1.modules

C++ Modules

See https://learn.microsoft.com/en-us/cpp/cpp/modules-cpp?view=msvc-170

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How to run

1. Use g++

mkdir -p build
g++-14 -c -fmodules-ts -Wall -Wextra -O2 -std=c++23 my_module.cxx -o build/my_module.o
g++-14 -c -fmodules-ts -Wall -Wextra -O2 -std=c++23 main.cxx -o build/main.o
g++-14 -fmodules-ts -Wall -Wextra -O2 -std=c++23 build/my_module.o build/main.o -o build/main.exe
./build/main.exe

• -fmodules-ts is a compiler flag that enables support for C++20 modules.
• -Wall and Wextra are compiler flags that enable additional warnings to help catch potential issues in the code.
• -O2 is an optimization flag that enables a good balance of performance improvements. You may use -O0 (no optimization), -O1 (basic optimization), or -O3 (aggressive optimization) instead.
• -std=c++23 specifies the C++23 standard for compiling the code.
• -c tells the compiler to generate object files (.o) without linking.
• -o specifies the output file name for the compiled object or executable.

2. Use make

make
# Alternatively, you can use `make compile` and `make run`
make clean
# This cleans the module cache and the build directory

• Check the Makefile

References

• https://en.cppreference.com/w/cpp/language/modules