Boldi, I have tried to do this but the more ambitious goal of running the plugins on `base` as well. If you want to run plugins on base you have to build a stage3 compiler as stage1 doesn't have GHCi support so you can't run plugins whilst building stage2. After getting stage3 working I got blocked by another issue https://gitlab.haskell.org/ghc/ghc/issues/16561 So I will assume you are trying to run plugins whilst building stage1 with the stage0 compiler. Which indeed sounds possible. I added support to Hadrian to allow building shared objects for libraries built with stage0. I think you can enable it by just setting `libraryWays = pure [vanilla, dynamic] ` in a hadrian flavour. Otherwise you can try running the `./hadrian/build.sh tool-args` target which should build them for you. That's the target I use to load GHC into haskell-ide-engine and for ./hadrian/ghci.sh script which ran into similar issues with shared objects. Cheers, Matt On Tue, Apr 16, 2019 at 3:12 PM Németh Boldizsár wrote:

Hi,

I'm trying to run compiler plugins on the source code of GHC itself. (Has anyone done this before?) Somehow this forces the loading of .so files of boot libraries (like libHSterminfo-0.4.1.3.so and libHSghc-boot-th-8.9.so) during GHC's compilation. The .so files are not built at this stage (only in later stages) by default.

Is there an option to create dynamically linked libraries from the boot libraries in stage 0?

BR, Boldizsár

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