clang++ Command Examples

Compile C++ source files. Part of LLVM. More information: https://clang.llvm.org.

• Compile a source code file into an executable binary:

clang++ {{path/to/source.cpp}} -o {{path/to/output_executable}}

• Display (almost) all errors and warnings:

clang++ {{path/to/source.cpp}} -Wall -o {{path/to/output_executable}}

• Choose a language standard to compile with:

clang++ {{path/to/source.cpp}} -std={{c++20}} -o {{path/to/output_executable}}

• Include libraries located at a different path than the source file:

clang++ {{path/to/source.cpp}} -o {{path/to/output_executable}} -I{{path/to/header_path}} -L{{path/to/library_path}} -l{{path/to/library_name}}

• Compile source code into LLVM Intermediate Representation (IR):

clang++ -S -emit-llvm {{path/to/source.cpp}} -o {{path/to/output.ll}}

• Optimize the compiled program for performance:

clang++ {{path/to/source.cpp}} -O{{1|2|3|fast}} -o {{path/to/output_executable}}