[metaconfig.git] / U / modified / libs.U

?RCS: $Id: libs.U,v 3.0.1.6 1997/02/28 16:09:11 ram Exp $
?RCS:
?RCS: Copyright (c) 1991-1993, Raphael Manfredi
?RCS: 
?RCS: You may redistribute only under the terms of the Artistic Licence,
?RCS: as specified in the README file that comes with the distribution.
?RCS: You may reuse parts of this distribution only within the terms of
?RCS: that same Artistic Licence; a copy of which may be found at the root
?RCS: of the source tree for dist 3.0.
?RCS:
?RCS: $Log: libs.U,v $
?RCS: Revision 3.0.1.6  1997/02/28  16:09:11  ram
?RCS: patch61: replaced .a with $_a all over the place
?RCS:
?RCS: Revision 3.0.1.5  1995/07/25  14:12:05  ram
?RCS: patch56: now knows about OS/2 platforms
?RCS:
?RCS: Revision 3.0.1.4  1994/10/29  16:24:22  ram
?RCS: patch36: removed old broken thislib/thatlib processing (ADO)
?RCS:
?RCS: Revision 3.0.1.3  1994/06/20  07:05:44  ram
?RCS: patch30: code cleanup with if/elif by ADO and RAM
?RCS: patch30: undone patch23 for libswanted default setting
?RCS:
?RCS: Revision 3.0.1.2  1994/05/06  15:08:45  ram
?RCS: patch23: now includes ordered default libswanted variable (ADO)
?RCS: patch23: major cleanup for library lookups (ADO)
?RCS:
?RCS: Revision 3.0.1.1  1993/08/25  14:02:31  ram
?RCS: patch6: added default for libs
?RCS:
?RCS: Revision 3.0  1993/08/18  12:09:03  ram
?RCS: Baseline for dist 3.0 netwide release.
?RCS:
?MAKE:libs ignore_versioned_solibs libsfound libsfiles libsdirs: \
	test cat Myread Oldconfig Loc libpth package xlibpth so _a \
	usesocks ccflags
?MAKE:	-pick add $@ %<
?S:libs:
?S:	This variable holds the additional libraries we want to use.
?S:	It is up to the Makefile to deal with it.
?S:.
?S:libsfound:
?S:	This variable holds the full pathnames of the libraries
?S:	we found and accepted.
?S:.
?S:libsfiles:
?S:	This variable holds the filenames aka basenames of the libraries
?S:	we found and accepted.
?S:.
?S:libsdirs:
?S:	This variable holds the directory names aka dirnames of the libraries
?S:	we found and accepted, duplicates are removed.
?S:.
?S:ignore_versioned_solibs:
?S:	This variable should be non-empty if non-versioned shared
?S:	libraries (libfoo.so.x.y) are to be ignored (because they
?S:	cannot be linked against).
?S:.
?T:xxx yyy thislib thisdir libswanted libstyle
?D:libs=''
?X:
?X: This order is chosen so that libraries  -lndir, -ldir, -lucb, -lbsd,
?X: -lBSD, -lPW, and -lx only get used if there are unresolved
?X: routines at link time.  Usually, these are backwards compatability
?X: libraries, and may not be as reliable as the standard c library.
?X:
?X: The -lsocket -linet -lnsl order has been reported to be necessary
?X: for at least one SVR4 implementation.
?X: -lc must proceed -lucb or -lbsd for most Solaris applications.
?X: -lc_s proceeds -lc so we pick up the shared library version, if
?X: it is available.
?X:
?X: The ordering of c, posix, and cposix is a guess and almost
?X: certainly wrong on about half of all systems.
?X:
?X: Set proper libswanted in your private Myinit.U if needed.
