[exim.git] / src / scripts / os-type

#! /bin/sh
# $Cambridge: exim/src/scripts/os-type,v 1.1 2004/10/06 15:07:40 ph10 Exp $

# Shell script to determine the operating system type. Some of the heuristics
# herein have accumulated over the years and may not strictly be needed now,
# but they are left in under the principle of "If it ain't broke, don't fix
# it."

# For some OS there are two variants: a full name, which is used for the
# build directory, and a generic name, which is used to identify the OS-
# specific scripts, and which can be the same for different versions of
# the OS. Solaris 2 is one such OS. The option -generic specifies the
# latter type of output.

# If EXIM_OSTYPE is set, use it. This allows a manual override.

case "$EXIM_OSTYPE" in ?*) os="$EXIM_OSTYPE";; esac

# Otherwise, try to get a value from the uname command. Use an explicit
# option just in case there are any systems where -s is not the default.

case "$os" in '') os=`uname -s`;; esac

# It is believed that all systems respond to uname -s, but just in case
# there is one that doesn't, use the shell's $OSTYPE variable. It is known
# to be unhelpful for some systems (under IRIX is it "irix" and under BSDI
# 3.0 it may be "386BSD") but those systems respond to uname -s, so this
# doesn't matter.

case "$os" in '') os="$OSTYPE";; esac

# Failed to find OS type.

case "$os" in
'') echo "" 1>&2
    echo "*** Failed to determine the operating system type." 1>&2
    echo "" 1>&2
    echo UnKnown
    exit 1;;
esac

# Clean out gash characters

os=`echo $os | sed 's,[^-+_.a-zA-Z0-9],,g'`

# A value has been obtained for the os. Some massaging may be needed in
# some cases to get a uniform set of values. In earlier versions of this
# script, $OSTYPE was looked at before uname -s, and various shells set it
# to things that are subtly different. It is possible that some of this may
# no longer be needed.

case "$os" in
aix*)       os=AIX;;
AIX*)       os=AIX;;
bsdi*)      os=BSDI;;
BSDOS)      os=BSDI;;
BSD_OS)     os=BSDI;;
CYGWIN*)    os=CYGWIN;;
dgux)       os=DGUX;;
freebsd*)   os=FreeBSD;;
gnu)        os=GNU;;
Irix5)      os=IRIX;;
Irix6)      os=IRIX6;;
IRIX64)     os=IRIX6;;
irix6.5)    os=IRIX65;;
IRIX)       version=`uname -r`
            case "$version" in
            5*)  os=IRIX;;
            6.5) version=`uname -R | awk '{print $NF}'`
                 version=`echo $version | sed 's,[^-+_a-zA-Z0-9],,g'`
                 os=IRIX$version;;
            6*)  os=IRIX632;;
            esac;;
HI-OSF1-MJ) os=HI-OSF;;
HI-UXMPP)   os=HI-OSF;;
hpux*)      os=HP-UX;;
linux)      os=Linux;;
linux-*)    os=Linux;;
Linux-*)    os=Linux;;
netbsd*)    os=NetBSD;;
openbsd*)   os=OpenBSD;;
osf1)       os=OSF1;;
qnx*)       os=QNX;;
solaris*)   os=SunOS5;;
sunos4*)    os=SunOS4;;
UnixWare)   os=Unixware7;;
Ultrix)     os=ULTRIX;;
ultrix*)    os=ULTRIX;;
esac

# In the case of SunOS we need to distinguish between SunOS4 and Solaris (aka
# SunOS5); in the case of BSDI we need to distinguish between versions 3 and 4;
# in the case of HP-UX we need to distinguish between version 9 and later.

case "$os" in
SunOS)  case `uname -r` in
        5*)     os="${os}5";;
        4*)     os="${os}4";;
        esac;;

BSDI)   case `uname -r` in
        3*)     os="${os}3";;
        4.2*)   os="${os}4.2";;
        4*)     os="${os}4";;
        esac;;

HP-UX)  case `uname -r` in
        A.09*)  os="${os}-9";;
        esac;;
esac

# Need to distinguish Solaris from the version on the HAL (64bit sparc,
# CC=hcc -DV7). Also need to distinguish different versions of the OS
# for building different binaries.

case "$os" in
SunOS5) case `uname -m` in
        sun4H)  os="${os}-hal";;
            *)  os="${os}-`uname -r`";;
        esac
        ;;

# In the case of Linux we need to distinguish which libc is used.
# This is more cautious than it needs to be. In practice libc5 will always
# be a symlink, and libc6 will always be a linker control file, but it's
# easy enough to do a better check, and check the symlink destination or the
# control file contents and make sure.

Linux)  if [ -L /usr/lib/libc.so ]; then
            if [ x"$(file /usr/lib/libc.so | grep "libc.so.5")"x != xx ]; then
                    os=Linux-libc5
            fi
        else
            if grep -q libc.so.5 /usr/lib/libc.so; then
                    os=Linux-libc5
            fi
        fi
        ;;

# In the case of NetBSD we need to distinguish between a.out, ELF
# and COFF binary formats.  However, a.out and COFF are the same
# for our purposes, so both of them are defined as "a.out".
# Todd Vierling of Wasabi Systems reported that NetBSD/sh3 (the
# only NetBSD port that uses COFF binary format) will switch to
# ELF soon.

