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Source code for C/C++ system libaries
=====================================
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).
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