cxxwrap4

cxxwrap4/Dockerfile

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+FROM julia:1.10.4
+
+RUN apt-get update && apt-get install -y --no-install-recommends build-essential cmake \
+    && apt-get clean && rm -rf /var/lib/apt/lists/*
+
+RUN julia -e 'using Pkg; Pkg.add("CxxWrap"); Pkg.precompile()'

cxxwrap4/Manifest.toml

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+# This file is machine-generated - editing it directly is not advised
+
+julia_version = "1.10.3"
+manifest_format = "2.0"
+project_hash = "ccf1a3757eeb779bee7bfa161a032801f22b27b7"
+
+[[deps.Artifacts]]
+uuid = "56f22d72-fd6d-98f1-02f0-08ddc0907c33"
+
+[[deps.Base64]]
+uuid = "2a0f44e3-6c83-55bd-87e4-b1978d98bd5f"
+
+[[deps.CxxWrap]]
+deps = ["Libdl", "MacroTools", "libcxxwrap_julia_jll"]
+git-tree-sha1 = "ba1a559afd562447710513525030d6ad83e5868a"
+uuid = "1f15a43c-97ca-5a2a-ae31-89f07a497df4"
+version = "0.15.1"
+
+[[deps.Dates]]
+deps = ["Printf"]
+uuid = "ade2ca70-3891-5945-98fb-dc099432e06a"
+
+[[deps.JLLWrappers]]
+deps = ["Artifacts", "Preferences"]
+git-tree-sha1 = "7e5d6779a1e09a36db2a7b6cff50942a0a7d0fca"
+uuid = "692b3bcd-3c85-4b1f-b108-f13ce0eb3210"
+version = "1.5.0"
+
+[[deps.Libdl]]
+uuid = "8f399da3-3557-5675-b5ff-fb832c97cbdb"
+
+[[deps.MacroTools]]
+deps = ["Markdown", "Random"]
+git-tree-sha1 = "2fa9ee3e63fd3a4f7a9a4f4744a52f4856de82df"
+uuid = "1914dd2f-81c6-5fcd-8719-6d5c9610ff09"
+version = "0.5.13"
+
+[[deps.Markdown]]
+deps = ["Base64"]
+uuid = "d6f4376e-aef5-505a-96c1-9c027394607a"
+
+[[deps.Preferences]]
+deps = ["TOML"]
+git-tree-sha1 = "9306f6085165d270f7e3db02af26a400d580f5c6"
+uuid = "21216c6a-2e73-6563-6e65-726566657250"
+version = "1.4.3"
+
+[[deps.Printf]]
+deps = ["Unicode"]
+uuid = "de0858da-6303-5e67-8744-51eddeeeb8d7"
+
+[[deps.Random]]
+deps = ["SHA"]
+uuid = "9a3f8284-a2c9-5f02-9a11-845980a1fd5c"
+
+[[deps.SHA]]
+uuid = "ea8e919c-243c-51af-8825-aaa63cd721ce"
+version = "0.7.0"
+
+[[deps.TOML]]
+deps = ["Dates"]
+uuid = "fa267f1f-6049-4f14-aa54-33bafae1ed76"
+version = "1.0.3"
+
+[[deps.Unicode]]
+uuid = "4ec0a83e-493e-50e2-b9ac-8f72acf5a8f5"
+
+[[deps.libcxxwrap_julia_jll]]
+deps = ["Artifacts", "JLLWrappers", "Libdl"]
+git-tree-sha1 = "0f10092db771939e29fd13a67967f5c63212fdfe"
+uuid = "3eaa8342-bff7-56a5-9981-c04077f7cee7"
+version = "0.12.3+0"

cxxwrap4/Project.toml

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+name = "MyCxxWrap4"
+uuid = "f679af86-966e-4c5a-832e-308363b94463"
+authors = ["Satoshi Terasaki <[email protected]>"]
+version = "0.1.0"
+
+[deps]
+CxxWrap = "1f15a43c-97ca-5a2a-ae31-89f07a497df4"
+Libdl = "8f399da3-3557-5675-b5ff-fb832c97cbdb"
+
+[extras]
+Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
+
+[targets]
+test = ["Test"]

cxxwrap4/README.md

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+# Usage
+
+```sh
+$ docker build -t cxxwrap4 .
+$ docker run --rm -it -v $PWD:/work -w /work cxxwrap4 bash -c 'julia --project -e "using Pkg; Pkg.build(); Pkg.test()"'
+```
+
+# Reference
+
+[my gist](https://gist.github.com/terasakisatoshi/b6a7121cd570f6739992345095b07d62)

cxxwrap4/deps/CMakeLists.txt

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+cmake_minimum_required(VERSION 3.15)
+project(cxxwrap3)
+add_subdirectory(src)

cxxwrap4/deps/build.jl

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+run(`bash build.sh`)

cxxwrap4/deps/build.sh

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+# Get Julia installation paths
+CXXWRAP_PREFIX=`julia --project -e 'using CxxWrap; CxxWrap.prefix_path() |> print'`
+rm -rf ./build
+cmake -S . -B ./build -DCMAKE_BUILD_TYPE=Release -DCMAKE_PREFIX_PATH=$CXXWRAP_PREFIX
+cmake --build ./build --config Release -j `nproc`

cxxwrap4/deps/src/CMakeLists.txt

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+find_package(JlCxx)
+find_package(Eigen3)
+get_target_property(JlCxx_location JlCxx::cxxwrap_julia LOCATION)
+get_filename_component(JlCxx_location ${JlCxx_location} DIRECTORY)
+
+add_library(hello SHARED hello.cpp)
+
+message(STATUS "Found JlCxx at ${JlCxx_location}")
+
+target_link_libraries(hello JlCxx::cxxwrap_julia JlCxx::cxxwrap_julia_stl ${Julia_LIBRARY} Eigen3::Eigen)

cxxwrap4/deps/src/hello.cpp

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+#include <string>
+#include "jlcxx/jlcxx.hpp"
+#include "jlcxx/stl.hpp"
+#include "jlcxx/array.hpp"
+#include <Eigen/Dense>
+auto twice(jlcxx::ArrayRef<double, 1> v){
+    static Eigen::VectorXd x;
+    x.resize(v.size());
+    for (int i = 0; i < v.size(); i++){
+      x[i] = v[i];
+    }
+    x = 2 * x;
+    return jlcxx::make_julia_array(x.data(), x.size());
+}
+
+JLCXX_MODULE define_julia_module(jlcxx::Module &mod) {
+  mod.method("twice", twice);
+}

cxxwrap4/src/MyCxxWrap4.jl

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+# Load the module and generate the functions
+module MyCxxWrap4
+using Libdl: dlext
+
+using CxxWrap
+@wrapmodule(() -> joinpath(pkgdir(@__MODULE__), "deps", "build", "src", "libhello.$(dlext)"))
+
+function __init__()
+    @initcxx
+end
+end

cxxwrap4/test/runtests.jl

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+using Test
+using MyCxxWrap4
+
+@testset "greet" begin
+	x = rand(10)
+	v= MyCxxWrap4.twice(x)
+	@test 2x == v
+end