Date: Fri, 21 Aug 2020 11:52:23 -0700 From: Mark Millard <marklmi@yahoo.com> To: FreeBSD Current <freebsd-current@freebsd.org>, FreeBSD Toolchain <freebsd-toolchain@freebsd.org> Cc: freebsd-arm <freebsd-arm@freebsd.org> Subject: /usr/lib/libomp.so : is there a reason that aarch64 does not have such by default? Message-ID: <2E4E8340-E4C1-4ED4-9E3D-F249D85D10FF@yahoo.com> References: <2E4E8340-E4C1-4ED4-9E3D-F249D85D10FF.ref@yahoo.com>
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My context: head ( currently at -r363590 ) man src.conf is explicit that WITHOUT_OPENMP is the default for aarch64 (for example). But I note that https://openmp.llvm.org/README.txt says: (it has the more detailed breakdown of OS/compiler combinations for architectures where it matters) QUOTE Architectures Supported ======================= * IA-32 architecture * Intel(R) 64 architecture * Intel(R) Many Integrated Core Architecture * ARM* architecture * Aarch64 (64-bit ARM) architecture * IBM(R) Power architecture (big endian) * IBM(R) Power architecture (little endian) * MIPS and MIPS64 architectures * RISC-V 64 bit architecture 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 | ------------------------------------------------------------ . . . (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 . . . Supported Architectures: IBM(R) Power 7 and Power 8 ----------------------------- | gcc | clang | --------------|------------|--------------| | Linux* OS | Yes(1,2) | Yes(3,4) | ------------------------------------------- . . . ENDQUOTE Nothing stands out for why WITH_OPENMP is in use by default only for amd64, i386, and powerpc64. === Mark Millard marklmi at yahoo.com ( dsl-only.net went away in early 2018-Mar)
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