| Source code for C/C++ system libraries | |
| ====================================== | |
| This directory contains the source code for libc, libc++ and other C/C++ system | |
| libraries. Where possible these are clones of upstream projects (e.g. musl). | |
| For more details about each library see the individual readme files in the | |
| subdirectories. | |
| Static constructor ordering | |
| --------------------------- | |
| These are several static constructors in the emscripten system libraries and they | |
| are in a specific order. When adding/remove/updating these please update this | |
| document. | |
| These current set of static constructors in system libraries and their priorities | |
| (lowest run first) are: | |
| - 1: `emscripten_stack_init` (stack_limits.S) | |
| - 47: `initialize_emmalloc_heap` (emmalloc.c) | |
| - 48: `__emscripten_init_main_thread` (pthread/library_pthread.c) | |
| - 49: `init_file_data` (generated by file_packager.py) | |
| - 50: asan init (??) | |
| - 100: `WasmFS wasmFS` (wasmfs/wasmfs.cpp) | |
| Priorities 0 - 100 are reserved for system libraries and user-level | |
| constructors should all run at 101 and above (for example libc++ initializes | |
| its standard I/O streams at priority 101). | |