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# $Cambridge: exim/exim-src/scripts/os-type,v 1.6 2009/11/13 12:18:35 nm4 Exp $
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# Shell script to determine the operating system type. Some of the heuristics
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# herein have accumulated over the years and may not strictly be needed now,
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# but they are left in under the principle of "If it ain't broke, don't fix
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# For some OS there are two variants: a full name, which is used for the
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# build directory, and a generic name, which is used to identify the OS-
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# specific scripts, and which can be the same for different versions of
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# the OS. Solaris 2 is one such OS. The option -generic specifies the
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# latter type of output.
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# If EXIM_OSTYPE is set, use it. This allows a manual override.
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case "$EXIM_OSTYPE" in ?*) os="$EXIM_OSTYPE";; esac
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# Otherwise, try to get a value from the uname command. Use an explicit
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# option just in case there are any systems where -s is not the default.
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case "$os" in '') os=`uname -s`;; esac
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# Identify Glibc systems under different names.
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case "$os" in GNU) os=GNU;; esac
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case "$os" in GNU/*|Linux) os=Linux;; esac
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# It is believed that all systems respond to uname -s, but just in case
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# there is one that doesn't, use the shell's $OSTYPE variable. It is known
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# to be unhelpful for some systems (under IRIX is it "irix" and under BSDI
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# 3.0 it may be "386BSD") but those systems respond to uname -s, so this
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case "$os" in '') os="$OSTYPE";; esac
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# Failed to find OS type.
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echo "*** Failed to determine the operating system type." 1>&2
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# Clean out gash characters
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os=`echo $os | sed 's,[^-+_.a-zA-Z0-9],,g'`
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# A value has been obtained for the os. Some massaging may be needed in
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# some cases to get a uniform set of values. In earlier versions of this
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# script, $OSTYPE was looked at before uname -s, and various shells set it
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# to things that are subtly different. It is possible that some of this may
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# no longer be needed.
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freebsd*) os=FreeBSD;;
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IRIX) version=`uname -r`
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6.5) version=`uname -R | awk '{print $NF}'`
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version=`echo $version | sed 's,[^-+_a-zA-Z0-9],,g'`
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HI-OSF1-MJ) os=HI-OSF;;
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openbsd*) os=OpenBSD;;
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UnixWare) os=Unixware7;;
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# In the case of SunOS we need to distinguish between SunOS4 and Solaris (aka
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# SunOS5); in the case of BSDI we need to distinguish between versions 3 and 4;
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# in the case of HP-UX we need to distinguish between version 9 and later.
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SunOS) case `uname -r` in
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BSDI) case `uname -r` in
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4.2*) os="${os}4.2";;
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HP-UX) case `uname -r` in
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A.09*) os="${os}-9";;
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# Need to distinguish Solaris from the version on the HAL (64bit sparc,
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# CC=hcc -DV7). Also need to distinguish different versions of the OS
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# for building different binaries.
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SunOS5) case `uname -m` in
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sun4H) os="${os}-hal";;
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*) os="${os}-`uname -r`";;
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# In the case of Linux we used to distinguish which libc was used so that
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# the old libc5 was supported as well as the current glibc. This support
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# was giving some people problems, so it was removed in June 2005, under
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# the assumption that nobody would be using libc5 any more (it is over seven
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# In the case of NetBSD we need to distinguish between a.out, ELF
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# and COFF binary formats. However, a.out and COFF are the same
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# for our purposes, so both of them are defined as "a.out".
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# Todd Vierling of Wasabi Systems reported that NetBSD/sh3 (the
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# only NetBSD port that uses COFF binary format) will switch to
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NetBSD) if echo __ELF__ | ${CC-cc} -E - | grep -q __ELF__ ; then
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# If a generic OS name is requested, some further massaging is needed
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if [ "$1" = '-generic' ]; then
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# OK, the script seems to have worked. Pass the value back.
added
removed
scripts/os-type
