sci-libs/libsvm: add 3.37

Closes: https://bugs.gentoo.org/952674
Signed-off-by: Sam James <sam@gentoo.org>

sci-libs/libsvm/Manifest

@@ -1 +1,2 @@
 DIST libsvm-3.3.tar.gz 910001 BLAKE2B 69364210998e496e333c6a87a66ad3f1515f2b3e98fe7bc579e8aee6d4df0473a4282f979d4f7d1729ce7080fd8b009ce830caab0ac37b57fafff0d2686e86e0 SHA512 705cdebffce0d9ea053cf51b2bfd46303d306b7a2c34ee46065f19e1227459fbdbe6fde6e4769935a0c225da831ec137fb9c0c28fbc2efa06724a94bdd76500d
+DIST libsvm-3.37.tar.gz 943582 BLAKE2B 6b085d8473242d35d7416baecba887fedb432a803b47e99dccee9f46859d6e22f63fc487df3448fd535aa8673b22d529bdb28fc23a53326eb74361dd72431ec5 SHA512 c5ecee6e46dc4b16995af16ab90330aa0804155787301fb6046d790828634d809b90f85675d252020ae7ca60ca2c19cd9eaa3ac53ac50f2674d76ac2b12001cc

sci-libs/libsvm/files/libsvm-3.37-makefile.patch

@@ -0,0 +1,44 @@
+diff --git a/Makefile b/Makefile
+index 1bc5d4e..a8a46a9 100644
+--- a/Makefile
++++ b/Makefile
+@@ -1,28 +1,30 @@
+ CXX ?= g++
+-CFLAGS = -Wall -Wconversion -O3 -fPIC
++CFLAGS ?= -Wall -Wconversion
++CXXFLAGS ?= $(CFLAGS)
+ SHVER = 4
+ OS = $(shell uname)
+ ifeq ($(OS),Darwin)
+-	SHARED_LIB_FLAG = -dynamiclib -Wl,-install_name,libsvm.so.$(SHVER)
++	SHARED_LIB_FLAG = -dynamiclib -Wl,-install_name,libsvm.so.$(SHVER) -fPIC
+ else
+-	SHARED_LIB_FLAG = -shared -Wl,-soname,libsvm.so.$(SHVER)
++	SHARED_LIB_FLAG = -shared -Wl,-soname,libsvm.so.$(SHVER) -fPIC
+ endif
+ 
+ # Uncomment the following lines to enable parallelization with OpenMP
+ # CFLAGS += -fopenmp
+ # SHARED_LIB_FLAG += -fopenmp
+ 
+-all: svm-train svm-predict svm-scale
++all: svm-train svm-predict svm-scale lib
+ 
+ lib: svm.o
+-	$(CXX) $(SHARED_LIB_FLAG) svm.o -o libsvm.so.$(SHVER)
++	$(CXX) $(LDFLAGS) $(SHARED_LIB_FLAG) svm.o -o libsvm.so.$(SHVER)
++	ln -s libsvm.so.$(SHVER) libsvm.so
+ svm-predict: svm-predict.c svm.o
+-	$(CXX) $(CFLAGS) svm-predict.c svm.o -o svm-predict -lm
++	$(CXX) $(CFLAGS) $(LDFLAGS) svm-predict.c svm.o -o svm-predict -lm
+ svm-train: svm-train.c svm.o
+-	$(CXX) $(CFLAGS) svm-train.c svm.o -o svm-train -lm
++	$(CXX) $(CFLAGS) $(LDFLAGS) svm-train.c svm.o -o svm-train -lm
+ svm-scale: svm-scale.c
+-	$(CXX) $(CFLAGS) svm-scale.c -o svm-scale
++	$(CXX) $(CFLAGS) $(LDFLAGS) svm-scale.c -o svm-scale
+ svm.o: svm.cpp svm.h
+-	$(CXX) $(CFLAGS) -c svm.cpp
++	$(CXX) $(CXXFLAGS) -c svm.cpp
+ clean:
+ 	rm -f *~ svm.o svm-train svm-predict svm-scale libsvm.so.$(SHVER)

