Clang Mtune

MacPortsのclang-3. Beyond the typical checks you should performroutinely during the development of your package, CRAN maintainers also checkfor “Memory access” in your C/C++ code. 0 architecture, but optimize for cyclone". Let me run through the basics of "-march" and "-mtune" that most experienced programmers will know about. They roughly correspond to the ones for gcc, but are not identical. io with your name, e-mail, keygrip and key fingerprint. Reported by: Adrian Bunk Date: Thu, 29 Jun 2017 04:57:01 UTC. -mtune = nativeは-O2 / -O3では機能しませんでした( `ld`は狂ったように爆発しました) シンボルの再定義エラー)、生成されたコードが私のマイクロアーキテクチャ用に調整されているとは思わない。 SSEでこれをわずかに速くする方法があるかもしれません。. 1 is on pair with icc 12. Clang commits. * - Main goods are marked with red color. it Ffmpeg clang. I thought I understood them, until now. For the general LLVM release notes, see the LLVM documentation. This turns off certain features of GCC that are incompatible with ISO C89, such as the asm and typeof keywords, and some predefined macros that identify the type of system you are using. The options passed to a C/C++ compiler (e. In contrast to -mtune=cpu-type, which merely tunes the generated code for the specified cpu-type, -march=cpu-type allows GCC to generate code that may not run at all on processors other than the one indicated. 在寻你机上编译通过后,吧执行文件导入arm-linux中,总是提示-bash: no such file or diractory,坑爹啊,虚拟机arm-linux-gnueabi-gcc-4. seen on freeBSD+clang, OS X+clang and linux+clang. It was not faulty hardware causing that issue. いやー、もう8月も終わりに近づてきましたね〜! 皆さんはどっか行きましたか? 自分はお盆休みもバイクをモリワキ…. I will probably leave the cflags alone, thanks. Most content also applies to Oracle Solaris Studio IDE. It can be used with the (-g) flag for enabling debugging symbols. April 2019. 在寻你机上编译通过后,吧执行文件导入arm-linux中,总是提示-bash: no such file or diractory,坑爹啊,虚拟机arm-linux-gnueabi-gcc-4. Reported by: Adrian Bunk Date: Thu, 29 Jun 2017 04:57:01 UTC. This turns off certain features of GCC that are incompatible with ISO C89, such as the asm and typeof keywords, and some predefined macros that identify the type of system you are using. In contrast to -mtune=cpu-type, which merely tunes the generated code for the specified cpu-type, -march=cpu-type allows GCC to generate code that may not run at all on processors other than the one indicated. Options Controlling C Dialect. Amazon's cross-toolchain could be used with Clang (as tested on Debian clang version 3. Approved by: portmgr (tier-2 blanket) 06 Apr 2019 19:52:36 1. Clang 已更新至 3. Severity: serious Tags: buster, experimental. -march= implies -mtune=. This document contains the release notes for the Clang C/C++/Objective-C frontend, part of the LLVM Compiler Infrastructure, release 3. ppm compression added (from paq8p3). 顺便来解释一下上面的脚本. 1 Distro: Manjaro Linux Machine: Type: Desktop System: Micro-Star product: H110 Gaming Trident 3 (MS-B906) v: 1. -mtune = native -mllvm -vectorize-loops clang++ 3. 333 --disable-cuda-llvm disable CUDA compilation using clang [autodetect] 334 --disable-cuvid disable Nvidia CUVID support [autodetect] 335 --disable-d3d11va disable Microsoft Direct3D 11 video acceleration code [autodetect]. 5) don't have -mtune=power9 yet, so we revert to power8 for now. 1 to only enable exception by default for C++, not for C. So GCC and Clang have flags that allow you to tell them what kind of hardware you have. The library for Grand Central Dispatch is called libdispatch, and tasks can be submitted to libdispatch with blocks, or with a C API. clang is the GCC-compatible driver. The command below fro both GCC and Clang will: change directory to your downloads. 0 serial: UEFI: American. I don't know how to explain clang -cc1 properly but the word that matters is frontend. 背景 Travis CIに入っているImageMagickはどうもEXIFが扱えない模様で 自前でビルドしてこれを使用して、テストをすることにした。 たまたま、clangを使う設定をしており、ImageMagickのビルド自体. 0 next year, the Clang compiler on x86/x86_64 CPUs will finally honor -mtune= in a similar manner to GCC. vsave and fails assembler. Android 编译FFmpeg我们编译FFmpeg一般在Linux的系统上进行编译,当然windows也是可以的,这里讲解一下在Linux系统上编译。 从官网下载FFmpeg(文档编辑时版本 ffmpeg-4. - Source code data types are not always preserved by clang CC1 - Clang CC1 changes procedure’s signature to be conformant with the target Application Binary Interface (ABI) - In order to generate OpenMP pragmas/clauses, Parallware needs to determine the signature of all the source code procedures. Fixed some code causing compiler errors with clang 3. 6, a problem must happen between openmp and clang. Has anyone recently (in 2012) done any serious benchmarking of these compilers?. 0, the instruction scheduling in LLVM/Clang could only accept a -march (called target-cpu in LLVM parlance) switch for both instruction set and scheduling. 特定のアーキテクチャー向けにコードを生成するようコンパイラーに指示します。 IDE オプション. android / platform / external / clang / 7a0c064770355a4918df69f95de8dea6338a59a2 /. Svn head built on Dec 4, 2010: $ current-gcc -v Using built-in specs. Have a look at clang's manpages for additional information. Caused by vectorization of dot product. Emit Clang AST files for source inputs--emit-static-lib¶ Enable linker job to emit a static library. April 2019. Documentation contributions included herein are the copyrights of their respective owners. Dependencies. (I’ve been told that -mtune in clang is a no-op, so I don’t know what the appropriate way. 0-- The CXX compiler identification is Clang 3. The board comes with clang 3. The -mtune command line option is no longer ignored for X86. Compiled for: x86_64-apple-darwin16. The goal of the Centmin Mod menu based installation was to make it easier to manage without the aid of a control panel. gnustep foundation framework and so on). しかし、 「armeabi-v7a 用をビルドするには arm-linux-androideabi-4. 0 next year, the Clang compiler on x86/x86_64 CPUs will finally honor -mtune= in a similar manner to GCC Ubuntu To Try Again In Switching IPTables To Use Nftables Backend. 12月の滋賀寒すぎでしょ。こんにちは、しゅもんです。 さっそくですが、みなさん「ライブラリ」はご存知ですか? 知っていても知っていなくても普段とってもお世話になっているはずです。. -mtune = native -mllvm -vectorize-loops clang++ 3. This can be used to request microarchitectural optimizations independent on -march. -enable-trivial-auto-var-init-zero-knowing-it-will-be-removed-from-clang¶ Trivial automatic variable initialization to zero is only here for benchmarks, it'll eventually be removed, and I'm OK with that because I'm only using it to benchmark. This is a clang bug and has been reported to their team. gnustep libojc dynamic library. To be more precise I'm using libvlc_audio_set_volume method to create fade out effect on my libvlc based audio player but in the final 400 - 500 milliseconds of playback method calls make no effect even though method return success status. Report on Profile Information. clang-tidy's modernize-user-trailing-return-type gained support for C++20 concepts and decltype. 3,ab板子是A80板子,SDK自带的arm-linux-gnueabi-gcc-4. Older versions of Clang + would return true when the attribute spelling was known, regardless of whether + the attribute was available to the specific. log shows it fails to link because a. Clang recently got a Visual C++ compatible mode so you can use it for Windows platform development also so you can link directly programs to Visual C++ Redistributable Packages. org/show_bug. Lucky for us (in this case) it works exactly the same way as gcc. 各位大侠: 我这里得到一个C语言的dll库文件,然后在VS2008能够编辑成功,但是同样的代码移到QT上,加载时就报错expected identifier or '(' before string constant,坐等求解. -march= implies -mtune=. There is auto-vectorization in Clang, but it may not be as efficient as in gcc or Intel's compiler, so your mileage may very. LLVM Clang Will Finally Honor "-mtune=" On x86/x86_64 CPUs Starting with LLVM Clang 12. In contrast to -mtune=cpu-type, which merely tunes the generated code for the specified cpu-type, -march=cpu-type allows GCC to generate code that may not run at all on processors other than the one indicated. Compiler: clang Static libraries: no Shared libraries: yes -mtune=k8 -march=k8 が目立ちました。. linux 下arm编译问题,no such file or diractory_course. April 2019. 31 は、Rust プログラミング言語コンパイラー rustc、cargo ビルドツールおよび依存マネージャー、cargo-vendor プラグイン、および必要なライブラリーを提供します。『Using Rust Toolset』を参照してください. Clang does use this target in its search for an appropriate assembler and linker. Supported GCC options in the Clang-based front end This list shows the key GCC options that are supported in the Clang-based front end of IBM® XL C/C++ for AIX®, V16. This can be used to request microarchitectural optimizations independent on -march. The compiler options -march sets the overall architecture family and CPU features to be targetted, and the -mtune option sets the specific target for tuning. Man Pages for UNIX, BSD, & Perl : DamnSmallBSD. llvm之旅第二站 - 环境配置. clang is the GCC-compatible driver. 9/LLVM Clang. I had actually tested them and things seemed to work, but it was on a different machin. 2015-04-10 13:06:42. mk to use latest versionifeq($(TARGET_ARCH_ABI),x86) LOCAL_CFLAGS +=-ffast-math -mtune=atom -mssse3. 0 or better, and in IE 5 or better. 1 to only enable exception by default for C++, not for C. In the timings, GCC’s abort code was 2 cycles faster than GCC’s exception code. # options passed: mem. Xcode Apple Clang enable avx512. TOOLCHAIN is a base path to GCC toolchain (Clang falls back to GCC LD and other components). I would like know if there is some command to show what switches are enabled by march and mcpu for each CPU. The HTML report generated by plprofiler is a self-contained HTML document, and it gives detailed information about the PL/pgSQL function execution. sh --prefix=/opt To launch Siril, the command name is siril. which is not very helpful. CFLAGS="-g -O2 -mtune=native -march=native -mfpmath=sse " \ you may have success by trying to first export AS="clang -x assembler" which will use the build-in. Qpatchable-addresses. Re: [PATCH] [RFC] x86: avoid -mtune=atom for objtool warnings Josh Poimboeuf (Wed Mar 01 2017 - 10:26:49 EST) Re: [PATCH] [RFC] x86: avoid -mtune=atom for objtool warnings Arnd Bergmann (Wed Mar 01 2017 - 10:23:04 EST) Re: [PATCH] [RFC] x86: avoid -mtune=atom for objtool warnings Josh Poimboeuf (Thu Mar 02 2017 - 13:34:23 EST). A package is loaded from a library by the function library(). -march=i686 -mtune=intel -mssse3 -mfpmath=sse -m32 These flags target the Pentium Pro instruction set, along with the the MMX, SSE, SSE2, SSE3, and SSSE3 instruction set extensions. 1 + MacOSX10. 8svn (r256229, build 2812033). When you run scons, you'll also want to make sure you add "cxx=clang" to the scons commandline, to tell Rosetta/scons. AFAICT, Apple have not released the source-code for version 351. There is auto-vectorization in Clang, but it may not be as efficient as in gcc or Intel's compiler, so your mileage may very. In contrast to -mtune=cpu-type, which merely tunes the generated code for the specified cpu-type, -march=cpu-type allows GCC to generate code that may not run at all on processors other than the one indicated. These switches tell the compiler to generate code that work for a wide range of CPUs, but schedule the code such that it works better with the microarchitectual details of some CPU that may be newer and more popular. Using -mtune=native produces code optimized for the local machine under the constraints of the selected instruction set. Compiling code with -march=z13 reduces the default alignment of vector types bigger than 8 bytes to 8. Modified the stock Khronos EGL header eglplatform. GCC Bugzilla – Bug 69471 "-march=native" unintentionally breaks further -march/-mtune flags Last modified: 2020-03-12 11:59:03 UTC. Clang and GCC have two switches, -mcpu and -march, to enable some optimizations especific for the CPU selected. uk/docs/gccintro/gccintro_23. Is your Jetson flashed with Linux4Tegra version R24. Clang サポートの概要 mtune. Are you sure that you don't have a old version of the hexbin package installed on your system? I would try removing that with the 'remove. The library for Grand Central Dispatch is called libdispatch, and tasks can be submitted to libdispatch with blocks, or with a C API. log shows it fails to link because a. For details about these options, see the GNU Compiler Collection online. 1-a will perform quite well on ThunderX2! Figure 7 also shows that using -mcpu=thunderx2t99 is the best option for all compilers. Note that pi. AS – assembler, we will use Clang as assembler as well. You can see at the Clang - FAQ that clang -cc1 is the frontend. 