1 ?RCS: $Id: Loc.U,v 3.0.1.10 1997/02/28 15:04:16 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.
12 ?RCS: Revision 3.0.1.10 1997/02/28 15:04:16 ram
13 ?RCS: patch61: allow users to specify paths on the command line
14 ?RCS: patch61: will now substitute cp for ln if not supported
16 ?RCS: Revision 3.0.1.9 1995/09/25 09:11:24 ram
17 ?RCS: patch59: commented the purpose of the #un-def directive
18 ?RCS: patch59: abort Configure run when mandatory command is missing
20 ?RCS: Revision 3.0.1.8 1995/07/25 13:40:40 ram
21 ?RCS: patch56: now knows about OS/2 platforms
23 ?RCS: Revision 3.0.1.7 1995/01/11 15:13:37 ram
24 ?RCS: patch45: protected "sh -c" within backquotes for Linux and SGI
25 ?RCS: patch45: added path lookup for the 'comm' program
27 ?RCS: Revision 3.0.1.6 1994/10/29 15:56:14 ram
28 ?RCS: patch36: added ?F: line for metalint file checking
29 ?RCS: patch36: be careful and guard against wildcard searching (ADO)
31 ?RCS: Revision 3.0.1.5 1994/06/20 06:54:55 ram
32 ?RCS: patch30: now locates find
34 ?RCS: Revision 3.0.1.4 1994/05/13 15:18:15 ram
35 ?RCS: patch27: added byacc to the trylist (ADO)
36 ?RCS: patch27: lint lines reformatted (ADO)
38 ?RCS: Revision 3.0.1.3 1994/01/24 14:01:44 ram
39 ?RCS: patch16: added metalint hint on changed PATH variable
41 ?RCS: Revision 3.0.1.2 1993/12/15 08:16:52 ram
42 ?RCS: patch15: now set _test variable when test is built-in
43 ?RCS: patch15: fixed rare cases where echo is not needed
45 ?RCS: Revision 3.0.1.1 1993/09/13 15:47:13 ram
46 ?RCS: patch10: test program not always in /bin/test (WAD)
48 ?RCS: Revision 3.0 1993/08/18 12:05:05 ram
49 ?RCS: Baseline for dist 3.0 netwide release.
52 ?X: This unit produces a shell script "loc" which can be used to find out
53 ?X: where in a list of directories something is. It then uses loc to
54 ?X: determine the location of commonly used programs. It leaves loc sitting
55 ?X: around for other Configure units to use, but arranges for its demise
56 ?X: at the end of Configure.
58 ?X: To add a new program to find, add it both to the ?MAKE: line and to either
59 ?X: the loclist or trylist variable.
61 ?X: I put startsh at the end of the dependency list, in order to avoid the
62 ?X: loading of the spitshell unit before the instructions.
64 ?MAKE:Loc Mcc awk ar bash bison byacc cat chgrp chmod chown \
65 comm compress cp cpio cpp csh date echo egrep emacs expr find flex \
66 gzip grep inews ksh less line lint ln lp lpr ls mail mailx \
67 make mkdir more mv nm nroff perl pg pmake pr rm rmail sed sendmail \
68 shar sleep smail sort submit tail tar tbl tee test touch tr troff \
69 uname uniq uuname vi zcat zip: eunicefix n c Instruct Myread \
71 ?MAKE: -pick weed $@ %<
72 ?LINT:describe Loc Mcc awk ar bash bison byacc cat chgrp chmod chown \
73 comm compress cp cpio cpp csh date echo egrep emacs expr find flex \
74 gzip grep inews ksh less line lint ln lp lpr ls mail mailx \
75 make mkdir more mv nm nroff perl pg pmake pr rm rmail sed sendmail \
76 shar sleep smail sort submit tail tar tbl tee test touch tr troff \
77 uname uniq uuname vi zcat zip
78 ?V::pth loclist trylist
80 ?T:thisthing thing xxx dir file say _test DJGPP
82 : find out where common programs are
84 echo "Locating common programs..." >&4
97 if test -d \$dir/\$thing; then
103 ?X: Be careful in case thing includes wildcards that might expand to multiple
104 ?X: files. Choose the last one. This happens when searching for shared
105 ?X: libraries with version numbers. How to choose which one we want is
106 ?X: probably an insoluble problem, in general.
