What is the difference between clang (and LLVM) and gcc g++? Clang converts C C++ etc to LLVM IR, LLVM performs optimizations on the IR, and the LLVM x86 backend writes out x86 machine code for execution Despite the name, LLVM is not a Virtual Machine in the traditional sense - it is a computation model and representation that lends itself well to the task of manipulating code
How do I compile C++ with Clang? - Stack Overflow clang++ test cc -o test will compile successfully, but clang -x c++ will not, showing a lot of undefined reference errors So I guess they are not exactly equivalent It is best to use clang++ instead of clang -x c++ when compiling c++ programs to avoid extra troubles clang version: 11 0 0; Platform: Ubuntu 16 04
using Clang in windows 10 for C C++ - Stack Overflow Install Clang using Visual Studio Installer (1) Open 'Visual Studio Installer' (2) Visual Studio Community 2022 -> click 'Modify' (3) In the [Installation details] checkbox list, check 'C++ Clang tools for Windows' (4) Install Add clang exe (created by the above procedure) to the Path environment variable Now try clang --version in the
Complete list of Clang flags - Stack Overflow You can see at the Clang - FAQ that clang -cc1 is the frontend clang is the GCC-compatible driver And recently, a new driver has appeared, clang-cl, which is a CL-compatible driver I don't know how to explain clang -cc1 properly but the word that matters is frontend You should get answers by looking for "compiler frontend", "clang frontend"
How run clang from command line on Windows? - Stack Overflow With Clang for Windows 5 0 0 (64 Bit) (latest versions available here; you want LLVM-x y z-win64 exe) and Visual Studio 2017 Community Edition or Build Tools installed in their default setup paths (including the latest matching Windows SDK):
Clang optimization levels - Stack Overflow clang adds: -vectorize-loops -vectorize-slp-O3 is based on -O2 opt adds: -argpromotion-Ofast is based on -O3, valid in clang but not in opt clang adds: -fno-signed-zeros -freciprocal-math -ffp-contract=fast -menable-unsafe-fp-math -menable-no-nans -menable-no-infs-Os is the same as -O2-Oz is based on -Os opt drops: -slp-vectorizer; clang
What is clangs equivalent to -rdynamic gcc flag? At least clang 3 3 seems to support -rdynamic though neither clang --help nor the manpage documents it (If you are on OSX, -rdynamic isn't needed) gcc -rdynamic says "-rdynamic Pass the flag --export-dynamic to the ELF linker, on targets that support it " So clang should also be able to do the same with -Wl,--export-dynamic
Clang: What exactly does the -stdlib flag do? - Stack Overflow Clang has a flag -stdlib which, according to both clang++ -cc1 --help (same as clang -cc1 --help) and the LLVM documentation page, allows specification of the C++ standard library to use 1) How does this flag impact on compilation? I e does it change the order of library include paths etc 2) How does this flag impact linking?