19-4ubuntu1) utopic; urgency=medium * Merge with Debian unstable, switching us to glibc and fixing bugs: - Fix invalid fd reuse while sending DNS queries (LP: #1328975) - Avoid Freescale 8xx dcbz workaround on ppc64el (LP: #1333499) - Remove wrong ibm long double assembly routines (LP. Linking with Clang. They are “-march” and “-mtune”. Clang is the most known front end for LLVM which is a C/C++/ObjC/Swift compiler. The options passed to a C/C++ compiler (e. gcc had to be apt-getted from the jessie repo, while clang was installed manually from llvm's binaries. LLVM Clang Will Finally Honor "-mtune=" On x86/x86_64 CPUs Starting with LLVM Clang 12. Compiler: clang Static libraries: no Shared libraries: yes -mtune=k8 -march=k8 が目立ちました。. Getting C code into N64 ROMs is easier than you might think using n64chain and armips. 1? https://developer. You can see at the Clang - FAQ that clang -cc1 is the frontend. packages()' function, then try installing hexbin by itself, followed by the 'openair' package - it did work for me when I tried it with MRO 3. float64(5)>e or >= instead of >, or pi instead of e. The -mtune command line option is no longer ignored for X86. -march=cpu-type Generate instructions for the machine type cpu-type. 1 is on pair with icc 12. 09 clang -march=native -mtune=native 4. There is auto-vectorization in Clang, but it may not be as efficient as in gcc or Intel's compiler, so your mileage may very. What is DW_AT_producer?. Centmin Mod was created and tested to work as standalone Nginx, PHP-FPM and MariaDB MySQL stack without the use of any control panels. Introduction The Cortex-A76 codenamed "Enyo" will be the first of three CPU cores from ARM designed to target the laptop market between 2018-2020. Emit Clang AST files for source inputs--emit-static-lib¶ Enable linker job to emit a static library. See full list on wiki. 对于clang编译器也是一样的。 另外网上有些说加上-I(大写字母)和-l(小写字母)选项的,我试了下有些选项的使用是错误的,即编译器认为是使用错误的,提示正确的Usage。. GCC has long allowed the -mtune= option on Intel/AMD processors for supporting microarchitectural tuning optimizations (scheduler model) to be applied independent of the CPU being targeted for instructions to. Roy Schestowitz (罗伊) ([email protected] ↑ GCC & LLVM Clang Compiler Benchmarks On AMD's EPYC 7601 (Phoronix, 26 Sept 2017, by Michael Larabel); page 6: …and then GCC 7. An icon used to represent a menu that can be toggled by interacting with this icon. They roughly correspond to the ones for gcc, but are not identical. 2) is too smart to fall for this separate destination thing and “optimizes” the code back to something like our original version. CFLAGS='-mtune=native -O3'. Hey guys, I am trying to figure out how to compile PCSX2 with an older GCC. packages(ask = FALSE) This is managed by Anaconda on MacOS and I'll include the Pastebin with the entire warning message I was able to…. I will give GCC 9 a try because I spent good part of this year speeding LTO up. 1 , which is invoked by xlclang/xlclang++. -march=cpu-type Generate instructions for the machine type cpu-type. After a trying to submit phylobaseto CRAN, I learned a lot about the quality checks that go into a package beforebeing available to the public. First is similar gcc's -mtune option (it includes micro architecture related feature only, ex. 最近いくつかの新しいサーバーを購入し、memcpyパフォーマンスが低下しています。 memcpyのパフォーマンスは私達のラップトップと比較してサーバー上で3倍遅くなります。 サーバーの仕様 シャシーとモボ:SUPER MICRO 1027GR-TRF CPU:2倍のIntel Xeon E5-2680 @ 2. It is a little more tricky to set up, because running with uninstrumented libraries will lead into false positives. makepkg es usado para compilar y construir paquetes capaces de instalar mediante pacman, el manejador de paquetes de Arch Linux. g++ -DNDEBUG -g -O2 -D__STRICT_ANSI__=1 -fPIC -ffunction-sections -fdata-sections -maes -mpclmul -mtune=core-avx-i -arch x86_64 -arch i386 -DCRYPTOPP_DISABLE_ASM. h include sys/sysmacros. 3-1-MANJARO x86_64 bits: 64 compiler: gcc v: 8. If we ever implement -mtune, then a command line like clang -march=armv8a -mtune=cyclone should mean “generated correct code for the v8. The options passed to a C/C++ compiler (e. It looks like part of Bug 1371485 is to vendor gyp elsewhere in tree at which time we can complete cleaning this up. Posted 7/11/16 10:04 AM, 10 messages. The HTML report generated by plprofiler is a self-contained HTML document, and it gives detailed information about the PL/pgSQL function execution. / lib / Driver / Tools. Clang now returns true only - when the attribute pertains to the current compilation target. This can be used to request microarchitectural optimizations independent on -march. 0作为下一个版本应该在9月~ 10月的时间框架内发布。 两个编译器都使用-mavx512bf16作为启用AVX-512 BF16使用的开关。 对BFloat16的支持已经到位,而英特尔还没有为mtune/march 标志引入任何合作目标,但肯定会在适当的时候到来。. It is about 3000 lines of code. Hello *, after compiling clang/safecode in cygwin (installed in home/uid04950/WORK/LLVM_INSTALL) I tried to compile the test program: #include "stdio. And I modified my script to use: CFLAGS='-O3 -march=x86 -mtune=pentium-m' Unfortunately clang complains again: error: unknown target CPU 'x86' note: valid target CPU values are: (same old list) I hope someone can shed some light on all this. (-Og) - Optmizing for debugging. 第一原理計算コードのセットアップから使用方法、結果の解釈の方法までを解説したホームページですMacBookPro(MacOSX10. This is a pair of benchmarks that implement a very trivial raytracer in C and Pascal - the code is 99. Getting C code into N64 ROMs is easier than you might think using n64chain and armips. Installing form GIT gives me errors [solved] Good Morning, sorry to bother, Ive installed OpenModelica from GIT using the instructions given here. Here is a truncated output of the long list of output messages I get upon: update. Merged with 873200. On armv6, it’s failing to configure stating the C compiler won’t produce binaries. Created on 2014-03-15 01:45 by Jeffrey. asc 形式の署名ファイルが PKGBUILD の source 行に含まれている場合、makepkg は自動的に署名を検証します。 ユーザーのキーリングに署名検証に必要な公開鍵が存在しない場合、makepkg はインストールを停止して PGP 鍵が検証できないというメッセージを表示します。. But now I set linker-optimization for clang and the pre-compilation checks fail. 9% the same in both, the main difference is that the C code uses arrays to represent vectors (e. GCC has long allowed the -mtune= option on Intel/AMD processors for supporting microarchitectural tuning optimizations (scheduler model) to be applied independent of the CPU being targeted for instructions to. gcc had to be apt-getted from the jessie repo, while clang was installed manually from llvm's binaries. These switches tell the compiler to generate code that work for a wide range of CPUs, but schedule the code such that it works better with the microarchitectual details of some CPU that may be newer and more popular. gz #ダウンロードしてきたtarファイルを展開します。. -march=i686 enables internally -mmmx, -msse and so forth. 