#15837: Hadrian should build dynamically linked ghc binary -------------------------------------+------------------------------------- Reporter: davide | Owner: davide Type: bug | Status: new Priority: normal | Milestone: Component: Build System | Version: 8.6.1 (Hadrian) | Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Phab:D5385 Wiki Page: | Phab:D5327 -------------------------------------+------------------------------------- Changes (by davide): * differential: Phab:D5385 => Phab:D5385 Phab:D5327 Old description:
The ghc binary is dynamically linked via make in various flavors (e.g. quick). Hadrian builds a static linked binary in these cases (this is a bug). Various change are needed to fix this:
1. Add new .cabal file field extra-dynamic-library-flavours (see [https://github.com/haskell/cabal/pull/5606 this PR]). 2. Use .cabal extra-dynamic-library-flavours for the RTS (see [https://github.com/snowleopard/hadrian/issues/695#issue-367436377 this comment], depends on 1.) 3. Hadrian: fix management of nontrivial dynamic flavours of libHSrts (see [https://github.com/snowleopard/hadrian/pull/698 this PR]). 4. Hadrian should build ghc with the `-fPIC -dynamic` options (see [https://github.com/DavidEichmann/ghc/commit/752021f69f577b678630302b567fd712... #diff-408bbe46d4afae11991cbadb2c531b78 this comment], depends on 3.). 5. Use the correct relative path to the dynamically linked libraries (see [https://phabricator.haskell.org/D5281 patch D5281], depends on 3. and 4.). 6. Build ghc-iserv-dyn, as it is will be required required by many tests (see/depends on [https://phabricator.haskell.org/D5255 D5255 patch for ghc-iserv-prof])
New description: The ghc binary is dynamically linked via make in various flavors (e.g. quick). Hadrian builds a static linked binary in these cases (this is a bug). Various change are needed to fix this: 1. Add new .cabal file field extra-dynamic-library-flavours (see [https://github.com/haskell/cabal/pull/5606 this PR]). 2. Use .cabal extra-dynamic-library-flavours for the RTS (see [https://github.com/snowleopard/hadrian/issues/695#issue-367436377 this comment], depends on 1.) 3. Hadrian: fix management of nontrivial dynamic flavours of libHSrts (see [https://github.com/snowleopard/hadrian/pull/698 this PR]). 4. Hadrian should build ghc with the `-fPIC -dynamic` options (see [https://github.com/DavidEichmann/ghc/commit/752021f69f577b678630302b567fd712... #diff-408bbe46d4afae11991cbadb2c531b78 this comment], depends on 3.). 5. Use the correct relative path to the dynamically linked libraries (see Phab:D5281, depends on 3. and 4.). 6. Build ghc-iserv-dyn, as it is will be required required by many tests (Phab:D5327) 7. Hadrian should only use "-shared -dynload deploy" when linking shared libraries (definitely not when linking executables). This problem causes ghc-iserv-dyn to segfault because it is built as a shared library instead of as an executable. -- Comment: Update: With changes 1 to 7 I'm able to build a dynamically linked ghc and this fixes a significant number of tests! The end is in sight! The current status is: * (1, 2, 3) Are done and merged (Thank you Alp!). * (6) Phab:D5327 done and merged! * (4, 7) Should be fixed in a small patch that I am currently preparing. * (5) Phab:D52816 after 4 and 7 are fixed, this needs some updating, but is on the right track. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/15837#comment:8 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler