more robust compression

scripts/Makefile.static

@@ -0,0 +1,17 @@
+SRCS = $(wildcard *.html *.xml *.txt *.css *.map *.pdf)
+
+ZSTD = $(patsubst %,%.zst,$(SRCS))
+BR = $(patsubst %,%.br,$(SRCS))
+GZ = $(patsubst %,%.gz,$(SRCS))
+
+.PHONY: all
+all: $(ZSTD) $(BR) $(GZ)
+
+%.br: %
+	brotli $<
+
+%.zst: %
+	zstd -19 $<
+
+%.gz: %
+	zopfli $<

scripts/build

@@ -4,13 +4,4 @@ cd "$(git rev-parse --show-toplevel)"
 
 hugo --cleanDestinationDir --printPathWarnings --panicOnWarning
 
-find public \
+find public -type d | xargs -P4 -n1 make -j4 -sf $PWD/scripts/Makefile.static -C
-    -name '*.html' -or \
-    -name '*.xml' -or \
-    -name '*.txt' -or \
-    -name '*.css' -or \
-    -name '*.map' -or \
-    -name '*.pdf' | \
-      tee >(xargs -n1 -P$(nproc) zopfli) | \
-      tee >(xargs -n1 -P$(nproc) zstd -19) | \
-      xargs -n1 -P$(nproc) brotli