1 on Mac OS-X Sierra. AFAICT, Apple have not released the source-code for version 351. 87 gcc -march=native -mtune=native 0. io with your name, e-mail, keygrip and key fingerprint. Here is an explanation of what -z now is. org services, including Bugzilla, is subject to our Code of Conduct. The maintainers of the R repositories require strict ISO C. Other than that, the key point is where the ARM libraries and headers are. n() are of type RR, so again it points at the direction on mpfr. Caused by vectorization of dot product. Using clang with portage. MemorySanitizer is a compile-time instrumentation layer in clang and GCC. Adding this feature to cyclone as is would probably result in the above command line producing code that isn't architecturally correct for v8. The documentation provided herein is. I don't know how to explain clang -cc1 properly but the word that matters is frontend. py that you want to use the (now default) clang compiler on MacOS, rather than trying to do something with GCC. Here we describe the status of Clang in some detail, including major improvements from the previous release and new feature work. wine - basic microsoft functionality, focus on office work. GCC has long allowed the -mtune= option on Intel/AMD processors for supporting microarchitectural tuning optimizations (scheduler model) to be applied independent of the CPU being targeted for instructions to enable that is set via the -march=. in clang, -mtune option alias to -mcpu. Installing form GIT gives me errors [solved] Good Morning, sorry to bother, Ive installed OpenModelica from GIT using the instructions given here. This is @(#)PROGRAM:ld PROJECT:ld64-351. Thus a library is a directory containing installed packages; the main library is R_HOME/library, but others can be used, for example by setting the environment variable R_LIBS or using the R function. float64(5)>e or >= instead of >, or pi instead of e. Clang サポートの概要 mtune. This is @(#)PROGRAM:ld PROJECT: ld64-274. Although Apple's clang just indicates openmp is not supported, llvm's newer clang versions pass the openmp test, but in the end are misconfigured by inserting -gomp into the pkg-config link flags. 8 so there's nothing I can do about this at present. x64 GCC and Clang both generate slower code for this use case when exceptions are enabled. asc 形式の署名ファイルが PKGBUILD の source 行に含まれている場合、makepkg は自動的に署名を検証します。 ユーザーのキーリングに署名検証に必要な公開鍵が存在しない場合、makepkg はインストールを停止して PGP 鍵が検証できないというメッセージを表示します。. The default Apple Clang compiler does not support OpenMP, so using the default compiler would have disabled multi-threading. Tomasz Paweł Gajc Wed, 26 Aug 2020 02:17:11 -0700. 0 Desktop: i3 4. We need to fix Clang support later (by change order of option checking). cargo calls clang with --target=x86_64. It can be used with the (-g) flag for enabling debugging symbols. Introduction Clang is usually quite straightforward to use, but only for simple C/C++ programs that do not have a complex build process. Clang has the usual optimization levels (-O1,-O2,-O3,-Ofast,-Os). Approved by: portmgr (tier-2 blanket) 06 Apr 2019 19:52:36 1. This page lists all compiler options with which implementation ref of aes256 was tested. The key is to create a VPC with 4 subnets 2 public and 2 private in one vpc across 2 availability zones (east-1a and east-1b) the private for cluster traffic and the public with elastic ip addresses only available from the company network and the loadbalancer. 9-arm and clang++-3. BLT4Linux is a Linux port of the popular Better Lua injecTor (BLT) modding framework for the First-Person co-op shooter PAYDAY 2. ©娜迦 charme版权所有. clang的相关参数,如CC,CLANG_TRIPLE等,不可通过export的方式告知内核(是个坑,它起不来作用). A few months ago I installed clang just to compile chromium because it always failed with gcc somewhere in the compiling process. The board comes with clang 3. Below is example for Nginx where you can choose between native CentOS GCC version, GCC 5. -mtune produces more generic code than -march; though it will tune code for a certain CPU, it does not take into account available instruction sets and ABI. Also see /arch (x64) and /arch (ARM). 背景 Travis CIに入っているImageMagickはどうもEXIFが扱えない模様で 自前でビルドしてこれを使用して、テストをすることにした。 たまたま、clangを使う設定をしており、ImageMagickのビルド自体. mk to use latest versionifeq($(TARGET_ARCH_ABI),x86) LOCAL_CFLAGS +=-ffast-math -mtune=atom -mssse3. 6, a problem must happen between openmp and clang. Emit Clang AST files for source inputs--emit-static-lib¶ Enable linker job to emit a static library. It is helpful to use the correct terminology. (-Oz) [CLANG-ONLY] - Optimizes for size even further than (-OS) (-Ofast) - Activate (-O3) optimization disregarding strict standard compliance. Using GCC -O3 option instead of -O2 can give minor (5-10%) performance improvements for things (mainly demos) that use. 5: warning: argument unused during compilation: '-mfpu=SSE2' I believe x86 uses "-msse2" for this, but since k8 already has SSE2 (like all 64-bit chips) it shouldn't be needed anyway. The -mtune command line option is no longer ignored for X86. -mtune=generic is the default with no -march or -mtune specified. This thread will show you how to set them up and build a Hello World example for SM64. For use in the Arch build system, makepkg exposes these environment variables as configuration options in makepkg. 1 on Mac OS-X Sierra. org services, including Bugzilla, is subject to our Code of Conduct. For the general LLVM release notes, see the LLVM documentation. Report on Profile Information. Xcode Apple Clang enable avx512. Phoronix: LLVM Clang Will Finally Honor "-mtune=" On x86/x86_64 CPUs Starting with LLVM Clang 12. (I’ve been told that -mtune in clang is a no-op, so I don’t know what the appropriate way. Finding: integration test 8 had an ℓ 2 norm difference of 10-6 even though it is an iterative algorithm stopping at 10-12. mp4仍会产生错误:初始化输出流0时出错:0-打开输出流编码器时出错#0:0-可能是不正确的参数,如bit_rate,rate,width或height. 