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Teach the Makefile how to "build" the audio assets
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Makefiles are pretty strange things.

There is a new wildcard target which will copy any .ogg file from
"assets/" into "out/assets". On it's own, it does nothing -- it only
knows how to create the output file by copying the input one.

To drive this, a list of output assets must be created and depended upon
by the main build target(s). I don't want to manually maintain an asset
manifest in a Makefile, so I've achived this by wildcard matching
anything in the "assets/" folder, then rewriting the prefix to be
"out/assets/". This list is in a variable, which is now part of the
dependency list for the main build target(s). All files will be
installed, but only when they are out-of-date. Excellent.
This commit is contained in:
Robert Garrett
2025-12-19 10:55:57 -06:00
parent eecfbf5d7c
commit 72f062ea10
1 changed files with 13 additions and 4 deletions
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17
Makefile
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@@ -12,23 +12,26 @@ CARGO_PROFILE := tiny
SRC_DIR = ./src
SRCS := $(wildcard $(SRC_DIR)/**)
ASSET_SOURCE := $(wildcard assets/**)
ASSETS := $(patsubst assets/%.ogg, out/assets/%.ogg, $(ASSET_SOURCE))
.PHONY: clean full-clean tarball tarball-standalone web web-standalone
# "Standalone" version. It includes an index.html to serve as-is
web-standalone: out/asteroids.js out/asteroids_bg.wasm.gz out/index.html
web-standalone: out/asteroids.js out/asteroids_bg.wasm.gz out/index.html $(ASSETS)
# "Bundle-able" version. It has a page, but no index.html. Consumers are
# expected to provide their own index.html and link to this page.
web: out/asteroids.js out/asteroids_bg.wasm.gz out/asteroids.html
web: out/asteroids.js out/asteroids_bg.wasm.gz out/asteroids.html $(ASSETS)
tarball: asteroids_web_root.tar
tarball_standalone: asteroids_web_root_standalone.tar
asteroids_web_root.tar: out/asteroids.js out/asteroids_bg.wasm.gz out/asteroids.html
asteroids_web_root.tar: out/asteroids.js out/asteroids_bg.wasm.gz out/asteroids.html $(ASSETS)
tar -caf $@ $^
asteroids_web_root_standalone.tar: out/asteroids.js out/asteroids_bg.wasm.gz out/index.html
asteroids_web_root_standalone.tar: out/asteroids.js out/asteroids_bg.wasm.gz out/index.html $(ASSETS)
tar -caf $@ $^
target/$(CARGO_TARGET)/$(CARGO_PROFILE)/asteroids.wasm: $(SRCS) Cargo.lock Cargo.toml
@@ -37,6 +40,12 @@ target/$(CARGO_TARGET)/$(CARGO_PROFILE)/asteroids.wasm: $(SRCS) Cargo.lock Cargo
out:
mkdir $@
out/assets: out
mkdir $@
out/assets/%.ogg: out/assets assets/%.ogg
cp -ar assets/$*.ogg $@
# Both the JS and WASM files are generated by the wasm-bindgen call, so both
# get to be on the target half of this recipe.
out/asteroids.js out/asteroids_bg.wasm.gz &: target/$(CARGO_TARGET)/$(CARGO_PROFILE)/asteroids.wasm | out