%% /u/sy/beebe/tex/bibclean/2-11/README, Mon Oct  2 10:01:31 1995
%% Edit by Nelson H. F. Beebe <beebe@sunrise>

========================================================================

==========
Jump start
==========

As with most GNUware, you can build, test, and install this program on
most UNIX systems by these simple steps

csh et amici:
	setenv CC ...your favorite C or C++ compiler...
	./configure && make all check install

sh et amici:
	CC=...your favorite C or C++ compiler...
	export CC
	./configure && make all check install

If you don't set the CC environment variable, then gcc (or cc, if gcc
is not available) will be assumed.

If you wish to undo a "make install", just do "make uninstall"; this
will remove any files in system directories put there by "make
install".

See below for further details, and for instructions for non-UNIX systems.
	

============
Introduction
============

This directory contains bibclean, a BibTeX prettyprinter, portability
verifier, and syntax checker.  It can be used to find errors in .bib
files, as well as to standardize their format for readability and
editing convenience.  It can also be used to convert Scribe-format
bibliographies to BibTeX form.

Binary executables for IBM PC DOS, DEC Alpha OpenVMS, DEC VAX VMS, and
Intel x86 Linux may be included in the distribution.

If you do not require either the IBM PC DOS or LINUX, or the DEC VMS
(Alpha and VAX) versions, then you can save about 2.5MB of disk space
by deleting the ibmpc and vms subdirectories.

The default pattern matching in bibclean.c is selected by
HAVE_PATTERNS; with it, no regular-expression library support is
needed.  Should you wish to compile with regular-expression support
instead of the HAVE_PATTERNS code, and your system does not have
compile()/step (HAVE_REGEXP), or re_comp()/re_exec() (HAVE_RECOMP),
you may be able to use the regex-?-??.tar.Z distribution from the Free
Software Foundation, available on prep.ai.mit.edu in /pub/gnu.

In most cases, the HAVE_PATTERNS code is recommended, since it will
give identical results across all machines.  I was prompted to write
it after discovering that there was considerable variety in the
regular expression library codes that resulted in different matching
on different machines, a most unsatisfactory situation.

Please report all problems, suggestions, and comments to the author:

	Nelson H. F. Beebe
	Center for Scientific Computing
	University of Utah
	Department of Mathematics, 322 INSCC
	155 S 1400 E RM 233
	Salt Lake City, UT 84112-0090
	USA
	Tel: +1 801 581 5254
	FAX: +1 801 585 1640, +1 801 581 4148
	Email: beebe@math.utah.edu, beebe@acm.org, beebe@ieee.org (Internet)
	WWW URL: http://www.math.utah.edu/~beebe/


============
Installation
============

Starting with version 2.10.1, bibclean has been adapted to use the GNU
autoconf automatic configuration system for UNIX installations.

GNU autoconf is run at the author's site to produce the configure
script from configure.in.

The configure script is run at each installer's UNIX site to produce
Makefile from Makefile.in, and config.h from config.hin.  The
configure script is a large (1800+ lines) Bourne shell program that
investigates various aspects of the local C implementation, and
records its conclusions in config.h.  Interestingly, its probes
uncovered a bug in one compiler: lcc 3.4b on Sun Solaris 2.x has an
incorrect definition of toupper() in its ctype.h!

autoconf, at least at the current 2.4 version, is not as C++-aware as
it should be.  The Makefile must carry out minor edits of the
configure script to get it to even work with C++ compilers.  The small
test programs run by configure to determine the existence of assorted
Standard C library functions all lead to incorrect conclusions for
config.h, because they intentionally contain function prototypes with
different argument types.  Since C++ functions are compiled into
external names that encode the function and argument types, along with
the function name, these prototypes produce references to non-existent
functions, causing program linking to fail.  Fortunately, I've been
able to fix this problem too with additional automatic edits, all
carried out by "make configure".  

Should you do a "make maintainer-clean" [NOT recommended, except at the
author's site], the configure script will be deleted, and you will
need recent versions of both GNU m4 and autoconf correctly installed
to reconstruct things, which can be done this way:

	autoconf	# Regenerate unedited configure
	./configure	# Regenerate config.h and Makefile
	rm configure	# delete configure
	make configure	# Regenerate edited configure

For convenience and safety, the distribution includes a subdirectory
named save that contains read-only copies of the files Makefile,
config.h, and configure created by autoconf and "make configure".
This will allow recovery from a lost or damaged configure file.

Suitable hand-crafted config.h files are provided for non-UNIX
systems, and in the unlikely event of a failure of the configure
script on a UNIX system, config.h can be manually produced from a copy
of config.hin with a few minutes' editing work. If you do this,
remember to save a copy of your config.h under a different name,
because running configure will destroy it.  If you have GNU autoconf
installed (the installation is very simple and source code is
available from prep.ai.mit.edu:/pub/gnu/autoconf-x.y.tar.gz), you
might try augmenting config.hin instead, then run autoconf and
configure.

Thus, on UNIX, installation normally consists of just two steps
(assuming a csh-compatible shell):

	setenv CC ...your favorite C or C++ compiler...
	./configure && make all check install

If you like, add OPT='your favorite optimization flags' to the make
command; by default, only -g (debug) is assumed.  If your compiler
won't accept -g with other optimization levels, then set CFLAGS
instead of OPT on the command line; be sure NOT to override any
non-optimizing flags in the CFLAGS set in the Makefile.

The GNU standard installation directories /usr/local/bin for binaries,
and /usr/local/man/man1 for manual pages are assumed.  The prefix
/usr/local can be overridden by providing an alternate definition on
the command line:

	make prefix=/some/other/path install

After installation, you can do
	make distclean
to restore the directories to their distribution state.  You should
also do this between builds for different architectures from the same
source tree; neglecting to do to will almost certainly lead to
failure, because the config.cache file created by configure will lead
to an incorrect config.h for the next build.

The Debianization by Henning Makholm adds a few new arguments to
the ./configure script:

--with-pager=/usr/bin/less
  (or some other value of /usr/bin/less) suppresses the internal pager
  that bibclean normally uses to display the help text for bibclean -help.
  Instead, the help text will be piped to the specified program. If the
  user has set $PAGER at run time, that will be used instead.

--with-fhs-rcfiles
  will cause bibclean to look for its system-wide configuration in
  $(datadir)/bibcleanrc and /etc/bibcleanrc instead of looking in
  the executable path for a .bibcleanrc. Note that the filenames
  in $(datadir) or /etc do not contain the initial dot. The
  configuration file can still be overridden by ~/.bibcleanrc
  (this filename does take a dot).


============
UNIX Systems
============

The code can be compiled with either C (K&R or ISO/ANSI Standard C) or
C++ compilers.  With some C++ compilers, it may be necessary to supply
additional switches for force the compiler to stay in C++ mode, rather
than reverting to C mode (e.g. on DEC Alpha OSF/1, you must do 
setenv CC "cxx -x cxx").

On UNIX systems, the only changes that you are likely to need in the
Makefile are the settings of CC and CFLAGS, and possibly, DEFINES, and
if you wish to do "make install", the settings of bindir, MANDIR, and
MANEXT.

If you are installing bibclean on a new system, you should definitely
run "make check" before installing it on your system.  For the target
test-bibtex-2, latex is needed.  For test-bibtex-2 and test-scribe-1,
bibtex is needed.  Sample output of "make check" from a UNIX system
is given below.

The code has been tested under more than 55 different C and C++
compilers, and is in regular use to maintain the TeX User Group
bibliography collection stored on ftp.math.utah.edu:/pub/tex/bib, as
well as several other local bibliographies.  These files total more
than 1.08M lines and 62K bibliography entries.  Some of these
bibliographies are mirrored to the Comprehensive TeX Archive Network
(CTAN) hosts.  Do "finger ctan@pip.shsu.edu" to find a CTAN site on
the Internet near you.

bibclean is also used for the BibNet Project, which collects
bibliographies in numerical analysis.  The master collection is
available on ftp.math.utah.edu:/pub/bibnet, and is mirrored from there
to netlib servers at AT&T and Oak Ridge National Laboratory.

