clang++(1)

clang++ is the C++ frontend for the Clang compiler, part of the LLVM project. It processes C++ source files (.cpp, .cc, .cxx, .C) and produces object files or executables. clang++ handles preprocessing, parsing, semantic analysis, optimization, and code generation in a single invocation.

Unlike g++, clang++ emphasizes fast compilation times, clear error messages, and modular architecture. It's compatible with GCC command-line options for easy migration between compilers.

Compile and link main.cpp to create executable myapp

clang++ -o myapp main.cpp

Compile myapp.cpp with optimization level 2, warnings enabled, and debug symbols, creating myapp.o

clang++ -c -O2 -Wall -g myapp.cpp

Link object files main.o and utils.o with the C++ standard library and math library to create program

clang++ -o program main.o utils.o -lstdc++ -lm

Compile with C++17 standard, all warnings, optimization level 3, and custom include path

clang++ -std=c++17 -Wall -Wextra -O3 -I/usr/local/include main.cpp -o app

Preprocess preprocess.cpp and display the first 50 lines of expanded source

clang++ -E preprocess.cpp | head -50

Create a shared library (position-independent code required) from mylib.cpp

clang++ -fPIC -shared -o libmylib.so mylib.cpp

Compile with full debug symbols and no optimization for easier debugging

clang++ -g -O0 debug.cpp -o debug_app

Compile all .cpp files in current directory using C++20 standard with warnings enabled

clang++ *.cpp -o program -std=c++20 -Wall