cannot find -lLLVMTransformUtils

[lkmidas]

Hi, I've recently built this project and ran into the following issues:

• the line link_libraries("libLLVMTransformUtils.so") in Transforms/CMakeLists.txt results in /usr/bin/ld: cannot find -lLLVMTransformUtils and so LLVMObfuscator.so cannot be built.
• but then I tried to remove that line from Transforms/CMakeLists.txt and the test successfully ran, I've also checked the generated binaries and they seemed to be obfuscated fine.

I wonder how can the project be built successfully without that line, and does it affect the result if I remove it? Thank you.

[bluesadi]

Hi, I'm not quite sure why this error occurred. Maybe it is because you didn't install LLVM to /usr/bin or /usr/local/bin.

About you question: In Transforms/CMakeLists.txt line 20 opt -lowerswitch -S IR/TestProgram_orig.ll -o IR/TestProgram_lowerswitch.ll I used the lowerswitch Pass from libLLVMTransformUtils.so. However, it still worked fine without link_libraries("libLLVMTransformUtils.so"). So that line is practically useless, you can remove it.

[lkmidas]

Thanks for the answer!