If you port bibclean to a new system, please select maximal error and
warning messages in your compiler, to better uncover problems.  If you
find massive numbers of errors complaining about function and argument
type mismatches, it is likely that this can be remedied by suitable
modifications of config.h.  As C implementations move towards
conformance with the December 1989 ISO/ANSI C Language Standard, the C
language is a moving target that must be tracked by config.h, which is
why that file is normally automatically generated on UNIX systems by
the configure script.  With C compilers, you can safely ignore
complaints about implicit declaration of library functions; they are
caused by deficiencies in the vendor-provided header files.

If you have a C++ compiler, please try that as well.  This code has
been successfully compiled under at least 19 C++ compilers, and the
stricter type checking has uncovered problems that slipped past other
compilers.

These programs have been successfully built with C and C++ compilers
and tested on these systems for the 2.10.1 release:

	DECstation 5000		ULTRIX 4.2	cc, gcc, g++, lcc
	DEC Alpha		OSF/1 3.0, 3.2c	cc, c89, cxx, gcc, g++
	HP 9000/375		BSD 4.3		cc, CC
	HP 9000/735		HP-UX 9.0	cc, c89, CC, gcc, g++
	IBM RS/6000		AIX 3.2		cc, c89, xlC, gcc, g++
	Intel 486		Linux 1.3.15	gcc, g++
	MIPS RC6280		RISCos 2.1.1AC	cc
	NeXT 68040		Mach 3.0	cc, cc -ObjC, gcc, g++
	SGI 4D/210		IRIX 4.0.5c	cc, gcc, lcc
	SGI Indigo/2		IRIX 5.3	cc, CC, gcc, g++, lcc
	SGI Power Challenge	IRIX 6.0.1	cc, CC
	Sun SPARCstation	Solaris 2.3,2.4	cc, CC, gcc, g++, lcc
	Sun SPARCstation	SunOS 4.1.3	acc, cc, CC, gcc

Further details are given below.  Where builds have failed, it is
usually because of conflicts between system header files.

The author uses the build-all.sh script for these tests; it tries
builds with every known compiler on the development systems.  If your
UNIX system has other compilers that can be tested, please send their
full path names to the author.


==========
IBM PC DOS
==========

The ibmpc/dos/README file contains details of the builds and tests
of bibclean under 8 IBM PC DOS C and C++ compilers, and instructions
for building and testing bibclean with other compilers.

Since bibclean uses no floating-point arithmetic, and PC DOS has no
shared libraries, I expect that the executables will run on any
version of DOS greater than 4.0.  They may also run on earlier
versions.  At the time of writing, MS-DOS 6.22 is current, and the
bibclean executables work fine on it.


=================
DEC Alpha OpenVMS
=================

The vms/alpha subdirectory contains these files for DEC Alpha OpenVMS:

	bibclean.exe		bibclean executable program
	config.h		hand-coded configuration file
	recomp.com		do @recomp foo to recompile foo.c
	vmsclean.com		do @vmsclean to cleanup after a build
	vmsmake.com		do @vmsmake to build bibclean
	vmstest.com		do @vmstest to test bibclean

You will have to change one line in vmstest.com to define the disk
location of bibclean.exe in the foreign command symbol for bibclean.

Unlike the UNIX "make check", execution of vmstest.com does not
require that latex or bibtex be installed on your system.  [I didn't
have either on the Alpha OpenVMS system that I built bibclean on.]


===========
DEC VAX VMS
===========

The vms/vax/README file contains details of the building and testing
of bibclean on VAX VMS 6.1

Unlike the UNIX "make check", execution of vmstest.com does not require
that latex or bibtex be installed on your system.  [I didn't have
either on the VAX VMS system that I built bibclean on.]

On versions of VMS before 6.1, you may find differences in the vmstest
output between testbib1.bok (correct Sun) and testbib1.bib (VAX VMS);
characters with octal values 211--215 and 240 disappear from the VAX
VMS output.  The reason is that on VAX VMS 5.4 (and likely other
versions of VAX VMS) isspace() from <ctype.h> classifies those
characters as spaces.  This problem does NOT exist on DEC Alpha
OpenVMS 1.5, or in VMS 6.1.  As long as your .bib files do not use
those six characters, execution should be correct; for portability,
.bib files should restrict themselves to ASCII/ISO-8859 characters in
the range 32--127, plus newline and tab.


