issues registering passes in osx 10.8

Project Infrastructure LLVM Dev List Archives
#1

Hi everyone,

This is Ashwin. I have a mac running osx 10.8. I am new to LLVM and have the version 3.1 installed. I am trying to get some LLVM transform passes running on my machine. After having compiled the LLVM source without making changes to the configuration files I am able to run the LLVM gcc and clang. But I am having some trouble using the passes. I tried loading the hello pass inside the transform directory of the LLVM object tree.

When I do an opt -load LLVMhello.dylib -help I dont see the registered pass listed. Further when I load the option I get an undefined symbol error from the linker. This is the command i issue and the output i get.

bash-3.2$ opt -load LLVMHello.dylib < hello.bc > /dev/null

Error opening ‘LLVMHello.dylib’: dlopen(LLVMHello.dylib, 9): Symbol not found: __ZN4llvm12FunctionPass14doFinalization$
| Referenced from: /usr/local/bin/…/lib/LLVMHello.dylib
| Expected in: flat namespace
| in /usr/local/bin/…/lib/LLVMHello.dylib
| -load request ignored.

I appreciate your help. Please help me fix it!

regards,
Ashwin.

#2

It turns out that, on OS X, using the installed tool makes it unusable for plugins. If you edit this line of Makefile.rules: ProgInstall = $(INSTALL) $(Install.StripFlag) -m 0755 so that it looks like this: ProgInstall = $(INSTALL) -m 0755 it should work after installing.

#3

Thank you. The edit made no difference. I did a clean install and the same error is reported.

Any other suggestions?

regards,
Ashwin

#4

Have you tried to pass --enable-shared to configure? It works for me.

$ opt -load /usr/local/lib/LLVMHello.dylib -help | grep hello
    -hello - Hello World Pass
    -hello2 - Hello World Pass (with getAnalysisUsage implemented)

- xi

#5

Thank you all..It worked!

regards,
Ashwin