?X:
?X:: default ordered library list
?X:libswanted='net socket inet nsl nm sdbm gdbm ndbm dbm malloc dl'
?X:libswanted="$libswanted dld sun m c_s c posix cposix ndir dir ucb"
?X:libswanted="$libswanted bsd BSD PW x iconv"
?X:
?INIT:: default library list
?INIT:libswanted=''
?INIT:: some systems want to use only the non-versioned libso:s
?INIT:ignore_versioned_solibs=''
?LINT:use libscheck
: Looking for optional libraries
echo " "
echo "Checking for optional libraries..." >&4
case "$libs" in
' '|'') dflt='';;
*) dflt="$libs";;
esac
case "$libswanted" in
'') libswanted='c_s';;
esac
?X: libsocks has nasty naming.
case "$usesocks" in
$define)
	libswanted="$libswanted socks5 socks5_sh"
	;;
esac
for thislib in $libswanted; do
?X:
?X: Comparisons via case statement use the string " $dflt " to ensure that
?X: each library is separated by a space. That way, by looking to something
?X: like *"-l$thislib "*, we ensure we find -lm and not -lmalloc (which was
?X: the case with the old looking pattern *-l$thislib*.
?X:
	for thisdir in $libpth; do
	    xxx=''
	    if $test ! -f "$xxx" -a "X$ignore_versioned_solibs" = "X"; then
		xxx=`ls $thisdir/lib$thislib.$so.[0-9] 2>/dev/null|tail -1`
	        $test -f "$xxx" && eval $libscheck
		$test -f "$xxx" && libstyle=shared
	    fi
	    if test ! -f "$xxx"; then
		xxx=$thisdir/lib$thislib.$so
	        $test -f "$xxx" && eval $libscheck
		$test -f "$xxx" && libstyle=shared
	    fi	
	    if test ! -f "$xxx"; then
		xxx=$thisdir/lib$thislib$_a
	        $test -f "$xxx" && eval $libscheck
		$test -f "$xxx" && libstyle=static
	    fi
	    if test ! -f "$xxx"; then
		xxx=$thisdir/$thislib$_a
	        $test -f "$xxx" && eval $libscheck
		$test -f "$xxx" && libstyle=static
	    fi
	    if test ! -f "$xxx"; then
		xxx=$thisdir/lib${thislib}_s$_a
	        $test -f "$xxx" && eval $libscheck
		$test -f "$xxx" && libstyle=static
	    fi
	    if test ! -f "$xxx"; then
		xxx=$thisdir/Slib$thislib$_a
	        $test -f "$xxx" && eval $libscheck
		$test -f "$xxx" && libstyle=static
	    fi
	    if $test -f "$xxx"; then
		case "$libstyle" in
		shared) echo "Found -l$thislib (shared)." ;;
		static) echo "Found -l$thislib." ;;
		*)      echo "Found -l$thislib ($libstyle)." ;;
		esac
		case " $dflt " in
		*"-l$thislib "*);;
		*) dflt="$dflt -l$thislib"
                   libsfound="$libsfound $xxx"
                   yyy=`basename $xxx`
                   libsfiles="$libsfiles $yyy"
                   yyy=`echo $xxx|sed "s@/$yyy\\$@@"`
                   case " $libsdirs " in
                   *" $yyy "*) ;;
                   *) libsdirs="$libsdirs $yyy" ;;
                   esac
		   ;;
		esac
		break
	    fi	
	done
	if $test ! -f "$xxx"; then
	    echo "No -l$thislib."
	fi
done
set X $dflt
shift
dflt="$*"
case "$libs" in
'') dflt="$dflt";;
*) dflt="$libs";;
esac
case "$dflt" in
' '|'') dflt='none';;
esac

$cat <<EOM

In order to compile $package on your machine, a number of libraries
are usually needed.  Include any other special libraries here as well.
Say "none" for none.  The default list is almost always right.
EOM

echo " "
rp="What libraries to use?"
. ./myread
case "$ans" in
none) libs=' ';;
*) libs="$ans";;
esac
Commit	Line	Data
959f3c4c JH	1	?RCS: $Id: libs.U,v 3.0.1.6 1997/02/28 16:09:11 ram Exp $
	2	?RCS:
	3	?RCS: Copyright (c) 1991-1993, Raphael Manfredi
	4	?RCS:
	5	?RCS: You may redistribute only under the terms of the Artistic Licence,
	6	?RCS: as specified in the README file that comes with the distribution.
	7	?RCS: You may reuse parts of this distribution only within the terms of
	8	?RCS: that same Artistic Licence; a copy of which may be found at the root
	9	?RCS: of the source tree for dist 3.0.
