build-aux/Makefile.am: Optional timestamping

Note that, because of the way this is implemented, the timestamps may become
mangled (multiple per line) for parallel builds.

Output can be prettied up in the future.

build-aux/Makefile.am

@@ -99,6 +99,12 @@ export TAMED_STALL_SECONDS
 TAMED_SPAWNER_PID=$(shell echo $$PPID)
 export TAMED_SPAWNER_PID
 
+# Optional timestamping for TAME commands
+TS_FMT=%s
+tame__ts_0 = :
+tame__ts_1 = @printf '[%($(TS_FMT))T] '
+TAME_TS = $(tame__ts_$(TS))
+
 all: program-data-copy
 
 # Building all common files is useful in a distributed pipeline so that
@@ -107,6 +113,11 @@ common: $(xmlo_common)
 
 program-ui: ui/package.strip.js ui/Program.js ui/html/index.phtml
 
+# Individual dependencies appear in suppliers.mk (see below)
+%.xmlo: %.xml
+	$(TAME_TS)
+	$(TAME) compile $< $@
+
 # Note the `$()' here to prevent Automake from inlining this file---it is
 # to be generated when imports change, which can be at any time.
 include $()suppliers.mk
@@ -114,13 +125,16 @@ include $()suppliers.mk
 summary-html: $(dest_summary_html) ;
 
 %.html: %.js %.xmle
+	$(TAME_TS)
 	$(TAME) summary $*.xmle $@
 
 standalones: $(dest_standalone)
 strip: $(dest_standalone_strip) ui/package.strip.js
 %.xmle: %.xmlo
+	$(TAME_TS)
 	$(TAME) link $< $@
 %.js: %.xmle
+	$(TAME_TS)
 	$(TAME) standalone $< $@
 %.strip.js: %.js
 	cp $< $@
@@ -130,8 +144,10 @@ strip: $(dest_standalone_strip) ui/package.strip.js
 c1map: $(dest_c1map)
 
 %.dot: %.xmlo
+	$(TAME_TS)
 	$(TAME) dot $< $@
 %.dote: %.xmle
+	$(TAME_TS)
 	$(TAME) dot $< $@
 
 %.svg: %.dote
@@ -164,16 +180,21 @@ version: .version.xml
 	git log HEAD^.. -1 --pretty=format:'<version>%h</version>' > .version.xml
 
 ui/program.expanded.xml: ui/program.xml $(program_fragments)
+	$(TAME_TS)
 	$(TAME) progui-expand $< $@
 ui/Program.js: ui/program.expanded.xml ui/package.js
+	$(TAME_TS)
 	$(TAME) progui-class $< $@ include-path=../../../ui/
 ui/html/index.phtml: ui/program.expanded.xml
+	$(TAME_TS)
 	$(TAME) progui-html $< $@ out-path=./
 ui/package-dfns.xmlo: ui/package-dfns.xml
 ui/package-dfns.xml: ui/program.expanded.xml
+	$(TAME_TS)
 	$(TAME) progui-pkg $< $@
 ui/package-map.xmlo: ui/package-map.xml ui/package-dfns.xmlo
 ui/package-map.xml: ui/program.expanded.xml ui/package-dfns.xml
+	$(TAME_TS)
 	$(TAME) progui-pkg-map $< $@
 
 # for the time being, this does not depend on clean-rate-tables because $(ant) will
@@ -298,6 +319,7 @@ test: check
 
 kill-tamed: tamed-die
 tamed-die:
+	$(TAME_TS)
 	$(TAME) --kill
 
 me-a-sandwich:

build-aux/gen-make

@@ -54,9 +54,6 @@ resolv-path()
 
 # rule for building
 [ -z "$GEN_MAKE" ] && {
-  echo "%.xmlo: %.xml"
-  echo -e '\t$(TAME) compile $< $@'
-
   export GEN_MAKE="$( pwd )/$0"
   exec "$GEN_MAKE" "$@"
 }