sci-libs/flann: fixed (probably) boost 1.87 issues

Bug: https://bugs.gentoo.org/946465
Signed-off-by: Miroslav Šulc <fordfrog@gentoo.org>

2 files changed, 159 insertions, 0 deletions

diff --git a/sci-libs/flann/files/flann-1.9.1-boost-1.87.patch b/sci-libs/flann/files/flann-1.9.1-boost-1.87.patch
new file mode 100644
index 000000000000..e18604528684
--- /dev/null
+++ b/sci-libs/flann/files/flann-1.9.1-boost-1.87.patch
@@ -0,0 +1,64 @@
+diff --git a/src/cpp/flann/mpi/client.h b/src/cpp/flann/mpi/client.h
+index 19a410c..b7df70e 100644
+--- a/src/cpp/flann/mpi/client.h
++++ b/src/cpp/flann/mpi/client.h
+@@ -45,17 +45,16 @@ class Client
+ public:
+ 	Client(const std::string& host, const std::string& service)
+ 	{
+-	    tcp::resolver resolver(io_service_);
+-	    tcp::resolver::query query(tcp::v4(), host, service);
+-	    iterator_ = resolver.resolve(query);
++	    tcp::resolver resolver(io_context_);
++            results_ = resolver.resolve(host, service);
+ 	}
+ 
+ 
+ 	template<typename ElementType, typename DistanceType>
+ 	void knnSearch(const flann::Matrix<ElementType>& queries, flann::Matrix<int>& indices, flann::Matrix<DistanceType>& dists, int knn, const SearchParams& params)
+ 	{
+-	    tcp::socket sock(io_service_);
+-	    sock.connect(*iterator_);
++	    tcp::socket sock(io_context_);
++	    boost::asio::connect(sock, results_);
+ 
+ 	    Request<ElementType> req;
+ 	    req.nn = knn;
+@@ -78,8 +77,8 @@ public:
+ 
+ 
+ private:
+-	boost::asio::io_service io_service_;
+-	tcp::resolver::iterator iterator_;
++	boost::asio::io_context io_context_;
++	tcp::resolver::results_type results_;
+ };
+ 
+ 
+diff --git a/src/cpp/flann/mpi/server.h b/src/cpp/flann/mpi/server.h
+index 2caab43..a90538e 100644
+--- a/src/cpp/flann/mpi/server.h
++++ b/src/cpp/flann/mpi/server.h
+@@ -119,18 +119,18 @@ public:
+ 	void run()
+ 	{
+ 		boost::mpi::communicator world;
+-		boost::shared_ptr<boost::asio::io_service> io_service;
++		boost::shared_ptr<boost::asio::io_context> io_context;
+ 		boost::shared_ptr<tcp::acceptor> acceptor;
+ 
+ 		if (world.rank()==0) {
+-			io_service.reset(new boost::asio::io_service());
+-			acceptor.reset(new tcp::acceptor(*io_service, tcp::endpoint(tcp::v4(), port_)));
++			io_context.reset(new boost::asio::io_context());
++			acceptor.reset(new tcp::acceptor(*io_context, tcp::endpoint(tcp::v4(), port_)));
+ 			std::cout << "Start listening for queries...\n";
+ 		}
+ 		for (;;) {
+ 			socket_ptr sock;
+ 			if (world.rank()==0) {
+-				sock.reset(new tcp::socket(*io_service));
++				sock.reset(new tcp::socket(*io_context));
+ 				acceptor->accept(*sock);
+ 				std::cout << "Accepted connection\n";
+ 			}
diff --git a/sci-libs/flann/flann-1.9.1-r7.ebuild b/sci-libs/flann/flann-1.9.1-r7.ebuild
new file mode 100644
index 000000000000..8bd2008b221d
--- /dev/null
+++ b/sci-libs/flann/flann-1.9.1-r7.ebuild
@@ -0,0 +1,95 @@
+# Copyright 1999-2025 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+inherit cmake cuda flag-o-matic toolchain-funcs
+
+DESCRIPTION="Fast approximate nearest neighbor searches in high dimensional spaces"
+HOMEPAGE="https://github.com/mariusmuja/flann"
+SRC_URI="https://github.com/mariusmuja/${PN}/archive/${PV}.tar.gz -> ${P}.tar.gz"
+
+LICENSE="BSD"
+SLOT="0"
+KEYWORDS="amd64 ~arm arm64 ~ppc ~x86 ~amd64-linux ~x86-linux"
+IUSE="cuda doc examples mpi octave openmp"
+
+BDEPEND="
+	app-arch/unzip
+	doc? ( dev-tex/latex2html )
+	mpi? ( app-admin/chrpath )
+"
+DEPEND="
+	app-arch/lz4:=
+	cuda? ( >=dev-util/nvidia-cuda-toolkit-5.5 )
+	mpi? (
+		dev-libs/boost:=[mpi]
+		sci-libs/hdf5:=[mpi]
+	)
+	!mpi? ( !sci-libs/hdf5[mpi] )
+	octave? ( >=sci-mathematics/octave-3.6.4-r1:= )
+"
+RDEPEND="${DEPEND}"
+# TODO:
+# readd dependencies for test suite,
+# requires multiple ruby dependencies
+
+PATCHES=(
+	"${FILESDIR}"/${P}-cmake-3.11{,-1}.patch # bug 678030
+	"${FILESDIR}"/${P}-cuda-9.patch
+	"${FILESDIR}"/${P}-system-lz4.patch # bug 681898
+	"${FILESDIR}"/${P}-system-lz4-pkgconfig.patch # bug 827263
+	"${FILESDIR}"/${P}-build-oct-rather-than-mex-files-for-octave.patch # bug 830424
+	"${FILESDIR}"/${P}-boost-1.87.patch # bug 946465
+)
+
+pkg_pretend() {
+	[[ ${MERGE_TYPE} != binary ]] && use openmp && tc-check-openmp
+}
+
+pkg_setup() {
+	[[ ${MERGE_TYPE} != binary ]] && use openmp && tc-check-openmp
+}
+
+src_prepare() {
+	# bug #302621
+	use mpi && export CXX=mpicxx
+
+	use cuda && cuda_src_prepare
+
+	cmake_src_prepare
+}
+
+src_configure() {
+	append-cxxflags -std=c++11
+
+	# python bindings are split off into dev-python/pyflann
+	local mycmakeargs=(
+		-DBUILD_C_BINDINGS=ON
+		-DBUILD_PYTHON_BINDINGS=OFF
+		-DPYTHON_EXECUTABLE=
+		-DBUILD_CUDA_LIB=$(usex cuda)
+		-DBUILD_EXAMPLES=$(usex examples)
+		-DBUILD_DOC=$(usex doc)
+		-DBUILD_TESTS=OFF
+		-DBUILD_MATLAB_BINDINGS=$(usex octave)
+		-DUSE_MPI=$(usex mpi)
+		-DUSE_OPENMP=$(usex openmp)
+	)
+	use cuda && mycmakeargs+=(
+		-DCUDA_NVCC_FLAGS="${NVCCFLAGS} --linker-options \"-arsch\""
+	)
+	use doc && mycmakeargs+=( -DDOCDIR=share/doc/${PF} )
+
+	cmake_src_configure
+}
+
+src_install() {
+	cmake_src_install
+	find "${D}" -name 'lib*.a' -delete || die
+
+	# bug 795828; mpicc volunterely adds some runpaths
+	if use mpi; then
+		chrpath -d "${ED}"/usr/bin/flann_mpi_{client,server} || die
+	fi
+}