	10	?RCS:
	11	?RCS: $Log: libs.U,v $
	12	?RCS: Revision 3.0.1.6 1997/02/28 16:09:11 ram
	13	?RCS: patch61: replaced .a with $_a all over the place
	14	?RCS:
	15	?RCS: Revision 3.0.1.5 1995/07/25 14:12:05 ram
	16	?RCS: patch56: now knows about OS/2 platforms
	17	?RCS:
	18	?RCS: Revision 3.0.1.4 1994/10/29 16:24:22 ram
	19	?RCS: patch36: removed old broken thislib/thatlib processing (ADO)
	20	?RCS:
	21	?RCS: Revision 3.0.1.3 1994/06/20 07:05:44 ram
	22	?RCS: patch30: code cleanup with if/elif by ADO and RAM
	23	?RCS: patch30: undone patch23 for libswanted default setting
	24	?RCS:
	25	?RCS: Revision 3.0.1.2 1994/05/06 15:08:45 ram
	26	?RCS: patch23: now includes ordered default libswanted variable (ADO)
	27	?RCS: patch23: major cleanup for library lookups (ADO)
	28	?RCS:
	29	?RCS: Revision 3.0.1.1 1993/08/25 14:02:31 ram
	30	?RCS: patch6: added default for libs
	31	?RCS:
	32	?RCS: Revision 3.0 1993/08/18 12:09:03 ram
	33	?RCS: Baseline for dist 3.0 netwide release.
	34	?RCS:
d088635c	35	?MAKE:libs ignore_versioned_solibs libsfound libsfiles libsdirs: \
508a21cd	36	test cat Myread Oldconfig Loc libpth package xlibpth so _a \
4ee071c7	37	usesocks ccflags
959f3c4c JH	38	?MAKE: -pick add $@ %<
	39	?S:libs:
	40	?S: This variable holds the additional libraries we want to use.
	41	?S: It is up to the Makefile to deal with it.
	42	?S:.
d088635c JH	43	?S:libsfound:
	44	?S: This variable holds the full pathnames of the libraries
	45	?S: we found and accepted.
	46	?S:.
	47	?S:libsfiles:
	48	?S: This variable holds the filenames aka basenames of the libraries
	49	?S: we found and accepted.
	50	?S:.
	51	?S:libsdirs:
	52	?S: This variable holds the directory names aka dirnames of the libraries
	53	?S: we found and accepted, duplicates are removed.
	54	?S:.
959f3c4c JH	55	?S:ignore_versioned_solibs:
	56	?S: This variable should be non-empty if non-versioned shared
	57	?S: libraries (libfoo.so.x.y) are to be ignored (because they
	58	?S: cannot be linked against).
	59	?S:.
d12857d9	60	?T:xxx yyy thislib thisdir libswanted libstyle
959f3c4c JH	61	?D:libs=''
	62	?X:
	63	?X: This order is chosen so that libraries -lndir, -ldir, -lucb, -lbsd,
	64	?X: -lBSD, -lPW, and -lx only get used if there are unresolved
	65	?X: routines at link time. Usually, these are backwards compatability
	66	?X: libraries, and may not be as reliable as the standard c library.
	67	?X:
	68	?X: The -lsocket -linet -lnsl order has been reported to be necessary
	69	?X: for at least one SVR4 implementation.
	70	?X: -lc must proceed -lucb or -lbsd for most Solaris applications.
	71	?X: -lc_s proceeds -lc so we pick up the shared library version, if
	72	?X: it is available.
	73	?X:
	74	?X: The ordering of c, posix, and cposix is a guess and almost
	75	?X: certainly wrong on about half of all systems.
	76	?X:
	77	?X: Set proper libswanted in your private Myinit.U if needed.
	78	?X:
	79	?X:: default ordered library list
	80	?X:libswanted='net socket inet nsl nm sdbm gdbm ndbm dbm malloc dl'
	81	?X:libswanted="$libswanted dld sun m c_s c posix cposix ndir dir ucb"
d088635c	82	?X:libswanted="$libswanted bsd BSD PW x iconv"
959f3c4c JH	83	?X:
	84	?INIT:: default library list
	85	?INIT:libswanted=''
	86	?INIT:: some systems want to use only the non-versioned libso:s
	87	?INIT:ignore_versioned_solibs=''
d12857d9	88	?LINT:use libscheck
959f3c4c JH	89	: Looking for optional libraries
	90	echo " "
	91	echo "Checking for optional libraries..." >&4
	92	case "$libs" in
	93	' '\|'') dflt='';;
	94	*) dflt="$libs";;
	95	esac
	96	case "$libswanted" in
	97	'') libswanted='c_s';;
	98	esac
	99	?X: libsocks has nasty naming.
