Building Clang On Linux

bashrc (ccache is used automatically assuming it is installed and configured correctly) -- autogen will warn you if this isn't set. Introduction Clang is usually quite straightforward to use, but only for simple C/C++ programs that do not have a complex build process. BUILD files that expose these repositories as filegroups and establish their visibility across the build. But this is only talking about normal builds, not PGO, but we should already start by switching the normal builds. A short explanation of the directory structure of compiler-rt: For testing it is possible to build a generic library and an optimized library. I allready build clang(3. I don't seem to have the BlocksRuntime available (when I run clang with the `-lBlocksRuntime` flag I get a message saying its missing). Building Apache log4cxx. EDIT: I had to add a few lines to the package() function to actually move the libraries but I have managed to successfully restore packages following TioDuke's steps. OpenSSL's build system does not rely upon autotools or libtool. 0 20140604 Clang 3. I have not and I think I know why. If you would like to use one of the other vendors you will need to install their software separately before building. Hi, I'm new to LLVM World! but I was able to build hard-float ARM binaries on an x64 Linux host and run them on a Panda Board. On Mac, the easiest way to upgrade to an atom-clang compatible LLVM version is with MacPorts, Homebrew, or directly from LLVM. Does anyone have a version of build/linux. IMPORTANT!. Set Clang location automatically. The following steps were done on Alpine Linux image using Windows -hosted Docker (image alpine:latest) but all of it shall be applicable to other operating systems. According to FreeBSD, from version 10 they use Clang/LLVM instead of gcc. To run the build task that you defined in tasks. #1 Continuous Delivery service for Windows. Installation. 2) with MSVC and MinGW succesfully. My guess is that this file is coming from the clang 3. The first step was packaging Clang for the host, as it is necessary to build libclc because this library is written in OpenCL C and some functions are directly implemented in LLVM IR. CMake: Building with all your cores. Clang and LLD drivers can emulate the drivers of other toolchains. To have it listed, I need to de-select the "Show project types and toolchains only if they are supported on the platform". Linux people refuse to look outside their vacuum chamber. Start a command line on your Windows host and go into the source. clang still depends on gcc for some stuff, like gnu assembler. With some patches the Linux kernel can be built using clang/LLVM for ARM32, but it is not booting with those patches. It is however possible to use the system one, provided it's accessible from the PATH environment variable. This plugin allows you to execute Clang scan-build against Mac or iPhone XCode projects or other scan-build compatible build tools. 04,在网上看到说 clang 编译器不错,然后就照着官网下载源码然后安装,就是 Clang-Getting Started 那个,但是 make 阶段等了两小时最后总是出错,试了好几次了,后来直接 sudo apt install clang 发现也能安装,而且可以用,重要的比官网的简单多了就两分钟的事,我试了编译 clang test. information about building Linux with Clang ! Automated Build Framework ! Documented in Wiki ! Git repository ! Current support for: » ARM Cortex A9 (Versatile Express) » Qualcomm MSM ! Easy to add new arch/platforms ! Anyone welcome to participate, would especially like to see x86 and MIPS support. That is exactly what CppStyle does. Swap – Linux http://stackoverflow. To do so, you can override the defaults by writing another. The actual command to execute is stored in makeprg option. For each row, Travis CI C builder will export the CC and CC_FOR_BUILD env variables to point to either gcc or clang. GNUstep seeks to be source code compatible with Cocoa, it can thus be used to develop and build cross-platform applications between Macintosh (Cocoa), Unix (Solaris) and Unix-like (GNU/Linux and GNU/Hurd, NetBSD, OpenBSD, FreeBSD) platforms as well as Windows. The clang v4 Linux-x86_64 cross compile toolchain can be automatically set up with this Powershell script Install-LinuxToolChain. Grab appropriate clang 3. Icecream works by sending an. The first step was packaging Clang for the host, as it is necessary to build libclc because this library is written in OpenCL C and some functions are directly implemented in LLVM IR. After you configure and build the library, you should always perform a make test to ensure the library performs as expected under its self tests. --target cppcheck; Running clang-tidy (Linux only) The clang-tidy executable is shipped along with the osquery toolchain, and it is the recommended way to run it. 2016 18:04, Benson Muite wrote: > Hi, > > Am trying to build clang and llvm version 3. At this point we want to set up the build system. 1 and a latest version of gcc (4. Regards, Dmitry. 