Allow building without nbd, rbd or rados

Building with `--without=nbd` (or similar for rbd, rados)
will disable the nbd, rbd or rados engines respectively.

fio.spec

@@ -1,6 +1,6 @@
 Name:		fio
 Version:	3.32
-Release:	1%{?dist}
+Release:	2%{?dist}
 Summary:	Multithreaded IO generation tool
 
 License:	GPLv2
@@ -9,13 +9,18 @@ Source0:	http://brick.kernel.dk/snaps/%{name}-%{version}.tar.bz2
 Source1:	https://brick.kernel.dk/snaps/%{name}-%{version}.tar.bz2.asc
 Source2:	https://git.kernel.org/pub/scm/docs/kernel/pgpkeys.git/plain/keys/F7D358FB2971E0A6.asc
 
+%bcond nbd 1
+%bcond rbd 1
+%bcond rados 1
 
 BuildRequires:	gcc
 BuildRequires:	gnupg2
 BuildRequires:	libaio-devel
 BuildRequires:	zlib-devel
 BuildRequires:	python3-devel
+%if %{with nbd}
 BuildRequires:	libnbd-devel
+%endif
 BuildRequires:	libcurl-devel
 BuildRequires:	openssl-devel
 %ifarch x86_64 ppc64le
@@ -24,8 +29,10 @@ BuildRequires:	libpmemblk-devel
 %endif
 
 %ifnarch %{arm} %{ix86} ppc64le
+%if %{with rbd}
 BuildRequires:	librbd1-devel
 %endif
+%endif
 
 %ifnarch %{arm}
 BuildRequires:	numactl-devel
@@ -42,16 +49,22 @@ BuildRequires: make
 # or if the dependencies are too onerous.
 Recommends:     %{name}-engine-libaio
 Recommends:     %{name}-engine-http
+%if %{with nbd}
 Recommends:     %{name}-engine-nbd
+%endif
 %ifarch x86-64 ppc64le
 Recommends:     %{name}-engine-dev-dax
 Recommends:     %{name}-engine-pmemblk
 Recommends:     %{name}-engine-libpmem
 %endif
 %ifnarch %{arm} %{ix86} ppc64le
+%if %{with rados}
 Recommends:     %{name}-engine-rados
+%endif
+%if %{with rbd}
 Recommends:     %{name}-engine-rbd
 %endif
+%endif
 %ifnarch %{arm}
 Recommends:     %{name}-engine-rdma
 %endif
@@ -78,12 +91,14 @@ Requires:       %{name}%{?_isa} = %{version}-%{release}
 %description engine-http
 HTTP engine for %{name}.
 
+%if %{with nbd}
 %package engine-nbd
 Summary:        Network Block Device engine for %{name}.
 Requires:       %{name}%{?_isa} = %{version}-%{release}
 
 %description engine-nbd
 Network Block Device (NBD) engine for %{name}.
+%endif
 
 %ifarch x86_64 ppc64le
 %package engine-dev-dax
@@ -119,13 +134,16 @@ on a persistent memory device through the PMDK libpmem library.
 %endif
 
 %ifnarch %{arm} %{ix86} ppc64le
+%if %{with rados}
 %package engine-rados
 Summary:        Rados engine for %{name}.
 Requires:       %{name}%{?_isa} = %{version}-%{release}
 
 %description engine-rados
 Rados engine for %{name}.
+%endif
 
+%if %{with rbd}
 %package engine-rbd
 Summary:        Rados Block Device engine for %{name}.
 Requires:       %{name}%{?_isa} = %{version}-%{release}
@@ -133,6 +151,7 @@ Requires:       %{name}%{?_isa} = %{version}-%{release}
 %description engine-rbd
 Rados Block Device (RBD) engine for %{name}.
 %endif
+%endif
 
 %ifnarch %{arm}
 %package engine-rdma
@@ -158,7 +177,11 @@ pathfix.py -i %{__python3} -pn \
 sed -e 's,/usr/local/lib/,%{_libdir}/,g' -i os/os-linux.h
 
 %build
+%if %{with nbd}
 ./configure --disable-optimizations --enable-libnbd --dynamic-libengines
+%else
+./configure --disable-optimizations --dynamic-libengines
+%endif
 EXTFLAGS="$RPM_OPT_FLAGS" LDFLAGS="$RPM_LD_FLAGS" make V=1 %{?_smp_mflags}
 
 %install
@@ -190,8 +213,10 @@ make install prefix=%{_prefix} mandir=%{_mandir} libdir=%{_libdir}/fio DESTDIR=$
 %{_libdir}/fio/fio-libpmem.so
 %endif
 
+%if %{with nbd}
 %files engine-nbd
 %{_libdir}/fio/fio-nbd.so
+%endif
 
 %ifarch x86_64 ppc64le
 %files engine-pmemblk
@@ -199,12 +224,16 @@ make install prefix=%{_prefix} mandir=%{_mandir} libdir=%{_libdir}/fio DESTDIR=$
 %endif
 
 %ifnarch %{arm} %{ix86} ppc64le
+%if %{with rados}
 %files engine-rados
 %{_libdir}/fio/fio-rados.so
+%endif
 
+%if %{with rbd}
 %files engine-rbd
 %{_libdir}/fio/fio-rbd.so
 %endif
+%endif
 
 %ifnarch %{arm}
 %files engine-rdma
@@ -212,6 +241,9 @@ make install prefix=%{_prefix} mandir=%{_mandir} libdir=%{_libdir}/fio DESTDIR=$
 %endif
 
 %changelog
+* Wed Sep 07 2022 Amit Shah <amitshah@fedoraproject.org> - 3.32-2
+- Allow building without nbd, rbd, rados support
+
 * Wed Sep 07 2022 Davide Cavalca <dcavalca@fedoraproject.org> - 3.32-1
 - New upstream version (RHBZ#2033897)