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# BEGIN SourceDeps(oneline):
BuildRequires: gcc-c++
# END SourceDeps(oneline)
BuildRequires: libblas-devel
%add_optflags %optflags_shared
%define oldname levmar
# see https://bugzilla.altlinux.org/show_bug.cgi?id=10382
%define _localstatedir %{_var}
# SOlib major and minor version
%global major 2
%global minor 2

Name: liblevmar
Version: 2.5
Release: alt1_14
Summary: Levenberg-Marquardt nonlinear least squares algorithm
URL: http://www.ics.forth.gr/~lourakis/levmar/

Source0: http://www.ics.forth.gr/~lourakis/levmar/levmar-%{version}.tgz

# Patch to fix compilation of the shared library and compile the demo program
# Sent to levmar author on 28-Jan-2010
Patch0: levmar-shared.patch

License: GPLv2+
Group: System/Libraries

BuildRequires: dos2unix
BuildRequires: liblapack-devel
Provides: levmar = %{version}-%{release}

%description
levmar is a native ANSI C implementation of the Levenberg-Marquardt
optimization algorithm.  Both unconstrained and constrained (under linear
equations, inequality and box constraints) Levenberg-Marquardt variants are
included.  The LM algorithm is an iterative technique that finds a local
minimum of a function that is expressed as the sum of squares of nonlinear
functions.  It has become a standard technique for nonlinear least-squares
problems and can be thought of as a combination of steepest descent and the
Gauss-Newton method.  When the current solution is far from the correct on,
the algorithm behaves like a steepest descent method: slow, but guaranteed
to converge.  When the current solution is close to the correct solution, it
becomes a Gauss-Newton method.

%package devel
Summary: Development files for levmar library, and demo program
Group: Development/Other
Requires: liblevmar = %{version}-%{release}
Provides: levmar-devel = %{version}-%{release}

%description devel
Development files for the levmar library, and demo program.

%prep
%setup -n %{oldname}-%{version} -q
%patch -P 0 -p1 -b .shared
dos2unix -k README.txt

%build
mkdir sobj
make CFLAGS="%{optflags} -funroll-loops -fPIC" %{?_smp_mflags} -f Makefile.so

%install
install -D -p -m 755 sobj/liblevmar.so.%{major}.%{minor} %{buildroot}%{_libdir}/liblevmar.so.%{major}.%{minor}
install -D -p -m 644 levmar.h %{buildroot}%{_includedir}/levmar.h
install -D -p -m 755 lmdemo %{buildroot}%{_bindir}/lmdemo
ln -s liblevmar.so.%{major}.%{minor} %{buildroot}%{_libdir}/liblevmar.so.%{major}
ln -s liblevmar.so.%{major}.%{minor} %{buildroot}%{_libdir}/liblevmar.so

%files
%doc README.txt LICENSE
%{_libdir}/liblevmar.so.%{major}.%{minor}
%{_libdir}/liblevmar.so.%{major}

%files devel
%{_includedir}/levmar.h
%{_libdir}/liblevmar.so
%{_bindir}/lmdemo

%changelog
…
Full changelog you can see here