#----------------------------------------------------------------------------bh-
# This RPM .spec file is part of the OpenHPC project.
#
# It may have been modified from the default version supplied by the underlying
# release package (if available) in order to apply patches, perform customized
# build/install configurations, and supply additional files to support
# desired integration conventions.
#
#----------------------------------------------------------------------------eh-

# FFTW library that is is dependent on compiler toolchain and MPI
%define ohpc_compiler_dependent 1
%define ohpc_mpi_dependent 1
%include %{_sourcedir}/OHPC_macros

# Base package name
%define pname fftw

# Not building quad-precision because: "quad precision is not supported in MPI"
%global precision_list single double long-double

Summary:   A Fast Fourier Transform library
Name:      %{pname}-%{compiler_family}-%{mpi_family}%{PROJ_DELIM}
Version:   3.3.10
Release:   420.ohpc.1.2
License:   GPLv2+
Group:     %{PROJ_NAME}/parallel-libs
URL:       http://www.fftw.org
Source0:   http://www.fftw.org/fftw-%{version}.tar.gz

%define openmp        1
%define mpi           1

BuildRequires:        perl
BuildRequires:        util-linux
BuildRequires:        make
%if "%{compiler_family}" == "intel"
BuildRequires:        autoconf automake libtool
%endif

# Default library install path
%define install_path %{OHPC_LIBS}/%{compiler_family}/%{mpi_family}/%{pname}%{OHPC_CUSTOM_PKG_DELIM}/%version

%description
FFTW is a C subroutine library for computing the Discrete Fourier
Transform (DFT) in one or more dimensions, of both real and complex
data, and of arbitrary input size.

%prep
%setup -q -n %{pname}-%{version}

%build
# OpenHPC compiler/mpi designation
%ohpc_setup_compiler

BASEFLAGS="--enable-shared --disable-dependency-tracking --enable-threads"
%if %{openmp}
BASEFLAGS="$BASEFLAGS --enable-openmp"
%endif
%if %{mpi}
BASEFLAGS="$BASEFLAGS --enable-mpi"
%endif

%if "%{compiler_family}" == "intel"
rm -rf autom4te.cache
autoreconf --verbose --install --symlink --force
rm -f config.cache
%endif

for i in %{precision_list} ; do
	LOOPBASEFLAGS=${BASEFLAGS}
	if [[ "${i}" == "single" || "${i}" == "double" ]]; then
		# taken from https://src.fedoraproject.org/rpms/fftw/blob/master/f/fftw.spec
%ifarch x86_64
		LOOPBASEFLAGS="${LOOPBASEFLAGS} --enable-sse2 --enable-avx --enable-avx2"
%endif
%ifarch aarch64
		LOOPBASEFLAGS="${LOOPBASEFLAGS} --enable-neon"
%endif
%ifarch ppc64le
		LOOPBASEFLAGS="${LOOPBASEFLAGS} --enable-vsx"
%endif
	fi
	mkdir ${i}
	cd ${i}
	ln -s ../configure
	./configure --prefix=%{install_path} ${LOOPBASEFLAGS} \
		--enable-${i} \
		--enable-static=no || { cat config.log && exit 1; }
	make %{?_smp_mflags}
	cd ..
done

%install
# OpenHPC compiler designation
%ohpc_setup_compiler

for i in %{precision_list}; do
	cd ${i}
	make DESTDIR=$RPM_BUILD_ROOT install
	cd ..
done

# don't package static libs
rm -f $RPM_BUILD_ROOT%{install_path}/lib/*la


# OpenHPC module file
%{__mkdir} -p %{buildroot}%{OHPC_MODULEDEPS}/%{compiler_family}-%{mpi_family}/%{pname}
%{__cat} << EOF > %{buildroot}/%{OHPC_MODULEDEPS}/%{compiler_family}-%{mpi_family}/%{pname}/%{version}%{OHPC_CUSTOM_PKG_DELIM}
#%Module1.0#####################################################################

proc ModulesHelp { } {

puts stderr " "
puts stderr "This module loads the %{pname} library built with the %{compiler_family} compiler"
puts stderr "toolchain and the %{mpi_family} MPI stack."
puts stderr "\nVersion %{version}\n"

}
module-whatis "Name: %{pname} built with %{compiler_family} compiler and %{mpi_family} MPI"
module-whatis "Version: %{version}"
module-whatis "Category: runtime library"
module-whatis "Description: %{summary}"
module-whatis "URL %{url}"

set     version			    %{version}

prepend-path    PATH                %{install_path}/bin
prepend-path    MANPATH             %{install_path}/share/man
prepend-path    INCLUDE             %{install_path}/include
prepend-path	LD_LIBRARY_PATH	    %{install_path}/lib

setenv          %{PNAME}_DIR        %{install_path}
setenv          %{PNAME}_LIB        %{install_path}/lib
setenv          %{PNAME}_INC        %{install_path}/include

EOF

%{__cat} << EOF > %{buildroot}/%{OHPC_MODULEDEPS}/%{compiler_family}-%{mpi_family}/%{pname}/.version.%{version}%{OHPC_CUSTOM_PKG_DELIM}
#%Module1.0#####################################################################
##
## version file for %{pname}-%{version}
##
set     ModulesVersion      "%{version}%{OHPC_CUSTOM_PKG_DELIM}"
EOF

%{__mkdir} -p $RPM_BUILD_ROOT/%{_docdir}

%files
%{OHPC_PUB}
%doc AUTHORS ChangeLog CONVENTIONS COPYING COPYRIGHT INSTALL NEWS README TODO