error when running "make bench"

[Joseph Myers]

On Thu, 16 Jan 2020, paul zimmermann wrote:

> thank you Szabolcs, this solved the problem.
> 
> However, I believe the issue is on the glibc side. Indeed, the
> bench-timing-type is linked with /tmp/lib/ld-linux-x86-64.so.2
> by the glibc Makefile, and that file doesn't exist if "make install"
> was not done (I configured with ./configure --prefix=/tmp).

The normal configuration people generally test with has --prefix=/usr.

However, what this indicates to me is that the call of $(timing-type) 
needs to use $(test-via-rtld-prefix).  Does this (untested) patch help in 
your configuration using --prefix=/tmp?


Run bench-timing-type with newly built libc.

benchtests/timing-type is built with the newly built libc, so should
be run with it like actual tests and benchmarks.

diff --git a/benchtests/Makefile b/benchtests/Makefile
index 99c3fae9bf..71b9565fed 100644
--- a/benchtests/Makefile
+++ b/benchtests/Makefile
@@ -217,7 +217,10 @@ bench-malloc: $(binaries-bench-malloc)
 # capable language or tool.
 bench-func: $(binaries-bench)
 	if [ -n '$^' ] ; then \
-	{ timing_type=$$($(timing-type)); \
+	{ timing_type=$$($(test-wrapper-env) \
+			 $(run-program-env) \
+			 $(test-via-rtld-prefix) \
+			 $(timing-type)); \
 	  echo "{\"timing_type\": \"$${timing_type}\","; \
 	  echo " \"functions\": {"; \
 	  for run in $^; do \

-- 
Joseph S. Myers
joseph@codesourcery.com