5, brew install llvm --with-clang --with-asan, etc. After you configure and build the library, you should always perform a make test to ensure the library performs as expected under its self tests. qemu-iotests is run from the toplevel build directory with make check-block. It is sometimes beneficial to build separately from the full LLVM build. clang-format file in a subfolder. Gentoo wiki contributors encourage beginners to consult the Help page before making edits. 2 is supported. libc++ is an implementation of the C++ standard library, targeting C++11, C++14 and above. For instance, my company has products on Arm, x86_64, and AArch64, and our development PCs are x86_64. CMake: Building with all your cores. As the name of this project implies, we want a native clang, not an ugly wrapper. For each row, the Travis CI C++ builder will export the CXX and CXX_FOR_BUILD env variables to point to either g++ or clang++, and correspondingly export the CC and CC_FOR_BUILD env variables to point to either gcc or clang. See Open Bugs in This Product. com, it appears that scan-build has been split into a separate clang-tools package. awesome - saved me a bunch of time - using the clang front end binaries for mingw32 x86 is not well documented. (Windows and Linux) The PATH environment variable. This implies that the sections covering the Hardware configuration and Cross-Compilation are identical, but the sections covering. The registered trademark Linux® is used pursuant to a sublicense from LMI, the exclusive licensee of Linus Torvalds, owner of the mark on a world-wide basis. I do not have a Windows computer. The engine developers use Gold as the linker on Linux, so do the same. How to Compile Linux Programs Under Windows with Cygwin By Gary Sims - Posted on Jun 12, 2014 Jun 11, 2014 in Linux , Windows Windows and Linux are two very different systems, and as such, it often isn't easy to port programs written for one to the other, especially when dealing with GUI programs. sh script. py to skip building Clang for Windows. For packaging for Linux platforms (both x86_64 and ARM) the CrashReportClient is. How to Build an iOS Toolchain for Linux (Debian 7). 04,在网上看到说 clang 编译器不错,然后就照着官网下载源码然后安装,就是 Clang-Getting Started 那个,但是 make 阶段等了两小时最后总是出错,试了好几次了,后来直接 sudo apt install clang 发现也能安装,而且可以用,重要的比官网的简单多了就两分钟的事,我试了编译 clang test. which is the wrong file. 10 Artful Aardvark. OpenSSL's build system does not rely upon autotools or libtool. According to FreeBSD, from version 10 they use Clang/LLVM instead of gcc. It has resulted it patches to the build system, kernel code, and llvm/clang it self. In order to run clang-build, you only need Clang and Python3. The Clang project includes the Clang front end, a static analyzer, and several code analysis tools. In this article, I will show you how to install Clang with libc++ on Ubuntu Linux and Windows System for Linux. Debian-based: sudo apt-get install libfreetype6-dev libfreeimage-dev libzzip-dev libxrandr-dev libxaw7-dev freeglut3-dev libgl1-mesa-dev libglu1-mesa-dev doxygen graphviz python-clang-4. Other arches should build with clang-8 (technically x86_64 will build pre 4. cb-clang contains the workspace and project files for the Linux Clang Compiler. As the name of this project implies, we want a native clang, not an ugly wrapper. This blog series will introduce the clang-tidy utility from the Clang/LLVM project and show how to use it to automatically refactor C++ source code and integrate with your build system, as well as how to use the tool on other platforms than Unices. So instead i am using clang to build python. As of Chrome 64, Chrome for Windows is compiled with Clang. I'm trying to move away from gcc to clang, and bdb is one of few packages that doesn't build with clang and its runtime libraries. Template:Rating This page contains information about the effort to build UE4 natively on a Linux host. 13 on a system running scientific linux. OpenBSD is also now building the kernel/userland and most of the ports tree with Clang for i386/amd64 and arm64. Build C++ with Clang. 36 from kernel. Hi, I am beginning to use Clang 3. I noticed a strange behavior. Updated on 24 September 2019. Search for clang-format in your repositories. 14 instead of the one inside the clang toolchain. Skip to content. I was able to compile my lib for x86, but not for any other architecture,here are logs for x86 and x86_64 builds:. nbm file) and add it as a plugin: Right-click the mytoolchain module project and select Create NBM. com, it appears that scan-build has been split into a separate clang-tools package. 0 so older Clang's may work depending on your target arch/tree/configs. However, at the prompting of Apple who was looking for a faster compiler, as well as one unencumbered by the GPL 3 license, the clang project was begun in 2007. This project implements the Intel Cilk Plus language extensions in the Clang how to build Clang/LLVM/Compiler-rt related to the compiler on Linux. Unfortunately, scan-build (and its scan-view companion) are not installed by default with clang. - Yang On 07/17/2014 09:44 PM, Yang Chen wrote: I don't know Let's see if we could build with gcc 4. Build C++ with Clang. clangd is based on the clang C++ compiler, and understands even complex C++ code. You can optionally try building the rest of the projects, but Metashell does not need them. Visual Studio now supports debugging Linux apps; Code editor now open source A new build has also been published, adding an extension mechanism to the editor. I don't think dolphin "required" clang 3. building with. In the workspace directory root, make sure that a BUILD file is present. Set a specific GCC version to use GCC on macOS. 8 - so much as that's the only one it's been tested on. Fedora ARM. com/archives/917#respond Thu, 31 Aug 2017 16:24:13 +0000 http://cxuesong. Since then, the WSL team has been hard at work, dramatically improving WSL's abilty to run an ever increasing number of native Linux command-line binaries and tools, including most mainstream developer tools, platforms and languages, and many. It's real Ubuntu, without the Linux kernel, but with all the software packages that don't need a graphical interface. scan-build provides the --use-cc and --use-c++ options to hardwire which compiler scan-build should use for building your code. For instance, my company has products on Arm, x86_64, and AArch64, and our development PCs are x86_64. 3 and as such are quite old, but stable and well tested. In the case of linux, this means make. There are instructions for other platforms linked from the get the code page. Building with CMake Similar results. Trouble shooting. org website. cb-clang contains the workspace and project files for the Linux Clang Compiler. I'm trying to move away from gcc to clang, and bdb is one of few packages that doesn't build with clang and its runtime libraries. 3 Should Be Close To Building Linux Kernel. Build scripts for all kinds of additional software for Slackware 14. CMake: Building with all your cores. On macOS, gcc is an alias for clang, and g++ is an alias for clang++. Building Qt with -xplatform android-clang in GNU/Linux fails Building Qt with -xplatform android-clang in GNU/Linux fails Ok, found many problems with the build. llvm-config is commonly installed with LLVM and Clang on Linux systems, and also on macOS if LLVM is installed using Brew. We now use Clang to build Chrome for all platforms it runs on: macOS, iOS, Linux, Chrome OS, Android, and Windows. but I have faced this reality more than I want to. I was able to get clang working on an existing MINGW install by copying the content of the clang (bin/, include/ ) to the mingw "folders". To test for SSE 4. It's real Ubuntu, without the Linux kernel, but with all the software packages that don't need a graphical interface. Take care with cmake. 2 will ship with it as the default system compiler. For a long time, the LLVM project used the various GCC front-ends with their compiler. The Clang project includes the Clang front end, a static analyzer, and several code analysis tools. You can also use Valgrind to build new tools. If we treat clang-tidy as a compiler, then we should be able to use a build-distribution tool to distribute our refactoring task on the network. 0 using the command line. In this article, I will show you how to install Clang with libc++ on Ubuntu Linux and Windows System for Linux. exe /O /DWin32, etc. Installing clang. The AArch64 state has been in better shape in recent years with multiple Arm vendors using Clang as their default compiler including to build the Linux kernel, but finally in 2019 the mainline Clang can build mainline Linux x86_64. The ROS 2 build will automatically build support for vendors that have been installed and sourced correctly. org website. Given that Linux fans generally weasel out of criticism by pointing out that the criticism aimed usually at highlevel components of a Linux system don’t apply to “Linux” (which is the kernel), I’m feeling obliged to point out that Clang “can build a kernel” for quite some time now. Check out this page for more reasons why clang provides better compiler diagnotics. a system which is already set up to build your software in. For each row, Travis CI C builder will export the CC and CC_FOR_BUILD env variables to point to either gcc or clang. It should be enabled by default on CentOS 7, but in case you don't have it enabled, I will show you how to enable it. Likewise, Visual Studio can use Clang running on a Mac to build projects targeting iOS. $ sudo apt install. You can now use clang-specific SCons options. Erlang/OTP should be possible to build from source on any Unix/Linux system, including OS X. OS: AuroraUX, DragonFlyBSD, FreeBSD, NetBSD, Linux, Darwin. However, at the prompting of Apple who was looking for a faster compiler, as well as one unencumbered by the GPL 3 license, the clang project was begun in 2007. BUILD files that expose these repositories as filegroups and establish their visibility across the build. Comment on attachment 8551377 Update the clang build script for the most recent clang Review of attachment 8551377: ----- Please don't land this without landing the corresponding tooltool manifest change. gz Make sure to check this. From Xcode 4. Last June, I wrote about enabling building Firefox with clang-cl. A protip by killwing about linux, llvm, and clang. I have problem. Clang Built Linux is a collection of efforts to get the upstream kernel building with Clang. Many Chromium developers already used clang on Linux. Compiler/Build dependencies. Build Steps Overview. /clang -E --target=powerpc64le-linux -mlittle-endian -o /dev/null - Default ABI: elfv2 Don't specify -mabi when building with clang to avoid the build error. Otherwise, you can either download pre-built LLVM/clang binaries or build the source code from:. The following steps were done on Alpine Linux image using Windows -hosted Docker (image alpine:latest) but all of it shall be applicable to other operating systems. com/questions/5682854/why-is-the-linker-terminating-on-me-when-i-build-clang — December 13, 2016. The OpenMP subproject of LLVM contains the components required to build an executable OpenMP program that are outside the compiler itself. Trouble shooting. originally posted by magreenblatt on 2015-02-05T18:39:07. Regards, Dmitry. txt files will not immediately allow you to build your project. Clang is also provided in all major BSD or GNU/Linux distributions as part of their respective packaging systems. I am trying to make a new C++ Project that uses the LLVM with Clang (Linux) toolchain. Building Clang and Working with the Code On Unix-like Systems. Clang is my compiler of choice as I found it to be the fastest for development and it works on all desktop platforms. Clang Compiler. clang-format file in a subfolder. Both GNU/Linux and Windows toolchains are built on GNU/Linux machines. The Linux kernel can be built with clang/LLVM for X64 and ARM64. I'm just assuming absolutely *no one* would ever have a problem to build LLVM and Clang on Linux and Mac, right? I'm not a Windows fanboy, but really like vim and Visual Studio, therefore I develop on Windows whenever I can. gov Tue May 6 11:15:17 CDT 2014. This post is a followup to Building GCC on Linux, and in it I’m going to describe a set of scripts I wrote for building Clang on Linux. All compiler folders are in the "build" directory. I am newbie to linux kernel build, downloaded linux-2. At this time, cross-compiling is only supported for Windows, and Mac users currently have to resort to native compiling. July 22, 2014 Multiple Mesos build configurations using Docker. 2 directory, I did: cd swift utils/build-script -t -R This will build LLVM, Clang, and Swift. Clang with libc++ represents today a viable alternative to GCC for C and C++ programmers. OPTIONS Stage Selection Options. However, when I get to choose the toolchain, LLVM is not listed. Don't try this at home (do it at your own risk). Fully build the Linux kernel for multiple architectures, using the Clang/LLVM toolchain Discover LLVM/Kernel issues early and find fixes quickly across both communities Upstream patches to the Linux Kernel and LLVM projects Bring together like-minded developers Enable the kernel community to do more in depth analysis of the kernel code. 1 with BUILD_SHARED_LIBS=ON, which failes with the current llvm-SlackBuild. If you want to use the new module for the GNU_tuned tool collection in your regular IDE, you can create a binary (a. We now use Clang to build Chrome for all platforms it runs on: macOS, iOS, Linux, Chrome OS, Android, and Windows. The toolchains scratchbox ships with are based on GCC 3. So I thought, give it a try and compile a kernel for my ARM based board of choice. These variables are ignored on Windows. Fedora ARM. I suggest you compile on a Linux host instead (using a VM for example). Currently, this only works on Linux and Mac. For the latest version of this doc, If building on Linux, pass --no-build windows to build. Also, the Clang mailing list is very active and helpful if you ever find yourself stuck on something. IMPORTANT!. To compile Mixxx using Clang 3. Two release goals have been proposed for Jessie: debian/rules honor CC and CXX. In an open-source community, for a build platform to be supported, someone has to step up and support it. Build Link to resources for building applications Clang/LLVM, Go, and Rust compilers for Red Hat Enterprise Linux. OpenMP®: Support for the OpenMP language. Additionally, we support, test, and provide libraries and toolchains for the Linux-x86_64 platform. A quick preprocessing step will convert your CMakeLists. To