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Diffstat (limited to 'HACKING/build-system.md')
| -rw-r--r-- | HACKING/build-system.md | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/HACKING/build-system.md b/HACKING/build-system.md new file mode 100644 index 0000000..40abd28 --- /dev/null +++ b/HACKING/build-system.md @@ -0,0 +1,20 @@ +The build system is built around an Automake-replacing Makefile +snippet system for GNU Make that I wrote, called Autothing. It is +documented in `build-aux/Makfile.README.txt`. It provides all of the +standard targets and such; you tell it what to do by setting a series +of `at.whatever` or `std.whatever` variables. + +There are a couple of variables that get automatically set from git. +This happens by `include`ing a hidden makefile that sets them; if +`$(topsrcdir)/.git` exists, it knows to use git to generate it; +otherwise it expects the file to exist: + +| variable | file | +|--------------------+----------------------------------------| +| srcfiles | $(srcdir)/.srcfiles.mk | +| LIBRETOOLS_VERSION | $(topsrcdir)/.srcversion-libretools.mk | +| LIBRETOOLS_COMMIT | $(topsrcdir)/.srcversion-libretools.mk | +| DEVTOOLS_VERSION | $(topsrcdir)/.srcversion-devtools.mk | +| DEVTOOLS_COMMIT | $(topsrcdir)/.srcversion-devtools.mk | + +`srcfiles` basically becomes `std.src_files`. |