2 Commits

Author	SHA1	Message	Date
Vassil Vassilev	38eb2b89ba	Allow plugins to handle custom pragmas. ... This will help clad implement pattern such as: #pragma clad on // code which needs derivation #pragma clad off	2018-10-08 21:44:55 +02:00
Vassil Vassilev	272905eced	Implement clang plugin support. ... Clang allows third party shared libraries to provide user-defined extensions. For example, a custom libTemplateInstantiation.so can visualize all template instantiation chains in clang. To enable it one needs to pass a set of options such as -fplugin. Cling should be able to inherently work with clang plugins. However, cling still does not make full use of the clang driver where the plugin setup is handled. This patch enables plugins in cling and extends them in some aspects. In particular, cling allows loading of plugins from shared libraries but also if they are linked to the same library where cling is. This is very useful in cases where cling runs itself in a shared library (eg libCling). Users of libCling (such as ROOT) prefer to keep all llvm and clang related symbols local to avoid symbol clashes if there is another version of clang and llvm linked against a package. This can be done by dlopen-ing libCling with RTLD_LOCAL visibility mode. Then the only way for clang plugins to work in this scenario is to be linked to libCling. Patch by Aleksandr Efremov and me.	2018-07-28 13:17:44 +02:00