5) don't have -mtune=power9 yet, so we revert to power8 for now. Clang commits. -clang our linker gets used. No GNU extensions or -pedantic warnings are allowed. x64 GCC and Clang both generate slower code for this use case when exceptions are enabled. It is helpful to use the correct terminology. Rust uses LLVM until a GCC front end is created, someone is working on it, so there is not much hope of improvement just now. rgb detection (from paq8p3) Modified WAV model (from paq8p_) Modified JPEG model (from paq8p2) Renamed bmpModel (24-bit) to im24bitModel +. paq8px is paq version based on paq8p with improved/added models/detection from paq8p3 DIFFERENCES FROM PAQ8P Added nestModel from paq8p3 Modified wordModel from paq8p3 Modified. 86 As you see the Rust version does very badly against even the slowest alternative. CFLAGS += -march=armv7-a -mtune=cortex-a8 -mfpu=neon -mfloat-abi=softfp #-mcpu=cortex-a8 and CFLAGS += -mtune=arm1176jzf-s -mfpu=vfp -mfloat-abi=hard I know the difference between -march and -mtunu, but what is the difference between armv7-a and arm1176jzf-s? if I'm looking at a new Pi how do I know what flags and argument I should use?. And recently, a new driver has appeared, clang-cl, which is a CL-compatible driver. This page lists all compiler options with which implementation e/ref of chacha8 was tested. 0, the instruction scheduling in LLVM/Clang could only accept a -march (called target-cpu in LLVM parlance) switch for both instruction set and scheduling. Version 12 adds support for -mtune (tune-cpu) for x86 only. -mtune=generic is the default with no -march or -mtune specified. Summary changed from Build errors with Qt 5. Hey guys, I am trying to figure out how to compile PCSX2 with an older GCC. (-Oz) [CLANG-ONLY] - Optimizes for size even further than (-OS) (-Ofast) - Activate (-O3) optimization disregarding strict standard compliance. Use of freedesktop. I will probably leave the cflags alone, thanks. Also see /arch (x64) and /arch (ARM). While I agree that defining _GNU_SOURCE from the gcc side is _a_ bug, I think this is also a glibc bug. 0 and has been removed now. Let me run through the basics of "-march" and "-mtune" that most experienced programmers will know about. Found in versions. Severity: serious Tags: buster, experimental. CC – path to Clang (C compiler). Thus, you can produce an executable that will work across a range of CPUs, but is specifically tuned to perform best on a certain model. 0 next year, the Clang compiler on x86/x86_64 CPUs will finally honor -mtune= in a similar manner to GCC. GCC has long allowed the -mtune= option on Intel/AMD processors for supporting microarchitectural tuning optimizations (scheduler model) to be applied independent of the CPU being targeted for instructions to. The default Apple Clang compiler does not support OpenMP, so using the default compiler would have disabled multi-threading. Other project commits. 在寻你机上编译通过后,吧执行文件导入arm-linux中,总是提示-bash: no such file or diractory,坑爹啊,虚拟机arm-linux-gnueabi-gcc-4. 12月の滋賀寒すぎでしょ。こんにちは、しゅもんです。 さっそくですが、みなさん「ライブラリ」はご存知ですか? 知っていても知っていなくても普段とってもお世話になっているはずです。. Here we describe the status of Clang in some detail, including major improvements from the previous release and new feature work. -fdata-sections. Svn head built on Dec 4, 2010: $ current-gcc -v Using built-in specs. 87 gcc -march=native -mtune=native 0. Clang’s abort code was 5 cycles faster than Clang’s exception code. Add further compiler support for GCC 4. Siril depends on a number of libraries, most of which should be available in your operating system if it is recent enough. The command below fro both GCC and Clang will: change directory to your downloads. In contrast to -mtune=cpu-type, which merely tunes the generated code for the specified cpu-type, -march=cpu-type allows GCC to generate code that may not run at all on processors other than the one indicated. They are "-march" and "-mtune". The -mtune=z13 option enables z13 specific instruction scheduling without making use of new instructions. Compiled for: x86_64-apple-darwin16. Added initial tags to support compilation with LLVM (clang) The current GCC versions on Summit (4. Clang will now default to using /usr/bin/ld on Solaris. 1 and soon GCC 8. " This resonated quite heavily with me. The progress bar shows the relative number of successes, fails, and errors across all tested hosts:. A few months ago I installed clang just to compile chromium because it always failed with gcc somewhere in the compiling process. c -mtune=generic -march=x86-64 -O2 -fverbose-asm # options enabled: -faggressive-loop-optimizations -falign-labels. Beyond the typical checks you should performroutinely during the development of your package, CRAN maintainers also checkfor “Memory access” in your C/C++ code. While I agree that defining _GNU_SOURCE from the gcc side is _a_ bug, I think this is also a glibc bug. It can be used with the (-g) flag for enabling debugging symbols. CC=clang-11), this doesn't work correctly and wrong compiler flags are set, leading to build errors. This is partly caused by the technical differences between LTO implementations discussed earlier. -mtune=thunderx2t99 generates code that runs poorly on ThunderX2 while the code generated by the more generic -march=armv8. Specifies the architecture for code generation on x86. 9 in Application. -march=cpu-type Generate instructions for the machine type cpu-type. 在寻你机上编译通过后,吧执行文件导入arm-linux中,总是提示-bash: no such file or diractory,坑爹啊,虚拟机arm-linux-gnueabi-gcc-4. It’s not just GCC that we can use to do our linking. Created on 2014-03-15 01:45 by Jeffrey. float64(5)>e or >= instead of >, or pi instead of e. Getting C code into N64 ROMs is easier than you might think using n64chain and armips. org/show_bug. So here is a quick way to do that I use when I need to upgrade it or put it on a new machine. Implementation notes: amd64, intelnuci7, crypto_stream/aes128ctr Computer: intelnuci7 Architecture: amd64 CPU ID: GenuineIntel-000806e9-bfebfbff. It was not faulty hardware causing that issue. The goal of the Centmin Mod menu based installation was to make it easier to manage without the aid of a control panel. for example, gcc throws the following error: cc1plus: error: unrecognized argument in option '-march=native' cc1plus: note: valid argume. xHost、QxHost. GCC has long allowed the -mtune= option on Intel/AMD processors for supporting microarchitectural tuning optimizations (scheduler model) to be applied independent of the CPU being targeted for instructions