Answer by carlosprados11 for Switching between GCC and Clang/LLVM using CMake
In the CMakeList.txt:set(CMAKE_C_COMPILER "clang-10")set(CMAKE_CXX_COMPILER "/usr/bin/clang++-10")Or the clang version you have.
View ArticleAnswer by blackice for Switching between GCC and Clang/LLVM using CMake
It is best not to specify a compiler in CMakelists.txt.Just add the following command-D CMAKE_CXX_COMPILER="xx" -D CMAKE_C_COMPILER="xx"Example:cmake -D CMAKE_CXX_COMPILER="/bin/clang++-xx" -D...
View ArticleAnswer by SuperNoob for Switching between GCC and Clang/LLVM using CMake
Simply add this at the end of your ~/.bashrcexport CC=/usr/bin/clangexport CXX=/usr/bin/clang++Relaunch the terminal or do source ~/.bashrc in terminal. From now on, cmake would use clang to build...
View ArticleAnswer by yee for Switching between GCC and Clang/LLVM using CMake
If the default compiler chosen by cmake is gcc and you have installed clang, you can use the easy way to compile your project with clang:$ mkdir build && cd build$ CXX=clang++ CC=clang cmake...
View ArticleAnswer by j_fu for Switching between GCC and Clang/LLVM using CMake
You can use the toolchain file mechanism of cmake for this purpose, see e.g. here. You write a toolchain file for each compiler containing the corresponding definitions. At config time, you run e.g...
View ArticleAnswer by Enze Chi for Switching between GCC and Clang/LLVM using CMake
According to the help of cmake:-C <initial-cache> Pre-load a script to populate the cache. When cmake is first run in an empty build tree, it creates a CMakeCache.txt file and populates it with...
View ArticleAnswer by Victor L for Switching between GCC and Clang/LLVM using CMake
System wide C change on Ubuntu:sudo update-alternatives --config ccSystem wide C++ change on Ubuntu:sudo update-alternatives --config c++For each of the above, press Selection number (1) and Enter to...
View ArticleAnswer by Coder for Switching between GCC and Clang/LLVM using CMake
System wide C++ change on Ubuntu:sudo apt-get install clangsudo update-alternatives --config c++Will print something like this: Selection Path Priority...
View ArticleAnswer by echristo for Switching between GCC and Clang/LLVM using CMake
You definitely don't need to use the various different llvm-ar etc programs:SET (CMAKE_AR "/usr/bin/llvm-ar")SET (CMAKE_LINKER "/usr/bin/llvm-ld")SET (CMAKE_NM "/usr/bin/llvm-nm")SET (CMAKE_OBJDUMP...
View ArticleAnswer by sakra for Switching between GCC and Clang/LLVM using CMake
CMake honors the environment variables CC and CXX upon detecting the C and C++ compiler to use:$ export CC=/usr/bin/clang$ export CXX=/usr/bin/clang++$ cmake ..-- The C compiler identification is...
View ArticleAnswer by Tobias Schlegel for Switching between GCC and Clang/LLVM using CMake
You can use the option command:option(USE_CLANG "build application with clang" OFF) # OFF is the defaultand then wrap the clang-compiler settings in if()s:if(USE_CLANG) SET (...)...
View ArticleAnswer by Ferruccio for Switching between GCC and Clang/LLVM using CMake
You can use the syntax: $ENV{environment-variable} in your CMakeLists.txt to access environment variables. You could create scripts which initialize a set of environment variables appropriately and...
View ArticleSwitching between GCC and Clang/LLVM using CMake
I have a number of projects built using CMake and I'd like to be able to easily switch between using GCC or Clang/LLVM to compile them. I believe (please correct me if I'm mistaken!) that to use Clang...
View Article
