dev-cpp/eigen: fix installed CMake files in 3.4.0

We were using a special path which doesn't seem
necessary anymore (and indeed wasn't working
in 3.4.0 anyway).

Closes: https://bugs.gentoo.org/show_bug.cgi?id=816450
Closes: https://bugs.gentoo.org/show_bug.cgi?id=816447
Closes: https://bugs.gentoo.org/show_bug.cgi?id=816444
Closes: https://bugs.gentoo.org/show_bug.cgi?id=816441
Closes: https://bugs.gentoo.org/show_bug.cgi?id=816435
Closes: https://bugs.gentoo.org/show_bug.cgi?id=816432
Closes: https://bugs.gentoo.org/show_bug.cgi?id=816429
Closes: https://bugs.gentoo.org/show_bug.cgi?id=816372
Signed-off-by: Sam James <sam@gentoo.org>

1 files changed, 105 insertions, 0 deletions

diff --git a/dev-cpp/eigen/eigen-3.4.0-r1.ebuild b/dev-cpp/eigen/eigen-3.4.0-r1.ebuild
new file mode 100644
index 000000000000..8bd4d5d66425
--- /dev/null
+++ b/dev-cpp/eigen/eigen-3.4.0-r1.ebuild
@@ -0,0 +1,105 @@
+# Copyright 1999-2021 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+
+FORTRAN_NEEDED="test"
+inherit cmake cuda fortran-2
+
+DESCRIPTION="C++ template library for linear algebra"
+HOMEPAGE="https://eigen.tuxfamily.org/index.php?title=Main_Page"
+SRC_URI="https://gitlab.com/lib${PN}/${PN}/-/archive/${PV}/${P}.tar.gz"
+
+LICENSE="MPL-2.0"
+SLOT="3"
+KEYWORDS="~amd64 ~arm ~arm64 ~ppc ~ppc64 ~riscv ~sparc ~x86 ~amd64-linux ~x86-linux"
+IUSE="cpu_flags_arm_neon cpu_flags_ppc_altivec cpu_flags_ppc_vsx cuda debug doc openmp test" #zvector
+
+# Tests failing again because of compiler issues
+RESTRICT="!test? ( test ) test"
+
+BDEPEND="
+	doc? (
+		app-doc/doxygen[dot]
+		dev-texlive/texlive-bibtexextra
+		dev-texlive/texlive-fontsextra
+		dev-texlive/texlive-fontutils
+		dev-texlive/texlive-latex
+		dev-texlive/texlive-latexextra
+	)
+	test? ( virtual/pkgconfig )
+"
+DEPEND="
+	cuda? ( dev-util/nvidia-cuda-toolkit )
+	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/scotch
+		sci-libs/spqr
+		sci-libs/superlu
+		sci-libs/umfpack
+		virtual/opengl
+	)
+"
+# Missing:
+# METIS-5
+# GOOGLEHASH
+
+PATCHES=(
+	#"${FILESDIR}"/${PN}-3.3.7-gentoo-cmake.patch
+	"${FILESDIR}"/${PN}-3.3.9-max-macro.patch
+)
+
+src_prepare() {
+	cmake_src_prepare
+
+	cmake_comment_add_subdirectory demos
+
+	if ! use test; then
+		sed -e "/add_subdirectory(test/s/^/#DONOTCOMPILE /g" \
+			-e "/add_subdirectory(blas/s/^/#DONOTCOMPILE /g" \
+			-e "/add_subdirectory(lapack/s/^/#DONOTCOMPILE /g" \
+			-i CMakeLists.txt || die
+	fi
+
+	use cuda && cuda_src_prepare
+}
+
+src_configure() {
+	use test && mycmakeargs+=(
+		# the OpenGL testsuite is extremely brittle, bug #712808
+		-DEIGEN_TEST_NO_OPENGL=ON
+		# the cholmod tests are broken and always fail
+		-DCMAKE_DISABLE_FIND_PACKAGE_Cholmod=ON
+		-DEIGEN_TEST_CXX11=ON
+		-DEIGEN_TEST_NOQT=ON
+		-DEIGEN_TEST_ALTIVEC=$(usex cpu_flags_ppc_altivec)
+		-DEIGEN_TEST_CUDA=$(usex cuda)
+		-DEIGEN_TEST_OPENMP=$(usex openmp)
+		-DEIGEN_TEST_NEON64=$(usex cpu_flags_arm_neon)
+		-DEIGEN_TEST_VSX=$(usex cpu_flags_ppc_vsx)
+	)
+	cmake_src_configure
+}
+
+src_compile() {
+	cmake_src_compile
+	if use doc; then
+		cmake_src_compile doc
+		HTML_DOCS=( "${BUILD_DIR}"/doc/html/. )
+	fi
+	if use test; then
+		cmake_src_compile blas
+		cmake_src_compile buildtests
+
+		# tests generate random data, which
+		# obviously fails for some seeds
+		export EIGEN_SEED=712808
+	fi
+}