use the newly installed compiler, add the following to your environment. clang still depends on gcc for some stuff, like gnu assembler. After building the library, copy it to /usr/lib(or because this is 64bit, I put it in /usr/lib64) and create the needed symlinks. Linux kernel 4. /configure CC=clang LD=gcc && make CC=clang LD=gcc. Given that Linux fans generally weasel out of criticism by pointing out that the criticism aimed usually at highlevel components of a Linux system don’t apply to “Linux” (which is the kernel), I’m feeling obliged to point out that Clang “can build a kernel” for quite some time now. Think of SCons as an improved, cross-platform substitute for the classic Make utility with integrated functionality similar to autoconf/automake and compiler caches such as ccache. And this process is done in the AOSP tree. I will have to try again following your steps. From clang 3. We now use Clang to build Chrome for all platforms it runs on: macOS, iOS, Linux, Chrome OS, Android, and Windows. These variables are ignored on Windows. Information about building with Clang. Motivation There are two reasons for the switch. For certain types of apps, this can be helpful so you can reuse existing code libraries written in these languages, but most apps do not need the Android NDK. trouble building clang with libc++ on linux. Again, this is not a Visual Studio Express 2017 installer. In this post I'll demonstrate how to build a freestanding libc++ on Gentoo. If you are building OpenSSL 1. This is a guide to compiling Dolphin using the cmake build system. 0 and above, then you will also need PERL 5. qemu-iotests is run from the toplevel build directory with make check-block. Options used by or by the analyzer appear first, followed by the build_command and any build_options normally Linux Man Pages » Linux Man Pages Session 1. 04,在网上看到说 clang 编译器不错,然后就照着官网下载源码然后安装,就是 Clang-Getting Started 那个,但是 make 阶段等了两小时最后总是出错,试了好几次了,后来直接 sudo apt install clang 发现也能安装,而且可以用,重要的比官网的简单多了就两分钟的事,我试了编译 clang test. 2, the 64-bit version. I try to build CEF with clang 4. ] I've got a clang build against libstdc++ on Linux but I would really like one built against libc++/libc++abi. /configure CC=clang LD=gcc && make CC=clang LD=gcc. I am newbie to linux kernel build, downloaded linux-2. I followed these instructions, as well as running `sudo make install` at the end to have the binaries copied into `/usr/local`. 0; QtCreator recommended (Optional). 5, then make sure that it is installed correctly. I suggest you compile on a Linux host instead (using a VM for example). Its aim is a modern build system and dependency manager for the C++ language that provide a consistent, out of the box interface across multiple platforms and compilers. Before using OF in linux you need to run some install scripts, follow the instructions here if you haven't done so yet. 6 are C11 by default However a number of kernel developers have found issues with code which makes the kernel not yet C11 compliant The changes to the kernel code for clang pushed for at least C99 compliance with the idea that C11 isn't far off As of Linux v3. Introduction to LLVM The LLVM package contains a collection of modular and reusable compiler and toolchain technologies. 1 Update 1), and I have Clang 3. Information about building with Clang. 0 20140604 Clang 3. Clang / ˈ k l æ ŋ / is a compiler front end for the C, C++, Objective-C and Objective-C++ programming languages, as well as the OpenMP, OpenCL, RenderScript and CUDA frameworks. Under General > Platform Toolset, choose WSL_Clang_1_0 if you are using Windows Subsystem for Linux, or Remote_Clang_1_0 if you are using a remote machine or VM. Template:Rating This page contains information about the effort to build UE4 natively on a Linux host. I will have to try again following your steps. qemu-iotests is run from the toplevel build directory with make check-block. Since I have Android NDK installed on my Mac, I thought it would be nice if I can make good use of that. We now use Clang to build Chrome for all platforms it runs on: macOS, iOS, Linux, Chrome OS, Android, and Windows. Support for several source languages. Creating and using shared libraries with different compilers on different operating systems Let’s start building our demo on Linux with GCC. This task will invoke the Clang compiler to create an executable file based on the source code. Valgrind is an instrumentation framework for building dynamic analysis tools. @timo_capa - I am not sure how you go about building in Clang. In this article, I will show you how to install Clang with libc++ on Ubuntu Linux and Windows System for Linux. This tutorial should take less than 30 minutes to complete. It is possible to build Firefox for Windows using Linux as a development platform. Contribute to ClangBuiltLinux/linux development by creating an account on GitHub. 