Build-only sources

[sciurius]

From the docs:

There is also amalgamated source provided with HarfBuzz which reduces whole process of building HarfBuzz to g++ src/harfbuzz.cc -fno-exceptions but there is no guarantee provided with buildability and reliability of features you get.

Is there a list of sources that are actually needed for this 'reduced building'?

Rationale: I package the harfbuzz sources with a perl module for those systems that do not have a native harfbuzz installed, and I want to omit sources that are not really needed to reduce the package size.

[behdad]

Read CONFIG.md.