1 Ideas for things to do:
3 - more projects (compiler-rt libcxx libcxxabi libunwind clang-tools-extra lldb)
4 - phosek expressed interest in compiler-rt libcxx libcxxabi libunwind
5 - once there are more projects, have an llvm_enable_projects arg, modeled
6 after llvm_targets_to_build in the GN build
7 - a check-all build target that runs test of all projects
8 - more targets (AVR MIPS RISCV SystemZ etc)
9 - example: https://reviews.llvm.org/D56416
10 - investigate feasibility of working `gn check`
12 - "optimized tblgen" mode
13 - either just always build tablegen and support with opt config
14 - or use opt toolchain and build tablegen twice in debug builds, like cmake
16 - cross builds using GN's toolchain feature
17 - one-build-dir bootstrap builds using GN's toolchain feature
19 - move clang_tablegen into lib/ for private files
20 - add dead code stripping
21 - move run_tablegen.py from build to tablegen folder
22 - figure out why -Iclang/Support gets added so often
23 - make LLVM_LIBXML2_ENABLED use llvm_canonicalize_cmake_boolean (cf D28294),
24 clean up both GN and CMake builds
25 - plugin() template with working rpath, exports thingers
26 - then port clang_build_examples and enable by default so that clang
27 plugin tests run by default
28 - plugin_host() template