# This should be called "ndiff", but unfortunately ndiff(1) is in the
# namp package, so rename this one to "n-diff"

%global ndiff ndiff
%global ucndiff NDIFF
%global ucname N-DIFF

Name:		n-diff
Version:	2.00
Release:	2%{?dist}
Summary:	Compare two putatively similar files, ignoring small numeric differences
Group:		Applications/Text
License:	GPLv2+ and HSRL
URL:		http://www.math.utah.edu/~beebe/software/%ndiff/index.html
Source0:	ftp://ftp.math.utah.edu/pub/misc/%ndiff-%version.tar.gz
BuildRequires:	gmp-devel gcc
# Spencer regexp (in licence list, but not packaged?)
Provides:	bundled(regexp)

%description
When a numerical program is run in multiple environments (operating
systems, architectures, or compilers), assessing its consistency can
be a difficult task for a human, since small differences in numerical
output values are expected.

Application of a file differencing utility, such as POSIX/UNIX
diff(1), will generally produce voluminous output, often longer than
the original files, and is thus not useful.  The lesser-known UNIX
spiff(1) utility, while capable of handling numeric fields, suffers
from excessively-long running times, and often terminates prematurely.

%name provides a solution to this problem.  It compares two files that
are expected to be identical, or at least, numerically similar.  It
assumes that lines consist of whitespace-separated fields of numeric
and non-numeric data.


%prep
%setup -q -n %ndiff-%version
mv regexp/README regexp/README.regexp
# configure eliminates -g and -O2...
sed -i '/^CFLAGS="/d' configure


%build
# configure.in needs re-doing, but this works
%configure --with-gmp
%make_build


%install
install -D %ndiff $RPM_BUILD_ROOT%_bindir/%name
install -m 644 -D %ndiff.man $RPM_BUILD_ROOT%_mandir/man1/%name.1
sed -i -e 's/%ucndiff/%ucname/g' -e 's/%ndiff /%name /g' -e 's/%ndiff$/%name/g' $RPM_BUILD_ROOT%_mandir/man1/%name.1


%check
make check


%files
%doc ChangeLog regexp/README.regexp
%license COPYING
%_bindir/*
%_mandir/*/*


%changelog
* Thu Dec 23 2021 Dave Love <loveshack@fedoraproject.org> - 2.00-2
- Modernize spec
- Avoid configure removing -g -O2

* Wed Nov 27 2013 Dave Love <d.love@liverpool.ac.uk> - 2.00-1
- Initial packaging