Module env

Statics

• NO_BG_THREAD_TARGETS
  jemalloc’s background_thread support is known not to work on these targets:
• NO_UNPREFIXED_MALLOC_TARGETS
  targets that don’t support unprefixed malloc
• UNSUPPORTED_TARGETS
  jemalloc is known not to work on these targets:
• UNTESTED_TARGETS
  jemalloc-sys is not tested on these targets in CI: