Jemalloc Cmake

TCMalloc is a malloc replacement library optimized for multi-threaded usage. It also features a built-in heap debugger and profiler. To build MariaDB 5.5 with TCMalloc, you need to use the following command. Cmake -DCMAKEEXELINKERFLAGS='-ltcmalloc' -DWITHSAFEMALLOC=OFF Many other malloc replacement libraries (as well as heap debuggers and profilers) can be used with MariaDB in a. Api-docs-resources atom-language-fidl build DEPRECATED buildtools DEPRECATED cobalt cobalt-registry codesearch Commit-Queue docs DEPRECATED experiences fargo fidlbolt. Jemalloc is a general purpose malloc(3) implementation that emphasizes fragmentation avoidance and scalable concurrency support jemalloc-devel-5.1.0-8-1-x8664.eopkg Development files for jemalloc.

• Jemalloc Cmake Set
• Jemalloc Cmake 3
• Jemalloc Cmake Current
• Jemalloc Cmake C

1. To build jemalloc we currently use $CMAKEMAKECOMMAND which is the command CMake generated 'makefiles' for. But jemalloc is setup to use configure & make always.
2. PyArrow has nightly wheels and conda packages for testing purposes. These may be suitable for downstream libraries in their continuous integration setup to maintain compatibility with the upcoming PyArrow features, deprecations and/or feature removals.

Introduction

ROOT uses the CMake cross-platform build-generator tool as theprimary build system.
CMake does not build the project, it generates the files needed byyour build tool (GNU make, Ninja, Visual Studio, etc) for building ROOT.

If you are really anxious about getting a functional ROOT build, go to the Quick Start section.
If you are a CMake novice, start on Basic CMake usage and then go back to theQuick Start.
The Options and the Variables section is a reference for customizing your build. If you already have experience with CMake, this is the recommended starting point.

Preparation

Make sure you have installed all required dependencies before building ROOT.

Quick start

The following are the basic instructions for UNIX-like systems. We will use the command-line, non-interactive CMake interface.

1. Download and unpack the ROOT sources for a specific release (make sure to download the 'Source distribution' and not a binary distribution) or simply clone ROOT's git repository and check out the branch you would like to build, for example:

   If you are interested in the latest stable (as opposed to a specific) version, you can get a copy as follows:

   This branch is expected to be updated regularly on each release. Therefore, users who cloned this branch can upgrade to the latest release in a straightforward way:

   In the following we will refer to the directory where ROOT sources are (e.g. root_src above) as .

2. Create a directory for the build and a directory for the installation. It is not supported to build ROOT in the source directory. Then change (cd) to the build directory:
3. Execute the cmake command on the shell replacing and appropriately:

   CMake will detect your development environment, perform a series of test and generate the files required for building ROOT. CMake will use default values for all build parameters. See the Build Options and Variables sections for fine-tuning your buildThis can fail if CMake cannot detect your toolset, or if it thinks that the environment is not sane enough. In this case make sure that the toolset that you intend to use is the only one reachable from the shell and that the shell itself is the correct one for you development environment. You can force CMake to use a given build tool, see the Usage section.

4. Proceed to use IDE project files or start the build from the build directory, after CMake has finished running:

   The --build option tells cmake to invoke the underlying build tool (make, ninja, xcodebuild, msbuild, etc).The underlying build tool can also be invoked directly of course, but the cmake --build command is more portable.On UNIX systems (with make or ninja) you can speedup the build with cmake --build . -- -jN where N is the number of available cores.

5. Setup ROOT in your environment:

   To have ROOT setup automatically at each login, that command can be appended to a .profile, .login, .bashrc or equivalent configuration file.

Caveats

As it makes use of a C++ interpreter, ROOT has somewhat stricter requirements than other C++ libraries: applications that depend on ROOTmust be compiled with the same C++ standard with which ROOT was compiled.

Also note that compatibility with compilers shipped with devtoolsets on CentOS or Red Hat is not guaranteed.