===================================
Sample "make check" Output for UNIX
===================================

Here is a log of "make check" on Sun Solaris 2.5 using the native C++
compiler, CC:

	CC -c -I. -I. -DHAVE_CONFIG_H  -g  romtol.c
	/bin/rm -f match.O
	if [ -f match.o ] ; then /bin/mv match.o match.O ; fi
	/bin/rm -f match.o
	CC -I. -I. -DHAVE_CONFIG_H  -g  -DTEST -o match \
		match.c romtol.o
	/bin/rm -f match.o
	if [ -f match.O ] ; then /bin/mv match.O match.o ; fi
	
	===================== begin match test =======================
	
	./match <match.dat >match.lst
	There should be no differences found:
	diff match.lok match.lst
	
	====================== end match test ========================
	
	/bin/rm -f romtol.O
	if [ -f romtol.o ] ; then /bin/mv romtol.o romtol.O ; fi
	/bin/rm -f romtol.o
	CC -I. -I. -DHAVE_CONFIG_H  -g  -DTEST -o romtol romtol.c
	/bin/rm -f romtol.o
	if [ -f romtol.O ] ; then /bin/mv romtol.O romtol.o ; fi
	
	===================== begin romtol test ======================
	
	./romtol <romtol.dat >romtol.lst
	There should be no differences found:
	diff romtol.lok romtol.lst
	
	====================== end romtol test =======================
	
	CC -c -I. -I. -DHAVE_CONFIG_H  -g  bibclean.c
	CC -c -I. -I. -DHAVE_CONFIG_H  -g  chek.c
	CC -c -I. -I. -DHAVE_CONFIG_H  -g  do.c
	CC -c -I. -I. -DHAVE_CONFIG_H  -g  fix.c
	CC -c -I. -I. -DHAVE_CONFIG_H  -g  fndfil.c
	CC -c -I. -I. -DHAVE_CONFIG_H  -g  isbn.c
	CC -c -I. -I. -DHAVE_CONFIG_H  -g  keybrd.c
	CC -c -I. -I. -DHAVE_CONFIG_H  -g  match.c
	CC -I. -I. -g  -c -DHOST=\"`hostname`\" -DUSER=\"beebe\" option.c
	CC -c -I. -I. -DHAVE_CONFIG_H  -g  strist.c
	CC -c -I. -I. -DHAVE_CONFIG_H  -g  strtol.c
	CC -o bibclean -g  bibclean.o chek.o do.o fix.o fndfil.o isbn.o keybrd.o match.o option.o romtol.o strist.o strtol.o 
	ild: (Performing full relink) too many files changed
	
	==================== begin BibTeX test 1 =====================
	
	
	./bibclean -init-file bibclean.ini testbib1.org >testbib1.bib 2>testbib1.err
	
	There should be no differences found:
	diff testbib1.bok testbib1.bib
	
	There should be no differences found:
	diff testbib1.eok testbib1.err
	
	===================== end BibTeX test 1 ======================
	
	
	==================== begin BibTeX test 2 =====================
	
	
	./bibclean -init-file bibclean.ini -no-check-values testbib2.org >testbib2.bib 2>testbib2.err
	
	There should be no differences found:
	diff testbib2.bok testbib2.bib
	
	There should be no differences found:
	diff testbib2.eok testbib2.err
	
	latex testbib2.ltx >/dev/null
	
	Expect 6 BibTeX warnings:
	bibtex testbib2
	Warning--empty year in Bennett
	Warning--empty year in Cejchan
	Warning--there's a number but no volume in Dubowsky:75
	Warning--empty institution in Diver:88a
	Warning--empty booktitle in Diver:88
	Warning--empty year in Diver
	(There were 6 warnings)
	
