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A benchmark for standard libraries
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benchmark @ 5e66248 update google/benchmark Nov 9, 2017
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.gitmodules Setting up the std benchmark Dec 10, 2016
.travis-cmake-install.sh cmake Dec 21, 2016
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LICENSE license Dec 10, 2016
README.md win64 May 3, 2017
TODO.txt llbit May 10, 2017
config.bat comment May 10, 2017

README.md

A benchmark for c/c++ standard library.

Build Status

DEPENDENCIES

  • CMake 2.8 or higher
  • Since this is a standard library benchmark, you need a compiler toolchain to benchmark.
  • A C++ compiler with C++11 support
  • google-benchmark (added as a submodule) To download the google-benchmark submodule run the following command in the project root. git submodule update --recursive --remote

BUILDING ON LINUX, MAC

mkdir $SRC/build
cd $SRC/build
cmake ..
cmake --build .
cmake --buid . --config Release

When you are compiling with clang compiler along with libcxx enabled (-DBENCHMARK_USE_LIBCXX=ON), you might get cmake error like this:

   CMake Error at benchmark/CMakeLists.txt:171 (message):
   Failed to determine the source files for the regular expression backend
  -- Configuring incomplete, errors occurred!

In that case,

export LD_LIBRARY_PATH=path-to-clang-install/lib

BUILDING WITH VISUAL STUDIO

mkdir $SRC/build
cd $SRC/build
C:\Program Files (x86)\Microsoft Visual Studio <Version>\VC\vcvarsall.bat amd64
cmake -G"Visual Studio 15 2017 Win64" ..
cmake --build . --config release

Remember to use a generator for Win64 otherwise 32-bit binaries will be built. For more help see config.bat in the top level directory. It has some useful tricks which allows you to use git-bash for building and running the tests.

If there are errors then build the project by opening the visual studio IDE (devenv) and then try to build one component at a time.

TESTING

To test the project run ctest. Running ctest will run the google-benchmark harness tests as well, so if you are only interested in runningthe c and cxx std-benchmark tests use:

ctest -L c --verbose
ctest -L cxx --verbose
ctest -C Release -L c.vs.cxx --verbose

NB: On windows the tests might not run because ctest adds each test under specific configurations. So you have to pass the appropriate configuration using the -C <config> e.g.,

ctest -C Release -L c --verbose
ctest -C Release -L cxx --verbose
ctest -C Release -L c.vs.cxx --verbose
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