Store id128-constants.h in the repository

Instead of generating the list of message ids anew during every build,
the file is generated manually and committed into the
repository. Also, the list of defines is stored in id128-defines.h,
also kept in the repository. Both files should only grow.

This should make build easier. But it also fixes a problem with
systemd, which occasionally drops message definitions. We will keep
them forever, so it should be safe to rely on the presence of message
definitions which systemd does not use anymore.

Fixes #23.

1 files changed, 13 insertions, 2 deletions

diff --git a/Makefile b/Makefile
index 0a5b2b9..dc5e78c 100644
--- a/Makefile
+++ b/Makefile
@@ -2,7 +2,7 @@ PYTHON = python
 SED = sed
 SPHINX_BUILD = sphinx-build
 ETAGS = etags
-INCLUDE_DIR = /usr/include/
+INCLUDE_DIR := $(shell pkg-config --variable=includedir libsystemd)
 VERSION := $(shell $(PYTHON) setup.py --version)
 TESTFLAGS = -v
 
@@ -15,6 +15,17 @@ builddir := $(shell $(PYTHON) -c '$(buildscript)')
 
 all: build
 
+.PHONY: update-constants
+update-constants: $(INCLUDE_DIR)/systemd/sd-messages.h
+	cat $< systemd/id128-defines.h | \
+	  $(SED) -n -r '/#define SD_MESSAGE_[A-Z0-9_]/p' | \
+	  sort -u | \
+	  tee systemd/id128-defines.h.tmp | \
+	  $(SED) -n -r 's/,//g; s/#define (SD_MESSAGE_[A-Z0-9_]+)\s.*/add_id(m, "\1", \1) JOINER/p' | \
+	  sort -u >systemd/id128-constants.h.tmp
+	mv systemd/id128-defines.h{.tmp,}
+	mv systemd/id128-constants.h{.tmp,}
+
 build:
 	$(PYTHON) setup.py build
 
@@ -28,7 +39,7 @@ clean:
 	rm -rf build systemd/*.so systemd/*.py[co] *.py[co] systemd/__pycache__
 
 distclean: clean
-	rm -rf dist MANIFEST systemd/id128-constants.h
+	rm -rf dist MANIFEST
 
 SPHINXOPTS = -D version=$(VERSION) -D release=$(VERSION)
 sphinx-%: build