tree a26c786f284864d3bf0080a4d3ec16fe8bb18a50
parent b602daa6710dab61d8e1ca0cd3c44ac8a564fd9f
author Jason Evans <je@fb.com> 1300252992 -0700
committer Jason Evans <je@fb.com> 1300252992 -0700

Improve backtracing-related configuration.

Clean up configuration for backtracing when profiling is enabled, and
document the configuration logic in INSTALL.

Disable libgcc-based backtracing except on x64 (where it is known to
work).

Add the --disable-prof-gcc option.