diff options
Diffstat (limited to 'meson/test cases/cmake/21 shared module/subprojects')
3 files changed, 106 insertions, 0 deletions
diff --git a/meson/test cases/cmake/21 shared module/subprojects/cmMod/CMakeLists.txt b/meson/test cases/cmake/21 shared module/subprojects/cmMod/CMakeLists.txt new file mode 100644 index 000000000..d2fcfe3ff --- /dev/null +++ b/meson/test cases/cmake/21 shared module/subprojects/cmMod/CMakeLists.txt @@ -0,0 +1,7 @@ +cmake_minimum_required(VERSION 3.5) + +project(cmModule) + +include_directories("${CMAKE_CURRENT_SOURCE_DIR}/module") + +add_library(myMod MODULE "${CMAKE_CURRENT_SOURCE_DIR}/module/module.c") diff --git a/meson/test cases/cmake/21 shared module/subprojects/cmMod/module/module.c b/meson/test cases/cmake/21 shared module/subprojects/cmMod/module/module.c new file mode 100644 index 000000000..5dd26d7ef --- /dev/null +++ b/meson/test cases/cmake/21 shared module/subprojects/cmMod/module/module.c @@ -0,0 +1,96 @@ +#if defined _WIN32 || defined __CYGWIN__ + #define DLL_PUBLIC __declspec(dllexport) +#else + #if defined __GNUC__ + #define DLL_PUBLIC __attribute__ ((visibility("default"))) + #else + #pragma message ("Compiler does not support symbol visibility.") + #define DLL_PUBLIC + #endif +#endif + +#if defined(_WIN32) || defined(__CYGWIN__) + +#include <stdio.h> + +typedef int (*fptr) (void); + +#ifdef __CYGWIN__ + +#include <dlfcn.h> + +fptr find_any_f (const char *name) { + return (fptr) dlsym(RTLD_DEFAULT, name); +} +#else /* _WIN32 */ + +#include <windows.h> +#include <tlhelp32.h> + +static wchar_t* +win32_get_last_error (void) +{ + wchar_t *msg = NULL; + + FormatMessageW (FORMAT_MESSAGE_ALLOCATE_BUFFER + | FORMAT_MESSAGE_IGNORE_INSERTS + | FORMAT_MESSAGE_FROM_SYSTEM, + NULL, GetLastError (), 0, + (LPWSTR) &msg, 0, NULL); + return msg; +} + +/* Unlike Linux and OS X, when a library is loaded, all the symbols aren't + * loaded into a single namespace. You must fetch the symbol by iterating over + * all loaded modules. Code for finding the function from any of the loaded + * modules is taken from gmodule.c in glib */ +fptr find_any_f (const char *name) { + fptr f; + HANDLE snapshot; + MODULEENTRY32 me32; + + snapshot = CreateToolhelp32Snapshot (TH32CS_SNAPMODULE, 0); + if (snapshot == (HANDLE) -1) { + wchar_t *msg = win32_get_last_error(); + printf("Could not get snapshot: %S\n", msg); + return 0; + } + + me32.dwSize = sizeof (me32); + + f = NULL; + if (Module32First (snapshot, &me32)) { + do { + if ((f = (fptr) GetProcAddress (me32.hModule, name)) != NULL) + break; + } while (Module32Next (snapshot, &me32)); + } + + CloseHandle (snapshot); + return f; +} +#endif + +int DLL_PUBLIC func(void) { + fptr f; + + f = find_any_f ("func_from_language_runtime"); + if (f != NULL) + return f(); + printf ("Could not find function\n"); + return 1; +} + +#else +/* + * Shared modules often have references to symbols that are not defined + * at link time, but which will be provided from deps of the executable that + * dlopens it. We need to make sure that this works, i.e. that we do + * not pass -Wl,--no-undefined when linking modules. + */ +int func_from_language_runtime(void); + +int DLL_PUBLIC func(void) { + return func_from_language_runtime(); +} +#endif diff --git a/meson/test cases/cmake/21 shared module/subprojects/cmMod/module/module.h b/meson/test cases/cmake/21 shared module/subprojects/cmMod/module/module.h new file mode 100644 index 000000000..e1d9c1397 --- /dev/null +++ b/meson/test cases/cmake/21 shared module/subprojects/cmMod/module/module.h @@ -0,0 +1,3 @@ +#pragma once + +#define SPECIAL_MAGIC_DEFINE 42 |