Task #5141
Updated by Davide Pesavento over 3 years ago
Clang 11 added `-fpch-instantiate-templates`, `-fpch-codegen`, and `-fpch-debuginfo` which should reduce compilation times even further. The first flag should be relatively easy to add, the other two require a little more logic in the build system. See also https://gitlab.kitware.com/cmake/cmake/-/issues/21133 I did a quick test _with_ `-fpch-instantiate-templates` in `.waf-tools/pch.py` and got the following for a regular release build of ndn-cxx without tests: ``` $ time ./waf [...] real 1m49.442s user 6m35.699s sys 0m20.976s ``` While this is what I get with PCH but _without_ `-fpch-instantiate-templates`: ``` $ time ./waf [...] real 2m0.835s user 7m24.424s sys 0m23.070s ```