[Feature request] clang ability to load plugin by name instead of full path

[d-musique]

Hi. The option -fplugin of clang only accepts full paths.
However under gcc, one is able to load a plugin by just -fplugin=annobin.

If there were such an option and a standard installation scheme for plugins, a cmake build system could easily check availability of optional plugins by checking CXX flag -fplugin=annobin.

[llvmbot]

@llvm/issue-subscribers-clang-driver

Author: None (d-musique)

Hi. The option `-fplugin` of clang only accepts full paths. However under gcc, one is able to load a plugin by just `-fplugin=annobin`.

If there were such an option and a standard installation scheme for plugins, a cmake build system could easily check availability of optional plugins by checking CXX flag -fplugin=annobin.