ROOT, Python and PyROOT

PyROOT, the set of Python bindings of ROOT, changed its structure and build/installation process in v6.22. In the following the main aspects are summarized for both after and before v6.22.

After v6.22

The main feature introduced in v6.22 concerning the PyROOT build system is the possibility to build for both Python3 and Python2 (MultiPython), available only if the version of CMake used to build is >= 3.14. In the following, build and installation processes both with CMake >= 3.14 and < 3.14 are described.

CMake >= 3.14

In this case, PyROOT libraries are built by default with both Python3 and Python2. For each Python version X.Y used to build PyROOT (e.g. 3.8, 2.7, etc.) the following libraries will appear both in the build directory and in the installation directory:

• libROOTPythonizationsX_Y.so
• libcppyX_Y.so
• libcppyy_backendX_Y.so

The following pure Python modules will appear as well:

• ROOT
• cppyy
• cppyy_backend

If no option is specified, PyROOT will be built for the most recent Python3 and Python2 versions that CMake can find. If only one version can be found, PyROOT will be built only for that version. Moreover, for a given Python installation to be considered, it must provide both the Python interpreter (binary) and the development package. To build PyROOT, it is thus suggested to verify that python-dev is present and install it if not.

In order to build with specific Python installations (not necessarily the highest ones) hints to CMake can be provided by using -DPython2_ROOT_DIR=python2_dir and/or -DPython3_ROOT_DIR=python3_dir to point to the root directory of some desired Python installation. Similarly, Python2_EXECUTABLE and/or Python3_EXECUTABLE can be used to point to particular Python executables.

PyROOT can be built with only one version of Python even if multiple installations are present in the system. For this purpose, the option -DPYTHON_EXECUTABLE=/path/to/python_exec must be used to point to the desired Python installation. Note that if PYTHON_EXECUTABLE is specified, neither Python3_EXECUTABLE or Python2_EXECUTABLE will be taken into consideration.

When executing a Python script, the Python version used will determine which version of the PyROOT libraries will be loaded. Therefore, once the ROOT environment has been set (e.g. via source $ROOTSYS/bin/thisroot.sh), PyROOT can be used from any of the Python versions it has been built for.

Example

The following other components are built and installed along with PyROOT:

• TPython: its library (libROOTTPython.so) is built only for the highest Python version that PyROOT is built with. Therefore, in a Python3-Python2 ROOT build, the Python code executed with TPython must be Python3-compliant.
• JupyROOT: built for both Python3 and Python2, it consists of a library libJupyROOTX_Y.so and a pure Python module JupyROOT.
• JsMVA: it consists of a pure Python module which can be used with both Python versions.

CMake < 3.14

If CMake version is < 3.14, the MultiPython feature is not available. PyROOT will thus be built only for one Python version: this is either the one found by CMake, usually the highest available in the system, or the one provided by setting the variable PYTHON_EXECUTABLE.

Before v6.22

For ROOT <= 6.20, an older version of PyROOT (not based on Cppyy) will be built. This same version can be built also in versions >= 6.22 by specifying -Dpyroot_legacy=ON. In this case the Python version used to build will be by default the one pointed by the executable python. A specific Python installation can be used by setting PYTHON_EXECUTABLE.

Setting the C++ standard

ROOT needs to be configured and built with the same C++ standard as the programs that will make use of it.The relevant cmake flag is CMAKE_CXX_STANDARD.For example, from the command line, the standard can be selected by passing one of 11, 14, 20,… such as -DCMAKE_CXX_STANDARD=14.

ROOT STL backports

ROOT backports certain useful C++ standard library features to make them available in C++11, for example std::make_unique and std::string_view.The backports can be found here in the reference guide.The backports are disabled, falling back to the actual C++ standard library implementation if it provides it, depending for instance on the C++ standard ROOT is compiled with and the compiler version.

Enabling experimental features, aka ROOT7

New and improved versions of standard ROOT components are being implemented under codename ROOT7.

Turning on C++14 (see Setting the C++ standard) or higher will automatically enable ROOT7.Alternatively, you can explicitly enable ROOT7 with -Droot7=ON, which will in turn set the standard to C++14 if avalue was not already specified by the user.

