sci-mathematics/petsc: EAPI 8

Closes: https://bugs.gentoo.org/820899
Package-Manager: Portage-3.0.28, Repoman-3.0.3
Signed-off-by: Alessandro Barbieri <lssndrbarbieri@gmail.com>
Closes: https://github.com/gentoo/gentoo/pull/22866
Signed-off-by: Andrew Ammerlaan <andrewammerlaan@gentoo.org>

2 files changed, 198 insertions, 3 deletions

diff --git a/sci-mathematics/petsc/metadata.xml b/sci-mathematics/petsc/metadata.xml
index 0e7b7486eb3a..f6072e8edac1 100644
--- a/sci-mathematics/petsc/metadata.xml
+++ b/sci-mathematics/petsc/metadata.xml
@@ -12,12 +12,13 @@
 	<use>
 		<flag name="afterimage">Use Afterstep image library (media-libs/libafterimage)</flag>
 		<flag name="boost">Use boost (dev-libs/boost)</flag>
-		<flag name="hypre">Use HYPRE (sci-mathematics/hypre) and for preconditioning</flag>
 		<flag name="complex-scalars">Make scalars complex</flag>
+		<flag name="hypre">Use HYPRE (sci-mathematics/hypre) and for preconditioning</flag>
+		<flag name="int64">Use 64 bit indexes</flag>
 		<flag name="metis">Add support for metis (<pkg>sci-libs/parmetis</pkg>)</flag>
-		<flag name="sparse">Use suitesparse (sci-libs/suitesparse) including cholmod (sci-libs/cholmod) for sparse factorization</flag>
-		<flag name="superlu">Use superlu (sci-libs/superlu) for preconditioning</flag>
 		<flag name="mumps">Add support for mumps (<pkg>sci-libs/mumps</pkg>)</flag>
 		<flag name="scotch">Add support for scotch (<pkg>sci-libs/scotch</pkg>)</flag>
+		<flag name="sparse">Use suitesparse (sci-libs/suitesparse) including cholmod (sci-libs/cholmod) for sparse factorization</flag>
+		<flag name="superlu">Use superlu (sci-libs/superlu) for preconditioning</flag>
 	</use>
 </pkgmetadata>
diff --git a/sci-mathematics/petsc/petsc-3.15.0-r1.ebuild b/sci-mathematics/petsc/petsc-3.15.0-r1.ebuild
new file mode 100644
index 000000000000..5da94f15ff16
--- /dev/null
+++ b/sci-mathematics/petsc/petsc-3.15.0-r1.ebuild
@@ -0,0 +1,194 @@
+# Copyright 1999-2021 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+PYTHON_COMPAT=( python3_{8..10} pypy3 )
+
+inherit flag-o-matic fortran-2 python-any-r1 toolchain-funcs
+
+DESCRIPTION="Portable, Extensible Toolkit for Scientific Computation"
+HOMEPAGE="https://www.mcs.anl.gov/petsc"
+SRC_URI="http://ftp.mcs.anl.gov/pub/petsc/release-snapshots/${P}.tar.gz"
+
+LICENSE="BSD-2"
+SLOT="0"
+KEYWORDS="~amd64 ~x86"
+IUSE="afterimage boost complex-scalars cxx debug fftw
+fortran hdf5 hypre int64 mpi metis mumps scotch superlu threads X"
+
+# readd sparse when suitesparse-5.6.0 is in tree
+# sparse? ( >=sci-libs/suitesparse-5.6.0 >=sci-libs/cholmod-1.7.0 )
+# $(use_with sparse suitesparse) \
+RDEPEND="
+	virtual/blas
+	virtual/lapack
+
+	afterimage? ( media-libs/libafterimage )
+	boost? ( dev-libs/boost )
+	fftw? ( sci-libs/fftw:3.0[mpi?] )
+	hdf5? ( sci-libs/hdf5[mpi?] )
+	hypre? ( >=sci-libs/hypre-2.18.0[int64?,mpi?] )
+	metis? ( >=sci-libs/parmetis-4 )
+	mpi? ( virtual/mpi[cxx?,fortran?] )
+	mumps? ( sci-libs/mumps[mpi?] sci-libs/scalapack )
+	scotch? ( sci-libs/scotch[int64?,mpi?] )
+	superlu? ( >=sci-libs/superlu-5 )
+	X? ( x11-libs/libX11 )
+"
+DEPEND="
+	${RDEPEND}
+	${PYTHON_DEPS}
+"
+BDEPEND="
+	dev-util/cmake
+	sys-apps/which
+	virtual/pkgconfig
+"
+
+# hypre and superlu curretly exclude each other due to missing linking to hypre
+# if both are enabled
+REQUIRED_USE="
+	afterimage? ( X )
+	complex-scalars? ( !hypre !superlu )
+	hdf5? ( mpi )
+	hypre? ( cxx mpi !superlu )
+	mumps? ( mpi scotch )
+	scotch? ( mpi )
+	superlu? ( !hypre )
+"
+PATCHES=(
+	"${FILESDIR}/${PN}-3.7.0-disable-rpath.patch"
+	"${FILESDIR}/${PN}-3.13.0-fix_sandbox_violation.patch"
+)
+
+# petsc uses --with-blah=1 and --with-blah=0 to en/disable options
+petsc_enable() {
+	use "$1" && echo "--with-${2:-$1}=1" || echo "--with-${2:-$1}=0"
+}
+# add external library:
