add missing _PC_NAME_MAX checks

This file looks for _PC_NAME_MAX in a few places, but not all.
Add some ifdefs in setup_current_filesystem too.

diff --git a/libarchive/archive_read_disk_posix.c b/libarchive/archive_read_disk_posix.c
index f4805392233d50506f86d5ce50c6ba3acd9b8ff8..a2f7810873035593b4ea80f08bbcb6dc730fb5db 100644 (file)
--- a/libarchive/archive_read_disk_posix.c
+++ b/libarchive/archive_read_disk_posix.c
@@ -1576,6 +1576,7 @@ setup_current_filesystem(struct archive_read_disk *a)
 #if defined(HAVE_STRUCT_STATFS_F_NAMEMAX)
        t->current_filesystem->name_max = sfs.f_namemax;
 #else
+# if defined(_PC_NAME_MAX)
        /* Mac OS X does not have f_namemax in struct statfs. */
        if (tree_current_is_symblic_link_target(t)) {
                if (tree_enter_working_dir(t) != 0) {
@@ -1585,6 +1586,9 @@ setup_current_filesystem(struct archive_read_disk *a)
                nm = pathconf(tree_current_access_path(t), _PC_NAME_MAX);
        } else
                nm = fpathconf(tree_current_dir_fd(t), _PC_NAME_MAX);
+# else
+       nm = -1;
+# endif
        if (nm == -1)
                t->current_filesystem->name_max = NAME_MAX;
        else