Building ROOT with CUDA support

To build ROOT with CUDA support, you need to have Nvidia's CUDA Toolkit installed,and optionally Nvidia's Cudnn library. The relevant CMakeoptions to set are CMAKE_CUDA_HOST_COMPILER (usually set to the same as CMAKE_CXX_COMPILER), and CMAKE_CUDA_STANDARD.Starting with ROOT 6.20.06 it is possible to set CMAKE_CXX_STANDARD and CMAKE_CUDA_STANDARD to different valuesto allow to compile ROOT with C++17 while CUDA code with C++14 when using CUDA 9 or 10. In addition to these options,the relevant ROOT build options to enable are -Dcuda=ON -Dcudnn=ON -Dtmva-gpu=ON.

System-wide installation

There are two main methods of installing ROOT from source: location independent and fixed location. The former isadvised for a personal installation of ROOT, while the latter for a system-wide installation. Both require to set theCMAKE_INSTALL_PREFIX variable at configuration time (its default is /usr/local if unset). The mode of installationis controlled via the gnuinstall option during configuration.

Location Independent Installation (gnuinstall=OFF)

This is the configuration used by the binary releases on the website. This method requires setting environment variablessuch as PATH, LD_LIBRARY_PATH, and PYTHONPATH. This is usually done by sourcing the script bin/thisroot.sh orequivalent for your shell from the installation directory. The installation can be done by running

from the build directory. If ROOT is built with -Drpath=ON, then it is usually not necessary to set LD_LIBRARY_PATHafter installation. It is also important to note that with this method it is usually not possible to customizeinstallation paths like CMAKE_INSTALL_BINDIR, CMAKE_INSTALL_LIBDIR, etc.

Fixed Location Installation (gnuinstall=ON)

The fixed location installation method is enabled with -Dgnuinstall=ON at configuration time, which then also allowsthe tuning of destinations for the various components by setting the variables CMAKE_INSTALL_xxxDIR, where xxx is BIN,LIB, INCLUDE, etc. The full list is available in cmake/modules/RootInstallDirs.cmake inside the repository andalso in the list of variables below. The fixed location installation method does not require setting any environmentvariables when ROOT is installed into default system paths (e.g. /usr, /usr/local). However, ifCMAKE_INSTALL_LIBDIR is a directory that is not searched for by the linker, it is recommended to enable-Drpath=ON or to add CMAKE_INSTALL_LIBDIR to /etc/ld.so.conf in order to avoid having to set LD_LIBRARY_PATHto be able to run ROOT. Nevertheless, it may still be necessary to set PYTHONPATH with this method if PyROOT is notinstalled into one of the system paths searched for by Python (run python -m site to see this list of paths). Thiscan be done with export PYTHONPATH=$(root-config --libdir) if root-config is already in your PATH.

All build options

Each build option is a boolean variable that can be turned ON or OFF. The current value is recorded in the CMake cache (CMakeCache.txt file on the build directory) and therefore it is not needed to be specified on the cmake command each time. Please note that some of the options might be turned OFF automatically for some platforms or if the required external library or component can not be satisfied. The user can view and edit the full list of options using the ccmake utility or cmake-gui for Windows. Note that on Windows some of the options are not yet implemented.

The user can set any CMake variable or option that controls the build process from the cmake command line. Passing cmake -D = creates an entry in the CMake cache. The list of the ROOT-specific CMake options can be found below.Note: Some options have platform-dependent default values (e.g. cocoa is ON on apple)

Click on one of the following dropdowns to see the full list of build options for a specific ROOT release:

Jemalloc Cmake Set

Relevant CMake variables

Here are some of the CMake variables that are used often, along with a brief explanation and ROOT-specific notes. For full documentation, check the CMake docs or execute cmake --help-variable VARIABLE_NAME.

Additional variables

A number of additional variables to control the way ROOT is built.

External libraries

ROOT requires a number of external libraries that the CMake system needs to locate. The list of externals depends on the build options that have been enabled. CMake will look for these third party products at a number of standard places in your system but the user can influence the search by setting some environment variables before invoking the CMake command or by setting package specific CMake variables to their exact location.

