/* Hide all symbols except a few required ones.
 *
 * Otherwise LLVM symbols conflict with Mesa llvm pipe, boost symbols conflict
 * with Luxrender, etc. */
{
global:
  /* Essential symbols for the program to start and exit. */
  _fini;
  _init;
  /* Needed for Python modules to work. */
  Py*;
  _Py*;
  /* Needed for sanitizers. Based on:
   * llvm/compiler-rt/lib/sanitizer_common/scripts/gen_dynamic_list.py. */
  __asan*;
  __lsan*;
  __tsan*;
  __ubsan*;
  __sanitizer*;
  /* Memory allocation (new, delete, malloc). */
  __Znw*;
  __Zna*;
  __Zdl*;
  __Zda*;
  aligned_alloc*;
  calloc*;
  free*;
  mallinfo*;
  malloc*;
  mallopt*;
  memalign*;
  memcpy*;
  posix_memalign*;
  pthread_*;
  pvalloc*;
  realloc*;
  realpath*;
  sched_*;
  valloc*;
  /* Needed on FreeBSD. Uses wildcard to avoid linker error when symbols are not found. */
  __progname*;
  environ*;
local:
  *;
};