add patch to support dccifd directly from ACL system - thanks to Wolfgang Breyha
[exim.git] / src / scripts / Configure-os.h
1 #! /bin/sh
2 # $Cambridge: exim/src/scripts/Configure-os.h,v 1.2 2008/01/17 13:03:35 tom Exp $
3
4 # Shell script to create a link to the appropriate OS-specific header file.
5
6 scripts=../scripts
7
8 # Get the OS type, and check that there is a make file for it.
9
10 os=`$scripts/os-type -generic` || exit 1
11
12 if test ! -r ../OS/Makefile-$os
13 then echo ""
14 echo "*** Sorry - operating system $os is not supported"
15 echo "*** See OS/Makefile-* for supported systems" 1>&2
16 echo ""
17 exit 1;
18 fi
19
20 # Ensure there is an OS-specific header file, and link it to os.h. There should
21 # always be one if there is a make file for the OS, so its absence is somewhat
22 # disastrous.
23
24 if test ! -r ../OS/os.h-$os
25 then echo ""
26 echo "*** Build error: OS/os.h-$os file is missing"
27 echo ""
28 exit 1;
29 fi
30 rm -f os.h
31
32 # In order to accomodate for the fudge below, copy the file instead of
33 # symlinking it. Otherwise we pollute the clean copy with the fudge.
34 cp -a ../OS/os.h-$os os.h || exit 1
35
36 # Special-purpose fudge for older versions of Linux (pre 2.1.15) that
37 # use the structure name "options" instead of "ip_options".
38
39 if [ "$os" != "Linux" -a "$os" != "Linux-libc5" ] ; then exit 0; fi
40
41 grep ip_options /usr/include/linux/ip.h >/dev/null
42 if [ $? = 0 ] ; then exit 0; fi
43
44 cat >>os.h <<End
45
46 /* Fudge added because this Linux doesn't appear to have a definition
47 for ip_options in /usr/include/linux/ip.h. */
48
49 #define ip_options options
50 End
51
52 # End of Configure-os.h