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diff --git a/libspng.spec b/libspng.spec
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+#
+# Conditional build:
+%bcond_with    miniz           # miniz instead of zlib
+%bcond_without static_libs     # static library
+%bcond_with    sse             # SSE instructions
+%bcond_with    sse2            # SSE2 instructions
+%bcond_with    ssse3           # SSSE3 instructions
+%bcond_with    sse41           # SSE4.1 instructions
+#
+%ifarch pentium3 pentium4 %{x8664} x32
+%define        with_sse        1
+%endif
+%ifarch pentium4 %{x8664} x32
+%define        with_sse2       1
+%endif
+%if %{without sse} || %{without sse2} || %{without ssse3}
+%undefine      with_sse41
+%endif
+%if %{without sse} || %{without sse2}
+%undefine      with_ssse3
+%endif
+%if %{without sse}
+%undefine      with_sse2
+%endif
+Summary:       PNG decoding and encoding library
+Summary(pl.UTF-8):     Biblioteka do dekodowania i kodowania PNG
+Name:          libspng
+Version:       0.6.1
+Release:       1
+License:       BSD
+Group:         Libraries
+#Source0Download: https://github.com/randy408/libspng/releases
+Source0:       https://github.com/randy408/libspng/archive/v%{version}/%{name}-%{version}.tar.gz
+# Source0-md5: 1300ee3c8f78032e0eff9c65607d2a52
+#Patch0:       %{name}-what.patch
+URL:           https://github.com/randy408/libspng
+BuildRequires: meson
+%{?with_miniz:BuildRequires:   miniz-devel}
+BuildRequires: ninja >= 1.5
+BuildRequires: rpmbuild(macros) >= 1.736
+%{!?with_miniz:BuildRequires:  zlib-devel}
+BuildRoot:     %{tmpdir}/%{name}-%{version}-root-%(id -u -n)
+
+%description
+libspng is a C library for reading and writing Portable Network
+Graphics (PNG) format files with a focus on security and ease of use.
+
+libspng is an alternative to libpng, the projects are separate and the
+APIs are not compatible.
+
+%description -l pl.UTF-8
+libspng to biblioteka C do odczytu i zapisu plików w formacie PNG
+(Portable Network Graphics), skupiająca się na bezpieczeństwie i
+łatwości użycia.
+
+libspng to alternatywa dla libpng - projekty są osobne, a API nie są
+kompatybilne.
+
+%package devel
+Summary:       Header files for libspng library
+Summary(pl.UTF-8):     Pliki nagłówkowe biblioteki libspng
+Group:         Development/Libraries
+Requires:      %{name} = %{version}-%{release}
+%{?with_miniz:Requires:        miniz-devel}
+%{!?with_miniz:Requires:       zlib-devel}
+
+%description devel
+Header files for libspng library.
+
+%description devel -l pl.UTF-8
+Pliki nagłówkowe biblioteki libspng.
+
+%package static
+Summary:       Static libspng library
+Summary(pl.UTF-8):     Statyczna biblioteka libspng
+Group:         Development/Libraries
+Requires:      %{name}-devel = %{version}-%{release}
+
+%description static
+Static libspng library.
+
+%description static -l pl.UTF-8
+Statyczna biblioteka libspng.
+
+%prep
+%setup -q
+
+%build
+%if %{with sse2}
+CPPFLAGS="%{rpmcppflags} -DSPNG_SSE=%{?with_sse41:4}%{!?with_sse41:%{?with_ssse3:3}%{!?with_ssse3:2}}"
+%endif
+%meson build \
+%if %{without sse}
+       -Denable_opt=false \
+%endif
+       %{?with_miniz:-Duse_miniz=true}
+
+%ninja_build -C build
+
+%install
+rm -rf $RPM_BUILD_ROOT
+
+%ninja_install -C build
+
+install -d $RPM_BUILD_ROOT%{_examplesdir}/%{name}-%{version}
+cp -p examples/* $RPM_BUILD_ROOT%{_examplesdir}/%{name}-%{version}
+
+%clean
+rm -rf $RPM_BUILD_ROOT
+
+%post  -p /sbin/ldconfig
+%postun        -p /sbin/ldconfig
+
+%files
+%defattr(644,root,root,755)
+%doc LICENSE README.md
+%attr(755,root,root) %{_libdir}/libspng.so.*.*.*
+%attr(755,root,root) %ghost %{_libdir}/libspng.so.0
+
+%files devel
+%defattr(644,root,root,755)
+%doc docs/*.md
+%attr(755,root,root) %{_libdir}/libspng.so
+%{_includedir}/spng.h
+%{_pkgconfigdir}/spng.pc
+%{_examplesdir}/%{name}-%{version}
+
+%if %{with static_libs}
+%files static
+%defattr(644,root,root,755)
+%{_libdir}/libspng.a
+%endif