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How do I make Clang my default compiler?
2 Answers
- Install clang version 9 from the default Ubuntu repositories in Ubuntu 19.10 and later. sudo apt install clang-9.
- /usr/bin/c++ is actually a symbolic link to: /etc/alternatives/c++ which in turn is also a symbolic link to: /usr/bin/g++ so on Ubuntu c++ is g++ and g++ is g++ explicitly.
How do I change GCC to Clang?
How to install GCC 8 and Clang/LLVM 6.0
- Become root.
- Enable the rhscl , devtools , and optional software repos.
- Add the Red Hat Developer Tools key to your system.
- Use yum to install devtoolset-8 (GCC 8) and llvm-toolset-6.0 (Clang 6).
- Optional: Install the Clang static analysis tools scan-build and clang-tidy .
How do I compile with GCC instead of Clang?
If you want to use clang instead of GCC, you can add -DCMAKE_C_COMPILER=/path/to/clang -DCMAKE_CXX_COMPILER=/path/to/clang++ . You can also use ccmake , which provides a curses interface to configure CMake variables in an interactive manner.
What is the latest version of Clang?
Clang 12, the latest major version of Clang as of April 2021, has full support for all published C++ standards up to C++17, implements most features of C++20, and adds initial support for the upcoming C++23 standard.
Is Clang a compiler?
The Clang tool is a front end compiler that is used to compile programming languages such as C++, C, Objective C++ and Objective C into machine code. Clang is also used as a compiler for frameworks like OpenMP, OpenCL, RenderScript, CUDA and HIP.
Which is better GCC or Clang?
Clang is much faster and uses far less memory than GCC. Clang aims to provide extremely clear and concise diagnostics (error and warning messages), and includes support for expressive diagnostics. GCC’s warnings are sometimes acceptable, but are often confusing and it does not support expressive diagnostics.
Is there a way to switch between GCC and Clang?
Is there an easy way of switching between these and the default GCC variables, preferably as a system-wide change rather than project specific (i.e. not just adding them into a project’s CMakeLists.txt)? Also, is it necessary to use the llvm-* programs rather than the system defaults when compiling using clang instead of gcc? What’s the difference?
How to set Clang 9 as the default C + + compiler on Ubuntu?
Install clang version 9 from the default Ubuntu repositories in Ubuntu 19.10 and later. sudo apt install clang-9. /usr/bin/c++ is actually a symbolic link to: /etc/alternatives/c++. which in turn is also a symbolic link to: /usr/bin/g++. so on Ubuntu c++ is g++ and g++ is g++ explicitly.
How to change the default gcc compiler in Ubuntu?
With that, llvm-config (version 3.7) appears with its plain name in your PATH. No need to muck around with symlinks, nor to call the llvm-config-3.7 that got installed in /usr/bin. Also, check for a package named llvm-defaults (or gcc-defaults), which might offer other way to do this (I didn’t use it).
Can You Change GCC version with CPP bin?
NOTE: g++ version is changed automatically with a gcc version switch. cpp-bin has to be done separately as there exists a “cpp” master alternative. I found this problem while trying to install a new clang compiler.