Compiling C++ with the Clang API
Published on: 2025-06-25 19:51:36
This post describes how to compile a single C++ source file to an object file with the Clang API. Here is the code. It behaves like a simplified clang executable that handles -c and -S .
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cat > main.cc << eof
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using namespace clang;
constexpr llvm::StringRef kTargetTriple = "x86_64-unknown-linux-gnu" ;
namespace {
struct DiagsSaver : DiagnosticConsumer {
std::string message;
llvm::raw_string_ostream os{message};
void HandleDiagnostic (DiagnosticsEngine::Level diagLevel, const Diagnostic &info) override {
DiagnosticConsumer:: HandleDiagn
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