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-rwxr-xr-xmk_loop_h.sh37
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diff --git a/mk_loop_h.sh b/mk_loop_h.sh
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1#!/bin/sh
2#
3# Figure out (i) the type of dev_t (ii) the defines for loop stuff
4#
5# Output of this script is normally redirected to "loop.h".
6
7# Since 1.3.79 there is an include file <asm/posix_types.h>
8# that defines __kernel_dev_t.
9# (The file itself appeared in 1.3.78, but there it defined __dev_t.)
10# If it exists, we use it, or, rather, <linux/posix_types.h> which
11# avoids namespace pollution. Otherwise we guess that __kernel_dev_t
12# is an unsigned short (which is true on i386, but false on alpha).
13
14# BUG: This test is actually broken if your gcc is not configured to
15# search /usr/include, as may well happen with cross-compilers.
16# It would be better to ask $(CC) if these files can be found.
17
18if [ -f /usr/include/linux/posix_types.h ]; then
19 echo '#include <linux/posix_types.h>'
20 echo '#undef dev_t'
21 echo '#define dev_t __kernel_dev_t'
22else
23 echo '#undef dev_t'
24 echo '#define dev_t unsigned short'
25fi
26
27# Next we have to find the loop stuff itself.
28# First try kernel source, then a private version.
29
30if [ -f /usr/include/linux/loop.h ]; then
31 echo '#include <linux/loop.h>'
32else
33 echo '#include "real_loop.h"'
34fi
35
36echo '#undef dev_t'
37