🎯 LLVM's llvm::Triple and associated members extracted into a standalone C++ library
TODO#include <iostream>
#include <llvm/TargetParser/Triple.h>
int main() {
auto t = llvm::Triple("x86_64-unknown-linux-gnu");
std::cout << t.getArchName() << "\n";
return 0;
}This project overlays its own build system onto the existing C++ source files in the LLVM repository. Note that we aren't using Git submodules here to track the llvm/llvm-project repository; it's just too large to be practical. Instead, we use a stripped-down pseudo-submodule in llvm.src/ that contains only the files we need. But wait! The LLVM source code has some code generation steps that are handled by some complex CMake infrastructure. Since this particular project doesn't have any platform-specific code generation we can check in some pregenerated files from the LLVM vX.Y.Z release tarball and use those pregenerated files instead of the source versions.
TL;DR: We have llvm.src/lib/* which has only the source *.cpp files that we need to build the libLLVMTargetParser.a or similar library and a separate LLVM-Linux-X64/include/* directory that holds the released generated header files.
Use ./task.cmake generate to generate llvm.src/ and LLVM-Linux-X64/ directories for the LLVM version that corresponds with the project(... VERSION X.Y.Z) in CMakeLists.txt.
Try to keep this project's versions in sync with the LLVM version that this project is extracted from. That means v19.0.0 of LLVM should correspond to v19.0.0 of this project.