+# petsc_with use_flag libname libdir
+# petsc_with use_flag libname include linking_libs
+petsc_with() {
+	local myuse p=${2:-${1}}
+	if use ${1}; then
+		myuse="--with-${p}=1"
+		if [[ $# -ge 4 ]]; then
+			myuse="${myuse} --with-${p}-include=${EPREFIX}${3}"
+			shift 3
+			myuse="${myuse} --with-${p}-lib=$@"
+		else
+			myuse="${myuse} --with-${p}-dir=${EPREFIX}${3:-/usr}"
+		fi
+	else
+		myuse="--with-${p}=0"
+	fi
+	echo ${myuse}
+}
+
+# select between configure options depending on use flag
+petsc_select() {
+	use "$1" && echo "--with-$2=$3" || echo "--with-$2=$4"
+}
+
+src_configure() {
+	# bug 548498
+	# PETSc runs mpi processes during configure that result in a sandbox
+	# violation by trying to open /proc/mtrr rw. This is not easy to
+	# mitigate because it happens in libpciaccess.so called by libhwloc.so,
+	# which is used by libmpi.so.
+	addpredict /proc/mtrr
+	# if mpi is built with knem support it needs /dev/knem too
+	addpredict /dev/knem
+
+	# configureMPITypes with openmpi-2* insists on accessing the scaling
+	# governor rw.
+	addpredict /sys/devices/system/cpu/
+
+	# bug 771711
+	# configureMPIEXEC and  configureMPITypes access /dev/nvidiactl
+	addpredict /dev/nvidiactl
+
+	# bug 810841
+	addpredict /dev/kfd
+
+	local mylang
+	local myopt
+
+	use cxx && mylang="cxx" || mylang="c"
+	use debug && myopt="debug" || myopt="opt"
+
+	# environmental variables expected by petsc during build
+
+	export PETSC_DIR="${S}"
+	export PETSC_ARCH="linux-gnu-${mylang}-${myopt}"
+
+	if use debug; then
+		strip-flags
+		filter-flags -O*
+	fi
+
+	tc-export AR RANLIB
+
+	# C Support on CXX builds is enabled if possible i.e. when not using
+	# complex scalars (no complex type for both available at the same time)
+
+	econf \
+		scrollOutput=1 \
+		AR="${AR}" \
+		CFLAGS="${CFLAGS} -fPIC" \
+		CPPFLAGS="${CPPFLAGS}" \
+		CXXFLAGS="${CXXFLAGS} -fPIC" \
+		CXXOPTFLAGS="${CXXFLAGS} -fPIC" \
+		FCFLAGS="${FCFLAGS} -fPIC" \
+		FFLAGS="${FFLAGS} -fPIC" \
+		LDFLAGS="${LDFLAGS}" \
+		MAKEFLAGS="${MAKEFLAGS}" \
+		RANLIB="${RANLIB}" \
+		--prefix="${EPREFIX}/usr/$(get_libdir)/petsc" \
+		--with-blas-lapack-lib="$($(tc-getPKG_CONFIG) --libs blas lapack)" \
+		--with-clanguage="${mylang}" \
+		--with-cmake:BOOL=1 \
+		--with-gnu-compilers \
+		--with-imagemagick=0 \
+		--with-matlab=0 \
+		--with-petsc-arch="${PETSC_ARCH}" \
+		--with-precision=double \
+		--with-python=0 \
+		--with-shared-libraries \
+		--with-single-library \
+		--with-windows-graphics=0 \
+		$(petsc_enable debug debugging) \
+		$(petsc_enable fortran) \
+		$(petsc_enable mpi) \
+		$(petsc_enable mpi mpi-compilers) \
+		$(petsc_enable threads pthread) \
+		$(petsc_select complex-scalars scalar-type complex real) \
+		$(petsc_select mpi cc mpicc $(tc-getCC)) \
+		$(petsc_select mpi cxx mpicxx $(tc-getCXX)) \
+		$(petsc_with afterimage afterimage /usr/include/libAfterImage -lAfterImage) \
+		$(petsc_with hypre hypre /usr/include/hypre -lHYPRE) \
+		$(petsc_with superlu superlu /usr/include/superlu -lsuperlu) \
+		$(petsc_with scotch ptscotch /usr/include/scotch [-lptesmumps,-lptscotch,-lptscotcherr,-lscotch,-lscotcherr]) \
+		$(petsc_with mumps scalapack /usr/include/scalapack -lscalapack) \
+		$(use cxx && ! use complex-scalars && echo "--with-c-support=1") \
+		$(use fortran && echo "$(petsc_select mpi fc mpif77 $(tc-getF77))") \
+		$(use int64 && echo "--with-index-size=64") \
+		$(use_with boost) \
+		$(use_with fftw) \
+		$(use_with hdf5) \
+		$(use_with mumps mumps /usr/include [-lcmumps,-ldmumps,-lsmumps,-lzmumps,-lmumps_common,-lpord]) \
+		$(use_with X x) \
+		$(use_with X x11)
+}
+
+src_install() {
+	emake DESTDIR="${ED}" install
+
+	# add PETSC_DIR to environmental variables
+	cat >> 99petsc <<- EOF
+		PETSC_DIR=${EPREFIX}/usr/$(get_libdir)/petsc
+		LDPATH=${EPREFIX}/usr/$(get_libdir)/petsc/lib
+	EOF
+	doenvd 99petsc
+}