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build: minify the web files only when they change

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html_min was phony, so every make deleted output/html_min and minified
all of html/ again, even with nothing changed. A stamp file now stands for
the minified copy and depends on the sources and on minify.py. A list of
the source names, rewritten only when it changes, is a dependency too, so
adding or removing a file in html/ still redoes the copy and a removed
file does not stay behind in the image. If output/html_min is missing,
the stamp is remade in the same run.

The note on version.h in webui-compression.md still said it was phony.
This commit is contained in:
DrDoof authored and d00f committed 2026-10-25 03:11:03 +01:00
1 parent 53eb3f5486
commit 337b171ac4
2 files changed
+19 -6
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Makefile
+14 -4
View File
@@ -145,13 +145,23 @@ HTML := $(shell find html -name '*.js' -or -name '*.html' -or -name '*.svg' -or
# The raw html/ sources stay untouched for development; the minified
# copy is a build artifact under output/.
HTML_MIN := $(BUILDDIR)/html_min
HTML_MIN_LIST := $(BUILDDIR)/html_min.list
HTML_MIN_STAMP := $(BUILDDIR)/html_min.stamp
.PHONY: html_min
html_min: $(HTML)
html_min: $(HTML_MIN_STAMP)
$(HTML_MIN_LIST): FORCE
@mkdir -p $(BUILDDIR)
@echo $(sort $(HTML)) > $@.tmp
@cmp -s $@.tmp $@ && rm -f $@.tmp || mv $@.tmp $@
$(HTML_MIN_STAMP): $(HTML) $(HTML_MIN_LIST) tools/minify.py $(if $(wildcard $(HTML_MIN)),,FORCE)
rm -rf $(HTML_MIN)
mkdir -p $(HTML_MIN)
@for f in $(HTML); do python3 tools/minify.py $$f $(HTML_MIN)/$$(basename $$f) || exit 1; done
@touch $@
html_data.c html_data.h &: $(HTML) | tools html_min
html_data.c html_data.h &: $(HTML_MIN_STAMP) | tools
tools/$(BUILDDIR)/fileadder -a $(HTML_LOCATION) -s $(IMAGESIZE) -b BANK1 -z -d $(HTML_MIN) -p html_data
$(VERSION_HEADER): FORCE
@@ -169,11 +179,11 @@ $(SUBDIRS):
$(MAKE) -C $@ BUILDDIR=$(BUILDDIR)
clean: $(SUBDIRSCLEAN)
-rm -f html_data.c html_data.h $(VERSION_HEADER)
-rm -f html_data.c html_data.h $(VERSION_HEADER) $(HTML_MIN_LIST) $(HTML_MIN_STAMP)
-if [ -d $(BUILDDIR) ]; then find $(BUILDDIR) -type f ! -name "*.bin" -delete; fi
distclean: $(SUBDIRSCLEAN)
-rm -f html_data.c html_data.h $(VERSION_HEADER)
-rm -f html_data.c html_data.h $(VERSION_HEADER) $(HTML_MIN_LIST) $(HTML_MIN_STAMP)
-rm -rf $(BUILDDIR)
$(SUBDIRSCLEAN):
doc/webui-compression.md
+5 -2
View File
@@ -79,8 +79,11 @@ JSON polling of the visible section).
computation no longer depends on uninitialised buffer content.
- `version.h` is now written by a single atomic `printf` (change from
upstream) instead of five separate `echo`s, so a parallel build
(`make -j`) can no longer read a half-written copy. It stays in
`.PHONY` so it is regenerated on every build.
(`make -j`) can no longer read a half-written copy. It depends on
`FORCE`, so its recipe runs on every build, but the file is only
rewritten when its content changes. The minified copy in
`output/html_min/` is redone only when a web file, the list of web
files or `tools/minify.py` changes.
## Verification