Many files:
block.c (ext2fs_block_iterate2): Use retval which is a errcode_t type.
bitmaps.c (make_bitmap): Use size_t instead of int where appropriate.
bb_inode.c (set_bad_block_proc): Add #pragma argsused for Turbo C.
alloc.c (ext2fs_new_inode): Use ino_t instead of int for the group number.
get_pathname.c: Use ino_t instead of int where appropriate.
ext2fs.h: Make the magic structure element be errcode_t instead of int.
alloc.c alloc_tables.c badblocks.c bb_compat.c bb_inode.c
bitmaps.c block.c bmove.c brel_ma.c check_desc.c closefs.c
cmp_bitmaps.c dblist.c dblist_dir.c dir_iterate.c dirblock.c
dupfs.c expanddir.c freefs.c get_pathname.c icount.c
initialize.c inline.c inode.c irel_ma.c link.c llseek.c
lookup.c mkdir.c namei.c newdir.c read_bb.c read_bb_file.c
rs_bitmap.c rw_bitmaps.c swapfs.c test_io.c tst_badblocks.c
tst_iscan.c unix_io.c unlink.c valid_blk.c version.c: Add an
#ifdef for HAVE_UNISTD_H
diff --git a/lib/ext2fs/llseek.c b/lib/ext2fs/llseek.c
index 71a9d91..986bf0b 100644
--- a/lib/ext2fs/llseek.c
+++ b/lib/ext2fs/llseek.c
@@ -12,14 +12,18 @@
#include <sys/types.h>
#include <errno.h>
+#if HAVE_UNISTD_H
#include <unistd.h>
+#endif
#include "et/com_err.h"
#include "ext2fs/io.h"
#ifdef __linux__
#ifdef HAVE_LLSEEK
+#if HAVE_UNISTD_H
#include <unistd.h>
+#endif
#include <syscall.h>
#else /* HAVE_LLSEEK */