[lldb-dev] CMake & BUILD_SHARED_LIBS

Vince Harron vince at nethacker.com
Sun May 31 20:06:26 PDT 2015

Hi Andrew,

We're not testing that configuration so I'm not surprised that you're
hitting problems.  I'd like to look into it but we're working towards a
release now and this isn't the most critical issue.  For today, I recommend
building without this flag.



On Sun, May 31, 2015 at 12:18 AM, Andrew Wilkins <axwalk at gmail.com> wrote:

> Hi,
> I'm looking into updating the LLVM Debian packaging to use CMake instead
> of autotools. I've hit some issues in building LLDB to do with the use of
> BUILD_SHARED_LIBS. I thought I should email the list before proposing any
> changes, as described below.
> Many of the libraries in LLDB are not specified as being shared or static
> in the CMake files. If you set BUILD_SHARED_LIBS, then it will attempt to
> build them as shared; this fails due to undefined library dependencies. I
> looked at adding them, but found there were some circular dependencies
> which made it a bit messy. Also, it doesn't seem very useful to build them
> as shared objects. Since the Makefiles only support building the internal
> libraries as static, I figure the CMake files should be updated to do the
> same.
> With the internal libraries built as static archives, then lldb will build
> successfully (with some minor dependency additions; pthread, dl, and LLVM's
> runtimedyld component). There are then some issues with loading the Python
> extension module. The extension module is a symlink to liblldb.so, whose
> RPATH entries aren't valid relative to the symlink target. This can be
> resolved by adding a symlink from lib/python<version>/site-packages/lib to
> lib.
> Any issues? If not, I'll send a patch through soon.
> Cheers,
> Andrew
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> lldb-dev at cs.uiuc.edu
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