#3242: ghci: can't load .so/.DLL for: m (addDLL: could not load DLL) ---------------------------------------+--------------------------- Reporter: jeffz1 | Owner: Type: bug | Status: new Priority: normal | Milestone: 7.10.1 Component: GHCi | Version: 7.4.1 Resolution: | Keywords: Operating System: Windows | Architecture: x86 Type of failure: None/Unknown | Difficulty: Unknown Test Case: | Blocked By: 3658 Blocking: | Related Tickets: #7097 Differential Revisions: | ---------------------------------------+--------------------------- Changes (by tejon): * cc: hvr (added) Comment: I am attempting to run the test code for helm, which depends on gtk and sdl2. **As in the main ticket case, compiling with GHC works fine.** I ran into the "GHCi can't find m.dll" issue on the pango dependency, but fixed it using fryguybob's suggestion. Sadly, I run into a similar issue on the sdl2 dependency: {{{ Loading package sdl2-1.1.0 ... <interactive>: mingw32: The specified module could not be found. can't load .so/.DLL for: mingw32.dll (addDLL: could not load DLL) }}} Relinking libmingw32.a into a dll was problematic: the .a contains both dllmain.o and a spurious main.o (which I removed), and also a pair of objects crtst.o and tlsmcrt.o which each do nothing but declare the same integer (a threading state flag), leading to a duplicate declaration error; I have tried favoring each, with the same result. Linking the remainder into mingw32.dll, I now get this: {{{ Loading package sdl2-1.1.0 ... <interactive>: Unknown PEi386 section name `.rdata$IID_IBindStatusCallback' (while processing: C:/msys/lib\libSDL2.a) ghc.exe: panic! (the 'impossible' happened) (GHC version 7.8.3 for i386-unknown-mingw32): loadArchive "C:/msys/lib\\libSDL2.a": failed }}} Perhaps mangling the relink broke everything, but I don't believe it should have gotten that far in the first place: like the m.dll issue this seems to arise from GHCi's inability to identify libfoo.a with foo.dll. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/3242#comment:26 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler