Zapcc - High-Speed C++ Compiler


Zapcc, is an open source caching C++ compiler built for speed. Ceemple Software, Zapcc’s builder, claims the compiler offers dramatic improvements in both incremental and full builds compared to building with Clang 4.0 and Clang 5.0.

Based on heavily modified code from the Clang compiler project, Zapcc uses an in-memory compilation cache in a client-server architecture. All compilation information is remembered between runs.

Zapcc works in an existing build and ignores precompiled headers, an approach that requires a project be built to precise headers rules. Precompiled headers also do not cache to the same extent as Zapcc.

C++ modules are not standard, are rarely used, and do not support legacy code or C++ macros.

Zapcc is compatible with the Gnu Compiler Collection (GCC) to the extent that Clang is GCC-compatible. Zapcc’s command syntax is identical to Clang as well, with the command being zapcc.

Zapcc supports only Linux x64, so Windows users, no luck here.

License: LLVM Release License

How to install:

Download from here.

To build:

git clone llvm
mkdir build
cd build
cmake -G Ninja -DCMAKE_BUILD_TYPE=Release 


ninja check-all

Press Enter,



Press Enter.

To kill the zapccs server to free memory or replace with newly-built zapcc:

pkill zapcc

Press Enter.

Developers website

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