	100	case "$usesocks" in
	101	$define)
	102	libswanted="$libswanted socks5 socks5_sh"
	103	;;
	104	esac
	105	for thislib in $libswanted; do
959f3c4c JH	106	?X:
	107	?X: Comparisons via case statement use the string " $dflt " to ensure that
	108	?X: each library is separated by a space. That way, by looking to something
	109	?X: like "-l$thislib ", we ensure we find -lm and not -lmalloc (which was
	110	?X: the case with the old looking pattern -l$thislib.
	111	?X:
4ee071c7 JH	112	for thisdir in $libpth; do
	113	xxx=''
	114	if $test ! -f "$xxx" -a "X$ignore_versioned_solibs" = "X"; then
	115	xxx=`ls $thisdir/lib$thislib.$so.[0-9] 2>/dev/null\|tail -1`
	116	$test -f "$xxx" && eval $libscheck
	117	$test -f "$xxx" && libstyle=shared
	118	fi
	119	if test ! -f "$xxx"; then
	120	xxx=$thisdir/lib$thislib.$so
	121	$test -f "$xxx" && eval $libscheck
	122	$test -f "$xxx" && libstyle=shared
	123	fi
	124	if test ! -f "$xxx"; then
	125	xxx=$thisdir/lib$thislib$_a
	126	$test -f "$xxx" && eval $libscheck
	127	$test -f "$xxx" && libstyle=static
	128	fi
	129	if test ! -f "$xxx"; then
	130	xxx=$thisdir/$thislib$_a
	131	$test -f "$xxx" && eval $libscheck
	132	$test -f "$xxx" && libstyle=static
	133	fi
	134	if test ! -f "$xxx"; then
	135	xxx=$thisdir/lib${thislib}_s$_a
	136	$test -f "$xxx" && eval $libscheck
	137	$test -f "$xxx" && libstyle=static
	138	fi
	139	if test ! -f "$xxx"; then
	140	xxx=$thisdir/Slib$thislib$_a
	141	$test -f "$xxx" && eval $libscheck
	142	$test -f "$xxx" && libstyle=static
	143	fi
	144	if $test -f "$xxx"; then
508a21cd	145	case "$libstyle" in
4ee071c7 JH	146	shared) echo "Found -l$thislib (shared)." ;;
	147	static) echo "Found -l$thislib." ;;
	148	*) echo "Found -l$thislib ($libstyle)." ;;
508a21cd	149	esac
959f3c4c JH	150	case " $dflt " in
959f3c4c JH	151	"-l$thislib ");;
4ee071c7	152	*) dflt="$dflt -l$thislib"
d088635c JH	153	libsfound="$libsfound $xxx"
	154	yyy=`basename $xxx`
	155	libsfiles="$libsfiles $yyy"
	156	yyy=`echo $xxx\|sed "s@/$yyy\\$@@"`
	157	case " $libsdirs " in
	158	" $yyy ") ;;
	159	*) libsdirs="$libsdirs $yyy" ;;
	160	esac
	161	;;
959f3c4c	162	esac
4ee071c7 JH	163	break
	164	fi
	165	done
	166	if $test ! -f "$xxx"; then
	167	echo "No -l$thislib."
959f3c4c JH	168	fi
	169	done
	170	set X $dflt
	171	shift
	172	dflt="$*"
	173	case "$libs" in
	174	'') dflt="$dflt";;
	175	*) dflt="$libs";;
	176	esac
	177	case "$dflt" in
	178	' '\|'') dflt='none';;
	179	esac
	180
	181	$cat <<EOM
	182
	183	In order to compile $package on your machine, a number of libraries
	184	are usually needed. Include any other special libraries here as well.
	185	Say "none" for none. The default list is almost always right.
	186	EOM
	187
	188	echo " "
	189	rp="What libraries to use?"
	190	. ./myread
	191	case "$ans" in
	192	none) libs=' ';;
	193	*) libs="$ans";;
	194	esac
	195