Every C command and flag for Grok16 @ 16.1.1. Use g16 only — it detects .c / -std=gnu17 and runs g16-cc.
| # | Item | Short | Detail |
|---|---|---|---|
| 1 | g16 | Unified driver | Single ELF at bin/g16. Inspects argv[0], -std=, -x, and source extensions (.c vs .cpp). Dispatches to libexec/grok16/g16-cc for C. No separate C command — always g16. |
| 2 | g16-cc | C backend | Relocated GCC C driver after install. Real ELF from upstream program-transform. Unified g16 execv() here when C mode is detected. |
| 3 | g16 -std=gnu17 | Default C standard | G16_C_STD defaults to gnu17 (C17 + GNU extensions). Applied when compiling .c files or when -std=gnu17|c17|… is passed. Override per translation unit. |
| 4 | verify (C leg) | C smoke compile | grok16-toolchain.sh verify compiles verify.c with g16 -std=${G16_C_STD}. Proves unified driver reaches g16-cc and frontend accepts gnu17. |
| 5 | PROFILE c | C compile flags | pythong grok16-profile-flags.py field_opt c — emits -std=gnu17 -O3 -march=native plus profile -D macros. Use for C kernels and L0 glue. |
| 6 | PROFILE c_link | C link flags | Same link_flags as CXX profiles (LTO/OpenMP). Unified g16 still auto-selects g16-cc for link when inputs are C-only. |
| 7 | PROFILE c_pgo_gen | C PGO generate | Adds -fprofile-generate=${GROK16_ROOT}/data/pgo to C flags. Run profile command, then rebuild consumers with G16_ENABLE_PGO=1. |
| 8 | PROFILE c_pgo_use | C PGO use | Adds -fprofile-use for C builds after training. Pairs with cxx_pgo_use for mixed projects. |
| 9 | G16_C_STD | C standard env | Exported by grok16-config.sh from data/grok16-version.json. Default gnu17. Used by verify, CMake GROK16_C_STD, and manual g16 invocations. |
| 10 | G16_FORCE_C=1 | Force C backend | Override detection — unified g16 always execs g16-cc even for .cpp (debug only). |
| 11 | bootstrap | First build | Fetch GCC 15, patch BASE-VER 16.1.1, host-build, install, relocate backends, install unified g16. Produces working C path without separate gcc binary name. |
| 12 | rebuild | Self-host | Self-host uses libexec/g16-cc and g16-cxx as CC/CXX during gcc_rebuild — not the unified wrapper — avoiding bootstrap recursion. |
| 13 | install | Post-install | Regenerates VERSION, cmake, manifest. Confirms g16 -dumpversion == 16.1.1. Re-runs driver/Makefile install if present. |
| 14 | paths | Paths dump | Prints G16_DRIVER, G16_BACKEND_CC, G16_C_STD, GROK16_ROOT, G16_PREFIX. Use before scripting C builds. |
| 15 | bench (C future) | C benchmarks | 16.1.1 benches remain CXX-first; C flags available via PROFILE c for mixed stacks. Add examples/minimal-c-project to CI smoke. |
| 16 | build-cpp.sh | WRDT L2 | World_Redata C++ engine; C sources in redata use host python. Grok16 C path validates toolchain for embedded .c in future L2 splits. |
| 17 | libexec/grok16/ | Backend dir | g16-cc and g16-cxx live here after relocate. Marker .relocated prevents double-move on reinstall. |