[LLVMdev] Add RTLD_GLOBAL to dlopen

[Chris Lattner]

On Wed, 9 Jul 2008, Bram Adams wrote:
> Today, I've made the transition from LLVM 2.1 to 2.3. I invoke opt
> with two dynamic libraries to "-load", the first of which contains
> transformation passes and support code whereas the second one provides
> extra passes which make use of the first library's support code. In
> other words, the symbols loaded in for the first library should be
> available when the second library is loaded.

Sure, applied:
http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20080707/064842.html

-Chris

> In LLVM 2.1, this approach worked, but I noticed that the
> DynamicLibrary::LoadLibraryPermanently(...) implementation in $LLVM/
> lib/System/DynamicLibrary.cpp has been altered for LLVM 2.3. The
> rewrite does not make loaded symbols available for future loaded
> libraries.
>
> Changing on line 64:
>
> void *H = dlopen(Filename, RTLD_LAZY);
>
> ... into ...
>
> void *H = dlopen(Filename, RTLD_LAZY | RTLD_GLOBAL);
>
> fixes this. Could this change be incorporated into future releases?
> Thanks in advance!
>
> Kind regards,
>
> Bram Adams
> GH-SEL, INTEC, Ghent University (Belgium)
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-Chris

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