%define	lib_major	1
%define	lib_name	%mklibname %{name}%{lib_major}
%define	devel_name	%mklibname %{name} -d
%define	static_name	%mklibname %{name} -d -s

%define libminizip	%mklibname minizip %{lib_major}
%define minizip_devel	%mklibname minizip -d

%bcond_with minizip
%bcond_without dietlibc

Summary:	The zlib compression and decompression library
Name:		zlib
Version:	1.3.1
Release:	%mkrel 3
Group:		System/Libraries
License:	BSD
URL:		https://www.zlib.net/
Source0:	https://www.zlib.net/%{name}-%{version}.tar.gz

BuildRequires:	util-linux
%if %{with dietlibc}
BuildRequires:	dietlibc-devel
%endif
%if %{with minizip}
BuildRequires:	pkgconfig(zlib)
%endif

%description
The zlib compression library provides in-memory compression and
decompression functions, including integrity checks of the uncompressed
data.  This version of the library supports only one compression method
(deflation), but other algorithms may be added later, which will have
the same stream interface.  The zlib library is used by many different
system programs.

%package -n	%{lib_name}
Summary:	The zlib compression and decompression library
Group:		System/Libraries
Requires(pre):	filesystem >= 2.1.9-18
Provides:	libz = %{version}-%{release}
Provides:	libz1 = %{version}-%{release}
Provides:	%{name} = %{version}-%{release}

%description -n	%{lib_name}
The zlib compression library provides in-memory compression and
decompression functions, including integrity checks of the uncompressed
data.  This version of the library supports only one compression method
(deflation), but other algorithms may be added later, which will have
the same stream interface.  The zlib library is used by many different
system programs.

%package -n	%{devel_name}
Summary:	Header files and libraries for developing apps which will use zlib
Group:		Development/C
Requires:	%{lib_name} = %{version}-%{release}
Provides:	libz-devel = %{version}-%{release}
Provides:	lib%{name}-devel = %{version}-%{release}
Provides:	%{name}-devel = %{version}-%{release}

%description -n	%{devel_name}
The zlib-devel package contains the header files and libraries needed
to develop programs that use the zlib compression and decompression
library.

Install the zlib-devel package if you want to develop applications that
will use the zlib library.

%package -n	%{static_name}
Summary:	Static libraries for developing apps which will use zlib
Group:		Development/C
Requires:	%{devel_name} = %{version}-%{release}
Provides:	%{name}-static-devel = %{version}-%{release}

%description -n	%{static_name}
The zlib-static-devel package contains the static libraries needed
to develop programs that use the zlib compression and decompression
library.

Install the zlib-static-devel package if you want to develop applications that
will use the zlib library statically.

%if %{with minizip}
%package -n	%{libminizip}
Summary:	Minizip manipulates files from a .zip archive
Group:		System/Libraries

%description -n	%{libminizip}
Minizip manipulates files from a .zip archive.

%package -n	%{minizip_devel}
Summary:	Development files for the minizip library
Group:		Development/C
Requires:	%{libminizip} = %{version}-%{release}
Requires:	zlib-devel = %{version}-%{release}
Provides:	libminizip-devel = %{version}-%{release}
Provides:	minizip-devel = %{version}-%{release}

%description -n	%{minizip_devel}
This package contains the libraries and header files needed for
developing applications which use minizip.
%endif

%prep
%setup -q
%autopatch -p1

%build
#(peroyvind): be sure to remove -m64/-m32 flags as they're not overridable
RPM_OPT_FLAGS="`echo $RPM_OPT_FLAGS| sed -e 's/-m.. //g'` -O3"
mkdir objs
cp -a $(ls | grep -v objs) objs/
pushd objs
  CFLAGS="$RPM_OPT_FLAGS" LDFLAGS="%{?ldflags}" \
  ./configure --shared --prefix=%{_prefix} --libdir=%{_libdir}
  %make_build
  make test
popd

%if %{with minizip}
pushd contrib/minizip
autoreconf --install
%configure --enable-static=no
%make_build
popd
%endif


%if %{with dietlibc}
mkdir objsdietlibc
cp -a $(ls | grep -v objs) objsdietlibc/
pushd objsdietlibc
  CFLAGS="-Os" CC="diet gcc" \
  ./configure --prefix=%{_prefix}
  %make_build libz.a
popd
%endif


%install
install -d %{buildroot}%{_prefix}
install -d %{buildroot}%{_libdir}

make install -C objs prefix=%{buildroot}%{_prefix} libdir=%{buildroot}%{_libdir}

%if %{with minizip}
pushd contrib/minizip
%make_install
popd
%endif

%if %{with dietlibc}
install -m644 objsdietlibc/libz.a -D %{buildroot}%{_prefix}/lib/dietlibc/lib-%{_arch}/libz.a
%endif

%if %{with minizip}
rm -fr %{buildroot}%{_libdir}/libminizip.la
# https://bugzilla.redhat.com/show_bug.cgi?id=1424609
# https://github.com/madler/zlib/pull/229
rm -fr %{buildroot}%{_includedir}/minizip/crypt.h
%endif

%files -n %{lib_name}
%doc README
%{_libdir}/libz.so.%{lib_major}{,.*}

%files -n %{devel_name}
%doc README ChangeLog doc/algorithm.txt
%{_mandir}/man3/zlib.3*
%{_libdir}/libz.so
%{_libdir}/pkgconfig/zlib.pc
%{_includedir}/zconf.h
%{_includedir}/zlib.h

%files -n %{static_name}
%{_libdir}/libz.a
%if %{with dietlibc}
%{_prefix}/lib/dietlibc/lib-%{_arch}/libz.a
%endif

%if %{with minizip}
%files -n %{libminizip}
%{_libdir}/libminizip.so.%{lib_major}{,.*}

%files -n %{minizip_devel}
%{_libdir}/pkgconfig/minizip.pc
%{_libdir}/libminizip.so
%{_includedir}/minizip/
%endif