to enable that is set via the -march=. First, we need to install the software required to build OpenBLAS, which is the BLAS library that we’re going to use. 6, a problem must happen between openmp and clang. Conversely when compiled on my x86-64 PC I get this:. Using -mtune=native produces code optimized for the local machine under the constraints of the selected instruction set. Integration Test 8 from MFEM. regcall、Qregcall. Here's the simple of it for the impatient: Using the AWS CentOS7 AMI with a few tweaks. Man Page or Keyword Search: Man. in files, and created a script to relocate gcda files where they chould be Actual results: N/A Expected results: N/A. The problem occured after the update from 3. Clang 已更新至 3. Using clang with portage. But now I set linker-optimization for clang and the pre-compilation checks fail. I would like know if there is some command to show what switches are enabled by march and mcpu for each CPU. Specifies the architecture for code generation on x86. 6, a problem must happen between openmp and clang. Compiled for: x86_64-apple-darwin16. Clang/LLVM toolchain is used in PS4 also. 3不能用,资料上说是他们用的是arm-linux-gnueabi-gcc-4. In this case, clang outputs all identifiers starting with co available in namespace std. Synopsis gcc [-c|-S|-E] [-std=standard] [-g] [-pg] [-Olevel] [-Wwarn] [-Wpedantic] [-Idir] [-Ldir. If you have trouble bootstrapping from older versions of FreeBSD, try WITHOUT_CLANG to bootstrap to the tip of stable/10, and then rebuild without this option. What is DW_AT_producer?. The -mtune=arch13 option enables arch13 specific instruction scheduling without making use of new instructions. Clang recently got a Visual C++ compatible mode so you can use it for Windows platform development also so you can link directly programs to Visual C++ Redistributable Packages. Add further compiler support for GCC 4. -mtune produces more generic code than -march; though it will tune code for a certain CPU, it does not take into account available instruction sets and ABI. Consequently, both need to be updateed manually if you want to run software that ues parallel computing (like stacks). Normally for gcc I would use: CFLAGS="-O3 -pipe -march=pentium-m -mtune=pentium-m" However as per the subject of this message it seems Clang doesn't recognize this target and throws a series of similar errors: error: unknown target CPU 'pentium-m' note: valid target CPU values are: nocona, core2, penryn, bonnell, atom, silvermont, goldmont-plus. BLT4Linux is a Linux port of the popular Better Lua injecTor (BLT) modding framework for the First-Person co-op shooter PAYDAY 2. Created on 2014-03-15 01:45 by Jeffrey. And I modified my script to use: CFLAGS='-O3 -march=x86 -mtune=pentium-m' Unfortunately clang complains again: error: unknown target CPU 'x86' note: valid target CPU values are: (same old list) I hope someone can shed some light on all this. Qcxx-features. Emit Clang AST files for source inputs--emit-static-lib¶ Enable linker job to emit a static library. 8svn(r256229,版本 2812033)。 将默认的 GCC/X86 标记 -march= 和 -mtune= 从 pentiumpro 和 generic 更改为了 i686 和 atom. 0 architecture, but optimize for cyclone". 0, the instruction scheduling in LLVM/Clang could only accept a -march (called target-cpu in LLVM parlance) switch for both instruction set and scheduling. Do not use -mcpu on x86 or x86-64 systems, as it is deprecated for those architectures. Clang and GCC have two switches, -mcpu and -march, to enable some optimizations especific for the CPU selected. sdkでビルドしました。Intel Mac版、第1世代Core i以降のCPU向けです。 thunderbird-17とseamonkey-2. GCC Bugzilla – Bug 69471 "-march=native" unintentionally breaks further -march/-mtune flags Last modified: 2020-03-12 11:59:03 UTC. exe and clang++. After a trying to submit phylobaseto CRAN, I learned a lot about the quality checks that go into a package beforebeing available to the public. For high optimzation, try: clang -O3 -march=native -mtune=native. When you invoke GCC , it normally does preprocessing, compilation, assembly and linking. OpenFive is solution-centric and uniquely positioned to design processor agnostic SoCs and deliver high-quality silicon. I don't know how to explain clang -cc1 properly but the word that matters is frontend. I think I concluded that it'll find it if arm-linux-gnueabi-as is on the path, but I'm not certain. For details about these options, see the GNU Compiler Collection online. The goal of the Centmin Mod menu based installation was to make it easier to manage without the aid of a control panel. ©2020 The Qt Company Ltd. Centmin Mod was created and tested to work as standalone Nginx, PHP-FPM and MariaDB MySQL stack without the use of any control panels. Clang commits. Clang/LLVM toolchain is used in PS4 also. LLVM Clang Will Finally Honor "-mtune=" On x86/x86_64 CPUs Starting with LLVM Clang 12. Let's examine the script install-clang. How we collect and use information is described in our Privacy Policy. $ sudo apt-get update $ sudo apt-get install clang libicu-dev libcurl4-openssl-dev libssl-dev 次に、公式サイトから最新のSwift4. 37 regression). i have a problem when compile objective-c source code on windows platform. 0 Compiled on: x86_64-apple-darwin16. A Coding blog. 1+ packages from CRAN development tools website; Install Mac OSX command like tools by typing xcode-select --install and then choose install. -march, -mtune これは特定のプラットフォームでのみサポートされているオプションで、特定のCPU向けに最適化する。とくに、いくつかプラットフォームで、-march=nativeとすると、コンパイル環境のコンピューターのCPUが判定され、そのCPU向けの最適化を行う。. -mtune=generic is the default with no -march or -mtune specified. perf python: Fix clang detection when using CC=clang-version Currently, the setup. I thought I understood them, until now. GCC has long allowed the -mtune= option on Intel/AMD processors for supporting microarchitectural tuning optimizations (scheduler model) to be applied independent of the CPU being targeted for instructions to. This thread will show you how to set them up and build a Hello World example for SM64. Starting with LLVM Clang 12. It looks like part of Bug 1371485 is to vendor gyp elsewhere in tree at which time we can complete cleaning this up. While it is a rewrite of the C++ part of BLT, it uses the same Lua code and is compatible with 90% of the PAYDAY 2 lua mods that can be found online. 02をダウンロードします。 $ tar xzvf swift-4. Note that pi. 