107 ?X: Some folks leave things like libc.so.orig around w/o read
108 ?X: permission. A -r test would handle that, but since ./loc is
109 ?X: also used to find executables (which are installed w/o read
110 ?X: permission on SCO ODT 3.0, we can't include the -r test.
111 for thisthing in \$dir/\$thing; do
112 : just loop through to pick last item
114 if test -f \$thisthing; then
117 elif test -f \$dir/\$thing.exe; then
118 if test -n "$DJGPP"; then
119 echo \$dir/\$thing.exe
121 : on Eunice apparently
207 ?LINT:set Loc Mcc awk ar bash bison byacc cat chgrp chmod chown \
208 comm compress cp cpio cpp csh date echo egrep emacs expr find flex \
209 gzip grep inews ksh less line lint ln lp lpr ls mail mailx \
210 make mkdir more mv nm nroff perl pg pmake pr rm rmail sed sendmail \
211 shar sleep smail sort submit tail tar tbl tee test touch tr troff \
212 uname uniq uuname vi zcat zip
213 pth=`echo $PATH | sed -e "s/$p_/ /g"`
214 pth="$pth /lib /usr/lib"
215 for file in $loclist; do
217 ?X: Allow them to -Dmake=pmake on the command line for instance...
218 ?X: If the file is not fully qualified, as in -Dmake=pmake, then we
219 ?X: look the for the specified command (pmake here). If they say
220 ?X: -Dmake=/sbin/make for instance, then we make sure the file
221 ?X: exists, or we die...
226 if test -f "$xxx"; then
229 echo "WARNING: no $xxx -- ignoring your setting for $file." >&4
230 xxx=`./loc $file $file $pth`
233 '') xxx=`./loc $file $file $pth`;;
234 *) xxx=`./loc $xxx $xxx $pth`;;
240 echo $file is in $xxx.
242 ?X: Under OS/2, we have PC-like paths
244 echo $file is in $xxx.
247 echo "I don't know where '$file' is, and my life depends on it." >&4
248 echo "Go find a public domain implementation or fix your PATH setting!" >&4
254 echo "Don't worry if any of the following aren't found..."
256 for file in $trylist; do
257 ?X: Allow them to -Dmake=pmake on the command line for instance (see above)
261 if test -f "$xxx"; then
264 echo "WARNING: no $xxx -- ignoring your setting for $file." >&4
265 xxx=`./loc $file $file $pth`
268 '') xxx=`./loc $file $file $pth`;;
269 *) xxx=`./loc $xxx $xxx $pth`;;
275 echo $file is in $xxx.
277 ?X: Under OS/2, we have PC-like paths
279 echo $file is in $xxx.
282 echo "I don't see $file out there, $say."
289 echo "Substituting grep for egrep."
296 echo "Substituting cp for ln."
303 echo "Hopefully test is built into your sh."
306 if `sh -c "PATH= test true" >/dev/null 2>&1`; then
307 echo "Using the test built into your sh."
309 ?X: We need to set both test and _test, since Oldconfig.U will use the _test
310 ?X: value to systematically restore computed paths, which may be wrong if
311 ?X: we choose to load an old config.sh generated on another platform.
321 echo "Hopefully echo is built into your sh."
323 ?X: For those rare cases where we don't need $echo...
327 echo "Checking compatibility between $echo and builtin echo (if any)..." >&4
328 $echo $n "hi there$c" >foo1
329 echo $n "hi there$c" >foo2
330 if cmp foo1 foo2 >/dev/null 2>&1; then
331 echo "They are compatible. In fact, they may be identical."
338 They are not compatible! You are probably running ksh on a non-USG system.
339 I'll have to use $echo instead of the builtin, since Bourne shell doesn't
340 have echo built in and we may have to run some Bourne shell scripts. That
341 means I'll have to use '$n$c' to suppress newlines now. Life is ridiculous.
344 $echo $n "The star should be here-->$c"