NetBSD) if echo __ELF__ | ${CC-cc} -E - | grep -q __ELF__ ; then
	    # Non-ELF system
	    os="NetBSD-a.out"
	fi
        ;;

esac

# If a generic OS name is requested, some further massaging is needed
# for some systems.

if [ "$1" = '-generic' ]; then
  case "$os" in
  SunOS5*) os=SunOS5;;
  BSDI*)   os=BSDI;;
  IRIX65*) os=IRIX65;;
  esac
fi

# OK, the script seems to have worked. Pass the value back.

echo "$os"

# End of os-type
Commit	Line	Data
	1	#! /bin/sh
	2	# $Cambridge: exim/src/scripts/os-type,v 1.1 2004/10/06 15:07:40 ph10 Exp $
	3
	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
	7	# it."
	8
	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.
	14
	15	# If EXIM_OSTYPE is set, use it. This allows a manual override.
	16
	17	case "$EXIM_OSTYPE" in ?*) os="$EXIM_OSTYPE";; esac
	18
	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.
	21
	22	case "$os" in '') os=`uname -s`;; esac
	23
	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 $OSTYPE variable. It is known
	26	# to be unhelpful for some systems (under IRIX is it "irix" and under BSDI
	27	# 3.0 it may be "386BSD") but those systems respond to uname -s, so this
	28	# doesn't matter.
	29
	30	case "$os" in '') os="$OSTYPE";; esac
	31
	32	# Failed to find OS type.
	33
	34	case "$os" in
	35	'') echo "" 1>&2
	36	echo "*** Failed to determine the operating system type." 1>&2
	37	echo "" 1>&2
	38	echo UnKnown
	39	exit 1;;
	40	esac
	41
	42	# Clean out gash characters
	43
	44	os=`echo $os \| sed 's,[^-+_.a-zA-Z0-9],,g'`
	45
	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, $OSTYPE was looked at before uname -s, and various shells set it
	49	# to things that are subtly different. It is possible that some of this may
	50	# no longer be needed.
	51
	52	case "$os" in
	53	aix*) os=AIX;;
	54	AIX*) os=AIX;;
	55	bsdi*) os=BSDI;;
	56	BSDOS) os=BSDI;;
	57	BSD_OS) os=BSDI;;
	58	CYGWIN*) os=CYGWIN;;
	59	dgux) os=DGUX;;
	60	freebsd*) os=FreeBSD;;
	61	gnu) os=GNU;;
	62	Irix5) os=IRIX;;
	63	Irix6) os=IRIX6;;
	64	IRIX64) os=IRIX6;;
	65	irix6.5) os=IRIX65;;
	66	IRIX) version=`uname -r`
	67	case "$version" in
	68	5*) os=IRIX;;
	69	6.5) version=`uname -R \| awk '{print $NF}'`
	70	version=`echo $version \| sed 's,[^-+_a-zA-Z0-9],,g'`
	71	os=IRIX$version;;
	72	6*) os=IRIX632;;
	73	esac;;
	74	HI-OSF1-MJ) os=HI-OSF;;
	75	HI-UXMPP) os=HI-OSF;;
	76	hpux*) os=HP-UX;;
	77	linux) os=Linux;;
	78	linux-*) os=Linux;;
	79	Linux-*) os=Linux;;
	80	netbsd*) os=NetBSD;;
	81	openbsd*) os=OpenBSD;;
	82	osf1) os=OSF1;;
	83	qnx*) os=QNX;;
	84	solaris*) os=SunOS5;;
	85	sunos4*) os=SunOS4;;
	86	UnixWare) os=Unixware7;;
	87	Ultrix) os=ULTRIX;;
	88	ultrix*) os=ULTRIX;;
	89	esac
	90
	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.
	94
	95	case "$os" in
	96	SunOS) case `uname -r` in
	97	5*) os="${os}5";;
	98	4*) os="${os}4";;
	99	esac;;
	100
	101	BSDI) case `uname -r` in
	102	3*) os="${os}3";;
	103	4.2*) os="${os}4.2";;
	104	4*) os="${os}4";;
	105	esac;;
	106
	107	HP-UX) case `uname -r` in
	108	A.09*) os="${os}-9";;
	109	esac;;
	110	esac
	111
	112	# Need to distinguish Solaris from the version on the HAL (64bit sparc,
	113	# CC=hcc -DV7). Also need to distinguish different versions of the OS
	114	# for building different binaries.
	115
	116	case "$os" in
	117	SunOS5) case `uname -m` in
	118	sun4H) os="${os}-hal";;
	119	*) os="${os}-`uname -r`";;
	120	esac
	121	;;
	122
	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.
	128
	129	Linux) if [ -L /usr/lib/libc.so ]; then
	130	if [ x"$(file /usr/lib/libc.so \| grep "libc.so.5")"x != xx ]; then
	131	os=Linux-libc5
	132	fi
	133	else
	134	if grep -q libc.so.5 /usr/lib/libc.so; then
	135	os=Linux-libc5
	136	fi
	137	fi
	138	;;
	139
	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
	145	# ELF soon.
	146
	147	NetBSD) if echo __ELF__ \| ${CC-cc} -E - \| grep -q __ELF__ ; then
	148	# Non-ELF system
	149	os="NetBSD-a.out"
	150	fi
	151	;;
	152
	153	esac
	154
	155	# If a generic OS name is requested, some further massaging is needed
	156	# for some systems.
	157
	158	if [ "$1" = '-generic' ]; then
	159	case "$os" in
	160	SunOS5*) os=SunOS5;;
	161	BSDI*) os=BSDI;;
	162	IRIX65*) os=IRIX65;;
	163	esac
	164	fi
	165
	166	# OK, the script seems to have worked. Pass the value back.
	167
	168	echo "$os"
	169
	170	# End of os-type