『Using Clang and LLVM Toolset』を参照してください。 Rust Toolset 1. ppm compression added (from paq8p3). The following options control the dialect of C that the compiler accepts:-ansi. 59 x86 Options. /arch (x86) 10/01/2019; 4 minutes to read +1; In this article. For high optimzation, try: clang -O3 -march=native -mtune=native. 最近いくつかの新しいサーバーを購入し、memcpyパフォーマンスが低下しています。 memcpyのパフォーマンスは私達のラップトップと比較してサーバー上で3倍遅くなります。 サーバーの仕様 シャシーとモボ:SUPER MICRO 1027GR-TRF CPU:2倍のIntel Xeon E5-2680 @ 2. Using clang with portage. Please note, however, that many of Gentoo packages still don't build with clang and a few don't work correctly after being built. -march=i686 enables internally -mmmx, -msse and so forth. Although Apple's clang just indicates openmp is not supported, llvm's newer clang versions pass the openmp test, but in the end are misconfigured by inserting -gomp into the pkg-config link flags. compile process ignores rpm mtune parameter #270 __inline is not defined in Sun C #271 Assertion global_state failed on --list-fingerprint #272 servers complain that they're unnamed too soon #273but need_to_mirror=1. I think an argument could be made that this should be filtered out in the PKGBUILD, since it is a stock makepkg. Maintained by a separate group and applied to the main wine source, before being compiled. cgi?id=1301882. g++ -DNDEBUG -g -O2 -D__STRICT_ANSI__=1 -fPIC -ffunction-sections -fdata-sections -maes -mpclmul -mtune=core-avx-i -arch x86_64 -arch i386 -DCRYPTOPP_DISABLE_ASM. 04 was the fastest by about 25% advantage over g++ 4. org services, including Bugzilla, is subject to our Code of Conduct. (-Oz) [CLANG-ONLY] - Optimizes for size even further than (-OS) (-Ofast) - Activate (-O3) optimization disregarding strict standard compliance. 0 architecture, but optimize for cyclone". Issues with web page layout probably go here, while Firefox user interface issues belong in the Firefox product. 7 and clang (needs C++11) The problem is fixed for OMEdit and OMPlot (including qwt) by the commits 19a274 and f907e8 , respectively. The Linux kernel, however, is a completely different beast with its own custom build system, Kbuild. Clang recently got a Visual C++ compatible mode so you can use it for Windows platform development also so you can link directly programs to Visual C++ Redistributable Packages. Fixed Clang 3. Merged with 873200. which is not very helpful. For high optimzation, try: clang -O3 -march=native -mtune=native. 背景 Travis CIに入っているImageMagickはどうもEXIFが扱えない模様で 自前でビルドしてこれを使用して、テストをすることにした。 たまたま、clangを使う設定をしており、ImageMagickのビルド自体. The compiler options -march sets the overall architecture family and CPU features to be targetted, and the -mtune option sets the specific target for tuning. Introduction The Cortex-A76 codenamed "Enyo" will be the first of three CPU cores from ARM designed to target the laptop market between 2018-2020. LD – linker. Note that the C++17 feature tests are incomplete and are subject to change in future R versions as compiler support for the standard improves. android / platform / external / clang / 7a0c064770355a4918df69f95de8dea6338a59a2 /. ARM already has a monopoly on handheld devices, and are now projected to take a share of the laptop and server market. 2-RELEASE-ubuntu16. 14は、clang-3. As an occasionally packager coming from gcc and clang, I find the ability to specify separate -march and -mtune options in these compilers a nice thing. CXX – path to Clang++ (C++ compiler). 0 next year, the Clang compiler on x86/x86_64 CPUs will finally honor -mtune= in a similar manner to GCC. It can be used with the (-g) flag for enabling debugging symbols. The -mtune command line option is no longer ignored for X86. 『Using Clang and LLVM Toolset』を参照してください。 Rust Toolset 1. 0, the instruction scheduling in LLVM/Clang could only accept a -march (called target-cpu in LLVM parlance) switch for both instruction set and scheduling. This patch supports -mtune option via -mcpu. There are some indications on how to dothis in the “Writing R Extensions” manual. I thought I understood them, until now. linux 下arm编译问题,no such file or diractory_course. Options Controlling C Dialect. for example, gcc throws the following error: cc1plus: error: unrecognized argument in option '-march=native' cc1plus: note: valid argume. Today, I am excited to announce the launch of OpenFive, a self-contained and autonomous custom silicon business unit of SiFive, Inc. Issues with web page layout probably go here, while Firefox user interface issues belong in the Firefox product. The "overall options" allow you to stop this process at an. His research is focused on software performance and data engineering. "Well, at least in clang (3. For use in the Arch build system, makepkg exposes these environment variables as configuration options in makepkg. x86 uses -march and -mtune instead of -mcpu. マルチバイト文字をサポートするかどうかを指定します。 multiple-processes、MP. 4-1 (tags/RELEASE_34/final) (based on LLVM 3. 2 on Ubuntu 13. オプションは分割されていなければなりません。すなわち ` -dr ' は ` -d -r 'とは異なった扱いを受けます。 ほとんどの ` -f ' と ` -W ' 形式のオプションには、 -f name と -fno-name (または -W name と -Wno-name) の形式の、対照的な表現があります。. Do not use -mcpu on x86 or x86-64 systems, as it is deprecated for those architectures. -- The C compiler identification is Clang 3. cargo calls clang with --target=x86_64. In the timings, GCC’s abort code was 2 cycles faster than GCC’s exception code. makepkg es un script que automatiza el proceso de construcción de paquetes; este puede descargar y validar archivos fuente, resolver dependencias, configurar los parámetros de tiempo de compilación, compilar las fuentes e instalarlo dentro de un root temporal. -march, -mtune これは特定のプラットフォームでのみサポートされているオプションで、特定のCPU向けに最適化する。とくに、いくつかプラットフォームで、-march=nativeとすると、コンパイル環境のコンピューターのCPUが判定され、そのCPU向けの最適化を行う。. -fdata-sections. Clang is the most known front end for LLVM which is a C/C++/ObjC/Swift compiler. LLVM Clang 9. They roughly correspond to the ones for gcc, but are not identical. Starting with LLVM Clang 12. An icon used to represent a menu that can be toggled by interacting with this icon. Clang is the most known front end for LLVM which is a C/C++/ObjC/Swift compiler. 