| 变量 | 值 | 说明 |
|---|---|---|
| DYLD_PRINT_STATISTICS | 1 | Print launch performance statistics 打印启动时间等参数 |
| DYLD_PRINT_SEGMENTS | 1 | Log segment mapping |
| DYLD_PRINT_INITIALIZERS | 1 | Log image initialization calls |
| DYLD_PRINT_BINDINGS | 1 | Log symbol bindings |
| DYLD_PRINT_APIS | 1 | Log dyld API calls (for example, dlopen) |
| DYLD_PRINT_ENV | 1 | Print launch-time environment variables |
| DYLD_PRINT_OPTS | 1 | Print launch-time command line arguments |
| DYLD_PRINT_LIBRARIES_POST_LAUNCH | 1 | Log library loads , but only after main has run |
| DYLD_PRINT_LIBRARIES | 1 | Log library loads |
| DYLD_IMAGE_SUFFIX | 1 | Search for libraries with this suffix first |
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