add the wrapper demo version

Project.toml

+name = "SBML"
+uuid = "e5567a89-2604-4b09-9718-f5f78e97c3bb"
+authors = ["Mirek Kratochvil <exa.exa@gmail.com>"]
+version = "0.1.0"

README.md

-# SBML.jl
\ No newline at end of file
+# SBML.jl

libsbml-cxxwrapjl/.gitignore

+.*.swp
+*.o
+*.so
+/build

libsbml-cxxwrapjl/CMakeLists.txt

+
+project(sbml-cxxwrapjl)
+
+cmake_minimum_required(VERSION 3.18)
+
+set(CMAKE_MACOSX_RPATH 1)
+#TODO why? set(CMAKE_LIBRARY_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/lib")
+
+find_package(JlCxx REQUIRED)
+get_target_property(JlCxx_location JlCxx::cxxwrap_julia LOCATION)
+get_filename_component(JlCxx_location ${JlCxx_location} DIRECTORY)
+set(CMAKE_INSTALL_RPATH "${CMAKE_INSTALL_PREFIX}/lib;${JlCxx_location}")
+message(STATUS "Found JlCxx at ${JlCxx_location}")
+
+find_package(PkgConfig)
+
+pkg_check_modules(SBML libsbml REQUIRED)
+
+add_library(sbml-cxxwrapjl SHARED
+	src/cxxwrap.cpp
+	src/versions.cpp
+)
+
+target_include_directories(sbml-cxxwrapjl PUBLIC ${SBML_INCLUDEDIR})
+target_link_directories(sbml-cxxwrapjl PUBLIC ${SBML_LIBDIR})
+target_link_libraries(sbml-cxxwrapjl
+	${SBML_LIBRARIES}
+	JlCxx::cxxwrap_julia)

libsbml-cxxwrapjl/README.md

+
+# libSBML CxxWrap julia integration
+
+Dependencies:
+- libSBML installed in `SBMLPREFIX` (replace below)
+- `CxxWrap` package installed in Julia
+
+Compilation:
+```sh
+mkdir build; cd build
+
+PKG_CONFIG_PATH=$SBMLPREFIX/lib/pkgconfig cmake \
+  -DCMAKE_INSTALL_PREFIX=$SBMLPREFIX \
+  -DCMAKE_PREFIX_PATH=`julia -e 'using CxxWrap; println(CxxWrap.prefix_path());'` \
+  ..
+
+make
+```
+
+You can use `make install` to actually install it to the SBML prefix location,
+but the library can also be loaded right from the build directory.
+
+Loading from Julia:
+```julia
+module SBML
+  using CxxWrap
+  @wrapmodule("path-to-build/libsbml-cxxwrapjl.so")
+  function __init__()
+    @initcxx
+  end
+end
+```
+
+Usage from Julia:
+```julia
+julia> SBML.getLibSBMLDottedVersion()
+"5.19.0"
+```

libsbml-cxxwrapjl/src/cxxwrap.cpp

+
+#include "jlcxx/jlcxx.hpp"
+#include "versions.hpp"
+
+JLCXX_MODULE
+define_julia_module(jlcxx::Module &mod)
+{
+  define_sbml_versions(mod);
+}

libsbml-cxxwrapjl/src/style.sh

+#!/bin/sh
+cd `dirname $0`
+clang-format -style='{BasedOnStyle: Mozilla, AccessModifierOffset: -1, IndentCaseBlocks: false, PointerAlignment: Right}' -verbose -i *.cpp *.hpp

libsbml-cxxwrapjl/src/versions.cpp

+
+#include "versions.hpp"
+
+#include <sbml/SBMLTypes.h>
+#include <string>
+
+inline static std::string
+notnull_string(const char *s)
+{
+  if (s)
+    return std::string(s);
+  else
+    return std::string();
+}
+
+JLCXX_MODULE
+define_sbml_versions(jlcxx::Module &mod)
+{
+  mod.method("getLibSBMLDottedVersion",
+             []() -> std::string { return getLibSBMLDottedVersion(); });
+  mod.method("getLibSBMLVersionString",
+             []() -> std::string { return getLibSBMLVersionString(); });
+  mod.method("getLibSBMLVersion", []() { return getLibSBMLVersion(); });
+  mod.method("isLibSBMLCompiledWith", [](const std::string &s) -> bool {
+    return isLibSBMLCompiledWith(s.c_str());
+  });
+  mod.method("getLibSBMLDependencyVersionOf",
+             [](const std::string &s) -> std::string {
+               return notnull_string(getLibSBMLDependencyVersionOf(s.c_str()));
+             });
+}

libsbml-cxxwrapjl/src/versions.hpp

+#include "jlcxx/jlcxx.hpp"
+
+JLCXX_MODULE
+define_sbml_versions(jlcxx::Module &);

src/SBML.jl

+module SBML
+
+using CxxWrap
+
+# TODO: load the libsbml project from the BinaryBuilder destination
+@wrapmodule("./libsbml-cxxwrapjl.so")
+
+function __init__()
+  @initcxx
+end
+
+end # module