Hi there. My actual main goal is to build my own shared library written in Haskell that would be compatible with application written in C even without knowing that is is written in Haskell. So for now I compiled my shared library but I only could dynamically link it to Haskell dependencies such as "base" and "ghc-prim" packages. But I want to statically link Haskell dependencies but I realized it isn't simple and straightforward task. On Freenode's #haskell I was advised I should build GHC from scratch with -fPIC, on the Linux (I'm using Fedora Workstation 25 on x86_64) I couldn't go forward without this step. So I wrote some Dockerfile based on Debian 9, skipping first part which is containing 'apt-get update' and installing 'build-essential' here is what I have: COPY my-build.mk /my-build.mk RUN mkdir /compile && cd /compile \ && wget https://downloads.haskell.org/~ghc/8.2.2/ghc-8.2.2-src.tar.xz \ && tar -xvf ghc-8.2.2-src.tar.xz \ && rm ghc-8.2.2-src.tar.xz \ && cd ghc-8.2.2/ \ && ./configure --prefix=/ghc-8.2.2-fpic --disable-library-profiling --enable-shared \ && cp /my-build.mk mk/build.mk \ && make install \ && cd /usr/local/bin \ && ls /ghc-8.2.2-fpic/bin/ | xargs -I{} ln -s /ghc-8.2.2-fpic/bin/{} And as you can see I just use my own prepared /my-build.mk/ file which is: SRC_HC_OPTS = -H64m -O EXTRA_HC_OPTS = -fPIC SRC_CC_OPTS = -fPIC -O GhcStage1HcOpts = -fasm -O0 GhcStage2HcOpts = -fasm -O0 GhcLibHcOpts = -fasm -O2 GhcLibWays = v dyn DYNAMIC_GHC_PROGRAMS = YES DYNAMIC_BY_DEFAULT = NO SplitObjs = NO HADDOCK_DOCS = NO BUILD_DOCBOOK_HTML = NO BUILD_DOCBOOK_PS = NO BUILD_DOCBOOK_PDF = NO V = 1 LATEX_DOCS = NO HSCOLOUR_SRCS = NO BeConservative = YES I just combined it from parts I found in the internet during searching answers to my questions. So I built this container, I also installed dependencies by this commands: cd /mnt cabal update cabal sandbox init cabal install --enable-shared --ghc-option=-fPIC happy alex cabal install --enable-shared --ghc-option=-fPIC base-unicode-symbols filepath process directory lens containers qm-interpolated-string And when I tried to build my app by following commands (first command compiles some C-code to automatically initialize Haskell runtime, see link posted below, not sure if /-static/, /-shared/ or /-fPIC/ means something here but it's work in progress): ghc -static -shared -fPIC -optc-DMODULE=Foo src/lib-autoinit.c -outputdir builddir ghc -package-db=SOME_CABALS_SANDBOX_PKGDB_DIR --make-static-shared-fPIC src/Foo.hs builddir/src/lib-autoinit.o -o builddir/libfoo.o -isrc -outputdir builddir -Wall -O2 I failed with a lot of similar errors like this one: /usr/bin/ld.gold: error: /ghc-8.2.2-fpic/lib/ghc-8.2.2/ghc-prim-0.5.1.1/libHSghc-prim-0.5.1.1.a(Classes.o): requires dynamic R_X86_64_PC32 reloc against 'stg_ap_0_fast' which may overflow at runtime; recompile with -fPIC What have I missed? What should I do to make this happen? Any progress could be found here (Dockerfile, sources of modules, build-scripts): https://github.com/unclechu/haskell-experiment-shared-library-for-c-applicat... Related stack overflow issue: https://stackoverflow.com/questions/47978884/how-do-i-recompile-ghc-with-fpi...