	latex testbib2.ltx >/dev/null
	
	latex testbib2.ltx
	This is TeX, Version 3.1415 (C version 6.1)
	(testbib2.ltx
	LaTeX Version 2.09 <14 January 1991>
	(/usr/local/lib/tex/latex/article.sty
	Document Style `article' <16 Mar 88>.
	(/usr/local/lib/tex/latex/art10.sty)) (testbib2.aux) (testbib2.bbl [1] [2]
	[3]
	Underfull \hbox (badness 1024) in paragraph at lines 261--264
	[] []\tenrm L. M. Berkovich, V. P. Gerdt, Z. T. Kos-tova, and M. L.
	[4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] [15] [16]) [17] (testbib2.aux)
	 )
	(see the transcript file for additional information)
	Output written on testbib2.dvi (17 pages, 49032 bytes).
	Transcript written on testbib2.log.
	
	===================== end BibTeX test 2 ======================
	
	
	==================== begin BibTeX test 3 =====================
	
	
	./bibclean -init-file bibclean.ini -fix-font-change testbib3.org >testbib3.bib 2>testbib3.err
	
	There should be no differences found:
	
	There should be no differences found:
	diff testbib3.eok testbib3.err
	
	===================== end BibTeX test 3 ======================
	
	
	==================== begin BibTeX test 4 =====================
	
	
	./bibclean -init-file bibclean.ini -fix-font-change testbib4.org >testbib4.bib 2>testbib4.err
	
	There should be no differences found:
	
	There should be no differences found:
	diff testbib4.eok testbib4.err
	
	===================== end BibTeX test 4 ======================
	
	
	==================== begin BibTeX test 5 =====================
	
	
	./bibclean -init-file bibclean.ini -German-style testbib5.org >testbib5.bib 2>testbib5.err
	
	There should be no differences found:
	
	There should be no differences found:
	diff testbib5.eok testbib5.err
	
	===================== end BibTeX test 5 ======================
	
	
	==================== begin BibTeX test 6 =====================
	
	./bibclean -init-file bibclean.ini testisxn.org >testisxn.bib 2>testisxn.err
	
	There should be no differences found:
	diff testisxn.bok testisxn.bib
	
	There should be no differences found:
	diff testisxn.eok testisxn.err
	
	===================== end BibTeX test 6 ======================
	
	
	==================== begin BibTeX test 7 =====================
	
	./bibclean -init-file bibclean.ini testcodn.org >testcodn.bib 2>testcodn.err
	
	There should be no differences found:
	diff testcodn.bok testcodn.bib
	
	There should be no differences found:
	diff testcodn.eok testcodn.err
	
	===================== end BibTeX test 7 ======================
	
	
	==================== begin Scribe test 1 =====================
	
	
	----------------------------------------------------
	
	./bibclean -init-file bibclean.ini -scribe -no-check testscr1.org >testscr1.bib
	
	There should be no differences found:
	diff testscr1.bok testscr1.bib
	
	There should be no differences found:
	diff testscr1.eok testscr1.err
	
	Expect 5 BibTeX warnings
	bibtex testscr1
	Warning--empty publisher in hanson-67
	Warning--can't use both volume and number fields in kendeigh-52
	Warning--empty author in singer-portion-chapter
	Warning--empty author in singer-portion-volume
	Warning--can't use both author and editor fields in wright-63
	(There were 5 warnings)
	
	----------------------------------------------------
	
	./bibclean -init-file bibclean.ini -scribe -no-check testscr2.org >testscr2.bib
	
	There should be no differences found:
	diff testscr2.bok testscr2.bib
	
	There should be no differences found:
	diff testscr2.eok testscr2.err
	
	There should be no BibTeX warnings:
	bibtex testscr2
	===================== end Scribe test 1 ======================
	
	
	==================== begin Scribe test 2 =====================
	
	./bibclean -init-file bibclean.ini -scribe -file -no-check testscr2.org \
	>testscr2.bib 2>testscr2.err
	
	There should be no differences found:
	diff testscr2.bok testscr2.bib
	
	There should be no differences found:
	diff testscr2.eok testscr2.err
	
	
	./bibclean -init-file bibclean.ini -scribe -file -no-check -no-par testscr2.org \
	>testscr2.bi2 2>testscr2.er2
	make: [test-scribe-2] Error 1 (ignored)
	