12, grub, …) that can’t currently be built with clang. 1, we recomend to use 4. Introduction. How To Cross-Compile Clang/LLVM using information about building LLVM and Clang on host machine, targeting another platform. Build Steps Overview. The command-line options include-d path/to/dir to build a different directory-p to show a progress bar. Search for clang-format in your repositories. This blog series will introduce the clang-tidy utility from the Clang/LLVM project and show how to use it to automatically refactor C++ source code and integrate with your build system, as well as how to use the tool on other platforms than Unices. It also tends to assume that a Linux environment will either be Glibc-based or Android. The ROS 2 build will automatically build support for vendors that have been installed and sourced correctly. What version of clang are you using? If your version is 3. Otherwise, you may see strange build errors that only happen when you run scan-build. 1 with BUILD_SHARED_LIBS=ON, which failes with the current llvm-SlackBuild. 0, while clang-tools depends on the corresponding clang-tools-6. OS: AuroraUX, DragonFlyBSD, FreeBSD, NetBSD, Linux, Darwin. Template:Rating This page contains information about the effort to build UE4 natively on a Linux host. I tried that and it still wouldn't link. Clang is my compiler of choice as I found it to be the fastest for development and it works on all desktop platforms. On Sat, Aug 05, 2017 at 08:31:11PM -0700, Stefan Agner wrote: > Hi Herbert, > > This still applies fine on 4. Bug: 132097678 Change-Id: If5542a39e36fb4de6dd4b4135a22e188f752dd84 Signed-off-by: Alistair Strachan. A Linux system is anything that boots up from the Linux kernel. Three Ways to Use Android NDK Cross Compiler 22 Dec 2015. So on running "ldd" on the final dynamic executable it is showing up libc dependency. qemu-iotests Main article: Testing/QemuIoTests. Building libobjc2 with CMake + Clang + MinGW on Linux Tag: cmake , clang , cross-compiling , mingw-w64 , libobjc2 I'm trying to cross compile libobjc2 from Arch to Windows. The project supports different build tools on different platforms, have a look at the menu to find the platform you need. I noticed a strange behavior. OpenSCAD User Manual/Building on Linux/UNIX. On Linux, unless you are using your distribution's default LLVM version, you will also have to build the LLVMgold. 4 SVN, but 3. There has also been a talk at the Collaboration Summit 2015 in Santa Rosa ( slides ). I don't seem to have the BlocksRuntime available (when I run clang with the `-lBlocksRuntime` flag I get a message saying its missing). For each row, Travis CI C builder will export the CC and CC_FOR_BUILD env variables to point to either gcc or clang. So could someone give me some instructions or materials about how to use clang to build clang(W. When using gcc, we have to build 3 copies of gcc to support all platforms, but we only have to build one copy of LLVM/clang. This fix removes the use of 'vfpcc' which as an unknown register in clang, and instead uses __builtin_arm_set_fpscr. Questions: Dear fellow C++ coders, after using the Visual Studio toolchain for building on windows for a while, I decided to give Clang 5 a shot. tar zchf arm-linux-gnueabihf. Hallo, I have been trying to build LLVM 3. That's just frustrating. Building clang. To build Tapir/LLVM from source, you will need a C/C++ compiler and a recent version of Cmake. Contribute to ClangBuiltLinux/linux development by creating an account on GitHub. It is however possible to use the system one, provided it's accessible from the PATH environment variable. 04 Posted on January 17, 2013 by Paul. The AArch64 state has been in better shape in recent years with multiple Arm vendors using Clang as their default compiler including to build the Linux kernel, but finally in 2019 the mainline Clang can build mainline Linux x86_64. I'm trying to move away from gcc to clang, and bdb is one of few packages that doesn't build with clang and its runtime libraries. Clang and LLD drivers can emulate the drivers of other toolchains. 32-28-generic #55-Ubuntu SMP Mon Jan 10 21:21:01 UTC 2011 i686 GNU/Linux. 14 instead of the one inside the clang toolchain. Clang project is a C, C++, Objective C and Objective C++ front-end based on the LLVM compiler. Not a problem in its own right, but not very convenient, especially when compared to other platforms: apt-get install clang-3. Status of CLANG support Some other subprojects are always built with clang, even in gcc builds: parts of external/chromium_org probably to reduce the potential for surprise -- Chromium uses clang for desktop OS builds too. On this machine, install the Cryptography dependencies as mentioned in Building cryptography on Linux. This project implements the Intel Cilk Plus language extensions in the Clang how to build Clang/LLVM/Compiler-rt related to the compiler on Linux.