Commit aabcf981 authored by Brad King's avatar Brad King

ENH: Added test for executables with plugins that use an API exported by the executable itself.

parent c50dabff
PROJECT(Plugin)
# Test per-target output directory properties.
SET(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${Plugin_BINARY_DIR}/bin)
SET(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${Plugin_BINARY_DIR}/lib/plugin)
SET(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${Plugin_BINARY_DIR}/lib/static)
# We need the dynamic loader support from KWSys to load the plugin in
# the executable.
SET(KWSYS_NAMESPACE kwsys)
SET(KWSYS_HEADER_ROOT ${Plugin_BINARY_DIR}/include)
SET(KWSYS_USE_DynamicLoader 1)
ADD_SUBDIRECTORY(${Plugin_SOURCE_DIR}/../../Source/kwsys src/kwsys)
INCLUDE_DIRECTORIES(
${Plugin_BINARY_DIR}/include
${Plugin_SOURCE_DIR}/include
)
# Create an executable that exports an API for use by plugins.
ADD_EXECUTABLE(example_exe src/example_exe.cxx)
SET_TARGET_PROPERTIES(example_exe PROPERTIES
ENABLE_EXPORTS 1
OUTPUT_NAME example
)
TARGET_LINK_LIBRARIES(example_exe kwsys)
# Create a plugin that uses the API provided by the executable.
# This module "links" to the executable to use the symbols.
ADD_LIBRARY(example_mod_1 MODULE src/example_mod_1.c)
TARGET_LINK_LIBRARIES(example_mod_1 example_exe)
# TODO:
# - create a plugin that links to a static lib
# - create a plugin that links to a shared lib
#ifndef example_h
#define example_h
#if defined(_WIN32)
# if defined(example_exe_EXPORTS)
# define EXAMPLE_EXPORT __declspec(dllexport)
# else
# define EXAMPLE_EXPORT __declspec(dllimport)
# endif
#else
# define EXAMPLE_EXPORT
#endif
#ifdef __cplusplus
extern "C"
{
#endif
EXAMPLE_EXPORT int example_exe_function(void);
#ifdef __cplusplus
}
#endif
#endif
#include <example.h>
#include <kwsys/DynamicLoader.hxx>
#include <kwsys/ios/iostream>
#include <kwsys/stl/string>
#include <stdio.h>
// Implement the ABI used by plugins.
extern "C" int example_exe_function()
{
kwsys_ios::cout << "hello" << kwsys_ios::endl;
return 123;
}
#ifdef CMAKE_INTDIR
# define CONFIG_DIR "/" CMAKE_INTDIR
#else
# define CONFIG_DIR ""
#endif
int main()
{
kwsys_stl::string libName = "lib/plugin" CONFIG_DIR "/";
libName += kwsys::DynamicLoader::LibPrefix();
libName += "example_mod_1";
libName += kwsys::DynamicLoader::LibExtension();
kwsys::DynamicLoader::LibraryHandle handle =
kwsys::DynamicLoader::OpenLibrary(libName.c_str());
if(!handle)
{
kwsys_ios::cerr << "Could not open plugin \""
<< libName << "\"!" << kwsys_ios::endl;
return 1;
}
kwsys::DynamicLoader::SymbolPointer sym =
kwsys::DynamicLoader::GetSymbolAddress(handle, "example_mod_1_function");
if(!sym)
{
kwsys_ios::cerr
<< "Could not get plugin symbol \"example_mod_1_function\"!"
<< kwsys_ios::endl;
return 1;
}
int(*f)() = reinterpret_cast<int(*)()>(sym);
if(f() != (123+456))
{
kwsys_ios::cerr << "Incorrect return value from plugin!"
<< kwsys_ios::endl;
return 1;
}
return 0;
}
#include <example.h>
#include <stdio.h>
#if defined(_WIN32)
# define MODULE_EXPORT __declspec(dllexport)
#else
# define MODULE_EXPORT
#endif
MODULE_EXPORT int example_mod_1_function()
{
int result = example_exe_function() + 456;
printf("world\n");
return result;
}
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