The actual cached values used by CMake for the exact location of libraries and include files of the used external libraries can be inspected and modified using the ccmake utility.

• Status:Resolved
• Resolution: Fixed
• Fix Version/s:0.4.0
• Labels:
• Environment:

>>> import pyarrow
Traceback (most recent call last):
File '', line 1, in
File '/home/default/src/venv/lib/python2.7/site-packages/pyarrow-0.2.1.dev244+g14bec24-py2.7-linux-x86_64.egg/pyarrow/_init_.py', line 28, in
import pyarrow._config
ImportError: libjemalloc.so.2: cannot open shared object file: No such file or directory

$LD_LIBRARY_PATH has libarrow_jemalloc.a along with other libraries including libarrow.so, libparquet.so, libparquet_arrow.so. Pyarrow was built using ----with-jemalloc and parquet-cpp was cmake-d with
-DPARQUET_ARROW=ON

Also, noticed that arrow/python documentation has been cleaned up with the installation instructions having the coda approach only .Is this the only supported way going forward ?

ARROW-913[Python] Only link jemalloc to the Cython extension where it's needed

Before v6.22

For ROOT <= 6.20, an older version of PyROOT (not based on Cppyy) will be built. This same version can be built also in versions >= 6.22 by specifying -Dpyroot_legacy=ON. In this case the Python version used to build will be by default the one pointed by the executable python. A specific Python installation can be used by setting PYTHON_EXECUTABLE.

Setting the C++ standard

ROOT needs to be configured and built with the same C++ standard as the programs that will make use of it.The relevant cmake flag is CMAKE_CXX_STANDARD.For example, from the command line, the standard can be selected by passing one of 11, 14, 20,… such as -DCMAKE_CXX_STANDARD=14.

ROOT STL backports

ROOT backports certain useful C++ standard library features to make them available in C++11, for example std::make_unique and std::string_view.The backports can be found here in the reference guide.The backports are disabled, falling back to the actual C++ standard library implementation if it provides it, depending for instance on the C++ standard ROOT is compiled with and the compiler version.

Enabling experimental features, aka ROOT7

New and improved versions of standard ROOT components are being implemented under codename ROOT7.

Turning on C++14 (see Setting the C++ standard) or higher will automatically enable ROOT7.Alternatively, you can explicitly enable ROOT7 with -Droot7=ON, which will in turn set the standard to C++14 if avalue was not already specified by the user.

Building ROOT with CUDA support

To build ROOT with CUDA support, you need to have Nvidia's CUDA Toolkit installed,and optionally Nvidia's Cudnn library. The relevant CMakeoptions to set are CMAKE_CUDA_HOST_COMPILER (usually set to the same as CMAKE_CXX_COMPILER), and CMAKE_CUDA_STANDARD.Starting with ROOT 6.20.06 it is possible to set CMAKE_CXX_STANDARD and CMAKE_CUDA_STANDARD to different valuesto allow to compile ROOT with C++17 while CUDA code with C++14 when using CUDA 9 or 10. In addition to these options,the relevant ROOT build options to enable are -Dcuda=ON -Dcudnn=ON -Dtmva-gpu=ON.

System-wide installation

There are two main methods of installing ROOT from source: location independent and fixed location. The former isadvised for a personal installation of ROOT, while the latter for a system-wide installation. Both require to set theCMAKE_INSTALL_PREFIX variable at configuration time (its default is /usr/local if unset). The mode of installationis controlled via the gnuinstall option during configuration.

Location Independent Installation (gnuinstall=OFF)

This is the configuration used by the binary releases on the website. This method requires setting environment variablessuch as PATH, LD_LIBRARY_PATH, and PYTHONPATH. This is usually done by sourcing the script bin/thisroot.sh orequivalent for your shell from the installation directory. The installation can be done by running

from the build directory. If ROOT is built with -Drpath=ON, then it is usually not necessary to set LD_LIBRARY_PATHafter installation. It is also important to note that with this method it is usually not possible to customizeinstallation paths like CMAKE_INSTALL_BINDIR, CMAKE_INSTALL_LIBDIR, etc.

