#include <stdio.h>

#include "llvm-c/Core.h"
#include "llvm-c/ExecutionEngine.h"

int main() {
    LLVMContextRef llvmCtx = LLVMContextCreate();
    LLVMBuilderRef builder = LLVMCreateBuilderInContext(llvmCtx);
    LLVMModuleRef m1 = LLVMModuleCreateWithNameInContext("m1", llvmCtx);

    LLVMInitializeX86Target();
    LLVMInitializeX86TargetInfo();
    LLVMInitializeX86TargetMC();
    LLVMInitializeX86AsmPrinter();

    LLVMLinkInMCJIT();

    char* errorPtr;
    LLVMExecutionEngineRef jit;
    if (LLVMCreateMCJITCompilerForModule(&jit, m1, NULL, 0, &errorPtr)) {
        printf("%s\n", errorPtr);
        LLVMDisposeMessage(errorPtr);

        return 1;
    }

    LLVMModuleRef m2 = LLVMModuleCreateWithNameInContext("m2", llvmCtx);
    LLVMAddModule(jit, m2);

    LLVMTypeRef type = LLVMInt32TypeInContext(llvmCtx);
    LLVMTypeRef funType = LLVMFunctionType(type, NULL, 0, 0);
    LLVMValueRef fun = LLVMAddFunction(m2, "foo", funType);

    LLVMBasicBlockRef bodyBB = LLVMAppendBasicBlockInContext(llvmCtx, fun, "");
    LLVMPositionBuilderAtEnd(builder, bodyBB);
    LLVMBuildRet(builder, LLVMConstInt(type, 42, 0));

    LLVMDumpModule(m1);
    LLVMDumpModule(m2);

    LLVMGenericValueRef result = LLVMRunFunction(jit, fun, 0, NULL);
    printf("%d\n", LLVMGenericValueToInt(result, 0));

    return 0;
}