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bb9c256fb0
Using -lm and -lpthread results in the shared objects in the system being used to link against. This happened to work for libm because there haven't been any changes to the libm ABI recently that could break the existing benchmarks. This doesn't always work for the pthread benchmarks. The correct way to build against libraries in the build directory is to have the binaries explicitly depend on them so that $(+link) can pick them up.
147 lines
4.5 KiB
Makefile
147 lines
4.5 KiB
Makefile
# Copyright (C) 2013-2014 Free Software Foundation, Inc.
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# This file is part of the GNU C Library.
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# The GNU C Library is free software; you can redistribute it and/or
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# modify it under the terms of the GNU Lesser General Public
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# License as published by the Free Software Foundation; either
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# version 2.1 of the License, or (at your option) any later version.
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# The GNU C Library is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# Lesser General Public License for more details.
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# You should have received a copy of the GNU Lesser General Public
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# License along with the GNU C Library; if not, see
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# <http://www.gnu.org/licenses/>.
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# Makefile for benchmark tests. The only useful target here is `bench`.
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# Add benchmark functions in alphabetical order.
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subdir := benchtests
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include ../Makeconfig
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bench-math := acos acosh asin asinh atan atanh cos cosh exp exp2 ffs ffsll \
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log log2 modf pow rint sin sincos sinh sqrt tan tanh
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bench-pthread := pthread_once
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bench := $(bench-math) $(bench-pthread)
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# String function benchmarks.
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string-bench := bcopy bzero memccpy memchr memcmp memcpy memmem memmove \
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mempcpy memset rawmemchr stpcpy stpncpy strcasecmp strcasestr \
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strcat strchr strchrnul strcmp strcpy strcspn strlen \
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strncasecmp strncat strncmp strncpy strnlen strpbrk strrchr \
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strspn strstr strcpy_chk stpcpy_chk memrchr strsep strtok
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string-bench-all := $(string-bench)
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stdlib-bench := strtod
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benchset := $(string-bench-all) $(stdlib-bench)
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CFLAGS-bench-ffs.c += -fno-builtin
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CFLAGS-bench-ffsll.c += -fno-builtin
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$(addprefix $(objpfx)bench-,$(bench-math)): $(common-objpfx)math/libm.so
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$(addprefix $(objpfx)bench-,$(bench-pthread)): \
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$(common-objpfx)nptl/libpthread.so
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# Rules to build and execute the benchmarks. Do not put any benchmark
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# parameters beyond this point.
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# We don't want the benchmark programs to run in parallel since that could
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# affect their performance.
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.NOTPARALLEL:
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include ../Rules
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binaries-bench := $(addprefix $(objpfx)bench-,$(bench))
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binaries-benchset := $(addprefix $(objpfx)bench-,$(benchset))
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# The default duration: 10 seconds.
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ifndef BENCH_DURATION
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BENCH_DURATION := 10
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endif
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CPPFLAGS-nonlib += -DDURATION=$(BENCH_DURATION)
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# Use clock_gettime to measure performance of functions. The default is to use
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# HP_TIMING if it is available.
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ifdef USE_CLOCK_GETTIME
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CPPFLAGS-nonlib += -DUSE_CLOCK_GETTIME
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endif
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DETAILED_OPT :=
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ifdef DETAILED
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DETAILED_OPT := -d
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endif
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# This makes sure CPPFLAGS-nonlib and CFLAGS-nonlib are passed
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# for all these modules.
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cpp-srcs-left := $(binaries-benchset:=.c) $(binaries-bench:=.c)
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lib := nonlib
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include $(patsubst %,$(..)cppflags-iterator.mk,$(cpp-srcs-left))
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extra-objs += json-lib.o
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bench-deps := bench-skeleton.c bench-timing.h Makefile
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run-bench = $(test-wrapper-env) \
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GCONV_PATH=$(common-objpfx)iconvdata LC_ALL=C \
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$($*-ENV) $(rtld-prefix) $${run}
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timing-type := $(objpfx)bench-timing-type
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bench-clean:
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rm -f $(binaries-bench) $(addsuffix .o,$(binaries-bench))
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rm -f $(binaries-benchset) $(addsuffix .o,$(binaries-benchset))
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rm -f $(timing-type) $(addsuffix .o,$(timing-type))
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bench: $(timing-type) bench-set bench-func
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bench-set: $(binaries-benchset)
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for run in $^; do \
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echo "Running $${run}"; \
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$(run-bench) > $${run}.out; \
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done
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# Build and execute the benchmark functions. This target generates JSON
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# formatted bench.out. Each of the programs produce independent JSON output,
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# so one could even execute them individually and process it using any JSON
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# capable language or tool.
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bench-func: $(binaries-bench)
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{ timing_type=$$($(timing-type)); \
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echo "{\"timing_type\": \"$${timing_type}\","; \
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echo " \"functions\": {"; \
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for run in $^; do \
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if ! [ "x$${run}" = "x$<" ]; then \
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echo ","; \
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fi; \
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echo "Running $${run}" >&2; \
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$(run-bench) $(DETAILED_OPT); \
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done; \
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echo; \
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echo " }"; \
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echo "}"; } > $(objpfx)bench.out-tmp; \
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if [ -f $(objpfx)bench.out ]; then \
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mv -f $(objpfx)bench.out $(objpfx)bench.out.old; \
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fi; \
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mv -f $(objpfx)bench.out-tmp $(objpfx)bench.out
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$(timing-type) $(binaries-bench) $(binaries-benchset): %: %.o $(objpfx)json-lib.o \
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$(sort $(filter $(common-objpfx)lib%,$(link-libc))) \
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$(addprefix $(csu-objpfx),start.o) $(+preinit) $(+postinit)
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$(+link)
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$(objpfx)bench-%.c: %-inputs $(bench-deps)
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{ if [ -n "$($*-INCLUDE)" ]; then \
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cat $($*-INCLUDE); \
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fi; \
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$(.)scripts/bench.py $(patsubst %-inputs,%,$<); } > $@-tmp
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mv -f $@-tmp $@
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