add cxxwrap2

cxxwrap2/.gitignore

@@ -0,0 +1 @@
+libhello*

cxxwrap2/CMakeLists.txt

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+cmake_minimum_required(VERSION 3.15)
+project(cxxwrap2)
+# https://github.com/JuliaInterop/libcxxwrap-julia/blob/main/CMakeLists.txt
+# https://github.com/JuliaInterop/libcxxwrap-julia/blob/main/testlib-builder/src/testlib/CMakeLists.txt
+find_package(JlCxx)
+get_target_property(JlCxx_location JlCxx::cxxwrap_julia LOCATION)
+get_filename_component(JlCxx_location ${JlCxx_location} DIRECTORY)
+
+add_library(hello SHARED hello.cpp)
+
+message("-- AAA" ${Julia_LIBRARY})
+message(STATUS "Found JlCxx at ${JlCxx_location}")
+message("-- BBB" ${JLCXX_TARGET} JlCxx::cxxwrap_julia)
+
+target_link_libraries(hello JlCxx::cxxwrap_julia ${Julia_LIBRARY})

cxxwrap2/Dockerfile

@@ -0,0 +1,6 @@
+FROM julia:1.10.3
+
+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()'

cxxwrap2/Manifest.toml

@@ -0,0 +1,86 @@
+# This file is machine-generated - editing it directly is not advised
+
+julia_version = "1.10.3"
+manifest_format = "2.0"
+project_hash = "3cef41461bc070f5890a35a6516e3e4c0caa014a"
+
+[[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.InteractiveUtils]]
+deps = ["Markdown"]
+uuid = "b77e0a4c-d291-57a0-90e8-8db25a27a240"
+
+[[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.Logging]]
+uuid = "56ddb016-857b-54e1-b83d-db4d58db5568"
+
+[[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.Serialization]]
+uuid = "9e88b42a-f829-5b0c-bbe9-9e923198166b"
+
+[[deps.TOML]]
+deps = ["Dates"]
+uuid = "fa267f1f-6049-4f14-aa54-33bafae1ed76"
+version = "1.0.3"
+
+[[deps.Test]]
+deps = ["InteractiveUtils", "Logging", "Random", "Serialization"]
+uuid = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
+
+[[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"

cxxwrap2/Project.toml

@@ -0,0 +1,4 @@
+[deps]
+CxxWrap = "1f15a43c-97ca-5a2a-ae31-89f07a497df4"
+Libdl = "8f399da3-3557-5675-b5ff-fb832c97cbdb"
+Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"

cxxwrap2/README.md

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+# Usage
+
+```
+$ docker build -t cxxwrap2 .
+$ docker run --rm -it -v $PWD:/work -w /work cxxwrap2 bash -c 'bash build.sh && julia callcxx.jl'
+```
+
+# Reference
+
+[my gist](https://gist.github.com/terasakisatoshi/b6a7121cd570f6739992345095b07d62)

cxxwrap2/build.sh

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+# Detect operating system
+OS_TYPE=$(uname -s)
+
+# Set shared library extension based on OS
+if [[ $OS_TYPE == "Linux" ]]; then
+  SHARED_LIB_EXT=".so"
+elif [[ $OS_TYPE == "Darwin" ]]; then
+  SHARED_LIB_EXT=".dylib"
+else
+  echo "Unsupported operating system: $OS_TYPE"
+  exit 1
+fi
+
+# Get Julia installation paths
+JULIA_PREFIX=`julia --project -e 'joinpath(Sys.BINDIR, "..") |> abspath |> print'`
+CXXWRAP_PREFIX=`julia --project -e 'using CxxWrap; CxxWrap.prefix_path() |> print'`
+cmake -S . -B ./build -DCMAKE_BUILD_TYPE=Release -DJulia_PREFIX=$JULIA_PREFIX -DCMAKE_PREFIX_PATH=$CXXWRAP_PREFIX
+cmake --build ./build --config Release -j `nproc`
+
+# Build shared library with appropriate extension
+#g++ -fPIC -shared -std=c++17 \
+#  -I${CXXWRAP_PREFIX}/include/ \
+#  -L${CXXWRAP_PREFIX}/lib/ \
+#  -I${JULIA_PREFIX}/include/julia \
+#  -L${JULIA_PREFIX}/lib \
+#  -ljulia -lcxxwrap_julia hello.cpp -o libhello${SHARED_LIB_EXT}

cxxwrap2/callcxx.jl

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+using Test
+
+# Load the module and generate the functions
+module CppHello
+using Libdl: dlext
+
+using CxxWrap
+@wrapmodule(() -> joinpath("./build", "libhello.$(dlext)"))
+
+function __init__()
+    @initcxx
+end
+end
+
+@testset "greet" begin
+    # Call greet and show the result
+    @test CppHello.greet("Hello World") == "Hello World"
+end

cxxwrap2/hello.cpp

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+#include <string>
+
+#include "jlcxx/jlcxx.hpp"
+
+std::string greet(std::string msg)
+{
+   return msg;
+}
+
+JLCXX_MODULE define_julia_module(jlcxx::Module& mod)
+{
+  mod.method("greet", &greet);
+}