1 ?RCS: $Id: Head.U,v 3.0.1.9 1997/02/28 15:02:09 ram Exp $
3 ?RCS: Copyright (c) 1991-1993, Raphael Manfredi
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.
11 ?RCS: $Log: Head.U,v $
12 ?RCS: Revision 3.0.1.9 1997/02/28 15:02:09 ram
13 ?RCS: patch61: make sure we unset CDPATH for shells that support this
14 ?RCS: patch61: improved Korn shell detection and handling
16 ?RCS: Revision 3.0.1.8 1995/07/25 13:40:02 ram
17 ?RCS: patch56: added SVR4-ish /opt directories to path list (ADO)
18 ?RCS: patch56: OS/2 platforms are using another path separator
20 ?RCS: Revision 3.0.1.7 1995/03/21 08:46:15 ram
21 ?RCS: patch52: definition of paths wrongly added spurious ':' chars
23 ?RCS: Revision 3.0.1.6 1994/10/29 15:54:19 ram
24 ?RCS: patch36: make sure ENV is unset before calling /bin/ksh
26 ?RCS: Revision 3.0.1.5 1994/08/29 16:03:44 ram
27 ?RCS: patch32: now sets PATH only using existing directories
29 ?RCS: Revision 3.0.1.4 1994/06/20 06:54:28 ram
30 ?RCS: patch30: now computes its invocation name into 'me'
31 ?RCS: patch30: symbol me is made visible to all units read-only
33 ?RCS: Revision 3.0.1.3 1993/12/15 08:15:07 ram
34 ?RCS: patch15: added /sbin:/usr/sbin:/usr/libexec in PATH for BSD/386
36 ?RCS: Revision 3.0.1.2 1993/11/10 17:32:35 ram
37 ?RCS: patch14: ensure PATH is reset to '.' before testing for alias
39 ?RCS: Revision 3.0.1.1 1993/08/27 14:38:07 ram
40 ?RCS: patch7: not all 'test' programs support the -x option
42 ?RCS: Revision 3.0 1993/08/18 12:04:58 ram
43 ?RCS: Baseline for dist 3.0 netwide release.
46 ?X: This is the very first unit in the Configure script. It is mostly just
47 ?X: things to keep people from getting into a tizzy right off the bat.
50 ?MAKE: -pick wipe $@ %<
52 ?T:argv Id p paths OS2_SHELL DJGPP
53 ?T:inksh needksh avoidksh newsh changesh reason
54 ?LINT:extern ENV CDPATH SHELL MACHTYPE
55 ?LINT:change ENV CDPATH
58 # If these # comments don't work, trim them. Don't worry about any other
59 # shell scripts, Configure will trim # comments from them for you.
61 # (If you are trying to port this package to a machine without sh,
62 # I would suggest you have a look at the prototypical config_h.SH file
63 # and edit it to reflect your system. Some packages may include samples
64 # of config.h for certain machines, so you might look for one of those.)
67 ?X: NOTE THAT A CONFIGURE SCRIPT IS IN THE PUBLIC DOMAIN (whether or not
68 ?X: the software which uses it is in the public domain).
70 # Yes, you may rip this off to use in other distribution packages. This
71 # script belongs to the public domain and cannot be copyrighted.
74 ?X: WE ASK YOU NOT TO REMOVE OR ALTER THE FOLLOWING PARAGRAPH, PLEASE:
76 # (Note: this Configure script was generated automatically. Rather than
77 # working with this copy of Configure, you may wish to get metaconfig.
78 # The dist-3.0 package (which contains metaconfig) was posted in
79 # comp.sources.misc and is available on CPAN under authors/id/RAM so
80 # you may fetch it yourself from your nearest archive site.)
84 ?X: If you develop you own version of metaconfig based on this work,
85 ?X: you have to add some comments telling that the script was generated
86 ?X: by your version, not mine: It credits your work.
89 # $Id: Head.U,v 3.0.1.9 1997/02/28 15:02:09 ram Exp $
91 # Generated on <DATE> [metaconfig <VERSION> PL<PATCHLEVEL>]
92 # (with additional metaconfig patches by <MAINTLOC>)
97 SCO csh still thinks true is false. Write to SCO today and tell them that next
98 year Configure ought to "rm /bin/csh" unless they fix their blasted shell. :-)
100 (Actually, Configure ought to just patch csh in place. Hmm. Hmmmmm. All
101 we'd have to do is go in and swap the && and || tokens, wherever they are.)
103 [End of diatribe. We now return you to your regularly scheduled programming...]
107 OOPS! You naughty creature! You didn't run Configure with sh!
108 I will attempt to remedy the situation by running sh for you...
111 true || cat c1$$ c2$$
112 true || exec sh $0 $argv:q
114 (exit $?0) || cat c2$$
115 (exit $?0) || exec sh $0 $argv:q
118 : compute my invocation name
122 me=`echo $0 | sed -e 's!.*/\(.*\)!\1!' 2>/dev/null`
128 ?X: To be able to run under OS/2, we must detect that early enough to use
129 ?X: the proper path separator, stored in $p_. It is : on UNIX and ; on
130 ?X: DOSish systems such as OS/2.
