New make target to only build benchmark binaries

For situations where we are cross-building or where we want to avoid
building on the target system, we want a way to only build benchmarks
and then copy them over to the target system to run them.  I have also
added a simple enhancement for the 'bench' target where all benchmark
binaries are built and then the benchmarks executed.

Tested on arm.

	Makefile.in (bench-build): New target.
	Rules (PHONY): Add bench-build target.
	benchtests/Makefile (bench): Depend on bench-build.
	(bench-build): New target.

1 files changed, 4 insertions, 1 deletions

diff --git a/benchtests/Makefile b/benchtests/Makefile
index 61077ea..a05974e 100644
--- a/benchtests/Makefile
+++ b/benchtests/Makefile
@@ -128,7 +128,10 @@ bench-clean:
 	rm -f $(binaries-bench-malloc) $(addsuffix .o,$(binaries-bench-malloc))
 	rm -f $(timing-type) $(addsuffix .o,$(timing-type))
 
-bench: $(timing-type) $(gen-locales) bench-set bench-func bench-malloc
+bench: $(timing-type) $(gen-locales) bench-build bench-set bench-func \
+	bench-malloc
+# Target to only build the benchmark without running it.
+bench-build: $(binaries-bench) $(binaries-benchset) $(binaries-bench-malloc)
 
 bench-set: $(binaries-benchset)
 	for run in $^; do \