	There should be no differences found:
	diff testscr2.bo2 testscr2.bi2
	
	There should be no differences found:
	diff testscr2.eo2 testscr2.er2
	
	===================== end Scribe test 2 ======================
	
	
	==================== begin Scribe test 3 =====================
	
	./bibclean -init-file bibclean.ini -scribe -no-check testscr3.org >testscr3.bib 2>testscr3.err
	
	There should be no differences found:
	diff testscr3.bok testscr3.bib
	
	There should be no differences found:
	diff testscr3.eok testscr3.err
	
	===================== end Scribe test 3 ======================
	


=====================================
Details of UNIX installation attempts
=====================================

Clean builds and validations with "setenv CC xxx && ./configure &&
make && make check" have been achieved on these systems:

	DEC Alpha OSF/1 3.0
		/bin/cc
		/usr/ccs/bin/c89
		/usr/ccs/bin/cc
		/usr/local/bin/g++
		/usr/local/bin/gcc
		/usr/ucb/cc

		For /bin/cxx, compiler switches to c89 for .c files, and
		then gets an error which arises because
		/usr/include/sys/signal.h:468: error: Missing ")".
		stack_t is not defined by types.h except in Standard C
		or C++ mode.

		Recent versions of cxx have switch "-x cxx" to force
		use of C++ compilation for .c files, but older ones do
		not.  On one such old system, I made an experiment
		with changing extensions from .c to .cxx and updating
		the Makefile accordingly.  The build failed with:
		``Fatal: An attempt to allocate memory failed.''
		during compilation of bibclean.cxx, and with
		conflicting declarations of swab() from
		/usr/include/unistd.h and /usr/include/cxx/string.h
		during compilation of fndfil.cxx.  These are both
		vendor problems that may be fixed in newer releases of
		the C++ compiler.

	DEC Alpha OSF/1 3.2C (Digital UNIX)
		/usr/ucb/cxx

		The problems with cxx experienced on OSF/1 3.0 have
		all disappeared, and I regularly use "cxx -x cxx" as
		my C/C++ compiler of choice on this system.  [The
		DEC 2100-5/250 on which the compiler is installed has
		3 CPUs and 2GB of RAM, and each CPU does 250Mflops in
		benchmarks, so it is a terrific development system!]

	DECstation ULTRIX 4.3
		/bin/cc
		/usr/local/bin/g++
		/usr/local/bin/gcc

		Got many "warning: missing prototype" messages for
		functions in system header files (because they are
		still K&R style) with:
		/usr/local/bin/lcc -A -A
		but build completed and validated.

	HP 9000/735 HP-UX 9.0.3
		/bin/cc
		/bin/c89
		/usr/bin/CC
		/usr/local/bin/g++
		/usr/local/bin/gcc

		For /bin/cc, the compiler warns

		cc: "bibclean.c", line 3723: warning 30: Character
		constant contains undefined escape sequence.
		cc: "bibclean.c", line 3730: warning 30: Character
		constant contains undefined escape sequence.

		but the escape sequence ('\a') IS correctly translated.

	HP 9000/735 HP-UX 10.0.1
		/bin/cc
		/bin/c89
		/usr/bin/CC
		/usr/local/bin/g++
		/usr/local/bin/gcc

		The warnings from /bin/cc no longer appear.

	IBM RS/6000 AIX 3.2.5
		/bin/cc
		/bin/xlC
		/usr/bin/c89
		/usr/local/bin/g++
		/usr/local/bin/gcc

	IBM RS/6000 AIX 4.1
		/bin/c89
		/bin/xlC
		/usr/bin/c89

	Intel 486 Linux 1.3.15 and 1.3.97 (POSIX)
		/usr/bin/g++
		/usr/bin/gcc

	MIPS RC 6280 RISCos 2.1.1AC
		/bin/cc

	NeXT Turbostation Mach 3.0
		Compilation with any compiler produces failing links
		with error: /bin/ld: multiple definitions of symbol _strtol
		The configure.in script attempts to deal with this by
		AC_REPLACE_FUNCS(strtol), but that results in the created
		Makefile having LIBOBJS=strtol.  Building with
			make LIBOBJS=
		provides a temporary workaround.

