How to build two flavors of the same package?

[Till Hofmann]

Hi all,

Someone (rightfully) suggested that we should build glfw twice, once 
with wayland support and once without:
https://bugzilla.redhat.com/show_bug.cgi?id=2152319

Is there any best practice how to build the same package in two 
different flavors, in this case cmake-based? I vaguely remember seeing a 
spec file that did that, but I don't remember where.

Thanks for any pointers!

Kind regards,
Till

[Jerry James]

On Tue, Jan 17, 2023 at 2:28 PM Till Hofmann <thofmann(a)fedoraproject.org&gt; wrote:
>  Hi all,
>
>  Someone (rightfully) suggested that we should build glfw twice, once
>  with wayland support and once without:
>  https://bugzilla.redhat.com/show_bug.cgi?id=2152319
>
>  Is there any best practice how to build the same package in two
>  different flavors, in this case cmake-based? I vaguely remember seeing a
>  spec file that did that, but I don't remember where.
>
>  Thanks for any pointers!
>
>  Kind regards,
>  Till 
I don't know about best practices, but it seems like you could do
something like this:

%build
%cmake <first set of options>
%cmake_build
mv %{_vpath_builddir} build-first

%cmake <second set of options>
%cmake_build
mv %{_vpath_builddir} build-second

%install
mv build-first %{_vpath_builddir}
%cmake_install
mv %{_vpath_builddir} build-first

mv build-second %{_vpath_builddir}
%cmake_install
mv %{_vpath_builddir} build-second

%check
mv build-first %{_vpath_builddir}
%ctest
mv %{_vpath_builddir} build-first

mv build-second %{_vpath_builddir}
%ctest
mv %{_vpath_builddir} build-second


I made that up off the top of my head and haven't tried it, so it may
have some fatal flaw.  Take with a large grain of salt.
-- 
Jerry James
http://www.jamezone.org/

[Orion Poplawski]

On 1/17/23 14:28, Till Hofmann wrote:
>  Hi all,
>  
>  Someone (rightfully) suggested that we should build glfw twice, once 
>  with wayland support and once without:
>  https://bugzilla.redhat.com/show_bug.cgi?id=2152319
>  
>  Is there any best practice how to build the same package in two 
>  different flavors, in this case cmake-based? I vaguely remember seeing a 
>  spec file that did that, but I don't remember where.
>  
>  Thanks for any pointers! 
In vtk.spec I do things like:

%global _vpath_builddir build
%cmake %{cmake_gen} \
  %{vtk_cmake_options} \
  -DVTK_BUILD_DOCUMENTATION:BOOL=ON \
  -DVTK_BUILD_EXAMPLES:BOOL=ON \
  -DVTK_BUILD_TESTING:BOOL=ON
%cmake_build -- --output-sync
%cmake_build --target DoxygenDoc

%if %{with mpich}
%global _vpath_builddir build-mpich
%_mpich_load
export CC=mpicc
export CXX=mpic++
%cmake %{cmake_gen} \
  %{vtk_cmake_options} \
  -DCMAKE_PREFIX_PATH:PATH=$MPI_HOME \
  -DCMAKE_INSTALL_PREFIX:PATH=$MPI_HOME \
  -DCMAKE_INSTALL_LIBDIR:PATH=lib \
  -DCMAKE_INSTALL_JNILIBDIR:PATH=lib/%{name} \
  -DCMAKE_INSTALL_QMLDIR:PATH=lib/qt5/qml \
  -DVTK_USE_MPI:BOOL=ON
%cmake_build -- --output-sync
%_mpich_unload
%endif

-- 
Orion Poplawski
he/him/his  - surely the least important thing about me
IT Systems Manager                         720-772-5637
NWRA, Boulder/CoRA Office             FAX: [phone]
3380 Mitchell Lane                       orion(a)nwra.com
Boulder, CO 80301                 https://www.nwra.com/

[Iñaki Ucar]

On Tue, 17 Jan 2023 at 22:28, Till Hofmann <thofmann(a)fedoraproject.org&gt; wrote:
>  Hi all,
>
>  Someone (rightfully) suggested that we should build glfw twice, once
>  with wayland support and once without:
>  https://bugzilla.redhat.com/show_bug.cgi?id=2152319
>
>  Is there any best practice how to build the same package in two
>  different flavors, in this case cmake-based? I vaguely remember seeing a
>  spec file that did that, but I don't remember where.
>
>  Thanks for any pointers! 
In flexiblas.spec, for 64-bit BLAS, we do

%build
%cmake -B build \
    <options>
%make_build -C build
%if 0%{?__isa_bits} == 64
%cmake -B build64 \
    <options>
%make_build -C build64
%endif

%install
%make_install -C build
%if 0%{?__isa_bits} == 64
%make_install -C build64
%endif

etc.

-- 
Iñaki Úcar