Fixed Location Installation (gnuinstall=ON)

The fixed location installation method is enabled with -Dgnuinstall=ON at configuration time, which then also allowsthe tuning of destinations for the various components by setting the variables CMAKE_INSTALL_xxxDIR, where xxx is BIN,LIB, INCLUDE, etc. The full list is available in cmake/modules/RootInstallDirs.cmake inside the repository andalso in the list of variables below. The fixed location installation method does not require setting any environmentvariables when ROOT is installed into default system paths (e.g. /usr, /usr/local). However, ifCMAKE_INSTALL_LIBDIR is a directory that is not searched for by the linker, it is recommended to enable-Drpath=ON or to add CMAKE_INSTALL_LIBDIR to /etc/ld.so.conf in order to avoid having to set LD_LIBRARY_PATHto be able to run ROOT. Nevertheless, it may still be necessary to set PYTHONPATH with this method if PyROOT is notinstalled into one of the system paths searched for by Python (run python -m site to see this list of paths). Thiscan be done with export PYTHONPATH=$(root-config --libdir) if root-config is already in your PATH.

All build options

Each build option is a boolean variable that can be turned ON or OFF. The current value is recorded in the CMake cache (CMakeCache.txt file on the build directory) and therefore it is not needed to be specified on the cmake command each time. Please note that some of the options might be turned OFF automatically for some platforms or if the required external library or component can not be satisfied. The user can view and edit the full list of options using the ccmake utility or cmake-gui for Windows. Note that on Windows some of the options are not yet implemented.

The user can set any CMake variable or option that controls the build process from the cmake command line. Passing cmake -D = creates an entry in the CMake cache. The list of the ROOT-specific CMake options can be found below.Note: Some options have platform-dependent default values (e.g. cocoa is ON on apple)

Click on one of the following dropdowns to see the full list of build options for a specific ROOT release:

Jemalloc Cmake Set

Relevant CMake variables

Here are some of the CMake variables that are used often, along with a brief explanation and ROOT-specific notes. For full documentation, check the CMake docs or execute cmake --help-variable VARIABLE_NAME.

Additional variables

A number of additional variables to control the way ROOT is built.

External libraries

ROOT requires a number of external libraries that the CMake system needs to locate. The list of externals depends on the build options that have been enabled. CMake will look for these third party products at a number of standard places in your system but the user can influence the search by setting some environment variables before invoking the CMake command or by setting package specific CMake variables to their exact location.

The actual cached values used by CMake for the exact location of libraries and include files of the used external libraries can be inspected and modified using the ccmake utility.

• Status:Resolved
• Resolution: Fixed
• Fix Version/s:0.4.0
• Labels:
• Environment:

>>> import pyarrow
Traceback (most recent call last):
File '', line 1, in
File '/home/default/src/venv/lib/python2.7/site-packages/pyarrow-0.2.1.dev244+g14bec24-py2.7-linux-x86_64.egg/pyarrow/_init_.py', line 28, in
import pyarrow._config
ImportError: libjemalloc.so.2: cannot open shared object file: No such file or directory

$LD_LIBRARY_PATH has libarrow_jemalloc.a along with other libraries including libarrow.so, libparquet.so, libparquet_arrow.so. Pyarrow was built using ----with-jemalloc and parquet-cpp was cmake-d with
-DPARQUET_ARROW=ON

Also, noticed that arrow/python documentation has been cleaned up with the installation instructions having the coda approach only .Is this the only supported way going forward ?

ARROW-913[Python] Only link jemalloc to the Cython extension where it's needed

Jemalloc Cmake 3

• Resolved

• Assignee:

  Uwe Korn

  Reporter:

  Abdul Rahman

Jemalloc Cmake Current

• Votes:

  0Vote for this issue

  Watchers:

  3Start watching this issue

Jemalloc Cmake C

• Created:

  Updated:

  Resolved: