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+?RCS: $Id: nlist_pfx.U,v 3.0.1.1 1994/10/29 16:26:18 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: nlist_pfx.U,v $
+?RCS: Revision 3.0.1.1 1994/10/29 16:26:18 ram
+?RCS: patch36: added ?F: line for metalint file checking
+?RCS:
+?RCS: Revision 3.0 1993/08/18 12:09:25 ram
+?RCS: Baseline for dist 3.0 netwide release.
+?RCS:
+?MAKE:nlist_pfx nlist_fnd: cat test Myread Oldconfig libnlist \
+ +cc +ccflags
+?MAKE: -pick add $@ %<
+?S:nlist_pfx:
+?S: This variable holds any characters which preceed the symbol name
+?S: when doing an nlist search.
+?S:.
+?S:nlist_fnd:
+?S: This variable holds the member of the nlist structure which is
+?S: nonzero if an nlist search succeeds. Presently, it is always "n_value".
+?S:.
+?C:NLIST_PREFIX:
+?C: This manifest constant holds the string of characters which should
+?C: preceed the symbol name when doing an nlist search.
+?C:.
+?C:NLIST_FOUND:
+?C: This manifest constant holds the member of the nlist structure which
+?C: is nonzero if an nlist search succeeds.
+?C:.
+?H:#define NLIST_PREFIX $nlist_pfx /**/
+?H:#define NLIST_FOUND $nlist_fnd /**/
+?H:.
+?F:!nlisttest
+?T:nlist_loc
+: Nose around for nlist stuff
+echo " "
+echo "Checking out nlist stuff..." >&4
+$cat >nlisttest.c <<'EOCP'
+#include <stdio.h>
+#include <nlist.h>
+
+main(argc, argv)
+int argc;
+char **argv;
+{
+ int (*loc)();
+ extern int hereIam();
+ static struct nlist nl[] = {
+ { "IamNotFound", 0 },
+ { "hereIam", 0 },
+ { "_hereIam", 0 },
+ { ".hereIam", 0 },
+ { "", 0 }
+ };
+
+ loc = hereIam;
+
+ if(argc == 1) {
+ printf("%ld\n", loc);}
+ else {
+ int i;
+ int rc;
+
+ if(nlist("./nlisttest", nl) == -1) exit(-1);
+ i = argv[1][0] - '0';
+ printf("%d %d %d\n", nl[i].n_name, nl[i].n_type, nl[i].n_value);
+ }
+ exit(0);}
+
+int hereIam() {
+
+ return;}
+EOCP
+nlist_fnd=n_value
+if $cc $ccflags -o nlisttest nlisttest.c $libnlist >/dev/null 2>&1 ; then
+ set `./nlisttest`
+ nlist_loc=$1
+
+ set `./nlisttest 0`
+ if $test "$3" = "0" ; then
+ echo "$nlist_fnd is 0 if nlist() fails, as I expected."
+ else
+ $cat <<EOM
+Hello, Jim. We have just discovered that $nlist_fnd was nonzero on an
+nlist() lookup failure! Your mission, should you choose to accept it, is to
+edit either config.sh (to provide a Good value for nlist_fnd) or The Code
+(to find an alternative to NLIST_FOUND), and reporting the full details of
+your success to the MetaConfig Police. Of course, should you fail...
+EOM
+ nlist_fnd="/* Bletch! */ */"
+ fi
+
+ set `./nlisttest 1`
+ if $test "$nlist_loc" = "$3" ; then
+ echo "Symbols are stored with no initial characters."
+ nlist_pfx=
+ else
+ set `./nlisttest 2`
+ if $test "$nlist_loc" = "$3" ; then
+ echo "Symbols are stored with an initial underscore."
+ nlist_pfx=_
+ else
+ set `./nlisttest 3`
+ if $test "$nlist_loc" = "$3" ; then
+ echo "Symbols are stored with an initial dot."
+ nlist_pfx=.
+ else
+ $cat <<EOM
+I can't figure out the symbol prefix!
+You get to edit config.sh and fix 'nlist_pfx' (Configure will let you do this
+at the end of its configuration questions), or config.h and fix the value of
+the NLIST_PREFIX symbol.
+EOM
+ nlist_pfx="/* Bletch! */ */"
+ fi
+ fi
+ fi
+else
+ $cat <<EOM
+I can't get the nlist test program working!
+You get to edit config.sh and fix 'nlist_pfx' (Configure will let you do this
+at the end of its configuration questions) and 'nlist_fnd', or config.h and
+fix the value of the NLIST_PREFIX and NLIST_FOUND symbols.
+EOM
+ nlist_pfx="/* Bletch! */ */"
+ nlist_fnd="/* Bletch! */ */"
+fi
+