132 : Proper separator for the PATH environment variable
134 : On OS/2 this directory should exist if this is not floppy only system :-]
135 if test -d c:/. ; then
136 if test -n "$OS2_SHELL"; then
138 PATH=`cmd /c "echo %PATH%" | tr '\\\\' / `
139 ?X: That's a bug in ksh5.22
140 OS2_SHELL=`cmd /c "echo %OS2_SHELL%" | tr '\\\\' / | tr '[A-Z]' '[a-z]'`
141 elif test -n "$DJGPP"; then
142 case "X${MACHTYPE:-nonesuchmach}" in
150 ?X: There are two schools of thoughts here. Some people correctly argue that
151 ?X: the user has a better chance than we do of setting a reasonable PATH and
152 ?X: others argue that Configure is the best place there is to set up a suitable
153 ?X: PATH. Well, here we try to compromize by keeping the user's PATH and
154 ?X: appending some directories which are known to work on some machine or the
155 ?X: other. The rationale behind this being that a novice user might not have a
156 ?X: proper environment variable set, and some directories like /etc (where
157 ?X: chown is located on some BSD systems) may be missing--RAM.
159 ?X: SVR4 adds an /opt directory for optional packages. Some sites use
160 ?X: various permutations on /opt as opposed to /usr or /usr/local.-- ADO
162 ?X: We only add directories that are not already in the PATH of the
163 ?X: user and the directories must exist also.
165 : Proper PATH setting
166 paths='/bin /usr/bin /usr/local/bin /usr/ucb /usr/local /usr/lbin'
167 paths="$paths /opt/bin /opt/local/bin /opt/local /opt/lbin"
168 paths="$paths /usr/5bin /etc /usr/gnu/bin /usr/new /usr/new/bin /usr/nbin"
169 paths="$paths /opt/gnu/bin /opt/new /opt/new/bin /opt/nbin"
170 paths="$paths /sys5.3/bin /sys5.3/usr/bin /bsd4.3/bin /bsd4.3/usr/ucb"
171 paths="$paths /bsd4.3/usr/bin /usr/bsd /bsd43/bin /usr/ccs/bin"
172 paths="$paths /etc /usr/lib /usr/ucblib /lib /usr/ccs/lib"
173 paths="$paths /sbin /usr/sbin /usr/libexec"
177 case "$p_$PATH$p_" in
179 *) test -d $p && PATH=$PATH$p_$p ;;
186 : shall we be using ksh?
192 ?X: Use (alias -x) and not (alias) since zsh and bash recognize the alias
193 ?X: builtin but not the -x option which is typically ksh...
194 ?X: We need to set up PATH before calling the "alias" built-in since some
195 ?X: systems like HP-UX have a binary called /bin/alias.
196 if (PATH=.; alias -x) >/dev/null 2>&1; then
199 ?X: On HP-UX, large Configure scripts may exercise a bug in /bin/sh, use ksh
200 if test -f /hp-ux -a -f /bin/ksh; then
201 needksh='to avoid sh bug in "here document" expansion'
203 ?X: On AIX4, /bin/sh is really ksh and it causes problems, use sh
204 if test -d /usr/lpp -a -f /usr/bin/bsh -a -f /usr/bin/uname; then
205 if test X`/usr/bin/uname -v` = X4; then
206 avoidksh="to avoid AIX 4's /bin/sh"
210 ?X: On Digital UNIX, /bin/sh may start up buggy /bin/ksh, use sh
211 if test -f /osf_boot -a -f /usr/sbin/setld; then
212 if test X`/usr/bin/uname -s` = XOSF1; then
213 avoidksh="to avoid Digital UNIX' ksh"
215 unset BIN_SH # if this is 'xpg4' sh will start up ksh
218 ?X: If we are not in ksh and need it, then feed us back to it
219 case "$inksh/$needksh" in
221 ?X: Unset ENV to avoid any ~/.kshrc that could alias cd or whatever...
227 ?X: If we are in ksh and must avoid it, then feed us back to a new shell
228 case "$inksh/$avoidksh" in
234 ?X: Warn them if they use ksh on other systems, which are those where
235 ?X: we don't need ksh nor want to avoid it explicitely, yet are using it.
236 case "$inksh/$needksh-$avoidksh-" in
239 (I see you are using the Korn shell. Some ksh's blow up on $me,
240 mainly on older exotic systems. If yours does, try the Bourne shell instead.)
246 echo "(Feeding myself to $newsh $reason.)"
247 ?X: Make sure they didn't say sh <Configure by checking whether $0 ends
248 ?X: with Configure or not. If they did say sh <../../Configure, then too
249 ?X: bad for them anyway, since we lost that path indication...
250 ?X: Otherwise, execing $0 ensures we keep the full remote source dir
251 ?X: indication for src.U.
253 Configure|*/Configure) exec $newsh $0 "$@";;
254 *) exec $newsh Configure "$@";;
259 ?X: Unset CDPATH to avoid surprises when using cd under some shells
260 ?X: Can't unset it because that's not portable to very old shells.
261 ?X: Can't set it to '' because then bash 2.02 won't do "cd UU" --AD 6/98.
262 ?X: Don't want to set it to '.' because then ksh prints out the
263 ?X: name of the directory every time you cd to it. --AD 6/98
264 ?X: In order to inflict the least harm, change it only if it's set.
265 : if needed set CDPATH to a harmless value that is not chatty
266 : avoid bash 2.02 problems with empty CDPATH.
270 *bash*) CDPATH='.' ;;
275 : Configure runs within the UU subdirectory
276 test -d UU || mkdir UU
277 ?X: Use ./* to avoid any confirmation prompts from enhanced shells -- WED