Build Time Improvements

Improving Build Times

Inspection Tools

• Doxygen for header dependency graphs
• clang++ with -ftime-trace for detailed analysis of build times for each compilation unit. Can be browsed by Chrome about::tracing

Attempts: Toolchain

All reported improvements are in full build times, unless indicated otherwise.

• Use ninja instead of make: 30% improvement
• Use ccache: Situational, but potentially very large
• Use gold linker: Maybe 5%

Attempts: Code

All reported improvements are in full build times, unless indicated otherwise.

• Extern templates: Insignificant, but will be more visible later
• Dynamic linking for Boost.Unit: No difference, but smaller test executables
• Remove stdexcept: Maybe 5%
• Forward declaration: Limited to own types, so insignificant.
• Move Exceptions library code to cpp: 5%
• Exception wrappers to remove exception headers from other headers: Insignificant