#!/usr/bin/env modbuild

pbuild::set_download_url "http://elpa.mpcdf.mpg.de/html/Releases/${V_PKG}/$P-${V_PKG}.tar.gz"
pbuild::add_to_group 'MPI'
pbuild::use_autotools
pbuild::install_docfiles 'COPYING/COPYING'
pbuild::install_docfiles 'COPYING/gpl.txt'
pbuild::install_docfiles 'COPYING/lgpl.txt'

pbuild::supported_os Linux
pbuild::supported_compilers Intel

pbuild::pre_configure() {
        local -r MKL_LIBRARY_DIR=${MKLROOT}/lib/intel64
        local -r MKL_INCLUDE_DIR=${MKLROOT}/include

	local -a flags=()
	if pbuild::use_flag "omp"; then
		flags+=('-qopenmp')
		pbuild::add_configure_args "--enable-openmp"
	else
		flags+=('-qno-openmp')
	fi
	flags+=('-O2' '-fPIC' '-g')
	flags+=('-fp-model precise' '-funroll-loops')
	flags+=('-traceback' '-xHost')

	local -a cflags=()
	cflags+=("${flags[@]}")
	cflags+=('-I${MKL_INCLUDE_DIR}')

	local -a fcflags=()
	fcflags+=("${flags[@]}")
	fcflags+=( '-fpp' '-free')
	fcflags+=("-I${MKL_INCLUDE_DIR}/intel64/lp64")

	local -a ldflags=()
	ldflags+=("-L${MKL_LIBRARY_DIR}")
	ldflags+=('-lmkl_scalapack_lp64' '-lmkl_intel_lp64' '-lmkl_sequential')
	ldflags+=('-lmkl_core' '-lmkl_blacs_intelmpi_lp64' '-lpthread')

	local -a scalapack_fcflags=()
	scalapack_fcflags+=( "${ldflags[@]}" )
        scalapack_fcflags+=("-I${MKL_INCLUDE_DIR}/intel64/lp64")

	local -a scalapack_ldflags=()
	scalapack_ldflags+=( "${ldflags[@]}" )
        scalapack_ldflags+=("-Wl,-rpath,${MKL_LIBRARY_DIR}")

	pbuild::add_configure_args "CC=${MPICC}"
	pbuild::add_configure_args "CXX=${MPICXX}"
	pbuild::add_configure_args "FC=${MPIFC}"
	pbuild::add_configure_args "CFLAGS=${cflags[*]}"
	pbuild::add_configure_args "CXXFLAGS=${cflags[*]}"
	pbuild::add_configure_args "FCFLAGS=${fcflags[*]}"
	pbuild::add_configure_args "LDFLAGS=${ldflags[*]}"
	pbuild::add_configure_args "SCALAPACK_FCFLAGS=${scalapack_fcflags[*]}"
	pbuild::add_configure_args "SCALAPACK_LDLAGS=${scalapack_ldflags[*]}"
        pbuild::add_configure_args "--disable-shared"
	pbuild::add_configure_args "--enable-static"
	pbuild::add_configure_args "--enable-avx512"
}

pbuild::post_install() {
	if pbuild::use_flag "omp"; then
		ln -fs "elpa_openmp-${V_PKG}/elpa" "${PREFIX}/include/elpa"
		ln -fs "elpa_openmp-${V_PKG}/modules" "${PREFIX}/include/modules"
	else
		ln -fs "elpa-${V_PKG}/elpa" "${PREFIX}/include/elpa"
		ln -fs "elpa-${V_PKG}/modules" "${PREFIX}/include/modules"
	fi
}