Analyze #includes in C and C++ source files


All systems
curl cmd.cat/iwyu_tool.sh
Debian Debian
apt-get install iwyu
apt-get install iwyu
image/svg+xml Kali Linux
apt-get install iwyu
dnf install iwyu
Windows (WSL2)
sudo apt-get update sudo apt-get install iwyu
apt-get install iwyu


Analyze #includes in C and C++ source files

"Include what you use" means this: for every symbol (type, function variable, or macro) that you use in foo.cc, either foo.cc or foo.h should #include a .h file that exports the declaration of that symbol. The include-what-you-use tool is a program that can be built with the clang libraries in order to analyze #includes of source files to find include-what-you-use violations, and suggest fixes for them. The main goal of include-what-you-use is to remove superfluous #includes. It does this both by figuring out what #includes are not actually needed for this file (for both .cc and .h files), and replacing #includes with forward-declares when possible.