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README for Intel(R) OpenMP* Runtime Library =========================================== How to Build Documentation ========================== The main documentation is in Doxygen* format, and this distribution should come with pre-built PDF documentation in doc/Reference.pdf. However, an HTML version can be built by executing: % doxygen doc/doxygen/config in this directory. That will produce HTML documentation in the doc/doxygen/generated directory, which can be accessed by pointing a web browser at the index.html file there. If you don't have Doxygen installed, you can download it from www.doxygen.org. How to Build the Intel(R) OpenMP* Runtime Library ================================================= The library can be built either using Cmake, or using a makefile that in turn invokes various Perl scripts. For porting, non X86 architectures, and for those already familiar with Cmake that may be an easier route to take than the one described here. Building with CMake =================== The runtime/Build_With_CMake.txt file has a description of how to build with Cmake. Building with the Makefile ========================== The Makefile at the top-level will attempt to detect what it needs to build the Intel(R) OpenMP* Runtime Library. To see the default settings, type: make info You can change the Makefile's behavior with the following options: omp_root: The path to the top-level directory containing the top-level Makefile. By default, this will take on the value of the current working directory. omp_os: Operating system. By default, the build will attempt to detect this. Currently supports "linux", "macos", and "windows". arch: Architecture. By default, the build will attempt to detect this if not specified by the user. Currently supported values are "32" for IA-32 architecture "32e" for Intel(R) 64 architecture "mic" for Intel(R) Many Integrated Core Architecture "arm" for ARM* architecture "aarch64" for Aarch64 (64-bit ARM) architecture "ppc64" for IBM(R) Power architecture (big endian) "ppc64le" for IBM(R) Power architecture (little endian) If "mic" is specified then "icc" will be used as the compiler, and appropriate k1om binutils will be used. The necessary packages must be installed on the build machine for this to be possible (but an Intel(R) Xeon Phi(TM) coprocessor card is not required to build the library). compiler: Which compiler to use for the build. Defaults to "icc" or "icl" depending on the value of omp_os. Also supports some versions of "gcc"* when omp_os is "linux". The selected compiler should be installed and in the user's path. The corresponding Fortran compiler should also be in the path. See "Supported RTL Build Configurations" below for more information on compiler versions. mode: Library mode: default is "release". Also supports "debug". jobs: The number of parallel jobs for the underlying call to make. This value is sent as the parameter to the -j flag for make. This value defaults to "1", but can be set to any positive integer. To use any of the options above, simple add <option_name>=<value>. For example, if you want to build with gcc instead of icc, type: make compiler=gcc On OS X* machines, it is possible to build universal (or fat) libraries which include both IA-32 architecture and Intel(R) 64 architecture objects in a single archive; just build the 32 and 32e libraries separately, then invoke make again with a special argument as follows: make compiler=clang build_args=fat Supported RTL Build Configurations ================================== Supported Architectures: IA-32 architecture, Intel(R) 64, and Intel(R) Many Integrated Core Architecture ---------------------------------------------- | icc/icl | gcc | clang | --------------|---------------|----------------------------| | Linux* OS | Yes(1,5) | Yes(2,4) | Yes(4,6,7) | | FreeBSD* | No | No | Yes(4,6,7,8) | | OS X* | Yes(1,3,4) | No | Yes(4,6,7) | | Windows* OS | Yes(1,4) | No | No | ------------------------------------------------------------ (1) On IA-32 architecture and Intel(R) 64, icc/icl versions 12.x are supported (12.1 is recommended). (2) GCC* version 4.7 is supported. (3) For icc on OS X*, OS X* version 10.5.8 is supported. (4) Intel(R) Many Integrated Core Architecture not supported. (5) On Intel(R) Many Integrated Core Architecture, icc/icl versions 13.0 or later are required. (6) Clang* version 3.3 is supported. (7) Clang* currently does not offer a software-implemented 128 bit extended precision type. Thus, all entry points reliant on this type are removed from the library and cannot be called in the user program. The following functions are not available: __kmpc_atomic_cmplx16_* __kmpc_atomic_float16_* __kmpc_atomic_*_fp (8) Community contribution provided AS IS, not tested by Intel. Supported Architectures: IBM(R) Power 7 and Power 8 ----------------------------- | gcc | clang | --------------|------------|--------------| | Linux* OS | Yes(1,2) | Yes(3,4) | ------------------------------------------- (1) On Power 7, gcc version 4.8.2 is supported. (2) On Power 8, gcc version 4.8.2 is supported. (3) On Power 7, clang version 3.7 is supported. (4) On Power 8, clang version 3.7 is supported. Front-end Compilers that work with this RTL =========================================== The following compilers are known to do compatible code generation for this RTL: icc/icl, gcc. See the documentation for more detail. ----------------------------------------------------------------------- Notices ======= *Other names and brands may be claimed as the property of others.
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