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[PATCH] 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.  I'll push this tomorrow if there are no objections. (bench-build): New target.
	Rules (PHONY): Add bench-build target.
	benchtests/Makefile (bench): Depend on bench-build.
	(bench-build): New target.
---         | 2 +-
 Rules               | 2 +-
 benchtests/Makefile | 5 ++++-
 3 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/ b/
index 710ce7e..3fe9e73 100644
--- a/
+++ b/
@@ -12,7 +12,7 @@ install:
 	LC_ALL=C; export LC_ALL; \
 	$(MAKE) -r PARALLELMFLAGS="$(PARALLELMFLAGS)" -C $(srcdir) objdir=`pwd` $@
-bench bench-clean:
+bench bench-clean bench-build:
 	$(MAKE) -C $(srcdir)/benchtests $(PARALLELMFLAGS) objdir=`pwd` $@
 # Convenience target to rebuild ULPs for all math tests.
diff --git a/Rules b/Rules
index d8093b3..8306d36 100644
--- a/Rules
+++ b/Rules
@@ -83,7 +83,7 @@ common-generated += dummy.o dummy.c
 # This makes all the auxiliary and test programs.
-.PHONY: others tests bench
+.PHONY: others tests bench bench-build
 ifeq ($(build-programs),yes)
 others: $(addprefix $(objpfx),$(others) $(sysdep-others) $(extra-objs))
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 \

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