配套“编译v8引擎”文章使用

#include <stdio.h> #include <stdlib.h> #if defined(PLATFORM_WIN) #include <windows.h> #elif defined(PLATFORM_MAC) || defined(PLATFORM_LINUX) #include <dlfcn.h> #include <libgen.h> #include <string.h> #include <sys/param.h> #define MAX_PATH PATH_MAX #endif #if defined(PLATFORM_WIN) #define MODULE_SUFFIX ".dll" #elif defined(PLATFORM_MAC) #define MODULE_SUFFIX ".so" #elif defined(PLATFORM_LINUX) #define MODULE_SUFFIX ".so" #endif typedef void (*module_symbol)(void); char bin_path[MAX_PATH + 1]; void CallModule(const char* module) { char module_path[MAX_PATH + 1]; const char* module_function = "module_main"; module_symbol funcptr; #if defined(PLATFORM_WIN) HMODULE dl; char drive[_MAX_DRIVE]; char dir[_MAX_DIR]; if (_splitpath_s(bin_path, drive, _MAX_DRIVE, dir, _MAX_DIR, NULL, 0, NULL, 0)) { fprintf(stderr, "Failed to split executable path.\n"); return; } if (_makepath_s(module_path, MAX_PATH, drive, dir, module, MODULE_SUFFIX)) { fprintf(stderr, "Failed to calculate module path.\n"); return; } dl = LoadLibrary(module_path); if (!dl) { fprintf(stderr, "Failed to open module: %s\n", module_path); return; } funcptr = (module_symbol) GetProcAddress(dl, module_function); if (!funcptr) { fprintf(stderr, "Failed to find symbol: %s\n", module_function); return; } funcptr(); FreeLibrary(dl); #elif defined(PLATFORM_MAC) || defined(PLATFORM_LINUX) void* dl; char* path_copy = strdup(bin_path); char* bin_dir = dirname(path_copy); int path_size = snprintf(module_path, MAX_PATH, "%s/%s%s", bin_dir, module, MODULE_SUFFIX); free(path_copy); if (path_size < 0 || path_size > MAX_PATH) { fprintf(stderr, "Failed to calculate module path.\n"); return; } module_path[path_size] = 0; dl = dlopen(module_path, RTLD_LAZY); if (!dl) { fprintf(stderr, "Failed to open module: %s\n", module_path); return; } funcptr = dlsym(dl, module_function); if (!funcptr) { fprintf(stderr, "Failed to find symbol: %s\n", module_function); return; } funcptr(); dlclose(dl); #endif } int main(int argc, char *argv[]) { fprintf(stdout, "Hello from program.c\n"); fflush(stdout); #if defined(PLATFORM_WIN) if (!GetModuleFileName(NULL, bin_path, MAX_PATH)) { fprintf(stderr, "Failed to determine executable path.\n"); return 1; } #elif defined(PLATFORM_MAC) || defined(PLATFORM_LINUX) // Using argv[0] should be OK here since we control how the tests run, and // can avoid exec and such issues that make it unreliable. if (!realpath(argv[0], bin_path)) { fprintf(stderr, "Failed to determine executable path (%s).\n", argv[0]); return 1; } #endif CallModule("lib1"); CallModule("lib2"); return 0; }