5, while Clang is approximately 25% slower. After a trying to submit phylobaseto CRAN, I learned a lot about the quality checks that go into a package beforebeing available to the public. Thus, you can produce an executable that will work across a range of CPUs, but is specifically tuned to perform best on a certain model. This can be used to request microarchitectural optimizations independent on -march. The HTML report generated by plprofiler is a self-contained HTML document, and it gives detailed information about the PL/pgSQL function execution. Let's examine the script install-clang. Yes, the nightly build is broken in a similar, but different way. 0 and Clang 5. clang-tidy's modernize-user-trailing-return-type gained support for C++20 concepts and decltype. Xcode Apple Clang enable avx512. At least in theory, it's a. The problem occured after the update from 3. The -mtune command line option is no longer ignored for X86. Note that the C++17 feature tests are incomplete and are subject to change in future R versions as compiler support for the standard improves. A short guide to modify or create a new tool collection for C/C++ in NetBeans IDE 8. Additionally, clang-cl contains a gas-compatible assembly syntax parser, so assembly files that you pass on the command line are parsed by clang-cl and therefore you can now write a single assembly syntax that works on Unix-y and Windows platforms. LLVM Clang Will Finally Honor "-mtune=" On x86/x86_64 CPUs Starting with LLVM Clang 12. $ sudo apt-get update $ sudo apt-get install clang libicu-dev libcurl4-openssl-dev libssl-dev 次に、公式サイトから最新のSwift4. Clang GCC compatible C, C++, Obj-C, Obj-C++, OpenCL, compiler $ gcc ­c ­O2 ­mtune=native ­fomit­frame­pointer ­msse2 ­ffast­math oggenc. If you get errors that your compiler cannot produce code, you should check your flags, e. This is a clang bug and has been reported to their team. 1 to only enable exception by default for C++, not for C. AR – binary for working with archives (packing/unpacking). in clang, -mtune option alias to -mcpu. Simple C and Pascal raytracer benchmark About. out uses VFP but the other object doesn’t — I haven’t reinserted icu4c into my build process yet, but passing “-mfloat-abi=hard” appears to get clang working with a dummy file. They roughly correspond to the ones for gcc, but are not identical. See full list on wiki. Also see /arch (x64) and /arch (ARM). Here's the simple of it for the impatient: Using the AWS CentOS7 AMI with a few tweaks. Additionally -mtune supports: -mtune=generic, and -mtune=intel, it might be interesting to see what is a difference between -march=znver1 and -mcpu=znver1 -mtune=generic,. Hello *, after compiling clang/safecode in cygwin (installed in home/uid04950/WORK/LLVM_INSTALL) I tried to compile the test program: #include "stdio. As for the famous "-O3 -funroll-loops -ffast-math" it will just lead to massive sized binaries that take forever to compile, and longer to load once compiled, and unless I have an large SSD and 8GB of RAM, (at that point who needs the performance anyway?). -march= implies -mtune=. Similarly, the warning is emitted in sage: numpy. 04 was the fastest by about 25% advantage over g++ 4. in files, and created a script to relocate gcda files where they chould be Actual results: N/A Expected results: N/A. conf: Mark CLANGSDK 0 by default: Khem Raj: 2020-04-02: libsdl2: Do not use internal asm: Khem Raj: 2020-03-28: clang: Fix default resources directory when cross compiling: Jim. OpenFive is solution-centric and uniquely positioned to design processor agnostic SoCs and deliver high-quality silicon. AS – assembler, we will use Clang as assembler as well. The bootstrap process from older version of current is a bit fragile. So some projects are switching from gcc to clang as default compiler. gnustep foundation framework and so on). I think I concluded that it'll find it if arm-linux-gnueabi-as is on the path, but I'm not certain. 02をダウンロードします。 $ tar xzvf swift-4. - Source code data types are not always preserved by clang CC1 - Clang CC1 changes procedure’s signature to be conformant with the target Application Binary Interface (ABI) - In order to generate OpenMP pragmas/clauses, Parallware needs to determine the signature of all the source code procedures. 0 was in last with only coming out ahead in five of the benchmarks. some tool-chains (e. (I’ve been told that -mtune in clang is a no-op, so I don’t know what the appropriate way. Has anyone recently (in 2012) done any serious benchmarking of these compilers?. in clang, -mtune option alias to -mcpu. 70 Ghz メモリ:8x. Timezone warnings on package install in R-alpha. いやー、もう8月も終わりに近づてきましたね〜! 皆さんはどっか行きましたか? 自分はお盆休みもバイクをモリワキ…. Other project commits. This page lists all compiler options with which implementation e/ref of chacha8 was tested. This page lists all compiler options with which implementation ref of aes256 was tested. I don't know how to explain clang -cc1 properly but the word that matters is frontend. CLANG アプリケーションを -march オプションまたは -mtune オプションでコンパイルする場合、IA-32 アーキテクチャーまたはインテル® 64 アーキテクチャーで実行されるアプリケーション向けのインテルの -x オプションまたは -ax オプションの使用を検討して. Clang has been updated to 3. When you run x86_64-apple-darwin13. Svn head built on Dec 4, 2010: $ current-gcc -v Using built-in specs. 0-- The CXX compiler identification is Clang 3. Other project commits. 1 , which is invoked by xlclang/xlclang++. 0 and gcc 7. 1? https://developer. The options passed to a C/C++ compiler (e. log相关内容呢 configure:5874: gcc -c -pipe -mtune=nocona -march=nocona -O4 -msse -msse2 -msse3 -fomit-frame-pointer -mfpmath=sse -pipe -mtune=nocona -march=nocona -O4 -msse -msse2 -msse3 -fomit-frame-pointer -mfpmath=sse conftest. No GNU extensions or -pedantic warnings are allowed. Clang worked just fine, I didn't use linker-optimization though. Clang/LLVM toolchain is used in PS4 also. 在寻你机上编译通过后,吧执行文件导入arm-linux中,总是提示-bash: no such file or diractory,坑爹啊,虚拟机arm-linux-gnueabi-gcc-4. We need to fix Clang support later (by change order of option checking). gnustep foundation framework and so on). 7 and clang (needs C++11) The problem is fixed for OMEdit and OMPlot (including qwt) by the commits 19a274 and f907e8 , respectively. AFAICT, Apple have not released the source-code for version 351. +- The __has_attribute feature test is now target-aware. seen on freeBSD+clang, OS X+clang and linux+clang. -mtune = nativeは-O2 / -O3では機能しませんでした( `ld`は狂ったように爆発しました) シンボルの再定義エラー)、生成されたコードが私のマイクロアーキテクチャ用に調整されているとは思わない。 SSEでこれをわずかに速くする方法があるかもしれません。.