[LLVMbugs] [Bug 13546] New: Clang plugins do not work on OS X if installed

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=13546

             Bug #: 13546
           Summary: Clang plugins do not work on OS X if installed
           Product: clang
           Version: trunk
          Platform: PC
        OS/Version: MacOS X
            Status: NEW
          Severity: normal
          Priority: P
         Component: Driver
        AssignedTo: unassignedclangbugs at nondot.org
        ReportedBy: Pidgeot18 at gmail.com
                CC: llvmbugs at cs.uiuc.edu
    Classification: Unclassified


Using the example plugin as an example:

$ ~/build/llvm/Release+Asserts/bin/clang++ -Xclang -load -Xclang
~/build/llvm/Release+Asserts/lib/libPrintFunctionNames.dylib /tmp/test.cpp
[ no errors ]
$ sudo make -C ~/build/llvm install
[ Prefix = /usr/local/bin]
$ /usr/local/bin/clang++ -Xclang -load -Xclang
~/build/llvm/Release+Asserts/lib/libPrintFunctionNames.dylib /tmp/test.cpp
error: unable to load plugin
'/Users/jcranmer/build/llvm/Release+Asserts/lib/libPrintFunctionNames.dylib':
'dlopen(/usrs/jcranmer/build/llvm/Release+Asserts/lib/libPrintFunctionNames.dylib,
9): Symbol not found:
__ZN5clang11ASTConsumer21HandleInterestingDeclENS_12DeclGroupRefE
  Referenced from:
/Users/jcranmer/build/llvm/Release+Asserts/lib/libPrintFunctionNames.dylib
  Expected in: flat namespace

It looks like the issue is that make install does an install -m -s, which
strips all useful symbols from clang and makes it unusable for plugins.
Installed versions of clang work on Linux without any issues.

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