diff options
Diffstat (limited to 'm4/fcntl-o.m4')
| -rw-r--r-- | m4/fcntl-o.m4 | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/m4/fcntl-o.m4 b/m4/fcntl-o.m4 index 9862741f3..740e78b68 100644 --- a/m4/fcntl-o.m4 +++ b/m4/fcntl-o.m4 @@ -50,7 +50,18 @@ AC_DEFUN([gl_FCNTL_O_FLAGS], #if HAVE_SYMLINK { static char const sym[] = "conftest.sym"; - if (symlink (".", sym) != 0) + if (symlink ("/dev/null", sym) != 0) + result |= 2; + else + { + int fd = open (sym, O_WRONLY | O_NOFOLLOW | O_CREAT, 0); + if (fd >= 0) + { + close (fd); + result |= 4; + } + } + if (unlink (sym) != 0 || symlink (".", sym) != 0) result |= 2; else { |