[hackers] [sbase] Use preprocessor conditionals to check if makedev() is present || sin

[git]

commit c83aef2cda7bce8db7cd266576a2edd9d11b9388
Author: sin <s...@2f30.org>
Date:   Tue Jan 28 16:54:41 2014 +0000

    Use preprocessor conditionals to check if makedev() is present
    
    makedev() is not portable and is typically implemented as a
    macro.  If it exists use it, otherwise silently ignore character
    and block devices.

diff --git a/tar.c b/tar.c
index 4585d95..a478e5f 100644
--- a/tar.c
+++ b/tar.c
@@ -245,12 +245,14 @@ unarchive(char *fname, int l, char b[Blksiz])
                break;
        case CHARDEV:
        case BLOCKDEV:
+#ifdef makedev
                mode = strtoul(h->mode, 0, 8);
                major = strtoul(h->major, 0, 8);
                minor = strtoul(h->mode, 0, 8);
                type = (h->type == CHARDEV) ? S_IFCHR : S_IFBLK;
                if(mknod(fname, type | mode, makedev(major, minor)))
                        perror(fname);
+#endif
                break;
        case FIFO:
                mode = strtoul(h->mode, 0, 8);