dev-cpp/eigen: Fix prototype

Closes: https://bugs.gentoo.org/665488
Package-Manager: Portage-2.3.48, Repoman-2.3.10

dev-cpp/eigen/eigen-3.3.5-r1.ebuild

@@ -0,0 +1,101 @@
+# Copyright 1999-2018 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=6
+
+FORTRAN_NEEDED="test"
+inherit cmake-utils cuda fortran-2
+
+DESCRIPTION="C++ template library for linear algebra"
+HOMEPAGE="http://eigen.tuxfamily.org/"
+SRC_URI="https://bitbucket.org/eigen/eigen/get/${PV}.tar.bz2 -> ${P}.tar.bz2"
+
+LICENSE="MPL-2.0"
+SLOT="3"
+KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~ia64 ~ppc ~ppc64 ~sparc ~x86 ~amd64-linux ~x86-linux"
+IUSE="altivec c++11 cuda debug doc neon openmp test" #zvector vsx
+RESTRICT="!test? ( test )"
+
+RDEPEND="!dev-cpp/eigen:0"
+DEPEND="
+	doc? ( app-doc/doxygen[dot,latex] )
+	test? (
+		dev-libs/gmp:0
+		dev-libs/mpfr:0
+		media-libs/freeglut
+		media-libs/glew
+		sci-libs/adolc[sparse]
+		sci-libs/cholmod
+		sci-libs/fftw:3.0
+		sci-libs/pastix
+		sci-libs/umfpack
+		sci-libs/scotch
+		sci-libs/spqr
+		sci-libs/superlu
+		virtual/opengl
+		virtual/pkgconfig
+		cuda? ( dev-util/nvidia-cuda-toolkit )
+	)
+"
+# Missing:
+# METIS-5
+# GOOGLEHASH
+
+PATCHES=( "${FILESDIR}/${P}-fix-prototype.patch" )
+
+src_unpack() {
+	default
+	mv ${PN}* ${P} || die
+}
+
+src_prepare() {
+	cmake-utils_src_prepare
+
+	sed -e 's:-g2::g' \
+		-i cmake/EigenConfigureTesting.cmake || die
+
+	sed -e "/add_subdirectory(demos/d" \
+		-i CMakeLists.txt || die
+
+	if ! use test; then
+		sed -e "/add_subdirectory(test/d" \
+			-i CMakeLists.txt || die
+
+		sed -e "/add_subdirectory(blas/d" \
+			-e "/add_subdirectory(lapack/d" \
+			-i CMakeLists.txt || die
+	fi
+	sed -e "/Unknown build type/d" \
+		-i CMakeLists.txt || die
+
+	use cuda && cuda_src_prepare
+}
+
+src_compile() {
+	cmake-utils_src_compile
+	use doc && cmake-utils_src_compile doc
+}
+
+src_test() {
+	local mycmakeargs=(
+		-DEIGEN_TEST_NOQT=ON
+		-DEIGEN_TEST_ALTIVEC="$(usex altivec)"
+		-DEIGEN_TEST_CXX11="$(usex c++11)"
+		-DEIGEN_TEST_CUDA="$(usex cuda)"
+		-DEIGEN_TEST_OPENMP="$(usex openmp)"
+		-DEIGEN_TEST_NEON64="$(usex neon)"
+	)
+	cmake-utils_src_configure
+	cmake-utils_src_compile blas
+	cmake-utils_src_compile buildtests
+	cmake-utils_src_test
+}
+
+src_install() {
+	use doc && local HTML_DOCS=( "${BUILD_DIR}"/doc/html/. )
+	cmake-utils_src_install
+
+	# Debian installs it and some projects started using it.
+	insinto /usr/share/cmake/Modules/
+	doins "${S}/cmake/FindEigen3.cmake"
+}

dev-cpp/eigen/files/eigen-3.3.5-fix-prototype.patch

@@ -0,0 +1,19 @@
+# HG changeset patch
+# User Gael Guennebaud <g.gael@free.fr>
+# Date 1528444561 -7200
+# Node ID 27cac8430247a65739fcd0b83ef984d0a9c010c7
+# Parent  d4cbff8d06baf95045869ed7d0c012d641c88fcf
+fix prototype
+
+diff --git a/unsupported/Eigen/src/IterativeSolvers/DGMRES.h b/unsupported/Eigen/src/IterativeSolvers/DGMRES.h
+--- a/unsupported/Eigen/src/IterativeSolvers/DGMRES.h
++++ b/unsupported/Eigen/src/IterativeSolvers/DGMRES.h
+@@ -173,7 +173,7 @@
+   /** 
+    * Set the restart value (default is 30)  
+    */
+-  Index set_restart(const Index restart) { m_restart=restart; }
++  void set_restart(const Index restart) { m_restart=restart; }
+   
+   /** 
+    * Set the number of eigenvalues to deflate at each restart