sci-libs/libsvm/libsvm-3.37.ebuild

@@ -0,0 +1,111 @@
+# Copyright 1999-2026 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+PYTHON_COMPAT=( python3_{11..14} )
+
+inherit java-pkg-opt-2 python-r1 toolchain-funcs
+
+DESCRIPTION="Library for Support Vector Machines"
+HOMEPAGE="https://www.csie.ntu.edu.tw/~cjlin/libsvm/"
+SRC_URI="https://www.csie.ntu.edu.tw/~cjlin/libsvm/${PN}-${PV/0}.tar.gz"
+S="${WORKDIR}/${PN}-${PV/0}"
+
+LICENSE="BSD"
+SLOT="0/2"
+KEYWORDS="~amd64 ~ppc ~ppc64 ~x86"
+IUSE="java openmp python tools"
+REQUIRED_USE="python? ( ${PYTHON_REQUIRED_USE} )"
+
+DEPEND="
+	java? ( >=virtual/jdk-1.8:* )
+	python? ( ${PYTHON_DEPS} )
+"
+RDEPEND="
+	java? ( >=virtual/jre-1.8:* )
+	python? ( ${PYTHON_DEPS} )
+	tools? ( sci-visualization/gnuplot )
+"
+
+PATCHES=(
+	"${FILESDIR}"/${PN}-3.37-makefile.patch
+)
+
+pkg_pretend() {
+	[[ ${MERGE_TYPE} != binary ]] && use openmp && tc-check-openmp
+}
+
+pkg_setup() {
+	[[ ${MERGE_TYPE} != binary ]] && use openmp && tc-check-openmp
+}
+
+src_prepare() {
+	default
+	java-pkg_clean
+
+	sed -i -e "s@\.\./@${EPREFIX}/usr/bin/@g" tools/*.py \
+		|| die "Failed to fix paths in python files"
+	sed -i -e "s|./grid.py|${EPREFIX}/usr/bin/svm-grid|g" tools/*.py \
+		|| die "Failed to fix paths for svm-grid"
+	sed -i -e 's/grid.py/svm-grid/g' tools/grid.py \
+		|| die "Failed to rename grid.py to svm-grid"
+}
+
+src_configure() {
+	use java && export JAVAC_FLAGS="$(java-pkg_javac-args)"
+	if use openmp; then
+		export OPENMP_CFLAGS="-fopenmp -DOPENMP"
+		export OPENMP_LIBS="-fopenmp"
+	fi
+
+	tc-export CXX CC
+}
+
+src_compile() {
+	default
+	use java && emake -C java
+}
+
+src_install() {
+	dobin svm-train svm-predict svm-scale
+	dolib.so *.so*
+	doheader svm.h
+
+	DOCS=( README )
+
+	if use tools; then
+		local t
+		for t in tools/*.py; do
+			python_foreach_impl python_newscript ${t} svm-$(basename ${t} .py)
+		done
+
+		mv tools/README{,.tools} || die
+		DOCS+=( tools/README.tools )
+
+		docinto examples
+		dodoc heart_scale
+		dodoc -r svm-toy
+		docompress -x /usr/share/doc/${PF}/examples
+	fi
+
+	if use python ; then
+		installation() {
+			touch python/__init__.py || die
+			python_moduleinto libsvm
+			python_domodule python/*.py
+		}
+		python_foreach_impl installation
+
+		mv python/README{,.python} || die
+		DOCS+=( python/README.python )
+	fi
+
+	HTML_DOCS=( FAQ.html )
+	if use java; then
+		java-pkg_dojar java/libsvm.jar
+		HTML_DOCS+=( java/test_applet.html )
+	fi
+
+	einstalldocs
+}