2 # $Cambridge: exim/src/scripts/os-type,v 1.1 2004/10/06 15:07:40 ph10 Exp $
4 # Shell script to determine the operating system type. Some of the heuristics
5 # herein have accumulated over the years and may not strictly be needed now,
6 # but they are left in under the principle of "If it ain't broke, don't fix
9 # For some OS there are two variants: a full name, which is used for the
10 # build directory, and a generic name, which is used to identify the OS-
11 # specific scripts, and which can be the same for different versions of
12 # the OS. Solaris 2 is one such OS. The option -generic specifies the
13 # latter type of output.
15 # If EXIM_OSTYPE is set, use it. This allows a manual override.
17 case "$EXIM_OSTYPE" in ?*) os="$EXIM_OSTYPE";; esac
19 # Otherwise, try to get a value from the uname command. Use an explicit
20 # option just in case there are any systems where -s is not the default.
22 case "$os" in '') os=`uname -s`;; esac
24 # It is believed that all systems respond to uname -s, but just in case
25 # there is one that doesn't, use the shell's $OSTYPE variable. It is known
26 # to be unhelpful for some systems (under IRIX is it "irix" and under BSDI
27 # 3.0 it may be "386BSD") but those systems respond to uname -s, so this
30 case "$os" in '') os="$OSTYPE";; esac
32 # Failed to find OS type.
36 echo "*** Failed to determine the operating system type." 1>&2
42 # Clean out gash characters
44 os=`echo $os | sed 's,[^-+_.a-zA-Z0-9],,g'`
46 # A value has been obtained for the os. Some massaging may be needed in
47 # some cases to get a uniform set of values. In earlier versions of this
48 # script, $OSTYPE was looked at before uname -s, and various shells set it
49 # to things that are subtly different. It is possible that some of this may
50 # no longer be needed.
60 freebsd*) os=FreeBSD;;
66 IRIX) version=`uname -r`
69 6.5) version=`uname -R | awk '{print $NF}'`
70 version=`echo $version | sed 's,[^-+_a-zA-Z0-9],,g'`
74 HI-OSF1-MJ) os=HI-OSF;;
81 openbsd*) os=OpenBSD;;
86 UnixWare) os=Unixware7;;
91 # In the case of SunOS we need to distinguish between SunOS4 and Solaris (aka
92 # SunOS5); in the case of BSDI we need to distinguish between versions 3 and 4;
93 # in the case of HP-UX we need to distinguish between version 9 and later.
96 SunOS) case `uname -r` in
101 BSDI) case `uname -r` in
103 4.2*) os="${os}4.2";;
107 HP-UX) case `uname -r` in
108 A.09*) os="${os}-9";;
112 # Need to distinguish Solaris from the version on the HAL (64bit sparc,
113 # CC=hcc -DV7). Also need to distinguish different versions of the OS
114 # for building different binaries.
117 SunOS5) case `uname -m` in
118 sun4H) os="${os}-hal";;
119 *) os="${os}-`uname -r`";;
123 # In the case of Linux we need to distinguish which libc is used.
124 # This is more cautious than it needs to be. In practice libc5 will always
125 # be a symlink, and libc6 will always be a linker control file, but it's
126 # easy enough to do a better check, and check the symlink destination or the
127 # control file contents and make sure.
129 Linux) if [ -L /usr/lib/libc.so ]; then
130 if [ x"$(file /usr/lib/libc.so | grep "libc.so.5")"x != xx ]; then
134 if grep -q libc.so.5 /usr/lib/libc.so; then
140 # In the case of NetBSD we need to distinguish between a.out, ELF
141 # and COFF binary formats. However, a.out and COFF are the same
142 # for our purposes, so both of them are defined as "a.out".
143 # Todd Vierling of Wasabi Systems reported that NetBSD/sh3 (the
144 # only NetBSD port that uses COFF binary format) will switch to
147 NetBSD) if echo __ELF__ | ${CC-cc} -E - | grep -q __ELF__ ; then
155 # If a generic OS name is requested, some further massaging is needed
158 if [ "$1" = '-generic' ]; then
166 # OK, the script seems to have worked. Pass the value back.