		/usr/local/bin/gcc
		/bin/cc
		/usr/local/bin/g++

		Many compilation "warning: missing prototype", plus
		bibclean.c:2774: undeclared identifier `__ctype'
		bibclean.c:3158: type error: pointer expected
		...
		for
		/usr/local/bin/lcc -A -A
		lcc on this system is an old version (1.9); the
		current lcc elsewhere is 3.4b, but unfortunately,
		lcc 3.x dropped support for the Motorola 68xxx
		code generator.  I'm therefore writing off lcc
		on the NeXT as not viable for software development.
		
	NeXT Turbostation Mach 3.1
		/bin/cc
		/usr/local/bin/g++
		/usr/local/bin/gcc
		
	Silicon Graphics Indigo IRIX 4.0.5F

		/usr/bin/cc
		/usr/local/bin/gcc
		/usr/local/bin/lcc -A -A

		Compilation fails with
		/usr/local/bin/g++
		because of conflicts between system header files and
		g++ built-in library function declarations.

	Silicon Graphics Indigo-2 IRIX 5.3
		/bin/cc
		/usr/local/bin/g++
		/usr/local/bin/gcc
		/usr/local/bin/lcc -A -A

	Silicon Graphics Power Challenge IRIX 6.0.1
		/bin/CC
		/bin/cc

		For
		/usr/local/bin/g++
		and
		/usr/local/bin/gcc
		(2.7.0) get assembler errors from generated code.

	Sun SPARC 4/380 Sun SunOS 4.1.3
		/bin/cc
		/usr/lang/acc
		/usr/lang/CC
		/usr/local/bin/gcc
		/usr/ucb/cc

		Linking fails with
		/usr/local/bin/g++
		because of multiply defined symbols.  These arise
		because g++ generates inline C-style interfaces
		to library functions like strchr(), but on this
		system, the library also contains C-style functions
		with the same name, so linking produces multiple
		definitions, and failure.  Curiously, g++ 2.7.0 on
		other systems, including Sun Solaris 2.x, does not
		generate these interface functions, and so does not
		cause problems there.

		Compilation fails with
		/usr/local/bin/lcc -A -A
		because of a conflict in the definition of size_t
		between /usr/include/sys/stdtypes.h and
		/usr/local/include/lcc-3.4b/sparc-sun/stdlib.h.

	Sun SPARC 20 Sun Solaris 2.3
		/opt/SUNWspro/bin/cc
		/opt/SUNWspro/bin/CC
		/usr/local/bin/gcc
		/usr/ucb/cc

		Linking failed for
		/usr/local/bin/g++
		with MANY multiply-defined symbols (e.g. memchr in bibclean
		and fndfil)

		No problem on Solaris 2.4 with g++!

		The reason that configure says
			checking for strcspn... (cached) no
			checking for strdup... (cached) no
			checking for strspn... (cached) no
			checking for strstr... (cached) no
			checking for strtod... (cached) no
			checking for strtol... (cached) no
		is that it generates a test program with
			char $ac_func();
		as the prototype.  With C++, that is a separate
		function that cannot be found in the library.  That is
		also why LIBOBJS is being set incorrectly.

		*** Need to check out g++ and lcc on this system ***
		Build failed for
		/usr/local/bin/lcc -A -A
		with message
		configure: error: can not run test program while cross compiling
		This happens because configure uses -g, which blows
		compilation because of unknown opcode ".stabd" errors
		in assembler.

		Can be fixed by manually changing configure line
			test "${CFLAGS+set}" = set || CFLAGS="-g"
		to
			test "${CFLAGS+set}" = set || CFLAGS=""

		There is another problem: STDC_HEADERS is not defined,
		because a test program created by configure detects an
		error in toupper().  This was traced to a bug in lcc's
		ctype.h, and has been reported to the lcc-bugs list.
		A manual patch to config.h solves the problem.

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