 dnl This file is free software; the Free Software Foundation |
| 6 dnl gives unlimited permission to copy and/or distribute it, | |
| 7 dnl with or without modifications, as long as this notice is preserved. | |
| 8 | |
| 9 # Written by Eric Blake. | |
| 10 | |
| 11 AC_DEFUN([gl_FUNC_LINKAT], | |
| 12 [ | |
| 13 AC_REQUIRE([gl_FUNC_OPENAT]) | |
| 14 AC_REQUIRE([gl_FUNC_LINK]) | |
| 15 AC_REQUIRE([gl_FUNC_LINK_FOLLOWS_SYMLINK]) | |
| 16 AC_REQUIRE([gl_UNISTD_H_DEFAULTS]) | |
| 17 AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS]) | |
| 18 AC_CHECK_FUNCS_ONCE([linkat symlink]) | |
| 19 AC_CHECK_HEADERS_ONCE([sys/param.h]) | |
| 20 if test $ac_cv_func_linkat = no; then | |
| 21 HAVE_LINKAT=0 | |
| 22 AC_LIBOBJ([linkat]) | |
| 23 AC_LIBOBJ([at-func2]) | |
| 12120 | 24 else |
| 25 AC_CACHE_CHECK([whether linkat(,AT_SYMLINK_FOLLOW) works], | |
| 26 [gl_cv_func_linkat_follow], | |
| 27 [rm -rf conftest.f1 conftest.f2 | |
| 28 touch conftest.f1 | |
| 29 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ | |
| 30 #include <fcntl.h> | |
| 31 #include <unistd.h> | |
| 32 #ifdef __linux__ | |
| 33 /* Linux added linkat in 2.6.16, but did not add AT_SYMLINK_FOLLOW | |
| 34 until 2.6.18. Always replace linkat to support older kernels. */ | |
| 35 choke me | |
| 36 #endif | |
| 37 ]], [return linkat (AT_FDCWD, "conftest.f1", AT_FDCWD, "conftest.f2", | |
| 38 AT_SYMLINK_FOLLOW);])], | |
| 39 [gl_cv_func_linkat_follow=yes], | |
| 40 [gl_cv_func_linkat_follow="need runtime check"]) | |
| 41 rm -rf conftest.f1 conftest.f2]) | |
| 42 if test "$gl_cv_func_linkat_follow" != yes; then | |
| 43 REPLACE_LINKAT=1 | |
| 44 AC_LIBOBJ([linkat]) | |
| 45 fi | |
| 12068 | 46 fi |
| 47 ]) |