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Name: libflif
Version: 0.3
Release: alt3

Summary: Free Lossless Image Format
License: LGPLv3+ and Apache-2.0
Group: Development/C

Url: http://flif.info/
# Source-url: https://github.com/FLIF-hub/FLIF/archive/v%version.tar.gz
Source: %name-%version.tar
Packager: Vitaly Lipatov <lav at altlinux.ru>

BuildRequires: gcc-c++
BuildRequires: libpng-devel

%description
FLIF is a lossless image format based on MANIAC compression.
MANIAC (Meta-Adaptive Near-zero Integer Arithmetic Coding)
is a variant of CABAC (context-adaptive binary arithmetic coding),
where the contexts are nodes of decision trees
which are dynamically learned at encode time.

FLIF outperforms PNG, FFV1, lossless WebP,
lossless BPG and lossless JPEG2000 in terms of compression ratio.

Moreover, FLIF supports a form of progressive interlacing
(essentially a generalization/improvement of PNG's Adam7)
which means that any prefix (e.g. partial download)
of a compressed file can be used as a reasonable
lossy encoding of the entire image.

%package -n flif
Summary: CLI to the FLIF compression
License: LGPLv3+ and Apache-2.0
Group: File tools

%description -n flif
FLIF is a lossless image format based on MANIAC compression.
MANIAC (Meta-Adaptive Near-zero Integer Arithmetic Coding)
is a variant of CABAC (context-adaptive binary arithmetic coding),
where the contexts are nodes of decision trees
which are dynamically learned at encode time.

%package -n libflifdec
Summary: Library implementing the FLIF decompressor
License: Apache-2.0
Group: System/Libraries

%description -n libflifdec
FLIF is a lossless image format based on MANIAC compression.
MANIAC (Meta-Adaptive Near-zero Integer Arithmetic Coding)
is a variant of CABAC (context-adaptive binary arithmetic coding),
where the contexts are nodes of decision trees
which are dynamically learned at encode time.

%package devel
Summary: Development files for %name
License: LGPLv3+ and Apache-2.0
Group: Development/C++
Requires: %name = %version-%release

%description devel
Development files for the %name library.

%prep
%setup
sed -i "s|/usr/local|%_prefix|g" src/Makefile
sed -i "s|/lib\([/ ]\)|/%_lib\1|g" src/Makefile
sed -i "s|/lib$|/%_lib|g" src/Makefile
%ifarch %e2k
# lcc 1.23 does that differently
sed -i "s|-fwhole-program||" src/Makefile
%endif

%build
cd src
%make_build
%make_build decoder

%install
cd src
%makeinstall_std install-decoder install-dev
rm -f %buildroot%_libdir/libflif.so %buildroot%_libdir/libflif_dec.so
ln -s libflif.so.0 %buildroot%_libdir/libflif.so
ln -s libflif_dec.so.0 %buildroot%_libdir/libflif_dec.so

%check
#LD_LIBRARY_PATH=$(pwd)
cd src
#make test

%files -n flif
%_bindir/flif
%_bindir/dflif
%_bindir/apng2flif
%_bindir/gif2flif
%_man1dir/flif*

%files
%_libdir/libflif.so.0

%files devel
%_includedir/*
%_libdir/libflif.so
%_libdir/libflif_dec.so

%files -n libflifdec
%_libdir/libflif_dec.so.0

%changelog
…
Полный changelog можно просмотреть здесь